update

Change README LCM-LoRA example learning rates to 1e-4.

.github/workflows/push_tests_fast.yml

@@ -98,6 +98,7 @@ jobs:
     - name: Run example PyTorch CPU tests
       if: ${{ matrix.config.framework == 'pytorch_examples' }}
       run: |
+        python -m pip install peft
         python -m pytest -n 2 --max-worker-restart=0 --dist=loadfile \
           --make-reports=tests_${{ matrix.config.report }} \
           examples

docs/source/en/_toctree.yml

@@ -244,6 +244,8 @@
   - sections:
     - local: api/pipelines/overview
       title: Overview
+    - local: api/pipelines/amused
+      title: aMUSEd
     - local: api/pipelines/animatediff
       title: AnimateDiff
     - local: api/pipelines/attend_and_excite

docs/source/en/api/pipelines/amused.md

@@ -0,0 +1,30 @@
+<!--Copyright 2023 The HuggingFace Team. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License.
+-->
+
+# aMUSEd
+
+Amused is a lightweight text to image model based off of the [muse](https://arxiv.org/pdf/2301.00704.pdf) architecture. Amused is particularly useful in applications that require a lightweight and fast model such as generating many images quickly at once.
+
+Amused is a vqvae token based transformer that can generate an image in fewer forward passes than many diffusion models. In contrast with muse, it uses the smaller text encoder CLIP-L/14 instead of t5-xxl. Due to its small parameter count and few forward pass generation process, amused can generate many images quickly. This benefit is seen particularly at larger batch sizes. 
+
+| Model | Params |
+|-------|--------|
+| [amused-256](https://huggingface.co/huggingface/amused-256) | 603M |
+| [amused-512](https://huggingface.co/huggingface/amused-512) | 608M |
+
+## AmusedPipeline
+
+[[autodoc]] AmusedPipeline
+	- __call__
+	- all
+	- enable_xformers_memory_efficient_attention
+	- disable_xformers_memory_efficient_attention

docs/source/en/api/pipelines/animatediff.md

@@ -38,16 +38,21 @@ The following example demonstrates how to use a *MotionAdapter* checkpoint with
 
 ```python
 import torch
-from diffusers import MotionAdapter, AnimateDiffPipeline, DDIMScheduler
+from diffusers import AnimateDiffPipeline, DDIMScheduler, MotionAdapter
 from diffusers.utils import export_to_gif
 
 # Load the motion adapter
-adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2")
+adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2", torch_dtype=torch.float16)
 # load SD 1.5 based finetuned model
 model_id = "SG161222/Realistic_Vision_V5.1_noVAE"
-pipe = AnimateDiffPipeline.from_pretrained(model_id, motion_adapter=adapter)
+pipe = AnimateDiffPipeline.from_pretrained(model_id, motion_adapter=adapter, torch_dtype=torch.float16)
 scheduler = DDIMScheduler.from_pretrained(
-    model_id, subfolder="scheduler", clip_sample=False, timestep_spacing="linspace", steps_offset=1
+    model_id,
+    subfolder="scheduler",
+    clip_sample=False,
+    timestep_spacing="linspace",
+    beta_schedule="linear",
+    steps_offset=1,
 )
 pipe.scheduler = scheduler
 
@@ -70,6 +75,7 @@ output = pipe(
 )
 frames = output.frames[0]
 export_to_gif(frames, "animation.gif")
+
 ```
 
 Here are some sample outputs:
@@ -88,7 +94,7 @@ Here are some sample outputs:
 
 <Tip>
 
-AnimateDiff tends to work better with finetuned Stable Diffusion models. If you plan on using a scheduler that can clip samples, make sure to disable it by setting `clip_sample=False` in the scheduler as this can also have an adverse effect on generated samples.
+AnimateDiff tends to work better with finetuned Stable Diffusion models. If you plan on using a scheduler that can clip samples, make sure to disable it by setting `clip_sample=False` in the scheduler as this can also have an adverse effect on generated samples. Additionally, the AnimateDiff checkpoints can be sensitive to the beta schedule of the scheduler. We recommend setting this to `linear`.
 
 </Tip>
 
@@ -98,18 +104,25 @@ Motion LoRAs are a collection of LoRAs that work with the `guoyww/animatediff-mo
 
 ```python
 import torch
-from diffusers import MotionAdapter, AnimateDiffPipeline, DDIMScheduler
+from diffusers import AnimateDiffPipeline, DDIMScheduler, MotionAdapter
 from diffusers.utils import export_to_gif
 
 # Load the motion adapter
-adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2")
+adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2", torch_dtype=torch.float16)
 # load SD 1.5 based finetuned model
 model_id = "SG161222/Realistic_Vision_V5.1_noVAE"
-pipe = AnimateDiffPipeline.from_pretrained(model_id, motion_adapter=adapter)
-pipe.load_lora_weights("guoyww/animatediff-motion-lora-zoom-out", adapter_name="zoom-out")
+pipe = AnimateDiffPipeline.from_pretrained(model_id, motion_adapter=adapter, torch_dtype=torch.float16)
+pipe.load_lora_weights(
+    "guoyww/animatediff-motion-lora-zoom-out", adapter_name="zoom-out"
+)
 
 scheduler = DDIMScheduler.from_pretrained(
-    model_id, subfolder="scheduler", clip_sample=False, timestep_spacing="linspace", steps_offset=1
+    model_id,
+    subfolder="scheduler",
+    clip_sample=False,
+    beta_schedule="linear",
+    timestep_spacing="linspace",
+    steps_offset=1,
 )
 pipe.scheduler = scheduler
 
@@ -132,6 +145,7 @@ output = pipe(
 )
 frames = output.frames[0]
 export_to_gif(frames, "animation.gif")
+
 ```
 
 <table>
@@ -160,21 +174,30 @@ Then you can use the following code to combine Motion LoRAs.
 
 ```python
 import torch
-from diffusers import MotionAdapter, AnimateDiffPipeline, DDIMScheduler
+from diffusers import AnimateDiffPipeline, DDIMScheduler, MotionAdapter
 from diffusers.utils import export_to_gif
 
 # Load the motion adapter
-adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2")
+adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2", torch_dtype=torch.float16)
 # load SD 1.5 based finetuned model
 model_id = "SG161222/Realistic_Vision_V5.1_noVAE"
-pipe = AnimateDiffPipeline.from_pretrained(model_id, motion_adapter=adapter)
+pipe = AnimateDiffPipeline.from_pretrained(model_id, motion_adapter=adapter, torch_dtype=torch.float16)
 
-pipe.load_lora_weights("diffusers/animatediff-motion-lora-zoom-out", adapter_name="zoom-out")
-pipe.load_lora_weights("diffusers/animatediff-motion-lora-pan-left", adapter_name="pan-left")
+pipe.load_lora_weights(
+    "diffusers/animatediff-motion-lora-zoom-out", adapter_name="zoom-out",
+)
+pipe.load_lora_weights(
+    "diffusers/animatediff-motion-lora-pan-left", adapter_name="pan-left",
+)
 pipe.set_adapters(["zoom-out", "pan-left"], adapter_weights=[1.0, 1.0])
 
 scheduler = DDIMScheduler.from_pretrained(
-    model_id, subfolder="scheduler", clip_sample=False, timestep_spacing="linspace", steps_offset=1
+    model_id,
+    subfolder="scheduler",
+    clip_sample=False,
+    timestep_spacing="linspace",
+    beta_schedule="linear",
+    steps_offset=1,
 )
 pipe.scheduler = scheduler
 
@@ -197,6 +220,7 @@ output = pipe(
 )
 frames = output.frames[0]
 export_to_gif(frames, "animation.gif")
+
 ```
 
 <table>

docs/source/en/api/pipelines/stable_diffusion/ldm3d_diffusion.md

@@ -31,14 +31,14 @@ Make sure to check out the Stable Diffusion [Tips](overview#tips) section to lea
 
 ## StableDiffusionLDM3DPipeline
 
-[[autodoc]] pipelines.stable_diffusion.pipeline_stable_diffusion_ldm3d.StableDiffusionLDM3DPipeline
+[[autodoc]] pipelines.stable_diffusion_ldm3d.pipeline_stable_diffusion_ldm3d.StableDiffusionLDM3DPipeline
 	- all
 	- __call__
 
 
 ## LDM3DPipelineOutput
 
-[[autodoc]] pipelines.stable_diffusion.pipeline_stable_diffusion_ldm3d.LDM3DPipelineOutput
+[[autodoc]] pipelines.stable_diffusion_ldm3d.pipeline_stable_diffusion_ldm3d.LDM3DPipelineOutput
 	- all
 	- __call__
 

docs/source/en/training/t2i_adapters.md

@@ -12,7 +12,7 @@ specific language governing permissions and limitations under the License.
 
 # T2I-Adapter
 
-[T2I-Adapter]((https://hf.co/papers/2302.08453)) is a lightweight adapter model that provides an additional conditioning input image (line art, canny, sketch, depth, pose) to better control image generation. It is similar to a ControlNet, but it is a lot smaller (~77M parameters and ~300MB file size) because its only inserts weights into the UNet instead of copying and training it.
+[T2I-Adapter](https://hf.co/papers/2302.08453) is a lightweight adapter model that provides an additional conditioning input image (line art, canny, sketch, depth, pose) to better control image generation. It is similar to a ControlNet, but it is a lot smaller (~77M parameters and ~300MB file size) because its only inserts weights into the UNet instead of copying and training it.
 
 The T2I-Adapter is only available for training with the Stable Diffusion XL (SDXL) model.
 

docs/source/en/using-diffusers/controlnet.md

@@ -203,7 +203,7 @@ def make_inpaint_condition(image, image_mask):
     image_mask = np.array(image_mask.convert("L")).astype(np.float32) / 255.0
 
     assert image.shape[0:1] == image_mask.shape[0:1]
-    image[image_mask > 0.5] = 1.0  # set as masked pixel
+    image[image_mask > 0.5] = -1.0  # set as masked pixel
     image = np.expand_dims(image, 0).transpose(0, 3, 1, 2)
     image = torch.from_numpy(image)
     return image

docs/source/en/using-diffusers/reusing_seeds.md

@@ -41,6 +41,20 @@ Now, define four different `Generator`s and assign each `Generator` a seed (`0`
 generator = [torch.Generator(device="cuda").manual_seed(i) for i in range(4)]
 ```
 
+<Tip warning={true}>
+
+To create a batched seed, you should use a list comprehension that iterates over the length specified in `range()`. This creates a unique `Generator` object for each image in the batch. If you only multiply the `Generator` by the batch size, this only creates one `Generator` object that is used sequentially for each image in the batch.
+
+For example, if you want to use the same seed to create 4 identical images:
+
+```py
+❌ [torch.Generator().manual_seed(seed)] * 4
+
+✅ [torch.Generator().manual_seed(seed) for _ in range(4)]
+```
+
+</Tip>
+
 Generate the images and have a look:
 
 ```python

examples/amused/README.md

@@ -0,0 +1,326 @@
+## Amused training
+
+Amused can be finetuned on simple datasets relatively cheaply and quickly. Using 8bit optimizers, lora, and gradient accumulation, amused can be finetuned with as little as 5.5 GB. Here are a set of examples for finetuning amused on some relatively simple datasets. These training recipies are aggressively oriented towards minimal resources and fast verification -- i.e. the batch sizes are quite low and the learning rates are quite high. For optimal quality, you will probably want to increase the batch sizes and decrease learning rates.
+
+All training examples use fp16 mixed precision and gradient checkpointing. We don't show 8 bit adam + lora as its about the same memory use as just using lora (bitsandbytes uses full precision optimizer states for weights below a minimum size).
+
+### Finetuning the 256 checkpoint
+
+These examples finetune on this [nouns](https://huggingface.co/datasets/m1guelpf/nouns) dataset.
+
+Example results:
+
+![noun1](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/noun1.png) ![noun2](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/noun2.png) ![noun3](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/noun3.png)
+
+
+#### Full finetuning
+
+Batch size: 8, Learning rate: 1e-4, Gives decent results in 750-1000 steps
+
+| Batch Size | Gradient Accumulation Steps | Effective Total Batch Size | Memory Used |
+|------------|-----------------------------|------------------|-------------|
+|    8        |          1                   |     8             |      19.7 GB       |
+|    4        |          2                   |     8             |      18.3 GB       |
+|    1        |          8                   |     8             |      17.9 GB       |
+
+```sh
+accelerate launch train_amused.py \
+    --output_dir <output path> \
+    --train_batch_size <batch size> \
+    --gradient_accumulation_steps <gradient accumulation steps> \
+    --learning_rate 1e-4 \
+    --pretrained_model_name_or_path huggingface/amused-256 \
+    --instance_data_dataset  'm1guelpf/nouns' \
+    --image_key image \
+    --prompt_key text \
+    --resolution 256 \
+    --mixed_precision fp16 \
+    --lr_scheduler constant \
+    --validation_prompts \
+        'a pixel art character with square red glasses, a baseball-shaped head and a orange-colored body on a dark background' \
+        'a pixel art character with square orange glasses, a lips-shaped head and a red-colored body on a light background' \
+        'a pixel art character with square blue glasses, a microwave-shaped head and a purple-colored body on a sunny background' \
+        'a pixel art character with square red glasses, a baseball-shaped head and a blue-colored body on an orange background' \
+        'a pixel art character with square red glasses' \
+        'a pixel art character' \
+        'square red glasses on a pixel art character' \
+        'square red glasses on a pixel art character with a baseball-shaped head' \
+    --max_train_steps 10000 \
+    --checkpointing_steps 500 \
+    --validation_steps 250 \
+    --gradient_checkpointing
+```
+
+#### Full finetuning + 8 bit adam
+
+Note that this training config keeps the batch size low and the learning rate high to get results fast with low resources. However, due to 8 bit adam, it will diverge eventually. If you want to train for longer, you will have to up the batch size and lower the learning rate.
+
+Batch size: 16, Learning rate: 2e-5, Gives decent results in ~750 steps
+
+| Batch Size | Gradient Accumulation Steps | Effective Total Batch Size | Memory Used |
+|------------|-----------------------------|------------------|-------------|
+|    16        |          1                   |     16             |      20.1 GB       |
+|    8        |          2                   |      16           |      15.6 GB       |
+|    1        |          16                   |     16            |      10.7 GB       |
+
+```sh
+accelerate launch train_amused.py \
+    --output_dir <output path> \
+    --train_batch_size <batch size> \
+    --gradient_accumulation_steps <gradient accumulation steps> \
+    --learning_rate 2e-5 \
+    --use_8bit_adam \
+    --pretrained_model_name_or_path huggingface/amused-256 \
+    --instance_data_dataset  'm1guelpf/nouns' \
+    --image_key image \
+    --prompt_key text \
+    --resolution 256 \
+    --mixed_precision fp16 \
+    --lr_scheduler constant \
+    --validation_prompts \
+        'a pixel art character with square red glasses, a baseball-shaped head and a orange-colored body on a dark background' \
+        'a pixel art character with square orange glasses, a lips-shaped head and a red-colored body on a light background' \
+        'a pixel art character with square blue glasses, a microwave-shaped head and a purple-colored body on a sunny background' \
+        'a pixel art character with square red glasses, a baseball-shaped head and a blue-colored body on an orange background' \
+        'a pixel art character with square red glasses' \
+        'a pixel art character' \
+        'square red glasses on a pixel art character' \
+        'square red glasses on a pixel art character with a baseball-shaped head' \
+    --max_train_steps 10000 \
+    --checkpointing_steps 500 \
+    --validation_steps 250 \
+    --gradient_checkpointing
+```
+
+#### Full finetuning + lora
+
+Batch size: 16, Learning rate: 8e-4, Gives decent results in 1000-1250 steps
+
+| Batch Size | Gradient Accumulation Steps | Effective Total Batch Size | Memory Used |
+|------------|-----------------------------|------------------|-------------|
+|    16        |          1                   |     16             |      14.1 GB       |
+|    8        |          2                   |      16           |      10.1 GB       |
+|    1        |          16                   |     16            |      6.5 GB       |
+
+```sh
+accelerate launch train_amused.py \
+    --output_dir <output path> \
+    --train_batch_size <batch size> \
+    --gradient_accumulation_steps <gradient accumulation steps> \
+    --learning_rate 8e-4 \
+    --use_lora \
+    --pretrained_model_name_or_path huggingface/amused-256 \
+    --instance_data_dataset  'm1guelpf/nouns' \
+    --image_key image \
+    --prompt_key text \
+    --resolution 256 \
+    --mixed_precision fp16 \
+    --lr_scheduler constant \
+    --validation_prompts \
+        'a pixel art character with square red glasses, a baseball-shaped head and a orange-colored body on a dark background' \
+        'a pixel art character with square orange glasses, a lips-shaped head and a red-colored body on a light background' \
+        'a pixel art character with square blue glasses, a microwave-shaped head and a purple-colored body on a sunny background' \
+        'a pixel art character with square red glasses, a baseball-shaped head and a blue-colored body on an orange background' \
+        'a pixel art character with square red glasses' \
+        'a pixel art character' \
+        'square red glasses on a pixel art character' \
+        'square red glasses on a pixel art character with a baseball-shaped head' \
+    --max_train_steps 10000 \
+    --checkpointing_steps 500 \
+    --validation_steps 250 \
+    --gradient_checkpointing
+```
+
+### Finetuning the 512 checkpoint
+
+These examples finetune on this [minecraft](https://huggingface.co/monadical-labs/minecraft-preview) dataset.
+
+Example results:
+
+![minecraft1](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/minecraft1.png) ![minecraft2](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/minecraft2.png) ![minecraft3](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/minecraft3.png)
+
+#### Full finetuning
+
+Batch size: 8, Learning rate: 8e-5, Gives decent results in 500-1000 steps
+
+| Batch Size | Gradient Accumulation Steps | Effective Total Batch Size | Memory Used |
+|------------|-----------------------------|------------------|-------------|
+|    8        |          1                   |     8             |      24.2 GB       |
+|    4        |          2                   |     8             |      19.7 GB       |
+|    1        |          8                   |     8             |      16.99 GB       |
+
+```sh
+accelerate launch train_amused.py \
+    --output_dir <output path> \
+    --train_batch_size <batch size> \
+    --gradient_accumulation_steps <gradient accumulation steps> \
+    --learning_rate 8e-5 \
+    --pretrained_model_name_or_path huggingface/amused-512 \
+    --instance_data_dataset  'monadical-labs/minecraft-preview' \
+    --prompt_prefix 'minecraft ' \
+    --image_key image \
+    --prompt_key text \
+    --resolution 512 \
+    --mixed_precision fp16 \
+    --lr_scheduler constant \
+    --validation_prompts \
+        'minecraft Avatar' \
+        'minecraft character' \
+        'minecraft' \
+        'minecraft president' \
+        'minecraft pig' \
+    --max_train_steps 10000 \
+    --checkpointing_steps 500 \
+    --validation_steps 250 \
+    --gradient_checkpointing
+```
+
+#### Full finetuning + 8 bit adam
+
+Batch size: 8, Learning rate: 5e-6, Gives decent results in 500-1000 steps
+
+| Batch Size | Gradient Accumulation Steps | Effective Total Batch Size | Memory Used |
+|------------|-----------------------------|------------------|-------------|
+|    8        |          1                   |     8             |      21.2 GB       |
+|    4        |          2                   |     8             |      13.3 GB       |
+|    1        |          8                   |     8             |      9.9 GB       |
+
+```sh
+accelerate launch train_amused.py \
+    --output_dir <output path> \
+    --train_batch_size <batch size> \
+    --gradient_accumulation_steps <gradient accumulation steps> \
+    --learning_rate 5e-6 \
+    --pretrained_model_name_or_path huggingface/amused-512 \
+    --instance_data_dataset  'monadical-labs/minecraft-preview' \
+    --prompt_prefix 'minecraft ' \
+    --image_key image \
+    --prompt_key text \
+    --resolution 512 \
+    --mixed_precision fp16 \
+    --lr_scheduler constant \
+    --validation_prompts \
+        'minecraft Avatar' \
+        'minecraft character' \
+        'minecraft' \
+        'minecraft president' \
+        'minecraft pig' \
+    --max_train_steps 10000 \
+    --checkpointing_steps 500 \
+    --validation_steps 250 \
+    --gradient_checkpointing
+```
+
+#### Full finetuning + lora 
+
+Batch size: 8, Learning rate: 1e-4, Gives decent results in 500-1000 steps
+
+| Batch Size | Gradient Accumulation Steps | Effective Total Batch Size | Memory Used |
+|------------|-----------------------------|------------------|-------------|
+|    8        |          1                   |     8             |      12.7 GB       |
+|    4        |          2                   |     8             |      9.0 GB       |
+|    1        |          8                   |     8             |      5.6 GB       |
+
+```sh
+accelerate launch train_amused.py \
+    --output_dir <output path> \
+    --train_batch_size <batch size> \
+    --gradient_accumulation_steps <gradient accumulation steps> \
+    --learning_rate 1e-4 \
+    --use_lora \
+    --pretrained_model_name_or_path huggingface/amused-512 \
+    --instance_data_dataset  'monadical-labs/minecraft-preview' \
+    --prompt_prefix 'minecraft ' \
+    --image_key image \
+    --prompt_key text \
+    --resolution 512 \
+    --mixed_precision fp16 \
+    --lr_scheduler constant \
+    --validation_prompts \
+        'minecraft Avatar' \
+        'minecraft character' \
+        'minecraft' \
+        'minecraft president' \
+        'minecraft pig' \
+    --max_train_steps 10000 \
+    --checkpointing_steps 500 \
+    --validation_steps 250 \
+    --gradient_checkpointing
+```
+
+### Styledrop
+
+[Styledrop](https://arxiv.org/abs/2306.00983) is an efficient finetuning method for learning a new style from just one or very few images. It has an optional first stage to generate human picked additional training samples. The additional training samples can be used to augment the initial images. Our examples exclude the optional additional image selection stage and instead we just finetune on a single image.
+
+This is our example style image:
+![example](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/A%20mushroom%20in%20%5BV%5D%20style.png)
+
+Download it to your local directory with
+```sh
+wget https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/A%20mushroom%20in%20%5BV%5D%20style.png
+```
+
+#### 256
+
+Example results:
+
+![glowing_256_1](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/glowing_256_1.png) ![glowing_256_2](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/glowing_256_2.png) ![glowing_256_3](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/glowing_256_3.png)
+
+Learning rate: 4e-4, Gives decent results in 1500-2000 steps
+
+Memory used: 6.5 GB 
+
+```sh
+accelerate launch train_amused.py \
+    --output_dir <output path> \
+    --mixed_precision fp16 \
+    --report_to wandb \
+    --use_lora \
+    --pretrained_model_name_or_path huggingface/amused-256 \
+    --train_batch_size 1 \
+    --lr_scheduler constant \
+    --learning_rate 4e-4 \
+    --validation_prompts \
+        'A chihuahua walking on the street in [V] style' \
+        'A banana on the table in [V] style' \
+        'A church on the street in [V] style' \
+        'A tabby cat walking in the forest in [V] style' \
+    --instance_data_image 'A mushroom in [V] style.png' \
+    --max_train_steps 10000 \
+    --checkpointing_steps 500 \
+    --validation_steps 100 \
+    --resolution 256
+```
+
+#### 512
+
+Example results:
+
+![glowing_512_1](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/glowing_512_1.png) ![glowing_512_2](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/glowing_512_2.png) ![glowing_512_3](https://huggingface.co/datasets/diffusers/docs-images/resolve/main/amused/glowing_512_3.png)
+
+Learning rate: 1e-3, Lora alpha 1, Gives decent results in 1500-2000 steps
+
+Memory used: 5.6 GB 
+
+```
+accelerate launch train_amused.py \
+    --output_dir <output path> \
+    --mixed_precision fp16 \
+    --report_to wandb \
+    --use_lora \
+    --pretrained_model_name_or_path huggingface/amused-512 \
+    --train_batch_size 1 \
+    --lr_scheduler constant \
+    --learning_rate 1e-3 \
+    --validation_prompts \
+        'A chihuahua walking on the street in [V] style' \
+        'A banana on the table in [V] style' \
+        'A church on the street in [V] style' \
+        'A tabby cat walking in the forest in [V] style' \
+    --instance_data_image 'A mushroom in [V] style.png' \
+    --max_train_steps 100000 \
+    --checkpointing_steps 500 \
+    --validation_steps 100 \
+    --resolution 512 \
+    --lora_alpha 1
+```

examples/amused/train_amused.py

@@ -0,0 +1,972 @@
+# coding=utf-8
+# Copyright 2023 The HuggingFace Inc. team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import copy
+import logging
+import math
+import os
+import shutil
+from contextlib import nullcontext
+from pathlib import Path
+
+import torch
+import torch.nn.functional as F
+from accelerate import Accelerator
+from accelerate.logging import get_logger
+from accelerate.utils import ProjectConfiguration, set_seed
+from datasets import load_dataset
+from peft import LoraConfig
+from peft.utils import get_peft_model_state_dict
+from PIL import Image
+from PIL.ImageOps import exif_transpose
+from torch.utils.data import DataLoader, Dataset, default_collate
+from torchvision import transforms
+from transformers import (
+    CLIPTextModelWithProjection,
+    CLIPTokenizer,
+)
+
+import diffusers.optimization
+from diffusers import AmusedPipeline, AmusedScheduler, EMAModel, UVit2DModel, VQModel
+from diffusers.loaders import LoraLoaderMixin
+from diffusers.utils import is_wandb_available
+
+
+if is_wandb_available():
+    import wandb
+
+logger = get_logger(__name__, log_level="INFO")
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--pretrained_model_name_or_path",
+        type=str,
+        default=None,
+        required=True,
+        help="Path to pretrained model or model identifier from huggingface.co/models.",
+    )
+    parser.add_argument(
+        "--revision",
+        type=str,
+        default=None,
+        required=False,
+        help="Revision of pretrained model identifier from huggingface.co/models.",
+    )
+    parser.add_argument(
+        "--variant",
+        type=str,
+        default=None,
+        help="Variant of the model files of the pretrained model identifier from huggingface.co/models, 'e.g.' fp16",
+    )
+    parser.add_argument(
+        "--instance_data_dataset",
+        type=str,
+        default=None,
+        required=False,
+        help="A Hugging Face dataset containing the training images",
+    )
+    parser.add_argument(
+        "--instance_data_dir",
+        type=str,
+        default=None,
+        required=False,
+        help="A folder containing the training data of instance images.",
+    )
+    parser.add_argument(
+        "--instance_data_image", type=str, default=None, required=False, help="A single training image"
+    )
+    parser.add_argument(
+        "--use_8bit_adam", action="store_true", help="Whether or not to use 8-bit Adam from bitsandbytes."
+    )
+    parser.add_argument(
+        "--dataloader_num_workers",
+        type=int,
+        default=0,
+        help=(
+            "Number of subprocesses to use for data loading. 0 means that the data will be loaded in the main process."
+        ),
+    )
+    parser.add_argument(
+        "--allow_tf32",
+        action="store_true",
+        help=(
+            "Whether or not to allow TF32 on Ampere GPUs. Can be used to speed up training. For more information, see"
+            " https://pytorch.org/docs/stable/notes/cuda.html#tensorfloat-32-tf32-on-ampere-devices"
+        ),
+    )
+    parser.add_argument("--use_ema", action="store_true", help="Whether to use EMA model.")
+    parser.add_argument("--ema_decay", type=float, default=0.9999)
+    parser.add_argument("--ema_update_after_step", type=int, default=0)
+    parser.add_argument("--adam_beta1", type=float, default=0.9, help="The beta1 parameter for the Adam optimizer.")
+    parser.add_argument("--adam_beta2", type=float, default=0.999, help="The beta2 parameter for the Adam optimizer.")
+    parser.add_argument("--adam_weight_decay", type=float, default=1e-2, help="Weight decay to use.")
+    parser.add_argument("--adam_epsilon", type=float, default=1e-08, help="Epsilon value for the Adam optimizer")
+    parser.add_argument(
+        "--output_dir",
+        type=str,
+        default="muse_training",
+        help="The output directory where the model predictions and checkpoints will be written.",
+    )
+    parser.add_argument("--seed", type=int, default=None, help="A seed for reproducible training.")
+    parser.add_argument(
+        "--logging_dir",
+        type=str,
+        default="logs",
+        help=(
+            "[TensorBoard](https://www.tensorflow.org/tensorboard) log directory. Will default to"
+            " *output_dir/runs/**CURRENT_DATETIME_HOSTNAME***."
+        ),
+    )
+    parser.add_argument(
+        "--max_train_steps",
+        type=int,
+        default=None,
+        help="Total number of training steps to perform.  If provided, overrides num_train_epochs.",
+    )
+    parser.add_argument(
+        "--checkpointing_steps",
+        type=int,
+        default=500,
+        help=(
+            "Save a checkpoint of the training state every X updates. Checkpoints can be used for resuming training via `--resume_from_checkpoint`. "
+            "In the case that the checkpoint is better than the final trained model, the checkpoint can also be used for inference."
+            "Using a checkpoint for inference requires separate loading of the original pipeline and the individual checkpointed model components."
+            "See https://huggingface.co/docs/diffusers/main/en/training/dreambooth#performing-inference-using-a-saved-checkpoint for step by step"
+            "instructions."
+        ),
+    )
+    parser.add_argument(
+        "--logging_steps",
+        type=int,
+        default=50,
+    )
+    parser.add_argument(
+        "--checkpoints_total_limit",
+        type=int,
+        default=None,
+        help=(
+            "Max number of checkpoints to store. Passed as `total_limit` to the `Accelerator` `ProjectConfiguration`."
+            " See Accelerator::save_state https://huggingface.co/docs/accelerate/package_reference/accelerator#accelerate.Accelerator.save_state"
+            " for more details"
+        ),
+    )
+    parser.add_argument(
+        "--resume_from_checkpoint",
+        type=str,
+        default=None,
+        help=(
+            "Whether training should be resumed from a previous checkpoint. Use a path saved by"
+            ' `--checkpointing_steps`, or `"latest"` to automatically select the last available checkpoint.'
+        ),
+    )
+    parser.add_argument(
+        "--train_batch_size", type=int, default=16, help="Batch size (per device) for the training dataloader."
+    )
+    parser.add_argument(
+        "--gradient_accumulation_steps",
+        type=int,
+        default=1,
+        help="Number of updates steps to accumulate before performing a backward/update pass.",
+    )
+    parser.add_argument(
+        "--learning_rate",
+        type=float,
+        default=0.0003,
+        help="Initial learning rate (after the potential warmup period) to use.",
+    )
+    parser.add_argument(
+        "--scale_lr",
+        action="store_true",
+        default=False,
+        help="Scale the learning rate by the number of GPUs, gradient accumulation steps, and batch size.",
+    )
+    parser.add_argument(
+        "--lr_scheduler",
+        type=str,
+        default="constant",
+        help=(
+            'The scheduler type to use. Choose between ["linear", "cosine", "cosine_with_restarts", "polynomial",'
+            ' "constant", "constant_with_warmup"]'
+        ),
+    )
+    parser.add_argument(
+        "--lr_warmup_steps", type=int, default=500, help="Number of steps for the warmup in the lr scheduler."
+    )
+    parser.add_argument(
+        "--validation_steps",
+        type=int,
+        default=100,
+        help=(
+            "Run validation every X steps. Validation consists of running the prompt"
+            " `args.validation_prompt` multiple times: `args.num_validation_images`"
+            " and logging the images."
+        ),
+    )
+    parser.add_argument(
+        "--mixed_precision",
+        type=str,
+        default=None,
+        choices=["no", "fp16", "bf16"],
+        help=(
+            "Whether to use mixed precision. Choose between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >="
+            " 1.10.and an Nvidia Ampere GPU.  Default to the value of accelerate config of the current system or the"
+            " flag passed with the `accelerate.launch` command. Use this argument to override the accelerate config."
+        ),
+    )
+    parser.add_argument(
+        "--report_to",
+        type=str,
+        default="wandb",
+        help=(
+            'The integration to report the results and logs to. Supported platforms are `"tensorboard"`'
+            ' (default), `"wandb"` and `"comet_ml"`. Use `"all"` to report to all integrations.'
+        ),
+    )
+    parser.add_argument("--validation_prompts", type=str, nargs="*")
+    parser.add_argument(
+        "--resolution",
+        type=int,
+        default=512,
+        help=(
+            "The resolution for input images, all the images in the train/validation dataset will be resized to this"
+            " resolution"
+        ),
+    )
+    parser.add_argument("--split_vae_encode", type=int, required=False, default=None)
+    parser.add_argument("--min_masking_rate", type=float, default=0.0)
+    parser.add_argument("--cond_dropout_prob", type=float, default=0.0)
+    parser.add_argument("--max_grad_norm", default=None, type=float, help="Max gradient norm.", required=False)
+    parser.add_argument("--use_lora", action="store_true", help="Fine tune the model using LoRa")
+    parser.add_argument("--text_encoder_use_lora", action="store_true", help="Fine tune the model using LoRa")
+    parser.add_argument("--lora_r", default=16, type=int)
+    parser.add_argument("--lora_alpha", default=32, type=int)
+    parser.add_argument("--lora_target_modules", default=["to_q", "to_k", "to_v"], type=str, nargs="+")
+    parser.add_argument("--text_encoder_lora_r", default=16, type=int)
+    parser.add_argument("--text_encoder_lora_alpha", default=32, type=int)
+    parser.add_argument("--text_encoder_lora_target_modules", default=["to_q", "to_k", "to_v"], type=str, nargs="+")
+    parser.add_argument("--train_text_encoder", action="store_true")
+    parser.add_argument("--image_key", type=str, required=False)
+    parser.add_argument("--prompt_key", type=str, required=False)
+    parser.add_argument(
+        "--gradient_checkpointing",
+        action="store_true",
+        help="Whether or not to use gradient checkpointing to save memory at the expense of slower backward pass.",
+    )
+    parser.add_argument("--prompt_prefix", type=str, required=False, default=None)
+
+    args = parser.parse_args()
+
+    if args.report_to == "wandb":
+        if not is_wandb_available():
+            raise ImportError("Make sure to install wandb if you want to use it for logging during training.")
+
+    num_datasources = sum(
+        [x is not None for x in [args.instance_data_dir, args.instance_data_image, args.instance_data_dataset]]
+    )
+
+    if num_datasources != 1:
+        raise ValueError(
+            "provide one and only one of `--instance_data_dir`, `--instance_data_image`, or `--instance_data_dataset`"
+        )
+
+    if args.instance_data_dir is not None:
+        if not os.path.exists(args.instance_data_dir):
+            raise ValueError(f"Does not exist: `--args.instance_data_dir` {args.instance_data_dir}")
+
+    if args.instance_data_image is not None:
+        if not os.path.exists(args.instance_data_image):
+            raise ValueError(f"Does not exist: `--args.instance_data_image` {args.instance_data_image}")
+
+    if args.instance_data_dataset is not None and (args.image_key is None or args.prompt_key is None):
+        raise ValueError("`--instance_data_dataset` requires setting `--image_key` and `--prompt_key`")
+
+    return args
+
+
+class InstanceDataRootDataset(Dataset):
+    def __init__(
+        self,
+        instance_data_root,
+        tokenizer,
+        size=512,
+    ):
+        self.size = size
+        self.tokenizer = tokenizer
+        self.instance_images_path = list(Path(instance_data_root).iterdir())
+
+    def __len__(self):
+        return len(self.instance_images_path)
+
+    def __getitem__(self, index):
+        image_path = self.instance_images_path[index % len(self.instance_images_path)]
+        instance_image = Image.open(image_path)
+        rv = process_image(instance_image, self.size)
+
+        prompt = os.path.splitext(os.path.basename(image_path))[0]
+        rv["prompt_input_ids"] = tokenize_prompt(self.tokenizer, prompt)[0]
+        return rv
+
+
+class InstanceDataImageDataset(Dataset):
+    def __init__(
+        self,
+        instance_data_image,
+        train_batch_size,
+        size=512,
+    ):
+        self.value = process_image(Image.open(instance_data_image), size)
+        self.train_batch_size = train_batch_size
+
+    def __len__(self):
+        # Needed so a full batch of the data can be returned. Otherwise will return
+        # batches of size 1
+        return self.train_batch_size
+
+    def __getitem__(self, index):
+        return self.value
+
+
+class HuggingFaceDataset(Dataset):
+    def __init__(
+        self,
+        hf_dataset,
+        tokenizer,
+        image_key,
+        prompt_key,
+        prompt_prefix=None,
+        size=512,
+    ):
+        self.size = size
+        self.image_key = image_key
+        self.prompt_key = prompt_key
+        self.tokenizer = tokenizer
+        self.hf_dataset = hf_dataset
+        self.prompt_prefix = prompt_prefix
+
+    def __len__(self):
+        return len(self.hf_dataset)
+
+    def __getitem__(self, index):
+        item = self.hf_dataset[index]
+
+        rv = process_image(item[self.image_key], self.size)
+
+        prompt = item[self.prompt_key]
+
+        if self.prompt_prefix is not None:
+            prompt = self.prompt_prefix + prompt
+
+        rv["prompt_input_ids"] = tokenize_prompt(self.tokenizer, prompt)[0]
+
+        return rv
+
+
+def process_image(image, size):
+    image = exif_transpose(image)
+
+    if not image.mode == "RGB":
+        image = image.convert("RGB")
+
+    orig_height = image.height
+    orig_width = image.width
+
+    image = transforms.Resize(size, interpolation=transforms.InterpolationMode.BILINEAR)(image)
+
+    c_top, c_left, _, _ = transforms.RandomCrop.get_params(image, output_size=(size, size))
+    image = transforms.functional.crop(image, c_top, c_left, size, size)
+
+    image = transforms.ToTensor()(image)
+
+    micro_conds = torch.tensor(
+        [orig_width, orig_height, c_top, c_left, 6.0],
+    )
+
+    return {"image": image, "micro_conds": micro_conds}
+
+
+def tokenize_prompt(tokenizer, prompt):
+    return tokenizer(
+        prompt,
+        truncation=True,
+        padding="max_length",
+        max_length=77,
+        return_tensors="pt",
+    ).input_ids
+
+
+def encode_prompt(text_encoder, input_ids):
+    outputs = text_encoder(input_ids, return_dict=True, output_hidden_states=True)
+    encoder_hidden_states = outputs.hidden_states[-2]
+    cond_embeds = outputs[0]
+    return encoder_hidden_states, cond_embeds
+
+
+def main(args):
+    if args.allow_tf32:
+        torch.backends.cuda.matmul.allow_tf32 = True
+
+    logging_dir = Path(args.output_dir, args.logging_dir)
+
+    accelerator_project_config = ProjectConfiguration(project_dir=args.output_dir, logging_dir=logging_dir)
+
+    accelerator = Accelerator(
+        gradient_accumulation_steps=args.gradient_accumulation_steps,
+        mixed_precision=args.mixed_precision,
+        log_with=args.report_to,
+        project_config=accelerator_project_config,
+    )
+
+    if accelerator.is_main_process:
+        os.makedirs(args.output_dir, exist_ok=True)
+
+    # Make one log on every process with the configuration for debugging.
+    logging.basicConfig(
+        format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
+        datefmt="%m/%d/%Y %H:%M:%S",
+        level=logging.INFO,
+    )
+    logger.info(accelerator.state, main_process_only=False)
+
+    if accelerator.is_main_process:
+        accelerator.init_trackers("amused", config=vars(copy.deepcopy(args)))
+
+    if args.seed is not None:
+        set_seed(args.seed)
+
+    # TODO - will have to fix loading if training text encoder
+    text_encoder = CLIPTextModelWithProjection.from_pretrained(
+        args.pretrained_model_name_or_path, subfolder="text_encoder", revision=args.revision, variant=args.variant
+    )
+    tokenizer = CLIPTokenizer.from_pretrained(
+        args.pretrained_model_name_or_path, subfolder="tokenizer", revision=args.revision, variant=args.variant
+    )
+    vq_model = VQModel.from_pretrained(
+        args.pretrained_model_name_or_path, subfolder="vqvae", revision=args.revision, variant=args.variant
+    )
+
+    if args.train_text_encoder:
+        if args.text_encoder_use_lora:
+            lora_config = LoraConfig(
+                r=args.text_encoder_lora_r,
+                lora_alpha=args.text_encoder_lora_alpha,
+                target_modules=args.text_encoder_lora_target_modules,
+            )
+            text_encoder.add_adapter(lora_config)
+        text_encoder.train()
+        text_encoder.requires_grad_(True)
+    else:
+        text_encoder.eval()
+        text_encoder.requires_grad_(False)
+
+    vq_model.requires_grad_(False)
+
+    model = UVit2DModel.from_pretrained(
+        args.pretrained_model_name_or_path,
+        subfolder="transformer",
+        revision=args.revision,
+        variant=args.variant,
+    )
+
+    if args.use_lora:
+        lora_config = LoraConfig(
+            r=args.lora_r,
+            lora_alpha=args.lora_alpha,
+            target_modules=args.lora_target_modules,
+        )
+        model.add_adapter(lora_config)
+
+    model.train()
+
+    if args.gradient_checkpointing:
+        model.enable_gradient_checkpointing()
+        if args.train_text_encoder:
+            text_encoder.gradient_checkpointing_enable()
+
+    if args.use_ema:
+        ema = EMAModel(
+            model.parameters(),
+            decay=args.ema_decay,
+            update_after_step=args.ema_update_after_step,
+            model_cls=UVit2DModel,
+            model_config=model.config,
+        )
+
+    def save_model_hook(models, weights, output_dir):
+        if accelerator.is_main_process:
+            transformer_lora_layers_to_save = None
+            text_encoder_lora_layers_to_save = None
+
+            for model_ in models:
+                if isinstance(model_, type(accelerator.unwrap_model(model))):
+                    if args.use_lora:
+                        transformer_lora_layers_to_save = get_peft_model_state_dict(model_)
+                    else:
+                        model_.save_pretrained(os.path.join(output_dir, "transformer"))
+                elif isinstance(model_, type(accelerator.unwrap_model(text_encoder))):
+                    if args.text_encoder_use_lora:
+                        text_encoder_lora_layers_to_save = get_peft_model_state_dict(model_)
+                    else:
+                        model_.save_pretrained(os.path.join(output_dir, "text_encoder"))
+                else:
+                    raise ValueError(f"unexpected save model: {model_.__class__}")
+
+                # make sure to pop weight so that corresponding model is not saved again
+                weights.pop()
+
+            if transformer_lora_layers_to_save is not None or text_encoder_lora_layers_to_save is not None:
+                LoraLoaderMixin.save_lora_weights(
+                    output_dir,
+                    transformer_lora_layers=transformer_lora_layers_to_save,
+                    text_encoder_lora_layers=text_encoder_lora_layers_to_save,
+                )
+
+            if args.use_ema:
+                ema.save_pretrained(os.path.join(output_dir, "ema_model"))
+
+    def load_model_hook(models, input_dir):
+        transformer = None
+        text_encoder_ = None
+
+        while len(models) > 0:
+            model_ = models.pop()
+
+            if isinstance(model_, type(accelerator.unwrap_model(model))):
+                if args.use_lora:
+                    transformer = model_
+                else:
+                    load_model = UVit2DModel.from_pretrained(os.path.join(input_dir, "transformer"))
+                    model_.load_state_dict(load_model.state_dict())
+                    del load_model
+            elif isinstance(model, type(accelerator.unwrap_model(text_encoder))):
+                if args.text_encoder_use_lora:
+                    text_encoder_ = model_
+                else:
+                    load_model = CLIPTextModelWithProjection.from_pretrained(os.path.join(input_dir, "text_encoder"))
+                    model_.load_state_dict(load_model.state_dict())
+                    del load_model
+            else:
+                raise ValueError(f"unexpected save model: {model.__class__}")
+
+        if transformer is not None or text_encoder_ is not None:
+            lora_state_dict, network_alphas = LoraLoaderMixin.lora_state_dict(input_dir)
+            LoraLoaderMixin.load_lora_into_text_encoder(
+                lora_state_dict, network_alphas=network_alphas, text_encoder=text_encoder_
+            )
+            LoraLoaderMixin.load_lora_into_transformer(
+                lora_state_dict, network_alphas=network_alphas, transformer=transformer
+            )
+
+        if args.use_ema:
+            load_from = EMAModel.from_pretrained(os.path.join(input_dir, "ema_model"), model_cls=UVit2DModel)
+            ema.load_state_dict(load_from.state_dict())
+            del load_from
+
+    accelerator.register_load_state_pre_hook(load_model_hook)
+    accelerator.register_save_state_pre_hook(save_model_hook)
+
+    if args.scale_lr:
+        args.learning_rate = (
+            args.learning_rate * args.train_batch_size * accelerator.num_processes * args.gradient_accumulation_steps
+        )
+
+    if args.use_8bit_adam:
+        try:
+            import bitsandbytes as bnb
+        except ImportError:
+            raise ImportError(
+                "Please install bitsandbytes to use 8-bit Adam. You can do so by running `pip install bitsandbytes`"
+            )
+
+        optimizer_cls = bnb.optim.AdamW8bit
+    else:
+        optimizer_cls = torch.optim.AdamW
+
+    # no decay on bias and layernorm and embedding
+    no_decay = ["bias", "layer_norm.weight", "mlm_ln.weight", "embeddings.weight"]
+    optimizer_grouped_parameters = [
+        {
+            "params": [p for n, p in model.named_parameters() if not any(nd in n for nd in no_decay)],
+            "weight_decay": args.adam_weight_decay,
+        },
+        {
+            "params": [p for n, p in model.named_parameters() if any(nd in n for nd in no_decay)],
+            "weight_decay": 0.0,
+        },
+    ]
+
+    if args.train_text_encoder:
+        optimizer_grouped_parameters.append(
+            {"params": text_encoder.parameters(), "weight_decay": args.adam_weight_decay}
+        )
+
+    optimizer = optimizer_cls(
+        optimizer_grouped_parameters,
+        lr=args.learning_rate,
+        betas=(args.adam_beta1, args.adam_beta2),
+        weight_decay=args.adam_weight_decay,
+        eps=args.adam_epsilon,
+    )
+
+    logger.info("Creating dataloaders and lr_scheduler")
+
+    total_batch_size = args.train_batch_size * accelerator.num_processes * args.gradient_accumulation_steps
+
+    if args.instance_data_dir is not None:
+        dataset = InstanceDataRootDataset(
+            instance_data_root=args.instance_data_dir,
+            tokenizer=tokenizer,
+            size=args.resolution,
+        )
+    elif args.instance_data_image is not None:
+        dataset = InstanceDataImageDataset(
+            instance_data_image=args.instance_data_image,
+            train_batch_size=args.train_batch_size,
+            size=args.resolution,
+        )
+    elif args.instance_data_dataset is not None:
+        dataset = HuggingFaceDataset(
+            hf_dataset=load_dataset(args.instance_data_dataset, split="train"),
+            tokenizer=tokenizer,
+            image_key=args.image_key,
+            prompt_key=args.prompt_key,
+            prompt_prefix=args.prompt_prefix,
+            size=args.resolution,
+        )
+    else:
+        assert False
+
+    train_dataloader = DataLoader(
+        dataset,
+        batch_size=args.train_batch_size,
+        shuffle=True,
+        num_workers=args.dataloader_num_workers,
+        collate_fn=default_collate,
+    )
+    train_dataloader.num_batches = len(train_dataloader)
+
+    lr_scheduler = diffusers.optimization.get_scheduler(
+        args.lr_scheduler,
+        optimizer=optimizer,
+        num_training_steps=args.max_train_steps * accelerator.num_processes,
+        num_warmup_steps=args.lr_warmup_steps * accelerator.num_processes,
+    )
+
+    logger.info("Preparing model, optimizer and dataloaders")
+
+    if args.train_text_encoder:
+        model, optimizer, lr_scheduler, train_dataloader, text_encoder = accelerator.prepare(
+            model, optimizer, lr_scheduler, train_dataloader, text_encoder
+        )
+    else:
+        model, optimizer, lr_scheduler, train_dataloader = accelerator.prepare(
+            model, optimizer, lr_scheduler, train_dataloader
+        )
+
+    train_dataloader.num_batches = len(train_dataloader)
+
+    weight_dtype = torch.float32
+    if accelerator.mixed_precision == "fp16":
+        weight_dtype = torch.float16
+    elif accelerator.mixed_precision == "bf16":
+        weight_dtype = torch.bfloat16
+
+    if not args.train_text_encoder:
+        text_encoder.to(device=accelerator.device, dtype=weight_dtype)
+
+    vq_model.to(device=accelerator.device)
+
+    if args.use_ema:
+        ema.to(accelerator.device)
+
+    with nullcontext() if args.train_text_encoder else torch.no_grad():
+        empty_embeds, empty_clip_embeds = encode_prompt(
+            text_encoder, tokenize_prompt(tokenizer, "").to(text_encoder.device, non_blocking=True)
+        )
+
+        # There is a single image, we can just pre-encode the single prompt
+        if args.instance_data_image is not None:
+            prompt = os.path.splitext(os.path.basename(args.instance_data_image))[0]
+            encoder_hidden_states, cond_embeds = encode_prompt(
+                text_encoder, tokenize_prompt(tokenizer, prompt).to(text_encoder.device, non_blocking=True)
+            )
+            encoder_hidden_states = encoder_hidden_states.repeat(args.train_batch_size, 1, 1)
+            cond_embeds = cond_embeds.repeat(args.train_batch_size, 1)
+
+    # We need to recalculate our total training steps as the size of the training dataloader may have changed.
+    num_update_steps_per_epoch = math.ceil(train_dataloader.num_batches / args.gradient_accumulation_steps)
+    # Afterwards we recalculate our number of training epochs.
+    # Note: We are not doing epoch based training here, but just using this for book keeping and being able to
+    # reuse the same training loop with other datasets/loaders.
+    num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
+
+    # Train!
+    logger.info("***** Running training *****")
+    logger.info(f"  Num training steps = {args.max_train_steps}")
+    logger.info(f"  Instantaneous batch size per device = { args.train_batch_size}")
+    logger.info(f"  Total train batch size (w. parallel, distributed & accumulation) = {total_batch_size}")
+    logger.info(f"  Gradient Accumulation steps = {args.gradient_accumulation_steps}")
+
+    resume_from_checkpoint = args.resume_from_checkpoint
+    if resume_from_checkpoint:
+        if resume_from_checkpoint == "latest":
+            # Get the most recent checkpoint
+            dirs = os.listdir(args.output_dir)
+            dirs = [d for d in dirs if d.startswith("checkpoint")]
+            dirs = sorted(dirs, key=lambda x: int(x.split("-")[1]))
+            if len(dirs) > 0:
+                resume_from_checkpoint = os.path.join(args.output_dir, dirs[-1])
+            else:
+                resume_from_checkpoint = None
+
+        if resume_from_checkpoint is None:
+            accelerator.print(
+                f"Checkpoint '{args.resume_from_checkpoint}' does not exist. Starting a new training run."
+            )
+        else:
+            accelerator.print(f"Resuming from checkpoint {resume_from_checkpoint}")
+
+    if resume_from_checkpoint is None:
+        global_step = 0
+        first_epoch = 0
+    else:
+        accelerator.load_state(resume_from_checkpoint)
+        global_step = int(os.path.basename(resume_from_checkpoint).split("-")[1])
+        first_epoch = global_step // num_update_steps_per_epoch
+
+    # As stated above, we are not doing epoch based training here, but just using this for book keeping and being able to
+    # reuse the same training loop with other datasets/loaders.
+    for epoch in range(first_epoch, num_train_epochs):
+        for batch in train_dataloader:
+            with torch.no_grad():
+                micro_conds = batch["micro_conds"].to(accelerator.device, non_blocking=True)
+                pixel_values = batch["image"].to(accelerator.device, non_blocking=True)
+
+                batch_size = pixel_values.shape[0]
+
+                split_batch_size = args.split_vae_encode if args.split_vae_encode is not None else batch_size
+                num_splits = math.ceil(batch_size / split_batch_size)
+                image_tokens = []
+                for i in range(num_splits):
+                    start_idx = i * split_batch_size
+                    end_idx = min((i + 1) * split_batch_size, batch_size)
+                    bs = pixel_values.shape[0]
+                    image_tokens.append(
+                        vq_model.quantize(vq_model.encode(pixel_values[start_idx:end_idx]).latents)[2][2].reshape(
+                            bs, -1
+                        )
+                    )
+                image_tokens = torch.cat(image_tokens, dim=0)
+
+                batch_size, seq_len = image_tokens.shape
+
+                timesteps = torch.rand(batch_size, device=image_tokens.device)
+                mask_prob = torch.cos(timesteps * math.pi * 0.5)
+                mask_prob = mask_prob.clip(args.min_masking_rate)
+
+                num_token_masked = (seq_len * mask_prob).round().clamp(min=1)
+                batch_randperm = torch.rand(batch_size, seq_len, device=image_tokens.device).argsort(dim=-1)
+                mask = batch_randperm < num_token_masked.unsqueeze(-1)
+
+                mask_id = accelerator.unwrap_model(model).config.vocab_size - 1
+                input_ids = torch.where(mask, mask_id, image_tokens)
+                labels = torch.where(mask, image_tokens, -100)
+
+                if args.cond_dropout_prob > 0.0:
+                    assert encoder_hidden_states is not None
+
+                    batch_size = encoder_hidden_states.shape[0]
+
+                    mask = (
+                        torch.zeros((batch_size, 1, 1), device=encoder_hidden_states.device).float().uniform_(0, 1)
+                        < args.cond_dropout_prob
+                    )
+
+                    empty_embeds_ = empty_embeds.expand(batch_size, -1, -1)
+                    encoder_hidden_states = torch.where(
+                        (encoder_hidden_states * mask).bool(), encoder_hidden_states, empty_embeds_
+                    )
+
+                    empty_clip_embeds_ = empty_clip_embeds.expand(batch_size, -1)
+                    cond_embeds = torch.where((cond_embeds * mask.squeeze(-1)).bool(), cond_embeds, empty_clip_embeds_)
+
+                bs = input_ids.shape[0]
+                vae_scale_factor = 2 ** (len(vq_model.config.block_out_channels) - 1)
+                resolution = args.resolution // vae_scale_factor
+                input_ids = input_ids.reshape(bs, resolution, resolution)
+
+            if "prompt_input_ids" in batch:
+                with nullcontext() if args.train_text_encoder else torch.no_grad():
+                    encoder_hidden_states, cond_embeds = encode_prompt(
+                        text_encoder, batch["prompt_input_ids"].to(accelerator.device, non_blocking=True)
+                    )
+
+            # Train Step
+            with accelerator.accumulate(model):
+                codebook_size = accelerator.unwrap_model(model).config.codebook_size
+
+                logits = (
+                    model(
+                        input_ids=input_ids,
+                        encoder_hidden_states=encoder_hidden_states,
+                        micro_conds=micro_conds,
+                        pooled_text_emb=cond_embeds,
+                    )
+                    .reshape(bs, codebook_size, -1)
+                    .permute(0, 2, 1)
+                    .reshape(-1, codebook_size)
+                )
+
+                loss = F.cross_entropy(
+                    logits,
+                    labels.view(-1),
+                    ignore_index=-100,
+                    reduction="mean",
+                )
+
+                # Gather the losses across all processes for logging (if we use distributed training).
+                avg_loss = accelerator.gather(loss.repeat(args.train_batch_size)).mean()
+                avg_masking_rate = accelerator.gather(mask_prob.repeat(args.train_batch_size)).mean()
+
+                accelerator.backward(loss)
+
+                if args.max_grad_norm is not None and accelerator.sync_gradients:
+                    accelerator.clip_grad_norm_(model.parameters(), args.max_grad_norm)
+
+                optimizer.step()
+                lr_scheduler.step()
+
+                optimizer.zero_grad(set_to_none=True)
+
+            # Checks if the accelerator has performed an optimization step behind the scenes
+            if accelerator.sync_gradients:
+                if args.use_ema:
+                    ema.step(model.parameters())
+
+                if (global_step + 1) % args.logging_steps == 0:
+                    logs = {
+                        "step_loss": avg_loss.item(),
+                        "lr": lr_scheduler.get_last_lr()[0],
+                        "avg_masking_rate": avg_masking_rate.item(),
+                    }
+                    accelerator.log(logs, step=global_step + 1)
+
+                    logger.info(
+                        f"Step: {global_step + 1} "
+                        f"Loss: {avg_loss.item():0.4f} "
+                        f"LR: {lr_scheduler.get_last_lr()[0]:0.6f}"
+                    )
+
+                if (global_step + 1) % args.checkpointing_steps == 0:
+                    save_checkpoint(args, accelerator, global_step + 1)
+
+                if (global_step + 1) % args.validation_steps == 0 and accelerator.is_main_process:
+                    if args.use_ema:
+                        ema.store(model.parameters())
+                        ema.copy_to(model.parameters())
+
+                    with torch.no_grad():
+                        logger.info("Generating images...")
+
+                        model.eval()
+
+                        if args.train_text_encoder:
+                            text_encoder.eval()
+
+                        scheduler = AmusedScheduler.from_pretrained(
+                            args.pretrained_model_name_or_path,
+                            subfolder="scheduler",
+                            revision=args.revision,
+                            variant=args.variant,
+                        )
+
+                        pipe = AmusedPipeline(
+                            transformer=accelerator.unwrap_model(model),
+                            tokenizer=tokenizer,
+                            text_encoder=text_encoder,
+                            vqvae=vq_model,
+                            scheduler=scheduler,
+                        )
+
+                        pil_images = pipe(prompt=args.validation_prompts).images
+                        wandb_images = [
+                            wandb.Image(image, caption=args.validation_prompts[i])
+                            for i, image in enumerate(pil_images)
+                        ]
+
+                        wandb.log({"generated_images": wandb_images}, step=global_step + 1)
+
+                        model.train()
+
+                        if args.train_text_encoder:
+                            text_encoder.train()
+
+                    if args.use_ema:
+                        ema.restore(model.parameters())
+
+                global_step += 1
+
+            # Stop training if max steps is reached
+            if global_step >= args.max_train_steps:
+                break
+        # End for
+
+    accelerator.wait_for_everyone()
+
+    # Evaluate and save checkpoint at the end of training
+    save_checkpoint(args, accelerator, global_step)
+
+    # Save the final trained checkpoint
+    if accelerator.is_main_process:
+        model = accelerator.unwrap_model(model)
+        if args.use_ema:
+            ema.copy_to(model.parameters())
+        model.save_pretrained(args.output_dir)
+
+    accelerator.end_training()
+
+
+def save_checkpoint(args, accelerator, global_step):
+    output_dir = args.output_dir
+
+    # _before_ saving state, check if this save would set us over the `checkpoints_total_limit`
+    if accelerator.is_main_process and args.checkpoints_total_limit is not None:
+        checkpoints = os.listdir(output_dir)
+        checkpoints = [d for d in checkpoints if d.startswith("checkpoint")]
+        checkpoints = sorted(checkpoints, key=lambda x: int(x.split("-")[1]))
+
+        # before we save the new checkpoint, we need to have at _most_ `checkpoints_total_limit - 1` checkpoints
+        if len(checkpoints) >= args.checkpoints_total_limit:
+            num_to_remove = len(checkpoints) - args.checkpoints_total_limit + 1
+            removing_checkpoints = checkpoints[0:num_to_remove]
+
+            logger.info(
+                f"{len(checkpoints)} checkpoints already exist, removing {len(removing_checkpoints)} checkpoints"
+            )
+            logger.info(f"removing checkpoints: {', '.join(removing_checkpoints)}")
+
+            for removing_checkpoint in removing_checkpoints:
+                removing_checkpoint = os.path.join(output_dir, removing_checkpoint)
+                shutil.rmtree(removing_checkpoint)
+
+    save_path = Path(output_dir) / f"checkpoint-{global_step}"
+    accelerator.save_state(save_path)
+    logger.info(f"Saved state to {save_path}")
+
+
+if __name__ == "__main__":
+    main(parse_args())

examples/community/README.md

@@ -8,6 +8,7 @@ If a community doesn't work as expected, please open an issue and ping the autho
 
 | Example                                                                                                                               | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Code Example                                                                              | Colab                                                                                                                                                                                                              |                                                        Author |
 |:--------------------------------------------------------------------------------------------------------------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:------------------------------------------------------------------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------:|
+| Marigold Monocular Depth Estimation                                                                                                   | A universal monocular depth estimator, utilizing Stable Diffusion, delivering sharp predictions in the wild. (See the [project page](https://marigoldmonodepth.github.io) and [full codebase](https://github.com/prs-eth/marigold) for more details.)                                                                                                                                                                                                                                                        | [Marigold Depth Estimation](#marigold-depth-estimation)                                   | [![Hugging Face Space](https://img.shields.io/badge/🤗%20Hugging%20Face-Space-yellow)](https://huggingface.co/spaces/toshas/marigold) [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/drive/12G8reD13DdpMie5ZQlaFNo2WCGeNUH-u?usp=sharing) | [Bingxin Ke](https://github.com/markkua) and [Anton Obukhov](https://github.com/toshas) |
 | LLM-grounded Diffusion (LMD+)                                                                                                         | LMD greatly improves the prompt following ability of text-to-image generation models by introducing an LLM as a front-end prompt parser and layout planner. [Project page.](https://llm-grounded-diffusion.github.io/) [See our full codebase (also with diffusers).](https://github.com/TonyLianLong/LLM-groundedDiffusion)                                                                                                                                                                                                                                                                                                                                                                                                                                   | [LLM-grounded Diffusion (LMD+)](#llm-grounded-diffusion)                             | [Huggingface Demo](https://huggingface.co/spaces/longlian/llm-grounded-diffusion) [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/drive/1SXzMSeAB-LJYISb2yrUOdypLz4OYWUKj) |                [Long (Tony) Lian](https://tonylian.com/) |
 | CLIP Guided Stable Diffusion                                                                                                          | Doing CLIP guidance for text to image generation with Stable Diffusion                                                                                                                                                                                                                                                                                                                                                                                                                                   | [CLIP Guided Stable Diffusion](#clip-guided-stable-diffusion)                             | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers/CLIP_Guided_Stable_diffusion_with_diffusers.ipynb) |                [Suraj Patil](https://github.com/patil-suraj/) |
 | One Step U-Net (Dummy)                                                                                                                | Example showcasing of how to use Community Pipelines (see https://github.com/huggingface/diffusers/issues/841)                                                                                                                                                                                                                                                                                                                                                                                           | [One Step U-Net](#one-step-unet)                                                          | -                                                                                                                                                                                                                  |    [Patrick von Platen](https://github.com/patrickvonplaten/) |
@@ -61,6 +62,53 @@ pipe = DiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", custo
 
 ## Example usages
 
+### Marigold Depth Estimation
+
+Marigold is a universal monocular depth estimator that delivers accurate and sharp predictions in the wild. Based on Stable Diffusion, it is trained exclusively with synthetic depth data and excels in zero-shot adaptation to real-world imagery. This pipeline is an official implementation of the inference process. More details can be found on our [project page](https://marigoldmonodepth.github.io) and [full codebase](https://github.com/prs-eth/marigold) (also implemented with diffusers).
+
+![Marigold Teaser](https://marigoldmonodepth.github.io/images/teaser_collage_compressed.jpg)
+
+This depth estimation pipeline processes a single input image through multiple diffusion denoising stages to estimate depth maps. These maps are subsequently merged to produce the final output. Below is an example code snippet, including optional arguments:
+
+```python
+import numpy as np
+from PIL import Image
+from diffusers import DiffusionPipeline
+from diffusers.utils import load_image
+
+pipe = DiffusionPipeline.from_pretrained(
+    "Bingxin/Marigold",
+    custom_pipeline="marigold_depth_estimation"
+    # torch_dtype=torch.float16,                # (optional) Run with half-precision (16-bit float).
+)
+
+pipe.to("cuda")
+
+img_path_or_url = "https://share.phys.ethz.ch/~pf/bingkedata/marigold/pipeline_example.jpg"
+image: Image.Image = load_image(img_path_or_url)
+
+pipeline_output = pipe(
+    image,                  # Input image.
+    # denoising_steps=10,     # (optional) Number of denoising steps of each inference pass. Default: 10.
+    # ensemble_size=10,       # (optional) Number of inference passes in the ensemble. Default: 10.
+    # processing_res=768,     # (optional) Maximum resolution of processing. If set to 0: will not resize at all. Defaults to 768.
+    # match_input_res=True,   # (optional) Resize depth prediction to match input resolution.
+    # batch_size=0,           # (optional) Inference batch size, no bigger than `num_ensemble`. If set to 0, the script will automatically decide the proper batch size. Defaults to 0.
+    # color_map="Spectral",   # (optional) Colormap used to colorize the depth map. Defaults to "Spectral".
+    # show_progress_bar=True, # (optional) If true, will show progress bars of the inference progress.
+)
+
+depth: np.ndarray = pipeline_output.depth_np                    # Predicted depth map
+depth_colored: Image.Image = pipeline_output.depth_colored      # Colorized prediction
+
+# Save as uint16 PNG
+depth_uint16 = (depth * 65535.0).astype(np.uint16)
+Image.fromarray(depth_uint16).save("./depth_map.png", mode="I;16")
+
+# Save colorized depth map
+depth_colored.save("./depth_colored.png")
+```
+
 ### LLM-grounded Diffusion
 
 LMD and LMD+ greatly improves the prompt understanding ability of text-to-image generation models by introducing an LLM as a front-end prompt parser and layout planner. It improves spatial reasoning, the understanding of negation, attribute binding, generative numeracy, etc. in a unified manner without explicitly aiming for each. LMD is completely training-free (i.e., uses SD model off-the-shelf). LMD+ takes in additional adapters for better control. This is a reproduction of LMD+ model used in our work. [Project page.](https://llm-grounded-diffusion.github.io/) [See our full codebase (also with diffusers).](https://github.com/TonyLianLong/LLM-groundedDiffusion)

examples/community/marigold_depth_estimation.py

@@ -0,0 +1,602 @@
+# Copyright 2023 Bingxin Ke, ETH Zurich and The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# --------------------------------------------------------------------------
+# If you find this code useful, we kindly ask you to cite our paper in your work.
+# Please find bibtex at: https://github.com/prs-eth/Marigold#-citation
+# More information about the method can be found at https://marigoldmonodepth.github.io
+# --------------------------------------------------------------------------
+
+
+import math
+from typing import Dict, Union
+
+import matplotlib
+import numpy as np
+import torch
+from PIL import Image
+from scipy.optimize import minimize
+from torch.utils.data import DataLoader, TensorDataset
+from tqdm.auto import tqdm
+from transformers import CLIPTextModel, CLIPTokenizer
+
+from diffusers import (
+    AutoencoderKL,
+    DDIMScheduler,
+    DiffusionPipeline,
+    UNet2DConditionModel,
+)
+from diffusers.utils import BaseOutput, check_min_version
+
+
+# Will error if the minimal version of diffusers is not installed. Remove at your own risks.
+check_min_version("0.20.1.dev0")
+
+
+class MarigoldDepthOutput(BaseOutput):
+    """
+    Output class for Marigold monocular depth prediction pipeline.
+
+    Args:
+        depth_np (`np.ndarray`):
+            Predicted depth map, with depth values in the range of [0, 1].
+        depth_colored (`PIL.Image.Image`):
+            Colorized depth map, with the shape of [3, H, W] and values in [0, 1].
+        uncertainty (`None` or `np.ndarray`):
+            Uncalibrated uncertainty(MAD, median absolute deviation) coming from ensembling.
+    """
+
+    depth_np: np.ndarray
+    depth_colored: Image.Image
+    uncertainty: Union[None, np.ndarray]
+
+
+class MarigoldPipeline(DiffusionPipeline):
+    """
+    Pipeline for monocular depth estimation using Marigold: https://marigoldmonodepth.github.io.
+
+    This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods the
+    library implements for all the pipelines (such as downloading or saving, running on a particular device, etc.)
+
+    Args:
+        unet (`UNet2DConditionModel`):
+            Conditional U-Net to denoise the depth latent, conditioned on image latent.
+        vae (`AutoencoderKL`):
+            Variational Auto-Encoder (VAE) Model to encode and decode images and depth maps
+            to and from latent representations.
+        scheduler (`DDIMScheduler`):
+            A scheduler to be used in combination with `unet` to denoise the encoded image latents.
+        text_encoder (`CLIPTextModel`):
+            Text-encoder, for empty text embedding.
+        tokenizer (`CLIPTokenizer`):
+            CLIP tokenizer.
+    """
+
+    rgb_latent_scale_factor = 0.18215
+    depth_latent_scale_factor = 0.18215
+
+    def __init__(
+        self,
+        unet: UNet2DConditionModel,
+        vae: AutoencoderKL,
+        scheduler: DDIMScheduler,
+        text_encoder: CLIPTextModel,
+        tokenizer: CLIPTokenizer,
+    ):
+        super().__init__()
+
+        self.register_modules(
+            unet=unet,
+            vae=vae,
+            scheduler=scheduler,
+            text_encoder=text_encoder,
+            tokenizer=tokenizer,
+        )
+
+        self.empty_text_embed = None
+
+    @torch.no_grad()
+    def __call__(
+        self,
+        input_image: Image,
+        denoising_steps: int = 10,
+        ensemble_size: int = 10,
+        processing_res: int = 768,
+        match_input_res: bool = True,
+        batch_size: int = 0,
+        color_map: str = "Spectral",
+        show_progress_bar: bool = True,
+        ensemble_kwargs: Dict = None,
+    ) -> MarigoldDepthOutput:
+        """
+        Function invoked when calling the pipeline.
+
+        Args:
+            input_image (`Image`):
+                Input RGB (or gray-scale) image.
+            processing_res (`int`, *optional*, defaults to `768`):
+                Maximum resolution of processing.
+                If set to 0: will not resize at all.
+            match_input_res (`bool`, *optional*, defaults to `True`):
+                Resize depth prediction to match input resolution.
+                Only valid if `limit_input_res` is not None.
+            denoising_steps (`int`, *optional*, defaults to `10`):
+                Number of diffusion denoising steps (DDIM) during inference.
+            ensemble_size (`int`, *optional*, defaults to `10`):
+                Number of predictions to be ensembled.
+            batch_size (`int`, *optional*, defaults to `0`):
+                Inference batch size, no bigger than `num_ensemble`.
+                If set to 0, the script will automatically decide the proper batch size.
+            show_progress_bar (`bool`, *optional*, defaults to `True`):
+                Display a progress bar of diffusion denoising.
+            color_map (`str`, *optional*, defaults to `"Spectral"`):
+                Colormap used to colorize the depth map.
+            ensemble_kwargs (`dict`, *optional*, defaults to `None`):
+                Arguments for detailed ensembling settings.
+        Returns:
+            `MarigoldDepthOutput`: Output class for Marigold monocular depth prediction pipeline, including:
+            - **depth_np** (`np.ndarray`) Predicted depth map, with depth values in the range of [0, 1]
+            - **depth_colored** (`PIL.Image.Image`) Colorized depth map, with the shape of [3, H, W] and values in [0, 1]
+            - **uncertainty** (`None` or `np.ndarray`) Uncalibrated uncertainty(MAD, median absolute deviation)
+                    coming from ensembling. None if `ensemble_size = 1`
+        """
+
+        device = self.device
+        input_size = input_image.size
+
+        if not match_input_res:
+            assert processing_res is not None, "Value error: `resize_output_back` is only valid with "
+        assert processing_res >= 0
+        assert denoising_steps >= 1
+        assert ensemble_size >= 1
+
+        # ----------------- Image Preprocess -----------------
+        # Resize image
+        if processing_res > 0:
+            input_image = self.resize_max_res(input_image, max_edge_resolution=processing_res)
+        # Convert the image to RGB, to 1.remove the alpha channel 2.convert B&W to 3-channel
+        input_image = input_image.convert("RGB")
+        image = np.asarray(input_image)
+
+        # Normalize rgb values
+        rgb = np.transpose(image, (2, 0, 1))  # [H, W, rgb] -> [rgb, H, W]
+        rgb_norm = rgb / 255.0
+        rgb_norm = torch.from_numpy(rgb_norm).to(self.dtype)
+        rgb_norm = rgb_norm.to(device)
+        assert rgb_norm.min() >= 0.0 and rgb_norm.max() <= 1.0
+
+        # ----------------- Predicting depth -----------------
+        # Batch repeated input image
+        duplicated_rgb = torch.stack([rgb_norm] * ensemble_size)
+        single_rgb_dataset = TensorDataset(duplicated_rgb)
+        if batch_size > 0:
+            _bs = batch_size
+        else:
+            _bs = self._find_batch_size(
+                ensemble_size=ensemble_size,
+                input_res=max(rgb_norm.shape[1:]),
+                dtype=self.dtype,
+            )
+
+        single_rgb_loader = DataLoader(single_rgb_dataset, batch_size=_bs, shuffle=False)
+
+        # Predict depth maps (batched)
+        depth_pred_ls = []
+        if show_progress_bar:
+            iterable = tqdm(single_rgb_loader, desc=" " * 2 + "Inference batches", leave=False)
+        else:
+            iterable = single_rgb_loader
+        for batch in iterable:
+            (batched_img,) = batch
+            depth_pred_raw = self.single_infer(
+                rgb_in=batched_img,
+                num_inference_steps=denoising_steps,
+                show_pbar=show_progress_bar,
+            )
+            depth_pred_ls.append(depth_pred_raw.detach().clone())
+        depth_preds = torch.concat(depth_pred_ls, axis=0).squeeze()
+        torch.cuda.empty_cache()  # clear vram cache for ensembling
+
+        # ----------------- Test-time ensembling -----------------
+        if ensemble_size > 1:
+            depth_pred, pred_uncert = self.ensemble_depths(depth_preds, **(ensemble_kwargs or {}))
+        else:
+            depth_pred = depth_preds
+            pred_uncert = None
+
+        # ----------------- Post processing -----------------
+        # Scale prediction to [0, 1]
+        min_d = torch.min(depth_pred)
+        max_d = torch.max(depth_pred)
+        depth_pred = (depth_pred - min_d) / (max_d - min_d)
+
+        # Convert to numpy
+        depth_pred = depth_pred.cpu().numpy().astype(np.float32)
+
+        # Resize back to original resolution
+        if match_input_res:
+            pred_img = Image.fromarray(depth_pred)
+            pred_img = pred_img.resize(input_size)
+            depth_pred = np.asarray(pred_img)
+
+        # Clip output range
+        depth_pred = depth_pred.clip(0, 1)
+
+        # Colorize
+        depth_colored = self.colorize_depth_maps(
+            depth_pred, 0, 1, cmap=color_map
+        ).squeeze()  # [3, H, W], value in (0, 1)
+        depth_colored = (depth_colored * 255).astype(np.uint8)
+        depth_colored_hwc = self.chw2hwc(depth_colored)
+        depth_colored_img = Image.fromarray(depth_colored_hwc)
+        return MarigoldDepthOutput(
+            depth_np=depth_pred,
+            depth_colored=depth_colored_img,
+            uncertainty=pred_uncert,
+        )
+
+    def _encode_empty_text(self):
+        """
+        Encode text embedding for empty prompt.
+        """
+        prompt = ""
+        text_inputs = self.tokenizer(
+            prompt,
+            padding="do_not_pad",
+            max_length=self.tokenizer.model_max_length,
+            truncation=True,
+            return_tensors="pt",
+        )
+        text_input_ids = text_inputs.input_ids.to(self.text_encoder.device)
+        self.empty_text_embed = self.text_encoder(text_input_ids)[0].to(self.dtype)
+
+    @torch.no_grad()
+    def single_infer(self, rgb_in: torch.Tensor, num_inference_steps: int, show_pbar: bool) -> torch.Tensor:
+        """
+        Perform an individual depth prediction without ensembling.
+
+        Args:
+            rgb_in (`torch.Tensor`):
+                Input RGB image.
+            num_inference_steps (`int`):
+                Number of diffusion denoisign steps (DDIM) during inference.
+            show_pbar (`bool`):
+                Display a progress bar of diffusion denoising.
+        Returns:
+            `torch.Tensor`: Predicted depth map.
+        """
+        device = rgb_in.device
+
+        # Set timesteps
+        self.scheduler.set_timesteps(num_inference_steps, device=device)
+        timesteps = self.scheduler.timesteps  # [T]
+
+        # Encode image
+        rgb_latent = self._encode_rgb(rgb_in)
+
+        # Initial depth map (noise)
+        depth_latent = torch.randn(rgb_latent.shape, device=device, dtype=self.dtype)  # [B, 4, h, w]
+
+        # Batched empty text embedding
+        if self.empty_text_embed is None:
+            self._encode_empty_text()
+        batch_empty_text_embed = self.empty_text_embed.repeat((rgb_latent.shape[0], 1, 1))  # [B, 2, 1024]
+
+        # Denoising loop
+        if show_pbar:
+            iterable = tqdm(
+                enumerate(timesteps),
+                total=len(timesteps),
+                leave=False,
+                desc=" " * 4 + "Diffusion denoising",
+            )
+        else:
+            iterable = enumerate(timesteps)
+
+        for i, t in iterable:
+            unet_input = torch.cat([rgb_latent, depth_latent], dim=1)  # this order is important
+
+            # predict the noise residual
+            noise_pred = self.unet(unet_input, t, encoder_hidden_states=batch_empty_text_embed).sample  # [B, 4, h, w]
+
+            # compute the previous noisy sample x_t -> x_t-1
+            depth_latent = self.scheduler.step(noise_pred, t, depth_latent).prev_sample
+        torch.cuda.empty_cache()
+        depth = self._decode_depth(depth_latent)
+
+        # clip prediction
+        depth = torch.clip(depth, -1.0, 1.0)
+        # shift to [0, 1]
+        depth = (depth + 1.0) / 2.0
+
+        return depth
+
+    def _encode_rgb(self, rgb_in: torch.Tensor) -> torch.Tensor:
+        """
+        Encode RGB image into latent.
+
+        Args:
+            rgb_in (`torch.Tensor`):
+                Input RGB image to be encoded.
+
+        Returns:
+            `torch.Tensor`: Image latent.
+        """
+        # encode
+        h = self.vae.encoder(rgb_in)
+        moments = self.vae.quant_conv(h)
+        mean, logvar = torch.chunk(moments, 2, dim=1)
+        # scale latent
+        rgb_latent = mean * self.rgb_latent_scale_factor
+        return rgb_latent
+
+    def _decode_depth(self, depth_latent: torch.Tensor) -> torch.Tensor:
+        """
+        Decode depth latent into depth map.
+
+        Args:
+            depth_latent (`torch.Tensor`):
+                Depth latent to be decoded.
+
+        Returns:
+            `torch.Tensor`: Decoded depth map.
+        """
+        # scale latent
+        depth_latent = depth_latent / self.depth_latent_scale_factor
+        # decode
+        z = self.vae.post_quant_conv(depth_latent)
+        stacked = self.vae.decoder(z)
+        # mean of output channels
+        depth_mean = stacked.mean(dim=1, keepdim=True)
+        return depth_mean
+
+    @staticmethod
+    def resize_max_res(img: Image.Image, max_edge_resolution: int) -> Image.Image:
+        """
+        Resize image to limit maximum edge length while keeping aspect ratio.
+
+        Args:
+            img (`Image.Image`):
+                Image to be resized.
+            max_edge_resolution (`int`):
+                Maximum edge length (pixel).
+
+        Returns:
+            `Image.Image`: Resized image.
+        """
+        original_width, original_height = img.size
+        downscale_factor = min(max_edge_resolution / original_width, max_edge_resolution / original_height)
+
+        new_width = int(original_width * downscale_factor)
+        new_height = int(original_height * downscale_factor)
+
+        resized_img = img.resize((new_width, new_height))
+        return resized_img
+
+    @staticmethod
+    def colorize_depth_maps(depth_map, min_depth, max_depth, cmap="Spectral", valid_mask=None):
+        """
+        Colorize depth maps.
+        """
+        assert len(depth_map.shape) >= 2, "Invalid dimension"
+
+        if isinstance(depth_map, torch.Tensor):
+            depth = depth_map.detach().clone().squeeze().numpy()
+        elif isinstance(depth_map, np.ndarray):
+            depth = depth_map.copy().squeeze()
+        # reshape to [ (B,) H, W ]
+        if depth.ndim < 3:
+            depth = depth[np.newaxis, :, :]
+
+        # colorize
+        cm = matplotlib.colormaps[cmap]
+        depth = ((depth - min_depth) / (max_depth - min_depth)).clip(0, 1)
+        img_colored_np = cm(depth, bytes=False)[:, :, :, 0:3]  # value from 0 to 1
+        img_colored_np = np.rollaxis(img_colored_np, 3, 1)
+
+        if valid_mask is not None:
+            if isinstance(depth_map, torch.Tensor):
+                valid_mask = valid_mask.detach().numpy()
+            valid_mask = valid_mask.squeeze()  # [H, W] or [B, H, W]
+            if valid_mask.ndim < 3:
+                valid_mask = valid_mask[np.newaxis, np.newaxis, :, :]
+            else:
+                valid_mask = valid_mask[:, np.newaxis, :, :]
+            valid_mask = np.repeat(valid_mask, 3, axis=1)
+            img_colored_np[~valid_mask] = 0
+
+        if isinstance(depth_map, torch.Tensor):
+            img_colored = torch.from_numpy(img_colored_np).float()
+        elif isinstance(depth_map, np.ndarray):
+            img_colored = img_colored_np
+
+        return img_colored
+
+    @staticmethod
+    def chw2hwc(chw):
+        assert 3 == len(chw.shape)
+        if isinstance(chw, torch.Tensor):
+            hwc = torch.permute(chw, (1, 2, 0))
+        elif isinstance(chw, np.ndarray):
+            hwc = np.moveaxis(chw, 0, -1)
+        return hwc
+
+    @staticmethod
+    def _find_batch_size(ensemble_size: int, input_res: int, dtype: torch.dtype) -> int:
+        """
+        Automatically search for suitable operating batch size.
+
+        Args:
+            ensemble_size (`int`):
+                Number of predictions to be ensembled.
+            input_res (`int`):
+                Operating resolution of the input image.
+
+        Returns:
+            `int`: Operating batch size.
+        """
+        # Search table for suggested max. inference batch size
+        bs_search_table = [
+            # tested on A100-PCIE-80GB
+            {"res": 768, "total_vram": 79, "bs": 35, "dtype": torch.float32},
+            {"res": 1024, "total_vram": 79, "bs": 20, "dtype": torch.float32},
+            # tested on A100-PCIE-40GB
+            {"res": 768, "total_vram": 39, "bs": 15, "dtype": torch.float32},
+            {"res": 1024, "total_vram": 39, "bs": 8, "dtype": torch.float32},
+            {"res": 768, "total_vram": 39, "bs": 30, "dtype": torch.float16},
+            {"res": 1024, "total_vram": 39, "bs": 15, "dtype": torch.float16},
+            # tested on RTX3090, RTX4090
+            {"res": 512, "total_vram": 23, "bs": 20, "dtype": torch.float32},
+            {"res": 768, "total_vram": 23, "bs": 7, "dtype": torch.float32},
+            {"res": 1024, "total_vram": 23, "bs": 3, "dtype": torch.float32},
+            {"res": 512, "total_vram": 23, "bs": 40, "dtype": torch.float16},
+            {"res": 768, "total_vram": 23, "bs": 18, "dtype": torch.float16},
+            {"res": 1024, "total_vram": 23, "bs": 10, "dtype": torch.float16},
+            # tested on GTX1080Ti
+            {"res": 512, "total_vram": 10, "bs": 5, "dtype": torch.float32},
+            {"res": 768, "total_vram": 10, "bs": 2, "dtype": torch.float32},
+            {"res": 512, "total_vram": 10, "bs": 10, "dtype": torch.float16},
+            {"res": 768, "total_vram": 10, "bs": 5, "dtype": torch.float16},
+            {"res": 1024, "total_vram": 10, "bs": 3, "dtype": torch.float16},
+        ]
+
+        if not torch.cuda.is_available():
+            return 1
+
+        total_vram = torch.cuda.mem_get_info()[1] / 1024.0**3
+        filtered_bs_search_table = [s for s in bs_search_table if s["dtype"] == dtype]
+        for settings in sorted(
+            filtered_bs_search_table,
+            key=lambda k: (k["res"], -k["total_vram"]),
+        ):
+            if input_res <= settings["res"] and total_vram >= settings["total_vram"]:
+                bs = settings["bs"]
+                if bs > ensemble_size:
+                    bs = ensemble_size
+                elif bs > math.ceil(ensemble_size / 2) and bs < ensemble_size:
+                    bs = math.ceil(ensemble_size / 2)
+                return bs
+
+        return 1
+
+    @staticmethod
+    def ensemble_depths(
+        input_images: torch.Tensor,
+        regularizer_strength: float = 0.02,
+        max_iter: int = 2,
+        tol: float = 1e-3,
+        reduction: str = "median",
+        max_res: int = None,
+    ):
+        """
+        To ensemble multiple affine-invariant depth images (up to scale and shift),
+            by aligning estimating the scale and shift
+        """
+
+        def inter_distances(tensors: torch.Tensor):
+            """
+            To calculate the distance between each two depth maps.
+            """
+            distances = []
+            for i, j in torch.combinations(torch.arange(tensors.shape[0])):
+                arr1 = tensors[i : i + 1]
+                arr2 = tensors[j : j + 1]
+                distances.append(arr1 - arr2)
+            dist = torch.concatenate(distances, dim=0)
+            return dist
+
+        device = input_images.device
+        dtype = input_images.dtype
+        np_dtype = np.float32
+
+        original_input = input_images.clone()
+        n_img = input_images.shape[0]
+        ori_shape = input_images.shape
+
+        if max_res is not None:
+            scale_factor = torch.min(max_res / torch.tensor(ori_shape[-2:]))
+            if scale_factor < 1:
+                downscaler = torch.nn.Upsample(scale_factor=scale_factor, mode="nearest")
+                input_images = downscaler(torch.from_numpy(input_images)).numpy()
+
+        # init guess
+        _min = np.min(input_images.reshape((n_img, -1)).cpu().numpy(), axis=1)
+        _max = np.max(input_images.reshape((n_img, -1)).cpu().numpy(), axis=1)
+        s_init = 1.0 / (_max - _min).reshape((-1, 1, 1))
+        t_init = (-1 * s_init.flatten() * _min.flatten()).reshape((-1, 1, 1))
+        x = np.concatenate([s_init, t_init]).reshape(-1).astype(np_dtype)
+
+        input_images = input_images.to(device)
+
+        # objective function
+        def closure(x):
+            l = len(x)
+            s = x[: int(l / 2)]
+            t = x[int(l / 2) :]
+            s = torch.from_numpy(s).to(dtype=dtype).to(device)
+            t = torch.from_numpy(t).to(dtype=dtype).to(device)
+
+            transformed_arrays = input_images * s.view((-1, 1, 1)) + t.view((-1, 1, 1))
+            dists = inter_distances(transformed_arrays)
+            sqrt_dist = torch.sqrt(torch.mean(dists**2))
+
+            if "mean" == reduction:
+                pred = torch.mean(transformed_arrays, dim=0)
+            elif "median" == reduction:
+                pred = torch.median(transformed_arrays, dim=0).values
+            else:
+                raise ValueError
+
+            near_err = torch.sqrt((0 - torch.min(pred)) ** 2)
+            far_err = torch.sqrt((1 - torch.max(pred)) ** 2)
+
+            err = sqrt_dist + (near_err + far_err) * regularizer_strength
+            err = err.detach().cpu().numpy().astype(np_dtype)
+            return err
+
+        res = minimize(
+            closure,
+            x,
+            method="BFGS",
+            tol=tol,
+            options={"maxiter": max_iter, "disp": False},
+        )
+        x = res.x
+        l = len(x)
+        s = x[: int(l / 2)]
+        t = x[int(l / 2) :]
+
+        # Prediction
+        s = torch.from_numpy(s).to(dtype=dtype).to(device)
+        t = torch.from_numpy(t).to(dtype=dtype).to(device)
+        transformed_arrays = original_input * s.view(-1, 1, 1) + t.view(-1, 1, 1)
+        if "mean" == reduction:
+            aligned_images = torch.mean(transformed_arrays, dim=0)
+            std = torch.std(transformed_arrays, dim=0)
+            uncertainty = std
+        elif "median" == reduction:
+            aligned_images = torch.median(transformed_arrays, dim=0).values
+            # MAD (median absolute deviation) as uncertainty indicator
+            abs_dev = torch.abs(transformed_arrays - aligned_images)
+            mad = torch.median(abs_dev, dim=0).values
+            uncertainty = mad
+        else:
+            raise ValueError(f"Unknown reduction method: {reduction}")
+
+        # Scale and shift to [0, 1]
+        _min = torch.min(aligned_images)
+        _max = torch.max(aligned_images)
+        aligned_images = (aligned_images - _min) / (_max - _min)
+        uncertainty /= _max - _min
+
+        return aligned_images, uncertainty

examples/community/regional_prompting_stable_diffusion.py

@@ -73,7 +73,14 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
         requires_safety_checker: bool = True,
     ):
         super().__init__(
-            vae, text_encoder, tokenizer, unet, scheduler, safety_checker, feature_extractor, requires_safety_checker
+            vae,
+            text_encoder,
+            tokenizer,
+            unet,
+            scheduler,
+            safety_checker,
+            feature_extractor,
+            requires_safety_checker,
         )
         self.register_modules(
             vae=vae,
@@ -102,22 +109,22 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
         return_dict: bool = True,
         rp_args: Dict[str, str] = None,
     ):
-        active = KBRK in prompt[0] if type(prompt) == list else KBRK in prompt  # noqa: E721
+        active = KBRK in prompt[0] if isinstance(prompt, list) else KBRK in prompt
         if negative_prompt is None:
-            negative_prompt = "" if type(prompt) == str else [""] * len(prompt)  # noqa: E721
+            negative_prompt = "" if isinstance(prompt, str) else [""] * len(prompt)
 
         device = self._execution_device
         regions = 0
 
         self.power = int(rp_args["power"]) if "power" in rp_args else 1
 
-        prompts = prompt if type(prompt) == list else [prompt]  # noqa: E721
-        n_prompts = negative_prompt if type(negative_prompt) == list else [negative_prompt]  # noqa: E721
+        prompts = prompt if isinstance(prompt, list) else [prompt]
+        n_prompts = negative_prompt if isinstance(prompt, str) else [negative_prompt]
         self.batch = batch = num_images_per_prompt * len(prompts)
         all_prompts_cn, all_prompts_p = promptsmaker(prompts, num_images_per_prompt)
         all_n_prompts_cn, _ = promptsmaker(n_prompts, num_images_per_prompt)
 
-        cn = len(all_prompts_cn) == len(all_n_prompts_cn)
+        equal = len(all_prompts_cn) == len(all_n_prompts_cn)
 
         if Compel:
             compel = Compel(tokenizer=self.tokenizer, text_encoder=self.text_encoder)
@@ -129,7 +136,7 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
                 return torch.cat(embl)
 
             conds = getcompelembs(all_prompts_cn)
-            unconds = getcompelembs(all_n_prompts_cn) if cn else getcompelembs(n_prompts)
+            unconds = getcompelembs(all_n_prompts_cn)
             embs = getcompelembs(prompts)
             n_embs = getcompelembs(n_prompts)
             prompt = negative_prompt = None
@@ -137,7 +144,7 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
             conds = self.encode_prompt(prompts, device, 1, True)[0]
             unconds = (
                 self.encode_prompt(n_prompts, device, 1, True)[0]
-                if cn
+                if equal
                 else self.encode_prompt(all_n_prompts_cn, device, 1, True)[0]
             )
             embs = n_embs = None
@@ -206,8 +213,11 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
                     else:
                         px, nx = hidden_states.chunk(2)
 
-                    if cn:
-                        hidden_states = torch.cat([px for i in range(regions)] + [nx for i in range(regions)], 0)
+                    if equal:
+                        hidden_states = torch.cat(
+                            [px for i in range(regions)] + [nx for i in range(regions)],
+                            0,
+                        )
                         encoder_hidden_states = torch.cat([conds] + [unconds])
                     else:
                         hidden_states = torch.cat([px for i in range(regions)] + [nx], 0)
@@ -289,9 +299,9 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
                     if any(x in mode for x in ["COL", "ROW"]):
                         reshaped = hidden_states.reshape(hidden_states.size()[0], h, w, hidden_states.size()[2])
                         center = reshaped.shape[0] // 2
-                        px = reshaped[0:center] if cn else reshaped[0:-batch]
-                        nx = reshaped[center:] if cn else reshaped[-batch:]
-                        outs = [px, nx] if cn else [px]
+                        px = reshaped[0:center] if equal else reshaped[0:-batch]
+                        nx = reshaped[center:] if equal else reshaped[-batch:]
+                        outs = [px, nx] if equal else [px]
                         for out in outs:
                             c = 0
                             for i, ocell in enumerate(ocells):
@@ -321,15 +331,16 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
                                             :,
                                         ]
                                     c += 1
-                        px, nx = (px[0:batch], nx[0:batch]) if cn else (px[0:batch], nx)
+                        px, nx = (px[0:batch], nx[0:batch]) if equal else (px[0:batch], nx)
                         hidden_states = torch.cat([nx, px], 0) if revers else torch.cat([px, nx], 0)
                         hidden_states = hidden_states.reshape(xshape)
 
                     #### Regional Prompting Prompt mode
                     elif "PRO" in mode:
-                        center = reshaped.shape[0] // 2
-                        px = reshaped[0:center] if cn else reshaped[0:-batch]
-                        nx = reshaped[center:] if cn else reshaped[-batch:]
+                        px, nx = (
+                            torch.chunk(hidden_states) if equal else hidden_states[0:-batch],
+                            hidden_states[-batch:],
+                        )
 
                         if (h, w) in self.attnmasks and self.maskready:
 
@@ -340,8 +351,8 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
                                         out[b] = out[b] + out[r * batch + b]
                                 return out
 
-                            px, nx = (mask(px), mask(nx)) if cn else (mask(px), nx)
-                        px, nx = (px[0:batch], nx[0:batch]) if cn else (px[0:batch], nx)
+                            px, nx = (mask(px), mask(nx)) if equal else (mask(px), nx)
+                        px, nx = (px[0:batch], nx[0:batch]) if equal else (px[0:batch], nx)
                         hidden_states = torch.cat([nx, px], 0) if revers else torch.cat([px, nx], 0)
                     return hidden_states
 
@@ -378,7 +389,15 @@ class RegionalPromptingStableDiffusionPipeline(StableDiffusionPipeline):
             save_mask = False
 
         if mode == "PROMPT" and save_mask:
-            saveattnmaps(self, output, height, width, thresholds, num_inference_steps // 2, regions)
+            saveattnmaps(
+                self,
+                output,
+                height,
+                width,
+                thresholds,
+                num_inference_steps // 2,
+                regions,
+            )
 
         return output
 
@@ -437,7 +456,11 @@ def make_cells(ratios):
 def make_emblist(self, prompts):
     with torch.no_grad():
         tokens = self.tokenizer(
-            prompts, max_length=self.tokenizer.model_max_length, padding=True, truncation=True, return_tensors="pt"
+            prompts,
+            max_length=self.tokenizer.model_max_length,
+            padding=True,
+            truncation=True,
+            return_tensors="pt",
         ).input_ids.to(self.device)
         embs = self.text_encoder(tokens, output_hidden_states=True).last_hidden_state.to(self.device, dtype=self.dtype)
     return embs
@@ -563,7 +586,15 @@ def tokendealer(self, all_prompts):
 
 
 def scaled_dot_product_attention(
-    self, query, key, value, attn_mask=None, dropout_p=0.0, is_causal=False, scale=None, getattn=False
+    self,
+    query,
+    key,
+    value,
+    attn_mask=None,
+    dropout_p=0.0,
+    is_causal=False,
+    scale=None,
+    getattn=False,
 ) -> torch.Tensor:
     # Efficient implementation equivalent to the following:
     L, S = query.size(-2), key.size(-2)

examples/community/stable_diffusion_tensorrt_img2img.py

@@ -1004,7 +1004,7 @@ class TensorRTStableDiffusionImg2ImgPipeline(StableDiffusionImg2ImgPipeline):
         """
         self.generator = generator
         self.denoising_steps = num_inference_steps
-        self.guidance_scale = guidance_scale
+        self._guidance_scale = guidance_scale
 
         # Pre-compute latent input scales and linear multistep coefficients
         self.scheduler.set_timesteps(self.denoising_steps, device=self.torch_device)

examples/consistency_distillation/README.md

@@ -94,7 +94,7 @@ accelerate launch train_lcm_distill_lora_sd_wds.py \
     --mixed_precision=fp16 \
     --resolution=512 \
     --lora_rank=64 \
-    --learning_rate=1e-6 --loss_type="huber" --adam_weight_decay=0.0 \
+    --learning_rate=1e-4 --loss_type="huber" --adam_weight_decay=0.0 \
     --max_train_steps=1000 \
     --max_train_samples=4000000 \
     --dataloader_num_workers=8 \

examples/consistency_distillation/README_sdxl.md

@@ -96,7 +96,7 @@ accelerate launch train_lcm_distill_lora_sdxl_wds.py \
     --mixed_precision=fp16 \
     --resolution=1024 \
     --lora_rank=64 \
-    --learning_rate=1e-6 --loss_type="huber" --use_fix_crop_and_size --adam_weight_decay=0.0 \
+    --learning_rate=1e-4 --loss_type="huber" --use_fix_crop_and_size --adam_weight_decay=0.0 \
     --max_train_steps=1000 \
     --max_train_samples=4000000 \
     --dataloader_num_workers=8 \

examples/controlnet/test_controlnet.py

@@ -65,7 +65,7 @@ class ControlNet(ExamplesTestsAccelerate):
             --train_batch_size=1
             --gradient_accumulation_steps=1
             --controlnet_model_name_or_path=hf-internal-testing/tiny-controlnet
-            --max_train_steps=9
+            --max_train_steps=6
             --checkpointing_steps=2
             """.split()
 
@@ -73,7 +73,7 @@ class ControlNet(ExamplesTestsAccelerate):
 
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-2", "checkpoint-4", "checkpoint-6", "checkpoint-8"},
+                {"checkpoint-2", "checkpoint-4", "checkpoint-6"},
             )
 
             resume_run_args = f"""
@@ -85,18 +85,15 @@ class ControlNet(ExamplesTestsAccelerate):
             --train_batch_size=1
             --gradient_accumulation_steps=1
             --controlnet_model_name_or_path=hf-internal-testing/tiny-controlnet
-            --max_train_steps=11
+            --max_train_steps=8
             --checkpointing_steps=2
-            --resume_from_checkpoint=checkpoint-8
-            --checkpoints_total_limit=3
+            --resume_from_checkpoint=checkpoint-6
+            --checkpoints_total_limit=2
             """.split()
 
             run_command(self._launch_args + resume_run_args)
 
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-8", "checkpoint-10", "checkpoint-12"},
-            )
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-6", "checkpoint-8"})
 
 
 class ControlNetSDXL(ExamplesTestsAccelerate):
@@ -111,7 +108,7 @@ class ControlNetSDXL(ExamplesTestsAccelerate):
             --train_batch_size=1
             --gradient_accumulation_steps=1
             --controlnet_model_name_or_path=hf-internal-testing/tiny-controlnet-sdxl
-            --max_train_steps=9
+            --max_train_steps=4
             --checkpointing_steps=2
             """.split()
 

examples/custom_diffusion/test_custom_diffusion.py

@@ -76,10 +76,7 @@ class CustomDiffusion(ExamplesTestsAccelerate):
 
             run_command(self._launch_args + test_args)
 
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-4", "checkpoint-6"},
-            )
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-4", "checkpoint-6"})
 
     def test_custom_diffusion_checkpointing_checkpoints_total_limit_removes_multiple_checkpoints(self):
         with tempfile.TemporaryDirectory() as tmpdir:
@@ -93,7 +90,7 @@ class CustomDiffusion(ExamplesTestsAccelerate):
             --train_batch_size=1
             --modifier_token=<new1>
             --dataloader_num_workers=0
-            --max_train_steps=9
+            --max_train_steps=4
             --checkpointing_steps=2
             --no_safe_serialization
             """.split()
@@ -102,7 +99,7 @@ class CustomDiffusion(ExamplesTestsAccelerate):
 
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-2", "checkpoint-4", "checkpoint-6", "checkpoint-8"},
+                {"checkpoint-2", "checkpoint-4"},
             )
 
             resume_run_args = f"""
@@ -115,16 +112,13 @@ class CustomDiffusion(ExamplesTestsAccelerate):
             --train_batch_size=1
             --modifier_token=<new1>
             --dataloader_num_workers=0
-            --max_train_steps=11
+            --max_train_steps=8
             --checkpointing_steps=2
-            --resume_from_checkpoint=checkpoint-8
-            --checkpoints_total_limit=3
+            --resume_from_checkpoint=checkpoint-4
+            --checkpoints_total_limit=2
             --no_safe_serialization
             """.split()
 
             run_command(self._launch_args + resume_run_args)
 
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-6", "checkpoint-8", "checkpoint-10"},
-            )
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-6", "checkpoint-8"})

examples/dreambooth/test_dreambooth.py

@@ -89,7 +89,7 @@ class DreamBooth(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 5, checkpointing_steps == 2
+            # max_train_steps == 4, checkpointing_steps == 2
             # Should create checkpoints at steps 2, 4
 
             initial_run_args = f"""
@@ -100,7 +100,7 @@ class DreamBooth(ExamplesTestsAccelerate):
                 --resolution 64
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 5
+                --max_train_steps 4
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -114,7 +114,7 @@ class DreamBooth(ExamplesTestsAccelerate):
 
             # check can run the original fully trained output pipeline
             pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
-            pipe(instance_prompt, num_inference_steps=2)
+            pipe(instance_prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
             self.assertTrue(os.path.isdir(os.path.join(tmpdir, "checkpoint-2")))
@@ -123,7 +123,7 @@ class DreamBooth(ExamplesTestsAccelerate):
             # check can run an intermediate checkpoint
             unet = UNet2DConditionModel.from_pretrained(tmpdir, subfolder="checkpoint-2/unet")
             pipe = DiffusionPipeline.from_pretrained(pretrained_model_name_or_path, unet=unet, safety_checker=None)
-            pipe(instance_prompt, num_inference_steps=2)
+            pipe(instance_prompt, num_inference_steps=1)
 
             # Remove checkpoint 2 so that we can check only later checkpoints exist after resuming
             shutil.rmtree(os.path.join(tmpdir, "checkpoint-2"))
@@ -138,7 +138,7 @@ class DreamBooth(ExamplesTestsAccelerate):
                 --resolution 64
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 7
+                --max_train_steps 6
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -153,7 +153,7 @@ class DreamBooth(ExamplesTestsAccelerate):
 
             # check can run new fully trained pipeline
             pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
-            pipe(instance_prompt, num_inference_steps=2)
+            pipe(instance_prompt, num_inference_steps=1)
 
             # check old checkpoints do not exist
             self.assertFalse(os.path.isdir(os.path.join(tmpdir, "checkpoint-2")))
@@ -196,7 +196,7 @@ class DreamBooth(ExamplesTestsAccelerate):
             --resolution=64
             --train_batch_size=1
             --gradient_accumulation_steps=1
-            --max_train_steps=9
+            --max_train_steps=4
             --checkpointing_steps=2
             """.split()
 
@@ -204,7 +204,7 @@ class DreamBooth(ExamplesTestsAccelerate):
 
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-2", "checkpoint-4", "checkpoint-6", "checkpoint-8"},
+                {"checkpoint-2", "checkpoint-4"},
             )
 
             resume_run_args = f"""
@@ -216,15 +216,12 @@ class DreamBooth(ExamplesTestsAccelerate):
             --resolution=64
             --train_batch_size=1
             --gradient_accumulation_steps=1
-            --max_train_steps=11
+            --max_train_steps=8
             --checkpointing_steps=2
-            --resume_from_checkpoint=checkpoint-8
-            --checkpoints_total_limit=3
+            --resume_from_checkpoint=checkpoint-4
+            --checkpoints_total_limit=2
             """.split()
 
             run_command(self._launch_args + resume_run_args)
 
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-6", "checkpoint-8", "checkpoint-10"},
-            )
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-6", "checkpoint-8"})

examples/dreambooth/test_dreambooth_lora.py

@@ -135,16 +135,13 @@ class DreamBoothLoRA(ExamplesTestsAccelerate):
             --resolution=64
             --train_batch_size=1
             --gradient_accumulation_steps=1
-            --max_train_steps=9
+            --max_train_steps=4
             --checkpointing_steps=2
             """.split()
 
             run_command(self._launch_args + test_args)
 
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-2", "checkpoint-4", "checkpoint-6", "checkpoint-8"},
-            )
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-2", "checkpoint-4"})
 
             resume_run_args = f"""
             examples/dreambooth/train_dreambooth_lora.py
@@ -155,18 +152,15 @@ class DreamBoothLoRA(ExamplesTestsAccelerate):
             --resolution=64
             --train_batch_size=1
             --gradient_accumulation_steps=1
-            --max_train_steps=11
+            --max_train_steps=8
             --checkpointing_steps=2
-            --resume_from_checkpoint=checkpoint-8
-            --checkpoints_total_limit=3
+            --resume_from_checkpoint=checkpoint-4
+            --checkpoints_total_limit=2
             """.split()
 
             run_command(self._launch_args + resume_run_args)
 
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-6", "checkpoint-8", "checkpoint-10"},
-            )
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-6", "checkpoint-8"})
 
     def test_dreambooth_lora_if_model(self):
         with tempfile.TemporaryDirectory() as tmpdir:
@@ -328,7 +322,7 @@ class DreamBoothLoRASDXL(ExamplesTestsAccelerate):
                 --resolution 64
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 7
+                --max_train_steps 6
                 --checkpointing_steps=2
                 --checkpoints_total_limit=2
                 --learning_rate 5.0e-04
@@ -342,14 +336,11 @@ class DreamBoothLoRASDXL(ExamplesTestsAccelerate):
 
             pipe = DiffusionPipeline.from_pretrained(pipeline_path)
             pipe.load_lora_weights(tmpdir)
-            pipe("a prompt", num_inference_steps=2)
+            pipe("a prompt", num_inference_steps=1)
 
             # check checkpoint directories exist
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                # checkpoint-2 should have been deleted
-                {"checkpoint-4", "checkpoint-6"},
-            )
+            # checkpoint-2 should have been deleted
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-4", "checkpoint-6"})
 
     def test_dreambooth_lora_sdxl_text_encoder_checkpointing_checkpoints_total_limit(self):
         pipeline_path = "hf-internal-testing/tiny-stable-diffusion-xl-pipe"

examples/dreambooth/train_dreambooth_lora.py

@@ -827,6 +827,7 @@ def main(args):
     # now we will add new LoRA weights to the attention layers
     unet_lora_config = LoraConfig(
         r=args.rank,
+        lora_alpha=args.rank,
         init_lora_weights="gaussian",
         target_modules=["to_k", "to_q", "to_v", "to_out.0", "add_k_proj", "add_v_proj"],
     )
@@ -835,7 +836,10 @@ def main(args):
     # The text encoder comes from 🤗 transformers, we will also attach adapters to it.
     if args.train_text_encoder:
         text_lora_config = LoraConfig(
-            r=args.rank, init_lora_weights="gaussian", target_modules=["q_proj", "k_proj", "v_proj", "out_proj"]
+            r=args.rank,
+            lora_alpha=args.rank,
+            init_lora_weights="gaussian",
+            target_modules=["q_proj", "k_proj", "v_proj", "out_proj"],
         )
         text_encoder.add_adapter(text_lora_config)
 

examples/dreambooth/train_dreambooth_lora_sdxl.py

@@ -978,7 +978,10 @@ def main(args):
 
     # now we will add new LoRA weights to the attention layers
     unet_lora_config = LoraConfig(
-        r=args.rank, init_lora_weights="gaussian", target_modules=["to_k", "to_q", "to_v", "to_out.0"]
+        r=args.rank,
+        lora_alpha=args.rank,
+        init_lora_weights="gaussian",
+        target_modules=["to_k", "to_q", "to_v", "to_out.0"],
     )
     unet.add_adapter(unet_lora_config)
 
@@ -986,11 +989,25 @@ def main(args):
     # So, instead, we monkey-patch the forward calls of its attention-blocks.
     if args.train_text_encoder:
         text_lora_config = LoraConfig(
-            r=args.rank, init_lora_weights="gaussian", target_modules=["q_proj", "k_proj", "v_proj", "out_proj"]
+            r=args.rank,
+            lora_alpha=args.rank,
+            init_lora_weights="gaussian",
+            target_modules=["q_proj", "k_proj", "v_proj", "out_proj"],
         )
         text_encoder_one.add_adapter(text_lora_config)
         text_encoder_two.add_adapter(text_lora_config)
 
+    # Make sure the trainable params are in float32.
+    if args.mixed_precision == "fp16":
+        models = [unet]
+        if args.train_text_encoder:
+            models.extend([text_encoder_one, text_encoder_two])
+        for model in models:
+            for param in model.parameters():
+                # only upcast trainable parameters (LoRA) into fp32
+                if param.requires_grad:
+                    param.data = param.to(torch.float32)
+
     # create custom saving & loading hooks so that `accelerator.save_state(...)` serializes in a nice format
     def save_model_hook(models, weights, output_dir):
         if accelerator.is_main_process:
@@ -1133,10 +1150,26 @@ def main(args):
 
         optimizer_class = prodigyopt.Prodigy
 
+        if args.learning_rate <= 0.1:
+            logger.warn(
+                "Learning rate is too low. When using prodigy, it's generally better to set learning rate around 1.0"
+            )
+        if args.train_text_encoder and args.text_encoder_lr:
+            logger.warn(
+                f"Learning rates were provided both for the unet and the text encoder- e.g. text_encoder_lr:"
+                f" {args.text_encoder_lr} and learning_rate: {args.learning_rate}. "
+                f"When using prodigy only learning_rate is used as the initial learning rate."
+            )
+            # changes the learning rate of text_encoder_parameters_one and text_encoder_parameters_two to be
+            # --learning_rate
+            params_to_optimize[1]["lr"] = args.learning_rate
+            params_to_optimize[2]["lr"] = args.learning_rate
+
         optimizer = optimizer_class(
             params_to_optimize,
             lr=args.learning_rate,
             betas=(args.adam_beta1, args.adam_beta2),
+            beta3=args.prodigy_beta3,
             weight_decay=args.adam_weight_decay,
             eps=args.adam_epsilon,
             decouple=args.prodigy_decouple,

examples/instruct_pix2pix/test_instruct_pix2pix.py

@@ -40,7 +40,7 @@ class InstructPix2Pix(ExamplesTestsAccelerate):
                 --resolution=64
                 --random_flip
                 --train_batch_size=1
-                --max_train_steps=7
+                --max_train_steps=6
                 --checkpointing_steps=2
                 --checkpoints_total_limit=2
                 --output_dir {tmpdir}
@@ -63,7 +63,7 @@ class InstructPix2Pix(ExamplesTestsAccelerate):
                 --resolution=64
                 --random_flip
                 --train_batch_size=1
-                --max_train_steps=9
+                --max_train_steps=4
                 --checkpointing_steps=2
                 --output_dir {tmpdir}
                 --seed=0
@@ -74,7 +74,7 @@ class InstructPix2Pix(ExamplesTestsAccelerate):
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-2", "checkpoint-4", "checkpoint-6", "checkpoint-8"},
+                {"checkpoint-2", "checkpoint-4"},
             )
 
             resume_run_args = f"""
@@ -84,12 +84,12 @@ class InstructPix2Pix(ExamplesTestsAccelerate):
                 --resolution=64
                 --random_flip
                 --train_batch_size=1
-                --max_train_steps=11
+                --max_train_steps=8
                 --checkpointing_steps=2
                 --output_dir {tmpdir}
                 --seed=0
-                --resume_from_checkpoint=checkpoint-8
-                --checkpoints_total_limit=3
+                --resume_from_checkpoint=checkpoint-4
+                --checkpoints_total_limit=2
                 """.split()
 
             run_command(self._launch_args + resume_run_args)
@@ -97,5 +97,5 @@ class InstructPix2Pix(ExamplesTestsAccelerate):
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-6", "checkpoint-8", "checkpoint-10"},
+                {"checkpoint-6", "checkpoint-8"},
             )

examples/research_projects/realfill/requirements.txt

@@ -1,6 +1,6 @@
 diffusers==0.20.1
 accelerate==0.23.0
-transformers==4.34.0
+transformers==4.36.0
 peft==0.5.0
 torch==2.0.1
 torchvision>=0.16

examples/text_to_image/test_text_to_image.py

@@ -64,7 +64,7 @@ class TextToImage(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 5, checkpointing_steps == 2
+            # max_train_steps == 4, checkpointing_steps == 2
             # Should create checkpoints at steps 2, 4
 
             initial_run_args = f"""
@@ -76,7 +76,7 @@ class TextToImage(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 5
+                --max_train_steps 4
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -89,7 +89,7 @@ class TextToImage(ExamplesTestsAccelerate):
             run_command(self._launch_args + initial_run_args)
 
             pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
             self.assertEqual(
@@ -100,12 +100,12 @@ class TextToImage(ExamplesTestsAccelerate):
             # check can run an intermediate checkpoint
             unet = UNet2DConditionModel.from_pretrained(tmpdir, subfolder="checkpoint-2/unet")
             pipe = DiffusionPipeline.from_pretrained(pretrained_model_name_or_path, unet=unet, safety_checker=None)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # Remove checkpoint 2 so that we can check only later checkpoints exist after resuming
             shutil.rmtree(os.path.join(tmpdir, "checkpoint-2"))
 
-            # Run training script for 7 total steps resuming from checkpoint 4
+            # Run training script for 2 total steps resuming from checkpoint 4
 
             resume_run_args = f"""
                 examples/text_to_image/train_text_to_image.py
@@ -116,13 +116,13 @@ class TextToImage(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 7
+                --max_train_steps 2
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
                 --lr_warmup_steps 0
                 --output_dir {tmpdir}
-                --checkpointing_steps=2
+                --checkpointing_steps=1
                 --resume_from_checkpoint=checkpoint-4
                 --seed=0
                 """.split()
@@ -131,16 +131,13 @@ class TextToImage(ExamplesTestsAccelerate):
 
             # check can run new fully trained pipeline
             pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
+            # no checkpoint-2 -> check old checkpoints do not exist
+            # check new checkpoints exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {
-                    # no checkpoint-2 -> check old checkpoints do not exist
-                    # check new checkpoints exist
-                    "checkpoint-4",
-                    "checkpoint-6",
-                },
+                {"checkpoint-4", "checkpoint-5"},
             )
 
     def test_text_to_image_checkpointing_use_ema(self):
@@ -149,7 +146,7 @@ class TextToImage(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 5, checkpointing_steps == 2
+            # max_train_steps == 4, checkpointing_steps == 2
             # Should create checkpoints at steps 2, 4
 
             initial_run_args = f"""
@@ -161,7 +158,7 @@ class TextToImage(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 5
+                --max_train_steps 4
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -186,12 +183,12 @@ class TextToImage(ExamplesTestsAccelerate):
             # check can run an intermediate checkpoint
             unet = UNet2DConditionModel.from_pretrained(tmpdir, subfolder="checkpoint-2/unet")
             pipe = DiffusionPipeline.from_pretrained(pretrained_model_name_or_path, unet=unet, safety_checker=None)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # Remove checkpoint 2 so that we can check only later checkpoints exist after resuming
             shutil.rmtree(os.path.join(tmpdir, "checkpoint-2"))
 
-            # Run training script for 7 total steps resuming from checkpoint 4
+            # Run training script for 2 total steps resuming from checkpoint 4
 
             resume_run_args = f"""
                 examples/text_to_image/train_text_to_image.py
@@ -202,13 +199,13 @@ class TextToImage(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 7
+                --max_train_steps 2
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
                 --lr_warmup_steps 0
                 --output_dir {tmpdir}
-                --checkpointing_steps=2
+                --checkpointing_steps=1
                 --resume_from_checkpoint=checkpoint-4
                 --use_ema
                 --seed=0
@@ -218,16 +215,13 @@ class TextToImage(ExamplesTestsAccelerate):
 
             # check can run new fully trained pipeline
             pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
+            # no checkpoint-2 -> check old checkpoints do not exist
+            # check new checkpoints exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {
-                    # no checkpoint-2 -> check old checkpoints do not exist
-                    # check new checkpoints exist
-                    "checkpoint-4",
-                    "checkpoint-6",
-                },
+                {"checkpoint-4", "checkpoint-5"},
             )
 
     def test_text_to_image_checkpointing_checkpoints_total_limit(self):
@@ -236,7 +230,7 @@ class TextToImage(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 7, checkpointing_steps == 2, checkpoints_total_limit == 2
+            # max_train_steps == 6, checkpointing_steps == 2, checkpoints_total_limit == 2
             # Should create checkpoints at steps 2, 4, 6
             # with checkpoint at step 2 deleted
 
@@ -249,7 +243,7 @@ class TextToImage(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 7
+                --max_train_steps 6
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -263,14 +257,11 @@ class TextToImage(ExamplesTestsAccelerate):
             run_command(self._launch_args + initial_run_args)
 
             pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                # checkpoint-2 should have been deleted
-                {"checkpoint-4", "checkpoint-6"},
-            )
+            # checkpoint-2 should have been deleted
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-4", "checkpoint-6"})
 
     def test_text_to_image_checkpointing_checkpoints_total_limit_removes_multiple_checkpoints(self):
         pretrained_model_name_or_path = "hf-internal-testing/tiny-stable-diffusion-pipe"
@@ -278,8 +269,8 @@ class TextToImage(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 9, checkpointing_steps == 2
-            # Should create checkpoints at steps 2, 4, 6, 8
+            # max_train_steps == 4, checkpointing_steps == 2
+            # Should create checkpoints at steps 2, 4
 
             initial_run_args = f"""
                 examples/text_to_image/train_text_to_image.py
@@ -290,7 +281,7 @@ class TextToImage(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 9
+                --max_train_steps 4
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -303,15 +294,15 @@ class TextToImage(ExamplesTestsAccelerate):
             run_command(self._launch_args + initial_run_args)
 
             pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-2", "checkpoint-4", "checkpoint-6", "checkpoint-8"},
+                {"checkpoint-2", "checkpoint-4"},
             )
 
-            # resume and we should try to checkpoint at 10, where we'll have to remove
+            # resume and we should try to checkpoint at 6, where we'll have to remove
             # checkpoint-2 and checkpoint-4 instead of just a single previous checkpoint
 
             resume_run_args = f"""
@@ -323,27 +314,27 @@ class TextToImage(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 11
+                --max_train_steps 8
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
                 --lr_warmup_steps 0
                 --output_dir {tmpdir}
                 --checkpointing_steps=2
-                --resume_from_checkpoint=checkpoint-8
-                --checkpoints_total_limit=3
+                --resume_from_checkpoint=checkpoint-4
+                --checkpoints_total_limit=2
                 --seed=0
                 """.split()
 
             run_command(self._launch_args + resume_run_args)
 
             pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-6", "checkpoint-8", "checkpoint-10"},
+                {"checkpoint-6", "checkpoint-8"},
             )
 
 

examples/text_to_image/test_text_to_image_lora.py

@@ -41,7 +41,7 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 7, checkpointing_steps == 2, checkpoints_total_limit == 2
+            # max_train_steps == 6, checkpointing_steps == 2, checkpoints_total_limit == 2
             # Should create checkpoints at steps 2, 4, 6
             # with checkpoint at step 2 deleted
 
@@ -52,7 +52,7 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
                 --resolution 64
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 7
+                --max_train_steps 6
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -66,14 +66,11 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
 
             pipe = DiffusionPipeline.from_pretrained(pipeline_path)
             pipe.load_lora_weights(tmpdir)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                # checkpoint-2 should have been deleted
-                {"checkpoint-4", "checkpoint-6"},
-            )
+            # checkpoint-2 should have been deleted
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-4", "checkpoint-6"})
 
     def test_text_to_image_lora_checkpointing_checkpoints_total_limit(self):
         pretrained_model_name_or_path = "hf-internal-testing/tiny-stable-diffusion-pipe"
@@ -81,7 +78,7 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 7, checkpointing_steps == 2, checkpoints_total_limit == 2
+            # max_train_steps == 6, checkpointing_steps == 2, checkpoints_total_limit == 2
             # Should create checkpoints at steps 2, 4, 6
             # with checkpoint at step 2 deleted
 
@@ -94,7 +91,7 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 7
+                --max_train_steps 6
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -112,14 +109,11 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
                 "hf-internal-testing/tiny-stable-diffusion-pipe", safety_checker=None
             )
             pipe.load_lora_weights(tmpdir)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                # checkpoint-2 should have been deleted
-                {"checkpoint-4", "checkpoint-6"},
-            )
+            # checkpoint-2 should have been deleted
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-4", "checkpoint-6"})
 
     def test_text_to_image_lora_checkpointing_checkpoints_total_limit_removes_multiple_checkpoints(self):
         pretrained_model_name_or_path = "hf-internal-testing/tiny-stable-diffusion-pipe"
@@ -127,8 +121,8 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 9, checkpointing_steps == 2
-            # Should create checkpoints at steps 2, 4, 6, 8
+            # max_train_steps == 4, checkpointing_steps == 2
+            # Should create checkpoints at steps 2, 4
 
             initial_run_args = f"""
                 examples/text_to_image/train_text_to_image_lora.py
@@ -139,7 +133,7 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 9
+                --max_train_steps 4
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -156,15 +150,15 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
                 "hf-internal-testing/tiny-stable-diffusion-pipe", safety_checker=None
             )
             pipe.load_lora_weights(tmpdir)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-2", "checkpoint-4", "checkpoint-6", "checkpoint-8"},
+                {"checkpoint-2", "checkpoint-4"},
             )
 
-            # resume and we should try to checkpoint at 10, where we'll have to remove
+            # resume and we should try to checkpoint at 6, where we'll have to remove
             # checkpoint-2 and checkpoint-4 instead of just a single previous checkpoint
 
             resume_run_args = f"""
@@ -176,15 +170,15 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
                 --random_flip
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 11
+                --max_train_steps 8
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
                 --lr_warmup_steps 0
                 --output_dir {tmpdir}
                 --checkpointing_steps=2
-                --resume_from_checkpoint=checkpoint-8
-                --checkpoints_total_limit=3
+                --resume_from_checkpoint=checkpoint-4
+                --checkpoints_total_limit=2
                 --seed=0
                 --num_validation_images=0
                 """.split()
@@ -195,12 +189,12 @@ class TextToImageLoRA(ExamplesTestsAccelerate):
                 "hf-internal-testing/tiny-stable-diffusion-pipe", safety_checker=None
             )
             pipe.load_lora_weights(tmpdir)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-6", "checkpoint-8", "checkpoint-10"},
+                {"checkpoint-6", "checkpoint-8"},
             )
 
 
@@ -272,7 +266,7 @@ class TextToImageLoRASDXL(ExamplesTestsAccelerate):
 
         with tempfile.TemporaryDirectory() as tmpdir:
             # Run training script with checkpointing
-            # max_train_steps == 7, checkpointing_steps == 2, checkpoints_total_limit == 2
+            # max_train_steps == 6, checkpointing_steps == 2, checkpoints_total_limit == 2
             # Should create checkpoints at steps 2, 4, 6
             # with checkpoint at step 2 deleted
 
@@ -283,7 +277,7 @@ class TextToImageLoRASDXL(ExamplesTestsAccelerate):
                 --resolution 64
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 7
+                --max_train_steps 6
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -298,11 +292,8 @@ class TextToImageLoRASDXL(ExamplesTestsAccelerate):
 
             pipe = DiffusionPipeline.from_pretrained(pipeline_path)
             pipe.load_lora_weights(tmpdir)
-            pipe(prompt, num_inference_steps=2)
+            pipe(prompt, num_inference_steps=1)
 
             # check checkpoint directories exist
-            self.assertEqual(
-                {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                # checkpoint-2 should have been deleted
-                {"checkpoint-4", "checkpoint-6"},
-            )
+            # checkpoint-2 should have been deleted
+            self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-4", "checkpoint-6"})

examples/text_to_image/train_text_to_image_lora.py

@@ -452,7 +452,10 @@ def main():
         param.requires_grad_(False)
 
     unet_lora_config = LoraConfig(
-        r=args.rank, init_lora_weights="gaussian", target_modules=["to_k", "to_q", "to_v", "to_out.0"]
+        r=args.rank,
+        lora_alpha=args.rank,
+        init_lora_weights="gaussian",
+        target_modules=["to_k", "to_q", "to_v", "to_out.0"],
     )
 
     # Move unet, vae and text_encoder to device and cast to weight_dtype
@@ -460,7 +463,13 @@ def main():
     vae.to(accelerator.device, dtype=weight_dtype)
     text_encoder.to(accelerator.device, dtype=weight_dtype)
 
+    # Add adapter and make sure the trainable params are in float32.
     unet.add_adapter(unet_lora_config)
+    if args.mixed_precision == "fp16":
+        for param in unet.parameters():
+            # only upcast trainable parameters (LoRA) into fp32
+            if param.requires_grad:
+                param.data = param.to(torch.float32)
 
     if args.enable_xformers_memory_efficient_attention:
         if is_xformers_available():
@@ -838,10 +847,11 @@ def main():
                 if args.seed is not None:
                     generator = generator.manual_seed(args.seed)
                 images = []
-                for _ in range(args.num_validation_images):
-                    images.append(
-                        pipeline(args.validation_prompt, num_inference_steps=30, generator=generator).images[0]
-                    )
+                with torch.cuda.amp.autocast():
+                    for _ in range(args.num_validation_images):
+                        images.append(
+                            pipeline(args.validation_prompt, num_inference_steps=30, generator=generator).images[0]
+                        )
 
                 for tracker in accelerator.trackers:
                     if tracker.name == "tensorboard":
@@ -888,40 +898,46 @@ def main():
                 ignore_patterns=["step_*", "epoch_*"],
             )
 
-    # Final inference
-    # Load previous pipeline
-    pipeline = DiffusionPipeline.from_pretrained(
-        args.pretrained_model_name_or_path, revision=args.revision, variant=args.variant, torch_dtype=weight_dtype
-    )
-    pipeline = pipeline.to(accelerator.device)
+        # Final inference
+        # Load previous pipeline
+        if args.validation_prompt is not None:
+            pipeline = DiffusionPipeline.from_pretrained(
+                args.pretrained_model_name_or_path,
+                revision=args.revision,
+                variant=args.variant,
+                torch_dtype=weight_dtype,
+            )
+            pipeline = pipeline.to(accelerator.device)
 
-    # load attention processors
-    pipeline.unet.load_attn_procs(args.output_dir)
+            # load attention processors
+            pipeline.load_lora_weights(args.output_dir)
 
-    # run inference
-    generator = torch.Generator(device=accelerator.device)
-    if args.seed is not None:
-        generator = generator.manual_seed(args.seed)
-    images = []
-    for _ in range(args.num_validation_images):
-        images.append(pipeline(args.validation_prompt, num_inference_steps=30, generator=generator).images[0])
-
-    if accelerator.is_main_process:
-        for tracker in accelerator.trackers:
-            if len(images) != 0:
-                if tracker.name == "tensorboard":
-                    np_images = np.stack([np.asarray(img) for img in images])
-                    tracker.writer.add_images("test", np_images, epoch, dataformats="NHWC")
-                if tracker.name == "wandb":
-                    tracker.log(
-                        {
-                            "test": [
-                                wandb.Image(image, caption=f"{i}: {args.validation_prompt}")
-                                for i, image in enumerate(images)
-                            ]
-                        }
+            # run inference
+            generator = torch.Generator(device=accelerator.device)
+            if args.seed is not None:
+                generator = generator.manual_seed(args.seed)
+            images = []
+            with torch.cuda.amp.autocast():
+                for _ in range(args.num_validation_images):
+                    images.append(
+                        pipeline(args.validation_prompt, num_inference_steps=30, generator=generator).images[0]
                     )
 
+            for tracker in accelerator.trackers:
+                if len(images) != 0:
+                    if tracker.name == "tensorboard":
+                        np_images = np.stack([np.asarray(img) for img in images])
+                        tracker.writer.add_images("test", np_images, epoch, dataformats="NHWC")
+                    if tracker.name == "wandb":
+                        tracker.log(
+                            {
+                                "test": [
+                                    wandb.Image(image, caption=f"{i}: {args.validation_prompt}")
+                                    for i, image in enumerate(images)
+                                ]
+                            }
+                        )
+
     accelerator.end_training()
 
 

examples/text_to_image/train_text_to_image_lora_sdxl.py

@@ -22,7 +22,6 @@ import os
 import random
 import shutil
 from pathlib import Path
-from typing import Dict
 
 import datasets
 import numpy as np
@@ -436,22 +435,6 @@ DATASET_NAME_MAPPING = {
 }
 
 
-def unet_attn_processors_state_dict(unet) -> Dict[str, torch.tensor]:
-    """
-    Returns:
-        a state dict containing just the attention processor parameters.
-    """
-    attn_processors = unet.attn_processors
-
-    attn_processors_state_dict = {}
-
-    for attn_processor_key, attn_processor in attn_processors.items():
-        for parameter_key, parameter in attn_processor.state_dict().items():
-            attn_processors_state_dict[f"{attn_processor_key}.{parameter_key}"] = parameter
-
-    return attn_processors_state_dict
-
-
 def tokenize_prompt(tokenizer, prompt):
     text_inputs = tokenizer(
         prompt,
@@ -626,7 +609,10 @@ def main(args):
     # now we will add new LoRA weights to the attention layers
     # Set correct lora layers
     unet_lora_config = LoraConfig(
-        r=args.rank, init_lora_weights="gaussian", target_modules=["to_k", "to_q", "to_v", "to_out.0"]
+        r=args.rank,
+        lora_alpha=args.rank,
+        init_lora_weights="gaussian",
+        target_modules=["to_k", "to_q", "to_v", "to_out.0"],
     )
 
     unet.add_adapter(unet_lora_config)
@@ -635,11 +621,25 @@ def main(args):
     if args.train_text_encoder:
         # ensure that dtype is float32, even if rest of the model that isn't trained is loaded in fp16
         text_lora_config = LoraConfig(
-            r=args.rank, init_lora_weights="gaussian", target_modules=["q_proj", "k_proj", "v_proj", "out_proj"]
+            r=args.rank,
+            lora_alpha=args.rank,
+            init_lora_weights="gaussian",
+            target_modules=["q_proj", "k_proj", "v_proj", "out_proj"],
         )
         text_encoder_one.add_adapter(text_lora_config)
         text_encoder_two.add_adapter(text_lora_config)
 
+    # Make sure the trainable params are in float32.
+    if args.mixed_precision == "fp16":
+        models = [unet]
+        if args.train_text_encoder:
+            models.extend([text_encoder_one, text_encoder_two])
+        for model in models:
+            for param in model.parameters():
+                # only upcast trainable parameters (LoRA) into fp32
+                if param.requires_grad:
+                    param.data = param.to(torch.float32)
+
     # create custom saving & loading hooks so that `accelerator.save_state(...)` serializes in a nice format
     def save_model_hook(models, weights, output_dir):
         if accelerator.is_main_process:
@@ -1187,6 +1187,9 @@ def main(args):
         torch.cuda.empty_cache()
 
         # Final inference
+        # Make sure vae.dtype is consistent with the unet.dtype
+        if args.mixed_precision == "fp16":
+            vae.to(weight_dtype)
         # Load previous pipeline
         pipeline = StableDiffusionXLPipeline.from_pretrained(
             args.pretrained_model_name_or_path,

examples/textual_inversion/test_textual_inversion.py

@@ -40,8 +40,6 @@ class TextualInversion(ExamplesTestsAccelerate):
                 --learnable_property object
                 --placeholder_token <cat-toy>
                 --initializer_token a
-                --validation_prompt <cat-toy>
-                --validation_steps 1
                 --save_steps 1
                 --num_vectors 2
                 --resolution 64
@@ -68,8 +66,6 @@ class TextualInversion(ExamplesTestsAccelerate):
                 --learnable_property object
                 --placeholder_token <cat-toy>
                 --initializer_token a
-                --validation_prompt <cat-toy>
-                --validation_steps 1
                 --save_steps 1
                 --num_vectors 2
                 --resolution 64
@@ -102,14 +98,12 @@ class TextualInversion(ExamplesTestsAccelerate):
                 --learnable_property object
                 --placeholder_token <cat-toy>
                 --initializer_token a
-                --validation_prompt <cat-toy>
-                --validation_steps 1
                 --save_steps 1
                 --num_vectors 2
                 --resolution 64
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 3
+                --max_train_steps 2
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
@@ -123,7 +117,7 @@ class TextualInversion(ExamplesTestsAccelerate):
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-1", "checkpoint-2", "checkpoint-3"},
+                {"checkpoint-1", "checkpoint-2"},
             )
 
             resume_run_args = f"""
@@ -133,21 +127,19 @@ class TextualInversion(ExamplesTestsAccelerate):
                 --learnable_property object
                 --placeholder_token <cat-toy>
                 --initializer_token a
-                --validation_prompt <cat-toy>
-                --validation_steps 1
                 --save_steps 1
                 --num_vectors 2
                 --resolution 64
                 --train_batch_size 1
                 --gradient_accumulation_steps 1
-                --max_train_steps 4
+                --max_train_steps 2
                 --learning_rate 5.0e-04
                 --scale_lr
                 --lr_scheduler constant
                 --lr_warmup_steps 0
                 --output_dir {tmpdir}
                 --checkpointing_steps=1
-                --resume_from_checkpoint=checkpoint-3
+                --resume_from_checkpoint=checkpoint-2
                 --checkpoints_total_limit=2
                 """.split()
 
@@ -156,5 +148,5 @@ class TextualInversion(ExamplesTestsAccelerate):
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-3", "checkpoint-4"},
+                {"checkpoint-2", "checkpoint-3"},
             )

examples/unconditional_image_generation/test_unconditional.py

@@ -90,10 +90,10 @@ class Unconditional(ExamplesTestsAccelerate):
                 --train_batch_size 1
                 --num_epochs 1
                 --gradient_accumulation_steps 1
-                --ddpm_num_inference_steps 2
+                --ddpm_num_inference_steps 1
                 --learning_rate 1e-3
                 --lr_warmup_steps 5
-                --checkpointing_steps=1
+                --checkpointing_steps=2
                 """.split()
 
             run_command(self._launch_args + initial_run_args)
@@ -101,7 +101,7 @@ class Unconditional(ExamplesTestsAccelerate):
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-1", "checkpoint-2", "checkpoint-3", "checkpoint-4", "checkpoint-5", "checkpoint-6"},
+                {"checkpoint-2", "checkpoint-4", "checkpoint-6"},
             )
 
             resume_run_args = f"""
@@ -113,12 +113,12 @@ class Unconditional(ExamplesTestsAccelerate):
                 --train_batch_size 1
                 --num_epochs 2
                 --gradient_accumulation_steps 1
-                --ddpm_num_inference_steps 2
+                --ddpm_num_inference_steps 1
                 --learning_rate 1e-3
                 --lr_warmup_steps 5
                 --resume_from_checkpoint=checkpoint-6
                 --checkpointing_steps=2
-                --checkpoints_total_limit=3
+                --checkpoints_total_limit=2
                 """.split()
 
             run_command(self._launch_args + resume_run_args)
@@ -126,5 +126,5 @@ class Unconditional(ExamplesTestsAccelerate):
             # check checkpoint directories exist
             self.assertEqual(
                 {x for x in os.listdir(tmpdir) if "checkpoint" in x},
-                {"checkpoint-8", "checkpoint-10", "checkpoint-12"},
+                {"checkpoint-10", "checkpoint-12"},
             )

scripts/convert_amused.py

@@ -0,0 +1,523 @@
+import inspect
+import os
+from argparse import ArgumentParser
+
+import numpy as np
+import torch
+from muse import MaskGiTUViT, VQGANModel
+from muse import PipelineMuse as OldPipelineMuse
+from transformers import CLIPTextModelWithProjection, CLIPTokenizer
+
+from diffusers import VQModel
+from diffusers.models.attention_processor import AttnProcessor
+from diffusers.models.uvit_2d import UVit2DModel
+from diffusers.pipelines.amused.pipeline_amused import AmusedPipeline
+from diffusers.schedulers import AmusedScheduler
+
+
+torch.backends.cuda.enable_flash_sdp(False)
+torch.backends.cuda.enable_mem_efficient_sdp(False)
+torch.backends.cuda.enable_math_sdp(True)
+
+os.environ["CUDA_LAUNCH_BLOCKING"] = "1"
+os.environ["CUBLAS_WORKSPACE_CONFIG"] = ":16:8"
+torch.use_deterministic_algorithms(True)
+
+# Enable CUDNN deterministic mode
+torch.backends.cudnn.deterministic = True
+torch.backends.cudnn.benchmark = False
+torch.backends.cuda.matmul.allow_tf32 = False
+
+device = "cuda"
+
+
+def main():
+    args = ArgumentParser()
+    args.add_argument("--model_256", action="store_true")
+    args.add_argument("--write_to", type=str, required=False, default=None)
+    args.add_argument("--transformer_path", type=str, required=False, default=None)
+    args = args.parse_args()
+
+    transformer_path = args.transformer_path
+    subfolder = "transformer"
+
+    if transformer_path is None:
+        if args.model_256:
+            transformer_path = "openMUSE/muse-256"
+        else:
+            transformer_path = (
+                "../research-run-512-checkpoints/research-run-512-with-downsample-checkpoint-554000/unwrapped_model/"
+            )
+            subfolder = None
+
+    old_transformer = MaskGiTUViT.from_pretrained(transformer_path, subfolder=subfolder)
+
+    old_transformer.to(device)
+
+    old_vae = VQGANModel.from_pretrained("openMUSE/muse-512", subfolder="vae")
+    old_vae.to(device)
+
+    vqvae = make_vqvae(old_vae)
+
+    tokenizer = CLIPTokenizer.from_pretrained("openMUSE/muse-512", subfolder="text_encoder")
+
+    text_encoder = CLIPTextModelWithProjection.from_pretrained("openMUSE/muse-512", subfolder="text_encoder")
+    text_encoder.to(device)
+
+    transformer = make_transformer(old_transformer, args.model_256)
+
+    scheduler = AmusedScheduler(mask_token_id=old_transformer.config.mask_token_id)
+
+    new_pipe = AmusedPipeline(
+        vqvae=vqvae, tokenizer=tokenizer, text_encoder=text_encoder, transformer=transformer, scheduler=scheduler
+    )
+
+    old_pipe = OldPipelineMuse(
+        vae=old_vae, transformer=old_transformer, text_encoder=text_encoder, tokenizer=tokenizer
+    )
+    old_pipe.to(device)
+
+    if args.model_256:
+        transformer_seq_len = 256
+        orig_size = (256, 256)
+    else:
+        transformer_seq_len = 1024
+        orig_size = (512, 512)
+
+    old_out = old_pipe(
+        "dog",
+        generator=torch.Generator(device).manual_seed(0),
+        transformer_seq_len=transformer_seq_len,
+        orig_size=orig_size,
+        timesteps=12,
+    )[0]
+
+    new_out = new_pipe("dog", generator=torch.Generator(device).manual_seed(0)).images[0]
+
+    old_out = np.array(old_out)
+    new_out = np.array(new_out)
+
+    diff = np.abs(old_out.astype(np.float64) - new_out.astype(np.float64))
+
+    # assert diff diff.sum() == 0
+    print("skipping pipeline full equivalence check")
+
+    print(f"max diff: {diff.max()}, diff.sum() / diff.size {diff.sum() / diff.size}")
+
+    if args.model_256:
+        assert diff.max() <= 3
+        assert diff.sum() / diff.size < 0.7
+    else:
+        assert diff.max() <= 1
+        assert diff.sum() / diff.size < 0.4
+
+    if args.write_to is not None:
+        new_pipe.save_pretrained(args.write_to)
+
+
+def make_transformer(old_transformer, model_256):
+    args = dict(old_transformer.config)
+    force_down_up_sample = args["force_down_up_sample"]
+
+    signature = inspect.signature(UVit2DModel.__init__)
+
+    args_ = {
+        "downsample": force_down_up_sample,
+        "upsample": force_down_up_sample,
+        "block_out_channels": args["block_out_channels"][0],
+        "sample_size": 16 if model_256 else 32,
+    }
+
+    for s in list(signature.parameters.keys()):
+        if s in ["self", "downsample", "upsample", "sample_size", "block_out_channels"]:
+            continue
+
+        args_[s] = args[s]
+
+    new_transformer = UVit2DModel(**args_)
+    new_transformer.to(device)
+
+    new_transformer.set_attn_processor(AttnProcessor())
+
+    state_dict = old_transformer.state_dict()
+
+    state_dict["cond_embed.linear_1.weight"] = state_dict.pop("cond_embed.0.weight")
+    state_dict["cond_embed.linear_2.weight"] = state_dict.pop("cond_embed.2.weight")
+
+    for i in range(22):
+        state_dict[f"transformer_layers.{i}.norm1.norm.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.attn_layer_norm.weight"
+        )
+        state_dict[f"transformer_layers.{i}.norm1.linear.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.self_attn_adaLN_modulation.mapper.weight"
+        )
+
+        state_dict[f"transformer_layers.{i}.attn1.to_q.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.attention.query.weight"
+        )
+        state_dict[f"transformer_layers.{i}.attn1.to_k.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.attention.key.weight"
+        )
+        state_dict[f"transformer_layers.{i}.attn1.to_v.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.attention.value.weight"
+        )
+        state_dict[f"transformer_layers.{i}.attn1.to_out.0.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.attention.out.weight"
+        )
+
+        state_dict[f"transformer_layers.{i}.norm2.norm.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.crossattn_layer_norm.weight"
+        )
+        state_dict[f"transformer_layers.{i}.norm2.linear.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.cross_attn_adaLN_modulation.mapper.weight"
+        )
+
+        state_dict[f"transformer_layers.{i}.attn2.to_q.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.crossattention.query.weight"
+        )
+        state_dict[f"transformer_layers.{i}.attn2.to_k.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.crossattention.key.weight"
+        )
+        state_dict[f"transformer_layers.{i}.attn2.to_v.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.crossattention.value.weight"
+        )
+        state_dict[f"transformer_layers.{i}.attn2.to_out.0.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.crossattention.out.weight"
+        )
+
+        state_dict[f"transformer_layers.{i}.norm3.norm.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.ffn.pre_mlp_layer_norm.weight"
+        )
+        state_dict[f"transformer_layers.{i}.norm3.linear.weight"] = state_dict.pop(
+            f"transformer_layers.{i}.ffn.adaLN_modulation.mapper.weight"
+        )
+
+        wi_0_weight = state_dict.pop(f"transformer_layers.{i}.ffn.wi_0.weight")
+        wi_1_weight = state_dict.pop(f"transformer_layers.{i}.ffn.wi_1.weight")
+        proj_weight = torch.concat([wi_1_weight, wi_0_weight], dim=0)
+        state_dict[f"transformer_layers.{i}.ff.net.0.proj.weight"] = proj_weight
+
+        state_dict[f"transformer_layers.{i}.ff.net.2.weight"] = state_dict.pop(f"transformer_layers.{i}.ffn.wo.weight")
+
+    if force_down_up_sample:
+        state_dict["down_block.downsample.norm.weight"] = state_dict.pop("down_blocks.0.downsample.0.norm.weight")
+        state_dict["down_block.downsample.conv.weight"] = state_dict.pop("down_blocks.0.downsample.1.weight")
+
+        state_dict["up_block.upsample.norm.weight"] = state_dict.pop("up_blocks.0.upsample.0.norm.weight")
+        state_dict["up_block.upsample.conv.weight"] = state_dict.pop("up_blocks.0.upsample.1.weight")
+
+    state_dict["mlm_layer.layer_norm.weight"] = state_dict.pop("mlm_layer.layer_norm.norm.weight")
+
+    for i in range(3):
+        state_dict[f"down_block.res_blocks.{i}.norm.weight"] = state_dict.pop(
+            f"down_blocks.0.res_blocks.{i}.norm.norm.weight"
+        )
+        state_dict[f"down_block.res_blocks.{i}.channelwise_linear_1.weight"] = state_dict.pop(
+            f"down_blocks.0.res_blocks.{i}.channelwise.0.weight"
+        )
+        state_dict[f"down_block.res_blocks.{i}.channelwise_norm.gamma"] = state_dict.pop(
+            f"down_blocks.0.res_blocks.{i}.channelwise.2.gamma"
+        )
+        state_dict[f"down_block.res_blocks.{i}.channelwise_norm.beta"] = state_dict.pop(
+            f"down_blocks.0.res_blocks.{i}.channelwise.2.beta"
+        )
+        state_dict[f"down_block.res_blocks.{i}.channelwise_linear_2.weight"] = state_dict.pop(
+            f"down_blocks.0.res_blocks.{i}.channelwise.4.weight"
+        )
+        state_dict[f"down_block.res_blocks.{i}.cond_embeds_mapper.weight"] = state_dict.pop(
+            f"down_blocks.0.res_blocks.{i}.adaLN_modulation.mapper.weight"
+        )
+
+        state_dict[f"down_block.attention_blocks.{i}.norm1.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.attn_layer_norm.weight"
+        )
+        state_dict[f"down_block.attention_blocks.{i}.attn1.to_q.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.attention.query.weight"
+        )
+        state_dict[f"down_block.attention_blocks.{i}.attn1.to_k.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.attention.key.weight"
+        )
+        state_dict[f"down_block.attention_blocks.{i}.attn1.to_v.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.attention.value.weight"
+        )
+        state_dict[f"down_block.attention_blocks.{i}.attn1.to_out.0.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.attention.out.weight"
+        )
+
+        state_dict[f"down_block.attention_blocks.{i}.norm2.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.crossattn_layer_norm.weight"
+        )
+        state_dict[f"down_block.attention_blocks.{i}.attn2.to_q.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.crossattention.query.weight"
+        )
+        state_dict[f"down_block.attention_blocks.{i}.attn2.to_k.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.crossattention.key.weight"
+        )
+        state_dict[f"down_block.attention_blocks.{i}.attn2.to_v.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.crossattention.value.weight"
+        )
+        state_dict[f"down_block.attention_blocks.{i}.attn2.to_out.0.weight"] = state_dict.pop(
+            f"down_blocks.0.attention_blocks.{i}.crossattention.out.weight"
+        )
+
+        state_dict[f"up_block.res_blocks.{i}.norm.weight"] = state_dict.pop(
+            f"up_blocks.0.res_blocks.{i}.norm.norm.weight"
+        )
+        state_dict[f"up_block.res_blocks.{i}.channelwise_linear_1.weight"] = state_dict.pop(
+            f"up_blocks.0.res_blocks.{i}.channelwise.0.weight"
+        )
+        state_dict[f"up_block.res_blocks.{i}.channelwise_norm.gamma"] = state_dict.pop(
+            f"up_blocks.0.res_blocks.{i}.channelwise.2.gamma"
+        )
+        state_dict[f"up_block.res_blocks.{i}.channelwise_norm.beta"] = state_dict.pop(
+            f"up_blocks.0.res_blocks.{i}.channelwise.2.beta"
+        )
+        state_dict[f"up_block.res_blocks.{i}.channelwise_linear_2.weight"] = state_dict.pop(
+            f"up_blocks.0.res_blocks.{i}.channelwise.4.weight"
+        )
+        state_dict[f"up_block.res_blocks.{i}.cond_embeds_mapper.weight"] = state_dict.pop(
+            f"up_blocks.0.res_blocks.{i}.adaLN_modulation.mapper.weight"
+        )
+
+        state_dict[f"up_block.attention_blocks.{i}.norm1.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.attn_layer_norm.weight"
+        )
+        state_dict[f"up_block.attention_blocks.{i}.attn1.to_q.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.attention.query.weight"
+        )
+        state_dict[f"up_block.attention_blocks.{i}.attn1.to_k.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.attention.key.weight"
+        )
+        state_dict[f"up_block.attention_blocks.{i}.attn1.to_v.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.attention.value.weight"
+        )
+        state_dict[f"up_block.attention_blocks.{i}.attn1.to_out.0.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.attention.out.weight"
+        )
+
+        state_dict[f"up_block.attention_blocks.{i}.norm2.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.crossattn_layer_norm.weight"
+        )
+        state_dict[f"up_block.attention_blocks.{i}.attn2.to_q.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.crossattention.query.weight"
+        )
+        state_dict[f"up_block.attention_blocks.{i}.attn2.to_k.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.crossattention.key.weight"
+        )
+        state_dict[f"up_block.attention_blocks.{i}.attn2.to_v.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.crossattention.value.weight"
+        )
+        state_dict[f"up_block.attention_blocks.{i}.attn2.to_out.0.weight"] = state_dict.pop(
+            f"up_blocks.0.attention_blocks.{i}.crossattention.out.weight"
+        )
+
+    for key in list(state_dict.keys()):
+        if key.startswith("up_blocks.0"):
+            key_ = "up_block." + ".".join(key.split(".")[2:])
+            state_dict[key_] = state_dict.pop(key)
+
+        if key.startswith("down_blocks.0"):
+            key_ = "down_block." + ".".join(key.split(".")[2:])
+            state_dict[key_] = state_dict.pop(key)
+
+    new_transformer.load_state_dict(state_dict)
+
+    input_ids = torch.randint(0, 10, (1, 32, 32), device=old_transformer.device)
+    encoder_hidden_states = torch.randn((1, 77, 768), device=old_transformer.device)
+    cond_embeds = torch.randn((1, 768), device=old_transformer.device)
+    micro_conds = torch.tensor([[512, 512, 0, 0, 6]], dtype=torch.float32, device=old_transformer.device)
+
+    old_out = old_transformer(input_ids.reshape(1, -1), encoder_hidden_states, cond_embeds, micro_conds)
+    old_out = old_out.reshape(1, 32, 32, 8192).permute(0, 3, 1, 2)
+
+    new_out = new_transformer(input_ids, encoder_hidden_states, cond_embeds, micro_conds)
+
+    # NOTE: these differences are solely due to using the geglu block that has a single linear layer of
+    # double output dimension instead of two different linear layers
+    max_diff = (old_out - new_out).abs().max()
+    total_diff = (old_out - new_out).abs().sum()
+    print(f"Transformer max_diff: {max_diff} total_diff:  {total_diff}")
+    assert max_diff < 0.01
+    assert total_diff < 1500
+
+    return new_transformer
+
+
+def make_vqvae(old_vae):
+    new_vae = VQModel(
+        act_fn="silu",
+        block_out_channels=[128, 256, 256, 512, 768],
+        down_block_types=[
+            "DownEncoderBlock2D",
+            "DownEncoderBlock2D",
+            "DownEncoderBlock2D",
+            "DownEncoderBlock2D",
+            "DownEncoderBlock2D",
+        ],
+        in_channels=3,
+        latent_channels=64,
+        layers_per_block=2,
+        norm_num_groups=32,
+        num_vq_embeddings=8192,
+        out_channels=3,
+        sample_size=32,
+        up_block_types=[
+            "UpDecoderBlock2D",
+            "UpDecoderBlock2D",
+            "UpDecoderBlock2D",
+            "UpDecoderBlock2D",
+            "UpDecoderBlock2D",
+        ],
+        mid_block_add_attention=False,
+        lookup_from_codebook=True,
+    )
+    new_vae.to(device)
+
+    # fmt: off
+
+    new_state_dict = {}
+
+    old_state_dict = old_vae.state_dict()
+
+    new_state_dict["encoder.conv_in.weight"] = old_state_dict.pop("encoder.conv_in.weight")
+    new_state_dict["encoder.conv_in.bias"]   = old_state_dict.pop("encoder.conv_in.bias")
+
+    convert_vae_block_state_dict(old_state_dict, "encoder.down.0", new_state_dict, "encoder.down_blocks.0")
+    convert_vae_block_state_dict(old_state_dict, "encoder.down.1", new_state_dict, "encoder.down_blocks.1")
+    convert_vae_block_state_dict(old_state_dict, "encoder.down.2", new_state_dict, "encoder.down_blocks.2")
+    convert_vae_block_state_dict(old_state_dict, "encoder.down.3", new_state_dict, "encoder.down_blocks.3")
+    convert_vae_block_state_dict(old_state_dict, "encoder.down.4", new_state_dict, "encoder.down_blocks.4")
+
+    new_state_dict["encoder.mid_block.resnets.0.norm1.weight"] = old_state_dict.pop("encoder.mid.block_1.norm1.weight")
+    new_state_dict["encoder.mid_block.resnets.0.norm1.bias"]   = old_state_dict.pop("encoder.mid.block_1.norm1.bias")
+    new_state_dict["encoder.mid_block.resnets.0.conv1.weight"] = old_state_dict.pop("encoder.mid.block_1.conv1.weight")
+    new_state_dict["encoder.mid_block.resnets.0.conv1.bias"]   = old_state_dict.pop("encoder.mid.block_1.conv1.bias")
+    new_state_dict["encoder.mid_block.resnets.0.norm2.weight"] = old_state_dict.pop("encoder.mid.block_1.norm2.weight")
+    new_state_dict["encoder.mid_block.resnets.0.norm2.bias"]   = old_state_dict.pop("encoder.mid.block_1.norm2.bias")
+    new_state_dict["encoder.mid_block.resnets.0.conv2.weight"] = old_state_dict.pop("encoder.mid.block_1.conv2.weight")
+    new_state_dict["encoder.mid_block.resnets.0.conv2.bias"]   = old_state_dict.pop("encoder.mid.block_1.conv2.bias")
+    new_state_dict["encoder.mid_block.resnets.1.norm1.weight"] = old_state_dict.pop("encoder.mid.block_2.norm1.weight")
+    new_state_dict["encoder.mid_block.resnets.1.norm1.bias"]   = old_state_dict.pop("encoder.mid.block_2.norm1.bias")
+    new_state_dict["encoder.mid_block.resnets.1.conv1.weight"] = old_state_dict.pop("encoder.mid.block_2.conv1.weight")
+    new_state_dict["encoder.mid_block.resnets.1.conv1.bias"]   = old_state_dict.pop("encoder.mid.block_2.conv1.bias")
+    new_state_dict["encoder.mid_block.resnets.1.norm2.weight"] = old_state_dict.pop("encoder.mid.block_2.norm2.weight")
+    new_state_dict["encoder.mid_block.resnets.1.norm2.bias"]   = old_state_dict.pop("encoder.mid.block_2.norm2.bias")
+    new_state_dict["encoder.mid_block.resnets.1.conv2.weight"] = old_state_dict.pop("encoder.mid.block_2.conv2.weight")
+    new_state_dict["encoder.mid_block.resnets.1.conv2.bias"]   = old_state_dict.pop("encoder.mid.block_2.conv2.bias")
+    new_state_dict["encoder.conv_norm_out.weight"]             = old_state_dict.pop("encoder.norm_out.weight")
+    new_state_dict["encoder.conv_norm_out.bias"]               = old_state_dict.pop("encoder.norm_out.bias")
+    new_state_dict["encoder.conv_out.weight"]                  = old_state_dict.pop("encoder.conv_out.weight")
+    new_state_dict["encoder.conv_out.bias"]                    = old_state_dict.pop("encoder.conv_out.bias")
+    new_state_dict["quant_conv.weight"]                        = old_state_dict.pop("quant_conv.weight")
+    new_state_dict["quant_conv.bias"]                          = old_state_dict.pop("quant_conv.bias")
+    new_state_dict["quantize.embedding.weight"]                = old_state_dict.pop("quantize.embedding.weight")
+    new_state_dict["post_quant_conv.weight"]                   = old_state_dict.pop("post_quant_conv.weight")
+    new_state_dict["post_quant_conv.bias"]                     = old_state_dict.pop("post_quant_conv.bias")
+    new_state_dict["decoder.conv_in.weight"]                   = old_state_dict.pop("decoder.conv_in.weight")
+    new_state_dict["decoder.conv_in.bias"]                     = old_state_dict.pop("decoder.conv_in.bias")
+    new_state_dict["decoder.mid_block.resnets.0.norm1.weight"] = old_state_dict.pop("decoder.mid.block_1.norm1.weight")
+    new_state_dict["decoder.mid_block.resnets.0.norm1.bias"]   = old_state_dict.pop("decoder.mid.block_1.norm1.bias")
+    new_state_dict["decoder.mid_block.resnets.0.conv1.weight"] = old_state_dict.pop("decoder.mid.block_1.conv1.weight")
+    new_state_dict["decoder.mid_block.resnets.0.conv1.bias"]   = old_state_dict.pop("decoder.mid.block_1.conv1.bias")
+    new_state_dict["decoder.mid_block.resnets.0.norm2.weight"] = old_state_dict.pop("decoder.mid.block_1.norm2.weight")
+    new_state_dict["decoder.mid_block.resnets.0.norm2.bias"]   = old_state_dict.pop("decoder.mid.block_1.norm2.bias")
+    new_state_dict["decoder.mid_block.resnets.0.conv2.weight"] = old_state_dict.pop("decoder.mid.block_1.conv2.weight")
+    new_state_dict["decoder.mid_block.resnets.0.conv2.bias"]   = old_state_dict.pop("decoder.mid.block_1.conv2.bias")
+    new_state_dict["decoder.mid_block.resnets.1.norm1.weight"] = old_state_dict.pop("decoder.mid.block_2.norm1.weight")
+    new_state_dict["decoder.mid_block.resnets.1.norm1.bias"]   = old_state_dict.pop("decoder.mid.block_2.norm1.bias")
+    new_state_dict["decoder.mid_block.resnets.1.conv1.weight"] = old_state_dict.pop("decoder.mid.block_2.conv1.weight")
+    new_state_dict["decoder.mid_block.resnets.1.conv1.bias"]   = old_state_dict.pop("decoder.mid.block_2.conv1.bias")
+    new_state_dict["decoder.mid_block.resnets.1.norm2.weight"] = old_state_dict.pop("decoder.mid.block_2.norm2.weight")
+    new_state_dict["decoder.mid_block.resnets.1.norm2.bias"]   = old_state_dict.pop("decoder.mid.block_2.norm2.bias")
+    new_state_dict["decoder.mid_block.resnets.1.conv2.weight"] = old_state_dict.pop("decoder.mid.block_2.conv2.weight")
+    new_state_dict["decoder.mid_block.resnets.1.conv2.bias"]   = old_state_dict.pop("decoder.mid.block_2.conv2.bias")
+
+    convert_vae_block_state_dict(old_state_dict, "decoder.up.0", new_state_dict, "decoder.up_blocks.4")
+    convert_vae_block_state_dict(old_state_dict, "decoder.up.1", new_state_dict, "decoder.up_blocks.3")
+    convert_vae_block_state_dict(old_state_dict, "decoder.up.2", new_state_dict, "decoder.up_blocks.2")
+    convert_vae_block_state_dict(old_state_dict, "decoder.up.3", new_state_dict, "decoder.up_blocks.1")
+    convert_vae_block_state_dict(old_state_dict, "decoder.up.4", new_state_dict, "decoder.up_blocks.0")
+
+    new_state_dict["decoder.conv_norm_out.weight"] = old_state_dict.pop("decoder.norm_out.weight")
+    new_state_dict["decoder.conv_norm_out.bias"]   = old_state_dict.pop("decoder.norm_out.bias")
+    new_state_dict["decoder.conv_out.weight"]      = old_state_dict.pop("decoder.conv_out.weight")
+    new_state_dict["decoder.conv_out.bias"]        = old_state_dict.pop("decoder.conv_out.bias")
+
+    # fmt: on
+
+    assert len(old_state_dict.keys()) == 0
+
+    new_vae.load_state_dict(new_state_dict)
+
+    input = torch.randn((1, 3, 512, 512), device=device)
+    input = input.clamp(-1, 1)
+
+    old_encoder_output = old_vae.quant_conv(old_vae.encoder(input))
+    new_encoder_output = new_vae.quant_conv(new_vae.encoder(input))
+    assert (old_encoder_output == new_encoder_output).all()
+
+    old_decoder_output = old_vae.decoder(old_vae.post_quant_conv(old_encoder_output))
+    new_decoder_output = new_vae.decoder(new_vae.post_quant_conv(new_encoder_output))
+
+    # assert (old_decoder_output == new_decoder_output).all()
+    print("kipping vae decoder equivalence check")
+    print(f"vae decoder diff {(old_decoder_output - new_decoder_output).float().abs().sum()}")
+
+    old_output = old_vae(input)[0]
+    new_output = new_vae(input)[0]
+
+    # assert (old_output == new_output).all()
+    print("skipping full vae equivalence check")
+    print(f"vae full diff { (old_output - new_output).float().abs().sum()}")
+
+    return new_vae
+
+
+def convert_vae_block_state_dict(old_state_dict, prefix_from, new_state_dict, prefix_to):
+    # fmt: off
+
+    new_state_dict[f"{prefix_to}.resnets.0.norm1.weight"]             = old_state_dict.pop(f"{prefix_from}.block.0.norm1.weight")
+    new_state_dict[f"{prefix_to}.resnets.0.norm1.bias"]               = old_state_dict.pop(f"{prefix_from}.block.0.norm1.bias")
+    new_state_dict[f"{prefix_to}.resnets.0.conv1.weight"]             = old_state_dict.pop(f"{prefix_from}.block.0.conv1.weight")
+    new_state_dict[f"{prefix_to}.resnets.0.conv1.bias"]               = old_state_dict.pop(f"{prefix_from}.block.0.conv1.bias")
+    new_state_dict[f"{prefix_to}.resnets.0.norm2.weight"]             = old_state_dict.pop(f"{prefix_from}.block.0.norm2.weight")
+    new_state_dict[f"{prefix_to}.resnets.0.norm2.bias"]               = old_state_dict.pop(f"{prefix_from}.block.0.norm2.bias")
+    new_state_dict[f"{prefix_to}.resnets.0.conv2.weight"]             = old_state_dict.pop(f"{prefix_from}.block.0.conv2.weight")
+    new_state_dict[f"{prefix_to}.resnets.0.conv2.bias"]               = old_state_dict.pop(f"{prefix_from}.block.0.conv2.bias")
+
+    if f"{prefix_from}.block.0.nin_shortcut.weight" in old_state_dict:
+        new_state_dict[f"{prefix_to}.resnets.0.conv_shortcut.weight"]     = old_state_dict.pop(f"{prefix_from}.block.0.nin_shortcut.weight")
+        new_state_dict[f"{prefix_to}.resnets.0.conv_shortcut.bias"]       = old_state_dict.pop(f"{prefix_from}.block.0.nin_shortcut.bias")
+
+    new_state_dict[f"{prefix_to}.resnets.1.norm1.weight"]             = old_state_dict.pop(f"{prefix_from}.block.1.norm1.weight")
+    new_state_dict[f"{prefix_to}.resnets.1.norm1.bias"]               = old_state_dict.pop(f"{prefix_from}.block.1.norm1.bias")
+    new_state_dict[f"{prefix_to}.resnets.1.conv1.weight"]             = old_state_dict.pop(f"{prefix_from}.block.1.conv1.weight")
+    new_state_dict[f"{prefix_to}.resnets.1.conv1.bias"]               = old_state_dict.pop(f"{prefix_from}.block.1.conv1.bias")
+    new_state_dict[f"{prefix_to}.resnets.1.norm2.weight"]             = old_state_dict.pop(f"{prefix_from}.block.1.norm2.weight")
+    new_state_dict[f"{prefix_to}.resnets.1.norm2.bias"]               = old_state_dict.pop(f"{prefix_from}.block.1.norm2.bias")
+    new_state_dict[f"{prefix_to}.resnets.1.conv2.weight"]             = old_state_dict.pop(f"{prefix_from}.block.1.conv2.weight")
+    new_state_dict[f"{prefix_to}.resnets.1.conv2.bias"]               = old_state_dict.pop(f"{prefix_from}.block.1.conv2.bias")
+
+    if f"{prefix_from}.downsample.conv.weight" in old_state_dict:
+        new_state_dict[f"{prefix_to}.downsamplers.0.conv.weight"]         = old_state_dict.pop(f"{prefix_from}.downsample.conv.weight")
+        new_state_dict[f"{prefix_to}.downsamplers.0.conv.bias"]           = old_state_dict.pop(f"{prefix_from}.downsample.conv.bias")
+
+    if f"{prefix_from}.upsample.conv.weight" in old_state_dict:
+        new_state_dict[f"{prefix_to}.upsamplers.0.conv.weight"]         = old_state_dict.pop(f"{prefix_from}.upsample.conv.weight")
+        new_state_dict[f"{prefix_to}.upsamplers.0.conv.bias"]           = old_state_dict.pop(f"{prefix_from}.upsample.conv.bias")
+
+    if f"{prefix_from}.block.2.norm1.weight" in old_state_dict:
+        new_state_dict[f"{prefix_to}.resnets.2.norm1.weight"]             = old_state_dict.pop(f"{prefix_from}.block.2.norm1.weight")
+        new_state_dict[f"{prefix_to}.resnets.2.norm1.bias"]               = old_state_dict.pop(f"{prefix_from}.block.2.norm1.bias")
+        new_state_dict[f"{prefix_to}.resnets.2.conv1.weight"]             = old_state_dict.pop(f"{prefix_from}.block.2.conv1.weight")
+        new_state_dict[f"{prefix_to}.resnets.2.conv1.bias"]               = old_state_dict.pop(f"{prefix_from}.block.2.conv1.bias")
+        new_state_dict[f"{prefix_to}.resnets.2.norm2.weight"]             = old_state_dict.pop(f"{prefix_from}.block.2.norm2.weight")
+        new_state_dict[f"{prefix_to}.resnets.2.norm2.bias"]               = old_state_dict.pop(f"{prefix_from}.block.2.norm2.bias")
+        new_state_dict[f"{prefix_to}.resnets.2.conv2.weight"]             = old_state_dict.pop(f"{prefix_from}.block.2.conv2.weight")
+        new_state_dict[f"{prefix_to}.resnets.2.conv2.bias"]               = old_state_dict.pop(f"{prefix_from}.block.2.conv2.bias")
+
+    # fmt: on
+
+
+if __name__ == "__main__":
+    main()

src/diffusers/__init__.py

@@ -95,6 +95,7 @@ else:
             "UNet3DConditionModel",
             "UNetMotionModel",
             "UNetSpatioTemporalConditionModel",
+            "UVit2DModel",
             "VQModel",
         ]
     )
@@ -131,6 +132,7 @@ else:
     )
     _import_structure["schedulers"].extend(
         [
+            "AmusedScheduler",
             "CMStochasticIterativeScheduler",
             "DDIMInverseScheduler",
             "DDIMParallelScheduler",
@@ -202,6 +204,9 @@ else:
         [
             "AltDiffusionImg2ImgPipeline",
             "AltDiffusionPipeline",
+            "AmusedImg2ImgPipeline",
+            "AmusedInpaintPipeline",
+            "AmusedPipeline",
             "AnimateDiffPipeline",
             "AudioLDM2Pipeline",
             "AudioLDM2ProjectionModel",
@@ -472,6 +477,7 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
             UNet3DConditionModel,
             UNetMotionModel,
             UNetSpatioTemporalConditionModel,
+            UVit2DModel,
             VQModel,
         )
         from .optimization import (
@@ -506,6 +512,7 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
             ScoreSdeVePipeline,
         )
         from .schedulers import (
+            AmusedScheduler,
             CMStochasticIterativeScheduler,
             DDIMInverseScheduler,
             DDIMParallelScheduler,
@@ -560,6 +567,9 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
         from .pipelines import (
             AltDiffusionImg2ImgPipeline,
             AltDiffusionPipeline,
+            AmusedImg2ImgPipeline,
+            AmusedInpaintPipeline,
+            AmusedPipeline,
             AnimateDiffPipeline,
             AudioLDM2Pipeline,
             AudioLDM2ProjectionModel,

src/diffusers/loaders/lora.py

@@ -59,6 +59,7 @@ logger = logging.get_logger(__name__)
 
 TEXT_ENCODER_NAME = "text_encoder"
 UNET_NAME = "unet"
+TRANSFORMER_NAME = "transformer"
 
 LORA_WEIGHT_NAME = "pytorch_lora_weights.bin"
 LORA_WEIGHT_NAME_SAFE = "pytorch_lora_weights.safetensors"
@@ -74,6 +75,7 @@ class LoraLoaderMixin:
 
     text_encoder_name = TEXT_ENCODER_NAME
     unet_name = UNET_NAME
+    transformer_name = TRANSFORMER_NAME
     num_fused_loras = 0
 
     def load_lora_weights(
@@ -661,6 +663,89 @@ class LoraLoaderMixin:
                     _pipeline.enable_sequential_cpu_offload()
                 # Unsafe code />
 
+    @classmethod
+    def load_lora_into_transformer(
+        cls, state_dict, network_alphas, transformer, low_cpu_mem_usage=None, adapter_name=None, _pipeline=None
+    ):
+        """
+        This will load the LoRA layers specified in `state_dict` into `transformer`.
+
+        Parameters:
+            state_dict (`dict`):
+                A standard state dict containing the lora layer parameters. The keys can either be indexed directly
+                into the unet or prefixed with an additional `unet` which can be used to distinguish between text
+                encoder lora layers.
+            network_alphas (`Dict[str, float]`):
+                See `LoRALinearLayer` for more details.
+            unet (`UNet2DConditionModel`):
+                The UNet model to load the LoRA layers into.
+            low_cpu_mem_usage (`bool`, *optional*, defaults to `True` if torch version >= 1.9.0 else `False`):
+                Speed up model loading only loading the pretrained weights and not initializing the weights. This also
+                tries to not use more than 1x model size in CPU memory (including peak memory) while loading the model.
+                Only supported for PyTorch >= 1.9.0. If you are using an older version of PyTorch, setting this
+                argument to `True` will raise an error.
+            adapter_name (`str`, *optional*):
+                Adapter name to be used for referencing the loaded adapter model. If not specified, it will use
+                `default_{i}` where i is the total number of adapters being loaded.
+        """
+        low_cpu_mem_usage = low_cpu_mem_usage if low_cpu_mem_usage is not None else _LOW_CPU_MEM_USAGE_DEFAULT
+
+        keys = list(state_dict.keys())
+
+        transformer_keys = [k for k in keys if k.startswith(cls.transformer_name)]
+        state_dict = {
+            k.replace(f"{cls.transformer_name}.", ""): v for k, v in state_dict.items() if k in transformer_keys
+        }
+
+        if network_alphas is not None:
+            alpha_keys = [k for k in network_alphas.keys() if k.startswith(cls.transformer_name)]
+            network_alphas = {
+                k.replace(f"{cls.transformer_name}.", ""): v for k, v in network_alphas.items() if k in alpha_keys
+            }
+
+        if len(state_dict.keys()) > 0:
+            from peft import LoraConfig, inject_adapter_in_model, set_peft_model_state_dict
+
+            if adapter_name in getattr(transformer, "peft_config", {}):
+                raise ValueError(
+                    f"Adapter name {adapter_name} already in use in the transformer - please select a new adapter name."
+                )
+
+            rank = {}
+            for key, val in state_dict.items():
+                if "lora_B" in key:
+                    rank[key] = val.shape[1]
+
+            lora_config_kwargs = get_peft_kwargs(rank, network_alphas, state_dict)
+            lora_config = LoraConfig(**lora_config_kwargs)
+
+            # adapter_name
+            if adapter_name is None:
+                adapter_name = get_adapter_name(transformer)
+
+            # In case the pipeline has been already offloaded to CPU - temporarily remove the hooks
+            # otherwise loading LoRA weights will lead to an error
+            is_model_cpu_offload, is_sequential_cpu_offload = cls._optionally_disable_offloading(_pipeline)
+
+            inject_adapter_in_model(lora_config, transformer, adapter_name=adapter_name)
+            incompatible_keys = set_peft_model_state_dict(transformer, state_dict, adapter_name)
+
+            if incompatible_keys is not None:
+                # check only for unexpected keys
+                unexpected_keys = getattr(incompatible_keys, "unexpected_keys", None)
+                if unexpected_keys:
+                    logger.warning(
+                        f"Loading adapter weights from state_dict led to unexpected keys not found in the model: "
+                        f" {unexpected_keys}. "
+                    )
+
+            # Offload back.
+            if is_model_cpu_offload:
+                _pipeline.enable_model_cpu_offload()
+            elif is_sequential_cpu_offload:
+                _pipeline.enable_sequential_cpu_offload()
+            # Unsafe code />
+
     @property
     def lora_scale(self) -> float:
         # property function that returns the lora scale which can be set at run time by the pipeline.
@@ -786,6 +871,7 @@ class LoraLoaderMixin:
         save_directory: Union[str, os.PathLike],
         unet_lora_layers: Dict[str, Union[torch.nn.Module, torch.Tensor]] = None,
         text_encoder_lora_layers: Dict[str, torch.nn.Module] = None,
+        transformer_lora_layers: Dict[str, torch.nn.Module] = None,
         is_main_process: bool = True,
         weight_name: str = None,
         save_function: Callable = None,
@@ -820,8 +906,10 @@ class LoraLoaderMixin:
             layers_state_dict = {f"{prefix}.{module_name}": param for module_name, param in layers_weights.items()}
             return layers_state_dict
 
-        if not (unet_lora_layers or text_encoder_lora_layers):
-            raise ValueError("You must pass at least one of `unet_lora_layers`, `text_encoder_lora_layers`.")
+        if not (unet_lora_layers or text_encoder_lora_layers or transformer_lora_layers):
+            raise ValueError(
+                "You must pass at least one of `unet_lora_layers`, `text_encoder_lora_layers`, or `transformer_lora_layers`."
+            )
 
         if unet_lora_layers:
             state_dict.update(pack_weights(unet_lora_layers, "unet"))
@@ -829,6 +917,9 @@ class LoraLoaderMixin:
         if text_encoder_lora_layers:
             state_dict.update(pack_weights(text_encoder_lora_layers, "text_encoder"))
 
+        if transformer_lora_layers:
+            state_dict.update(pack_weights(transformer_lora_layers, "transformer"))
+
         # Save the model
         cls.write_lora_layers(
             state_dict=state_dict,

src/diffusers/models/__init__.py

@@ -47,6 +47,7 @@ if is_torch_available():
     _import_structure["unet_kandinsky3"] = ["Kandinsky3UNet"]
     _import_structure["unet_motion_model"] = ["MotionAdapter", "UNetMotionModel"]
     _import_structure["unet_spatio_temporal_condition"] = ["UNetSpatioTemporalConditionModel"]
+    _import_structure["uvit_2d"] = ["UVit2DModel"]
     _import_structure["vq_model"] = ["VQModel"]
 
 if is_flax_available():
@@ -81,6 +82,7 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
         from .unet_kandinsky3 import Kandinsky3UNet
         from .unet_motion_model import MotionAdapter, UNetMotionModel
         from .unet_spatio_temporal_condition import UNetSpatioTemporalConditionModel
+        from .uvit_2d import UVit2DModel
         from .vq_model import VQModel
 
     if is_flax_available():

src/diffusers/models/attention.py

@@ -14,6 +14,7 @@
 from typing import Any, Dict, Optional
 
 import torch
+import torch.nn.functional as F
 from torch import nn
 
 from ..utils import USE_PEFT_BACKEND
@@ -22,7 +23,7 @@ from .activations import GEGLU, GELU, ApproximateGELU
 from .attention_processor import Attention
 from .embeddings import SinusoidalPositionalEmbedding
 from .lora import LoRACompatibleLinear
-from .normalization import AdaLayerNorm, AdaLayerNormZero
+from .normalization import AdaLayerNorm, AdaLayerNormContinuous, AdaLayerNormZero, RMSNorm
 
 
 def _chunked_feed_forward(
@@ -148,6 +149,11 @@ class BasicTransformerBlock(nn.Module):
         attention_type: str = "default",
         positional_embeddings: Optional[str] = None,
         num_positional_embeddings: Optional[int] = None,
+        ada_norm_continous_conditioning_embedding_dim: Optional[int] = None,
+        ada_norm_bias: Optional[int] = None,
+        ff_inner_dim: Optional[int] = None,
+        ff_bias: bool = True,
+        attention_out_bias: bool = True,
     ):
         super().__init__()
         self.only_cross_attention = only_cross_attention
@@ -156,6 +162,7 @@ class BasicTransformerBlock(nn.Module):
         self.use_ada_layer_norm = (num_embeds_ada_norm is not None) and norm_type == "ada_norm"
         self.use_ada_layer_norm_single = norm_type == "ada_norm_single"
         self.use_layer_norm = norm_type == "layer_norm"
+        self.use_ada_layer_norm_continuous = norm_type == "ada_norm_continuous"
 
         if norm_type in ("ada_norm", "ada_norm_zero") and num_embeds_ada_norm is None:
             raise ValueError(
@@ -179,6 +186,15 @@ class BasicTransformerBlock(nn.Module):
             self.norm1 = AdaLayerNorm(dim, num_embeds_ada_norm)
         elif self.use_ada_layer_norm_zero:
             self.norm1 = AdaLayerNormZero(dim, num_embeds_ada_norm)
+        elif self.use_ada_layer_norm_continuous:
+            self.norm1 = AdaLayerNormContinuous(
+                dim,
+                ada_norm_continous_conditioning_embedding_dim,
+                norm_elementwise_affine,
+                norm_eps,
+                ada_norm_bias,
+                "rms_norm",
+            )
         else:
             self.norm1 = nn.LayerNorm(dim, elementwise_affine=norm_elementwise_affine, eps=norm_eps)
 
@@ -190,6 +206,7 @@ class BasicTransformerBlock(nn.Module):
             bias=attention_bias,
             cross_attention_dim=cross_attention_dim if only_cross_attention else None,
             upcast_attention=upcast_attention,
+            out_bias=attention_out_bias,
         )
 
         # 2. Cross-Attn
@@ -197,11 +214,20 @@ class BasicTransformerBlock(nn.Module):
             # We currently only use AdaLayerNormZero for self attention where there will only be one attention block.
             # I.e. the number of returned modulation chunks from AdaLayerZero would not make sense if returned during
             # the second cross attention block.
-            self.norm2 = (
-                AdaLayerNorm(dim, num_embeds_ada_norm)
-                if self.use_ada_layer_norm
-                else nn.LayerNorm(dim, elementwise_affine=norm_elementwise_affine, eps=norm_eps)
-            )
+            if self.use_ada_layer_norm:
+                self.norm2 = AdaLayerNorm(dim, num_embeds_ada_norm)
+            elif self.use_ada_layer_norm_continuous:
+                self.norm2 = AdaLayerNormContinuous(
+                    dim,
+                    ada_norm_continous_conditioning_embedding_dim,
+                    norm_elementwise_affine,
+                    norm_eps,
+                    ada_norm_bias,
+                    "rms_norm",
+                )
+            else:
+                self.norm2 = nn.LayerNorm(dim, norm_eps, norm_elementwise_affine)
+
             self.attn2 = Attention(
                 query_dim=dim,
                 cross_attention_dim=cross_attention_dim if not double_self_attention else None,
@@ -210,20 +236,32 @@ class BasicTransformerBlock(nn.Module):
                 dropout=dropout,
                 bias=attention_bias,
                 upcast_attention=upcast_attention,
+                out_bias=attention_out_bias,
             )  # is self-attn if encoder_hidden_states is none
         else:
             self.norm2 = None
             self.attn2 = None
 
         # 3. Feed-forward
-        if not self.use_ada_layer_norm_single:
-            self.norm3 = nn.LayerNorm(dim, elementwise_affine=norm_elementwise_affine, eps=norm_eps)
+        if self.use_ada_layer_norm_continuous:
+            self.norm3 = AdaLayerNormContinuous(
+                dim,
+                ada_norm_continous_conditioning_embedding_dim,
+                norm_elementwise_affine,
+                norm_eps,
+                ada_norm_bias,
+                "layer_norm",
+            )
+        elif not self.use_ada_layer_norm_single:
+            self.norm3 = nn.LayerNorm(dim, norm_eps, norm_elementwise_affine)
 
         self.ff = FeedForward(
             dim,
             dropout=dropout,
             activation_fn=activation_fn,
             final_dropout=final_dropout,
+            inner_dim=ff_inner_dim,
+            bias=ff_bias,
         )
 
         # 4. Fuser
@@ -252,6 +290,7 @@ class BasicTransformerBlock(nn.Module):
         timestep: Optional[torch.LongTensor] = None,
         cross_attention_kwargs: Dict[str, Any] = None,
         class_labels: Optional[torch.LongTensor] = None,
+        added_cond_kwargs: Optional[Dict[str, torch.Tensor]] = None,
     ) -> torch.FloatTensor:
         # Notice that normalization is always applied before the real computation in the following blocks.
         # 0. Self-Attention
@@ -265,6 +304,8 @@ class BasicTransformerBlock(nn.Module):
             )
         elif self.use_layer_norm:
             norm_hidden_states = self.norm1(hidden_states)
+        elif self.use_ada_layer_norm_continuous:
+            norm_hidden_states = self.norm1(hidden_states, added_cond_kwargs["pooled_text_emb"])
         elif self.use_ada_layer_norm_single:
             shift_msa, scale_msa, gate_msa, shift_mlp, scale_mlp, gate_mlp = (
                 self.scale_shift_table[None] + timestep.reshape(batch_size, 6, -1)
@@ -314,6 +355,8 @@ class BasicTransformerBlock(nn.Module):
                 # For PixArt norm2 isn't applied here:
                 # https://github.com/PixArt-alpha/PixArt-alpha/blob/0f55e922376d8b797edd44d25d0e7464b260dcab/diffusion/model/nets/PixArtMS.py#L70C1-L76C103
                 norm_hidden_states = hidden_states
+            elif self.use_ada_layer_norm_continuous:
+                norm_hidden_states = self.norm2(hidden_states, added_cond_kwargs["pooled_text_emb"])
             else:
                 raise ValueError("Incorrect norm")
 
@@ -329,7 +372,9 @@ class BasicTransformerBlock(nn.Module):
             hidden_states = attn_output + hidden_states
 
         # 4. Feed-forward
-        if not self.use_ada_layer_norm_single:
+        if self.use_ada_layer_norm_continuous:
+            norm_hidden_states = self.norm3(hidden_states, added_cond_kwargs["pooled_text_emb"])
+        elif not self.use_ada_layer_norm_single:
             norm_hidden_states = self.norm3(hidden_states)
 
         if self.use_ada_layer_norm_zero:
@@ -490,6 +535,78 @@ class TemporalBasicTransformerBlock(nn.Module):
         return hidden_states
 
 
+class SkipFFTransformerBlock(nn.Module):
+    def __init__(
+        self,
+        dim: int,
+        num_attention_heads: int,
+        attention_head_dim: int,
+        kv_input_dim: int,
+        kv_input_dim_proj_use_bias: bool,
+        dropout=0.0,
+        cross_attention_dim: Optional[int] = None,
+        attention_bias: bool = False,
+        attention_out_bias: bool = True,
+    ):
+        super().__init__()
+        if kv_input_dim != dim:
+            self.kv_mapper = nn.Linear(kv_input_dim, dim, kv_input_dim_proj_use_bias)
+        else:
+            self.kv_mapper = None
+
+        self.norm1 = RMSNorm(dim, 1e-06)
+
+        self.attn1 = Attention(
+            query_dim=dim,
+            heads=num_attention_heads,
+            dim_head=attention_head_dim,
+            dropout=dropout,
+            bias=attention_bias,
+            cross_attention_dim=cross_attention_dim,
+            out_bias=attention_out_bias,
+        )
+
+        self.norm2 = RMSNorm(dim, 1e-06)
+
+        self.attn2 = Attention(
+            query_dim=dim,
+            cross_attention_dim=cross_attention_dim,
+            heads=num_attention_heads,
+            dim_head=attention_head_dim,
+            dropout=dropout,
+            bias=attention_bias,
+            out_bias=attention_out_bias,
+        )
+
+    def forward(self, hidden_states, encoder_hidden_states, cross_attention_kwargs):
+        cross_attention_kwargs = cross_attention_kwargs.copy() if cross_attention_kwargs is not None else {}
+
+        if self.kv_mapper is not None:
+            encoder_hidden_states = self.kv_mapper(F.silu(encoder_hidden_states))
+
+        norm_hidden_states = self.norm1(hidden_states)
+
+        attn_output = self.attn1(
+            norm_hidden_states,
+            encoder_hidden_states=encoder_hidden_states,
+            **cross_attention_kwargs,
+        )
+
+        hidden_states = attn_output + hidden_states
+
+        norm_hidden_states = self.norm2(hidden_states)
+
+        attn_output = self.attn2(
+            norm_hidden_states,
+            encoder_hidden_states=encoder_hidden_states,
+            **cross_attention_kwargs,
+        )
+
+        hidden_states = attn_output + hidden_states
+
+        return hidden_states
+
+
 class FeedForward(nn.Module):
     r"""
     A feed-forward layer.
@@ -512,10 +629,12 @@ class FeedForward(nn.Module):
         dropout: float = 0.0,
         activation_fn: str = "geglu",
         final_dropout: bool = False,
+        inner_dim=None,
         bias: bool = True,
     ):
         super().__init__()
-        inner_dim = int(dim * mult)
+        if inner_dim is None:
+            inner_dim = int(dim * mult)
         dim_out = dim_out if dim_out is not None else dim
         linear_cls = LoRACompatibleLinear if not USE_PEFT_BACKEND else nn.Linear
 

src/diffusers/models/autoencoders/vae.py

@@ -77,6 +77,7 @@ class Encoder(nn.Module):
         norm_num_groups: int = 32,
         act_fn: str = "silu",
         double_z: bool = True,
+        mid_block_add_attention=True,
     ):
         super().__init__()
         self.layers_per_block = layers_per_block
@@ -124,6 +125,7 @@ class Encoder(nn.Module):
             attention_head_dim=block_out_channels[-1],
             resnet_groups=norm_num_groups,
             temb_channels=None,
+            add_attention=mid_block_add_attention,
         )
 
         # out
@@ -213,6 +215,7 @@ class Decoder(nn.Module):
         norm_num_groups: int = 32,
         act_fn: str = "silu",
         norm_type: str = "group",  # group, spatial
+        mid_block_add_attention=True,
     ):
         super().__init__()
         self.layers_per_block = layers_per_block
@@ -240,6 +243,7 @@ class Decoder(nn.Module):
             attention_head_dim=block_out_channels[-1],
             resnet_groups=norm_num_groups,
             temb_channels=temb_channels,
+            add_attention=mid_block_add_attention,
         )
 
         # up

src/diffusers/models/downsampling.py

@@ -0,0 +1,338 @@
+# Copyright 2023 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import Optional, Tuple
+
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+
+from ..utils import USE_PEFT_BACKEND
+from .lora import LoRACompatibleConv
+from .normalization import RMSNorm
+from .upsampling import upfirdn2d_native
+
+
+class Downsample1D(nn.Module):
+    """A 1D downsampling layer with an optional convolution.
+
+    Parameters:
+        channels (`int`):
+            number of channels in the inputs and outputs.
+        use_conv (`bool`, default `False`):
+            option to use a convolution.
+        out_channels (`int`, optional):
+            number of output channels. Defaults to `channels`.
+        padding (`int`, default `1`):
+            padding for the convolution.
+        name (`str`, default `conv`):
+            name of the downsampling 1D layer.
+    """
+
+    def __init__(
+        self,
+        channels: int,
+        use_conv: bool = False,
+        out_channels: Optional[int] = None,
+        padding: int = 1,
+        name: str = "conv",
+    ):
+        super().__init__()
+        self.channels = channels
+        self.out_channels = out_channels or channels
+        self.use_conv = use_conv
+        self.padding = padding
+        stride = 2
+        self.name = name
+
+        if use_conv:
+            self.conv = nn.Conv1d(self.channels, self.out_channels, 3, stride=stride, padding=padding)
+        else:
+            assert self.channels == self.out_channels
+            self.conv = nn.AvgPool1d(kernel_size=stride, stride=stride)
+
+    def forward(self, inputs: torch.Tensor) -> torch.Tensor:
+        assert inputs.shape[1] == self.channels
+        return self.conv(inputs)
+
+
+class Downsample2D(nn.Module):
+    """A 2D downsampling layer with an optional convolution.
+
+    Parameters:
+        channels (`int`):
+            number of channels in the inputs and outputs.
+        use_conv (`bool`, default `False`):
+            option to use a convolution.
+        out_channels (`int`, optional):
+            number of output channels. Defaults to `channels`.
+        padding (`int`, default `1`):
+            padding for the convolution.
+        name (`str`, default `conv`):
+            name of the downsampling 2D layer.
+    """
+
+    def __init__(
+        self,
+        channels: int,
+        use_conv: bool = False,
+        out_channels: Optional[int] = None,
+        padding: int = 1,
+        name: str = "conv",
+        kernel_size=3,
+        norm_type=None,
+        eps=None,
+        elementwise_affine=None,
+        bias=True,
+    ):
+        super().__init__()
+        self.channels = channels
+        self.out_channels = out_channels or channels
+        self.use_conv = use_conv
+        self.padding = padding
+        stride = 2
+        self.name = name
+        conv_cls = nn.Conv2d if USE_PEFT_BACKEND else LoRACompatibleConv
+
+        if norm_type == "ln_norm":
+            self.norm = nn.LayerNorm(channels, eps, elementwise_affine)
+        elif norm_type == "rms_norm":
+            self.norm = RMSNorm(channels, eps, elementwise_affine)
+        elif norm_type is None:
+            self.norm = None
+        else:
+            raise ValueError(f"unknown norm_type: {norm_type}")
+
+        if use_conv:
+            conv = conv_cls(
+                self.channels, self.out_channels, kernel_size=kernel_size, stride=stride, padding=padding, bias=bias
+            )
+        else:
+            assert self.channels == self.out_channels
+            conv = nn.AvgPool2d(kernel_size=stride, stride=stride)
+
+        # TODO(Suraj, Patrick) - clean up after weight dicts are correctly renamed
+        if name == "conv":
+            self.Conv2d_0 = conv
+            self.conv = conv
+        elif name == "Conv2d_0":
+            self.conv = conv
+        else:
+            self.conv = conv
+
+    def forward(self, hidden_states: torch.FloatTensor, scale: float = 1.0) -> torch.FloatTensor:
+        assert hidden_states.shape[1] == self.channels
+
+        if self.norm is not None:
+            hidden_states = self.norm(hidden_states.permute(0, 2, 3, 1)).permute(0, 3, 1, 2)
+
+        if self.use_conv and self.padding == 0:
+            pad = (0, 1, 0, 1)
+            hidden_states = F.pad(hidden_states, pad, mode="constant", value=0)
+
+        assert hidden_states.shape[1] == self.channels
+
+        if not USE_PEFT_BACKEND:
+            if isinstance(self.conv, LoRACompatibleConv):
+                hidden_states = self.conv(hidden_states, scale)
+            else:
+                hidden_states = self.conv(hidden_states)
+        else:
+            hidden_states = self.conv(hidden_states)
+
+        return hidden_states
+
+
+class FirDownsample2D(nn.Module):
+    """A 2D FIR downsampling layer with an optional convolution.
+
+    Parameters:
+        channels (`int`):
+            number of channels in the inputs and outputs.
+        use_conv (`bool`, default `False`):
+            option to use a convolution.
+        out_channels (`int`, optional):
+            number of output channels. Defaults to `channels`.
+        fir_kernel (`tuple`, default `(1, 3, 3, 1)`):
+            kernel for the FIR filter.
+    """
+
+    def __init__(
+        self,
+        channels: Optional[int] = None,
+        out_channels: Optional[int] = None,
+        use_conv: bool = False,
+        fir_kernel: Tuple[int, int, int, int] = (1, 3, 3, 1),
+    ):
+        super().__init__()
+        out_channels = out_channels if out_channels else channels
+        if use_conv:
+            self.Conv2d_0 = nn.Conv2d(channels, out_channels, kernel_size=3, stride=1, padding=1)
+        self.fir_kernel = fir_kernel
+        self.use_conv = use_conv
+        self.out_channels = out_channels
+
+    def _downsample_2d(
+        self,
+        hidden_states: torch.FloatTensor,
+        weight: Optional[torch.FloatTensor] = None,
+        kernel: Optional[torch.FloatTensor] = None,
+        factor: int = 2,
+        gain: float = 1,
+    ) -> torch.FloatTensor:
+        """Fused `Conv2d()` followed by `downsample_2d()`.
+        Padding is performed only once at the beginning, not between the operations. The fused op is considerably more
+        efficient than performing the same calculation using standard TensorFlow ops. It supports gradients of
+        arbitrary order.
+
+        Args:
+            hidden_states (`torch.FloatTensor`):
+                Input tensor of the shape `[N, C, H, W]` or `[N, H, W, C]`.
+            weight (`torch.FloatTensor`, *optional*):
+                Weight tensor of the shape `[filterH, filterW, inChannels, outChannels]`. Grouped convolution can be
+                performed by `inChannels = x.shape[0] // numGroups`.
+            kernel (`torch.FloatTensor`, *optional*):
+                FIR filter of the shape `[firH, firW]` or `[firN]` (separable). The default is `[1] * factor`, which
+                corresponds to average pooling.
+            factor (`int`, *optional*, default to `2`):
+                Integer downsampling factor.
+            gain (`float`, *optional*, default to `1.0`):
+                Scaling factor for signal magnitude.
+
+        Returns:
+            output (`torch.FloatTensor`):
+                Tensor of the shape `[N, C, H // factor, W // factor]` or `[N, H // factor, W // factor, C]`, and same
+                datatype as `x`.
+        """
+
+        assert isinstance(factor, int) and factor >= 1
+        if kernel is None:
+            kernel = [1] * factor
+
+        # setup kernel
+        kernel = torch.tensor(kernel, dtype=torch.float32)
+        if kernel.ndim == 1:
+            kernel = torch.outer(kernel, kernel)
+        kernel /= torch.sum(kernel)
+
+        kernel = kernel * gain
+
+        if self.use_conv:
+            _, _, convH, convW = weight.shape
+            pad_value = (kernel.shape[0] - factor) + (convW - 1)
+            stride_value = [factor, factor]
+            upfirdn_input = upfirdn2d_native(
+                hidden_states,
+                torch.tensor(kernel, device=hidden_states.device),
+                pad=((pad_value + 1) // 2, pad_value // 2),
+            )
+            output = F.conv2d(upfirdn_input, weight, stride=stride_value, padding=0)
+        else:
+            pad_value = kernel.shape[0] - factor
+            output = upfirdn2d_native(
+                hidden_states,
+                torch.tensor(kernel, device=hidden_states.device),
+                down=factor,
+                pad=((pad_value + 1) // 2, pad_value // 2),
+            )
+
+        return output
+
+    def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
+        if self.use_conv:
+            downsample_input = self._downsample_2d(hidden_states, weight=self.Conv2d_0.weight, kernel=self.fir_kernel)
+            hidden_states = downsample_input + self.Conv2d_0.bias.reshape(1, -1, 1, 1)
+        else:
+            hidden_states = self._downsample_2d(hidden_states, kernel=self.fir_kernel, factor=2)
+
+        return hidden_states
+
+
+# downsample/upsample layer used in k-upscaler, might be able to use FirDownsample2D/DirUpsample2D instead
+class KDownsample2D(nn.Module):
+    r"""A 2D K-downsampling layer.
+
+    Parameters:
+        pad_mode (`str`, *optional*, default to `"reflect"`): the padding mode to use.
+    """
+
+    def __init__(self, pad_mode: str = "reflect"):
+        super().__init__()
+        self.pad_mode = pad_mode
+        kernel_1d = torch.tensor([[1 / 8, 3 / 8, 3 / 8, 1 / 8]])
+        self.pad = kernel_1d.shape[1] // 2 - 1
+        self.register_buffer("kernel", kernel_1d.T @ kernel_1d, persistent=False)
+
+    def forward(self, inputs: torch.Tensor) -> torch.Tensor:
+        inputs = F.pad(inputs, (self.pad,) * 4, self.pad_mode)
+        weight = inputs.new_zeros(
+            [
+                inputs.shape[1],
+                inputs.shape[1],
+                self.kernel.shape[0],
+                self.kernel.shape[1],
+            ]
+        )
+        indices = torch.arange(inputs.shape[1], device=inputs.device)
+        kernel = self.kernel.to(weight)[None, :].expand(inputs.shape[1], -1, -1)
+        weight[indices, indices] = kernel
+        return F.conv2d(inputs, weight, stride=2)
+
+
+def downsample_2d(
+    hidden_states: torch.FloatTensor,
+    kernel: Optional[torch.FloatTensor] = None,
+    factor: int = 2,
+    gain: float = 1,
+) -> torch.FloatTensor:
+    r"""Downsample2D a batch of 2D images with the given filter.
+    Accepts a batch of 2D images of the shape `[N, C, H, W]` or `[N, H, W, C]` and downsamples each image with the
+    given filter. The filter is normalized so that if the input pixels are constant, they will be scaled by the
+    specified `gain`. Pixels outside the image are assumed to be zero, and the filter is padded with zeros so that its
+    shape is a multiple of the downsampling factor.
+
+    Args:
+        hidden_states (`torch.FloatTensor`)
+            Input tensor of the shape `[N, C, H, W]` or `[N, H, W, C]`.
+        kernel (`torch.FloatTensor`, *optional*):
+            FIR filter of the shape `[firH, firW]` or `[firN]` (separable). The default is `[1] * factor`, which
+            corresponds to average pooling.
+        factor (`int`, *optional*, default to `2`):
+            Integer downsampling factor.
+        gain (`float`, *optional*, default to `1.0`):
+            Scaling factor for signal magnitude.
+
+    Returns:
+        output (`torch.FloatTensor`):
+            Tensor of the shape `[N, C, H // factor, W // factor]`
+    """
+
+    assert isinstance(factor, int) and factor >= 1
+    if kernel is None:
+        kernel = [1] * factor
+
+    kernel = torch.tensor(kernel, dtype=torch.float32)
+    if kernel.ndim == 1:
+        kernel = torch.outer(kernel, kernel)
+    kernel /= torch.sum(kernel)
+
+    kernel = kernel * gain
+    pad_value = kernel.shape[0] - factor
+    output = upfirdn2d_native(
+        hidden_states,
+        kernel.to(device=hidden_states.device),
+        down=factor,
+        pad=((pad_value + 1) // 2, pad_value // 2),
+    )
+    return output

src/diffusers/models/embeddings.py

@@ -197,11 +197,12 @@ class TimestepEmbedding(nn.Module):
         out_dim: int = None,
         post_act_fn: Optional[str] = None,
         cond_proj_dim=None,
+        sample_proj_bias=True,
     ):
         super().__init__()
         linear_cls = nn.Linear if USE_PEFT_BACKEND else LoRACompatibleLinear
 
-        self.linear_1 = linear_cls(in_channels, time_embed_dim)
+        self.linear_1 = linear_cls(in_channels, time_embed_dim, sample_proj_bias)
 
         if cond_proj_dim is not None:
             self.cond_proj = nn.Linear(cond_proj_dim, in_channels, bias=False)
@@ -214,7 +215,7 @@ class TimestepEmbedding(nn.Module):
             time_embed_dim_out = out_dim
         else:
             time_embed_dim_out = time_embed_dim
-        self.linear_2 = linear_cls(time_embed_dim, time_embed_dim_out)
+        self.linear_2 = linear_cls(time_embed_dim, time_embed_dim_out, sample_proj_bias)
 
         if post_act_fn is None:
             self.post_act = None
@@ -729,7 +730,7 @@ class PositionNet(nn.Module):
         return objs
 
 
-class CombinedTimestepSizeEmbeddings(nn.Module):
+class PixArtAlphaCombinedTimestepSizeEmbeddings(nn.Module):
     """
     For PixArt-Alpha.
 
@@ -746,45 +747,27 @@ class CombinedTimestepSizeEmbeddings(nn.Module):
 
         self.use_additional_conditions = use_additional_conditions
         if use_additional_conditions:
-            self.use_additional_conditions = True
             self.additional_condition_proj = Timesteps(num_channels=256, flip_sin_to_cos=True, downscale_freq_shift=0)
             self.resolution_embedder = TimestepEmbedding(in_channels=256, time_embed_dim=size_emb_dim)
             self.aspect_ratio_embedder = TimestepEmbedding(in_channels=256, time_embed_dim=size_emb_dim)
 
-    def apply_condition(self, size: torch.Tensor, batch_size: int, embedder: nn.Module):
-        if size.ndim == 1:
-            size = size[:, None]
-
-        if size.shape[0] != batch_size:
-            size = size.repeat(batch_size // size.shape[0], 1)
-            if size.shape[0] != batch_size:
-                raise ValueError(f"`batch_size` should be {size.shape[0]} but found {batch_size}.")
-
-        current_batch_size, dims = size.shape[0], size.shape[1]
-        size = size.reshape(-1)
-        size_freq = self.additional_condition_proj(size).to(size.dtype)
-
-        size_emb = embedder(size_freq)
-        size_emb = size_emb.reshape(current_batch_size, dims * self.outdim)
-        return size_emb
-
     def forward(self, timestep, resolution, aspect_ratio, batch_size, hidden_dtype):
         timesteps_proj = self.time_proj(timestep)
         timesteps_emb = self.timestep_embedder(timesteps_proj.to(dtype=hidden_dtype))  # (N, D)
 
         if self.use_additional_conditions:
-            resolution = self.apply_condition(resolution, batch_size=batch_size, embedder=self.resolution_embedder)
-            aspect_ratio = self.apply_condition(
-                aspect_ratio, batch_size=batch_size, embedder=self.aspect_ratio_embedder
-            )
-            conditioning = timesteps_emb + torch.cat([resolution, aspect_ratio], dim=1)
+            resolution_emb = self.additional_condition_proj(resolution.flatten()).to(hidden_dtype)
+            resolution_emb = self.resolution_embedder(resolution_emb).reshape(batch_size, -1)
+            aspect_ratio_emb = self.additional_condition_proj(aspect_ratio.flatten()).to(hidden_dtype)
+            aspect_ratio_emb = self.aspect_ratio_embedder(aspect_ratio_emb).reshape(batch_size, -1)
+            conditioning = timesteps_emb + torch.cat([resolution_emb, aspect_ratio_emb], dim=1)
         else:
             conditioning = timesteps_emb
 
         return conditioning
 
 
-class CaptionProjection(nn.Module):
+class PixArtAlphaTextProjection(nn.Module):
     """
     Projects caption embeddings. Also handles dropout for classifier-free guidance.
 
@@ -796,9 +779,8 @@ class CaptionProjection(nn.Module):
         self.linear_1 = nn.Linear(in_features=in_features, out_features=hidden_size, bias=True)
         self.act_1 = nn.GELU(approximate="tanh")
         self.linear_2 = nn.Linear(in_features=hidden_size, out_features=hidden_size, bias=True)
-        self.register_buffer("y_embedding", nn.Parameter(torch.randn(num_tokens, in_features) / in_features**0.5))
 
-    def forward(self, caption, force_drop_ids=None):
+    def forward(self, caption):
         hidden_states = self.linear_1(caption)
         hidden_states = self.act_1(hidden_states)
         hidden_states = self.linear_2(hidden_states)

src/diffusers/models/normalization.py

@@ -13,14 +13,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import numbers
 from typing import Dict, Optional, Tuple
 
 import torch
 import torch.nn as nn
 import torch.nn.functional as F
 
+from ..utils import is_torch_version
 from .activations import get_activation
-from .embeddings import CombinedTimestepLabelEmbeddings, CombinedTimestepSizeEmbeddings
+from .embeddings import CombinedTimestepLabelEmbeddings, PixArtAlphaCombinedTimestepSizeEmbeddings
 
 
 class AdaLayerNorm(nn.Module):
@@ -91,7 +93,7 @@ class AdaLayerNormSingle(nn.Module):
     def __init__(self, embedding_dim: int, use_additional_conditions: bool = False):
         super().__init__()
 
-        self.emb = CombinedTimestepSizeEmbeddings(
+        self.emb = PixArtAlphaCombinedTimestepSizeEmbeddings(
             embedding_dim, size_emb_dim=embedding_dim // 3, use_additional_conditions=use_additional_conditions
         )
 
@@ -146,3 +148,107 @@ class AdaGroupNorm(nn.Module):
         x = F.group_norm(x, self.num_groups, eps=self.eps)
         x = x * (1 + scale) + shift
         return x
+
+
+class AdaLayerNormContinuous(nn.Module):
+    def __init__(
+        self,
+        embedding_dim: int,
+        conditioning_embedding_dim: int,
+        # NOTE: It is a bit weird that the norm layer can be configured to have scale and shift parameters
+        # because the output is immediately scaled and shifted by the projected conditioning embeddings.
+        # Note that AdaLayerNorm does not let the norm layer have scale and shift parameters.
+        # However, this is how it was implemented in the original code, and it's rather likely you should
+        # set `elementwise_affine` to False.
+        elementwise_affine=True,
+        eps=1e-5,
+        bias=True,
+        norm_type="layer_norm",
+    ):
+        super().__init__()
+        self.silu = nn.SiLU()
+        self.linear = nn.Linear(conditioning_embedding_dim, embedding_dim * 2, bias=bias)
+        if norm_type == "layer_norm":
+            self.norm = LayerNorm(embedding_dim, eps, elementwise_affine, bias)
+        elif norm_type == "rms_norm":
+            self.norm = RMSNorm(embedding_dim, eps, elementwise_affine)
+        else:
+            raise ValueError(f"unknown norm_type {norm_type}")
+
+    def forward(self, x: torch.Tensor, conditioning_embedding: torch.Tensor) -> torch.Tensor:
+        emb = self.linear(self.silu(conditioning_embedding))
+        scale, shift = torch.chunk(emb, 2, dim=1)
+        x = self.norm(x) * (1 + scale)[:, None, :] + shift[:, None, :]
+        return x
+
+
+if is_torch_version(">=", "2.1.0"):
+    LayerNorm = nn.LayerNorm
+else:
+    # Has optional bias parameter compared to torch layer norm
+    # TODO: replace with torch layernorm once min required torch version >= 2.1
+    class LayerNorm(nn.Module):
+        def __init__(self, dim, eps: float = 1e-5, elementwise_affine: bool = True, bias: bool = True):
+            super().__init__()
+
+            self.eps = eps
+
+            if isinstance(dim, numbers.Integral):
+                dim = (dim,)
+
+            self.dim = torch.Size(dim)
+
+            if elementwise_affine:
+                self.weight = nn.Parameter(torch.ones(dim))
+                self.bias = nn.Parameter(torch.zeros(dim)) if bias else None
+            else:
+                self.weight = None
+                self.bias = None
+
+        def forward(self, input):
+            return F.layer_norm(input, self.dim, self.weight, self.bias, self.eps)
+
+
+class RMSNorm(nn.Module):
+    def __init__(self, dim, eps: float, elementwise_affine: bool = True):
+        super().__init__()
+
+        self.eps = eps
+
+        if isinstance(dim, numbers.Integral):
+            dim = (dim,)
+
+        self.dim = torch.Size(dim)
+
+        if elementwise_affine:
+            self.weight = nn.Parameter(torch.ones(dim))
+        else:
+            self.weight = None
+
+    def forward(self, hidden_states):
+        input_dtype = hidden_states.dtype
+        variance = hidden_states.to(torch.float32).pow(2).mean(-1, keepdim=True)
+        hidden_states = hidden_states * torch.rsqrt(variance + self.eps)
+
+        if self.weight is not None:
+            # convert into half-precision if necessary
+            if self.weight.dtype in [torch.float16, torch.bfloat16]:
+                hidden_states = hidden_states.to(self.weight.dtype)
+            hidden_states = hidden_states * self.weight
+        else:
+            hidden_states = hidden_states.to(input_dtype)
+
+        return hidden_states
+
+
+class GlobalResponseNorm(nn.Module):
+    # Taken from https://github.com/facebookresearch/ConvNeXt-V2/blob/3608f67cc1dae164790c5d0aead7bf2d73d9719b/models/utils.py#L105
+    def __init__(self, dim):
+        super().__init__()
+        self.gamma = nn.Parameter(torch.zeros(1, 1, 1, dim))
+        self.beta = nn.Parameter(torch.zeros(1, 1, 1, dim))
+
+    def forward(self, x):
+        gx = torch.norm(x, p=2, dim=(1, 2), keepdim=True)
+        nx = gx / (gx.mean(dim=-1, keepdim=True) + 1e-6)
+        return self.gamma * (x * nx) + self.beta + x

src/diffusers/models/resnet.py

@@ -23,562 +23,23 @@ import torch.nn.functional as F
 from ..utils import USE_PEFT_BACKEND
 from .activations import get_activation
 from .attention_processor import SpatialNorm
+from .downsampling import (  # noqa
+    Downsample1D,
+    Downsample2D,
+    FirDownsample2D,
+    KDownsample2D,
+    downsample_2d,
+)
 from .lora import LoRACompatibleConv, LoRACompatibleLinear
 from .normalization import AdaGroupNorm
-
-
-class Upsample1D(nn.Module):
-    """A 1D upsampling layer with an optional convolution.
-
-    Parameters:
-        channels (`int`):
-            number of channels in the inputs and outputs.
-        use_conv (`bool`, default `False`):
-            option to use a convolution.
-        use_conv_transpose (`bool`, default `False`):
-            option to use a convolution transpose.
-        out_channels (`int`, optional):
-            number of output channels. Defaults to `channels`.
-        name (`str`, default `conv`):
-            name of the upsampling 1D layer.
-    """
-
-    def __init__(
-        self,
-        channels: int,
-        use_conv: bool = False,
-        use_conv_transpose: bool = False,
-        out_channels: Optional[int] = None,
-        name: str = "conv",
-    ):
-        super().__init__()
-        self.channels = channels
-        self.out_channels = out_channels or channels
-        self.use_conv = use_conv
-        self.use_conv_transpose = use_conv_transpose
-        self.name = name
-
-        self.conv = None
-        if use_conv_transpose:
-            self.conv = nn.ConvTranspose1d(channels, self.out_channels, 4, 2, 1)
-        elif use_conv:
-            self.conv = nn.Conv1d(self.channels, self.out_channels, 3, padding=1)
-
-    def forward(self, inputs: torch.Tensor) -> torch.Tensor:
-        assert inputs.shape[1] == self.channels
-        if self.use_conv_transpose:
-            return self.conv(inputs)
-
-        outputs = F.interpolate(inputs, scale_factor=2.0, mode="nearest")
-
-        if self.use_conv:
-            outputs = self.conv(outputs)
-
-        return outputs
-
-
-class Downsample1D(nn.Module):
-    """A 1D downsampling layer with an optional convolution.
-
-    Parameters:
-        channels (`int`):
-            number of channels in the inputs and outputs.
-        use_conv (`bool`, default `False`):
-            option to use a convolution.
-        out_channels (`int`, optional):
-            number of output channels. Defaults to `channels`.
-        padding (`int`, default `1`):
-            padding for the convolution.
-        name (`str`, default `conv`):
-            name of the downsampling 1D layer.
-    """
-
-    def __init__(
-        self,
-        channels: int,
-        use_conv: bool = False,
-        out_channels: Optional[int] = None,
-        padding: int = 1,
-        name: str = "conv",
-    ):
-        super().__init__()
-        self.channels = channels
-        self.out_channels = out_channels or channels
-        self.use_conv = use_conv
-        self.padding = padding
-        stride = 2
-        self.name = name
-
-        if use_conv:
-            self.conv = nn.Conv1d(self.channels, self.out_channels, 3, stride=stride, padding=padding)
-        else:
-            assert self.channels == self.out_channels
-            self.conv = nn.AvgPool1d(kernel_size=stride, stride=stride)
-
-    def forward(self, inputs: torch.Tensor) -> torch.Tensor:
-        assert inputs.shape[1] == self.channels
-        return self.conv(inputs)
-
-
-class Upsample2D(nn.Module):
-    """A 2D upsampling layer with an optional convolution.
-
-    Parameters:
-        channels (`int`):
-            number of channels in the inputs and outputs.
-        use_conv (`bool`, default `False`):
-            option to use a convolution.
-        use_conv_transpose (`bool`, default `False`):
-            option to use a convolution transpose.
-        out_channels (`int`, optional):
-            number of output channels. Defaults to `channels`.
-        name (`str`, default `conv`):
-            name of the upsampling 2D layer.
-    """
-
-    def __init__(
-        self,
-        channels: int,
-        use_conv: bool = False,
-        use_conv_transpose: bool = False,
-        out_channels: Optional[int] = None,
-        name: str = "conv",
-    ):
-        super().__init__()
-        self.channels = channels
-        self.out_channels = out_channels or channels
-        self.use_conv = use_conv
-        self.use_conv_transpose = use_conv_transpose
-        self.name = name
-        conv_cls = nn.Conv2d if USE_PEFT_BACKEND else LoRACompatibleConv
-
-        conv = None
-        if use_conv_transpose:
-            conv = nn.ConvTranspose2d(channels, self.out_channels, 4, 2, 1)
-        elif use_conv:
-            conv = conv_cls(self.channels, self.out_channels, 3, padding=1)
-
-        # TODO(Suraj, Patrick) - clean up after weight dicts are correctly renamed
-        if name == "conv":
-            self.conv = conv
-        else:
-            self.Conv2d_0 = conv
-
-    def forward(
-        self,
-        hidden_states: torch.FloatTensor,
-        output_size: Optional[int] = None,
-        scale: float = 1.0,
-    ) -> torch.FloatTensor:
-        assert hidden_states.shape[1] == self.channels
-
-        if self.use_conv_transpose:
-            return self.conv(hidden_states)
-
-        # Cast to float32 to as 'upsample_nearest2d_out_frame' op does not support bfloat16
-        # TODO(Suraj): Remove this cast once the issue is fixed in PyTorch
-        # https://github.com/pytorch/pytorch/issues/86679
-        dtype = hidden_states.dtype
-        if dtype == torch.bfloat16:
-            hidden_states = hidden_states.to(torch.float32)
-
-        # upsample_nearest_nhwc fails with large batch sizes. see https://github.com/huggingface/diffusers/issues/984
-        if hidden_states.shape[0] >= 64:
-            hidden_states = hidden_states.contiguous()
-
-        # if `output_size` is passed we force the interpolation output
-        # size and do not make use of `scale_factor=2`
-        if output_size is None:
-            hidden_states = F.interpolate(hidden_states, scale_factor=2.0, mode="nearest")
-        else:
-            hidden_states = F.interpolate(hidden_states, size=output_size, mode="nearest")
-
-        # If the input is bfloat16, we cast back to bfloat16
-        if dtype == torch.bfloat16:
-            hidden_states = hidden_states.to(dtype)
-
-        # TODO(Suraj, Patrick) - clean up after weight dicts are correctly renamed
-        if self.use_conv:
-            if self.name == "conv":
-                if isinstance(self.conv, LoRACompatibleConv) and not USE_PEFT_BACKEND:
-                    hidden_states = self.conv(hidden_states, scale)
-                else:
-                    hidden_states = self.conv(hidden_states)
-            else:
-                if isinstance(self.Conv2d_0, LoRACompatibleConv) and not USE_PEFT_BACKEND:
-                    hidden_states = self.Conv2d_0(hidden_states, scale)
-                else:
-                    hidden_states = self.Conv2d_0(hidden_states)
-
-        return hidden_states
-
-
-class Downsample2D(nn.Module):
-    """A 2D downsampling layer with an optional convolution.
-
-    Parameters:
-        channels (`int`):
-            number of channels in the inputs and outputs.
-        use_conv (`bool`, default `False`):
-            option to use a convolution.
-        out_channels (`int`, optional):
-            number of output channels. Defaults to `channels`.
-        padding (`int`, default `1`):
-            padding for the convolution.
-        name (`str`, default `conv`):
-            name of the downsampling 2D layer.
-    """
-
-    def __init__(
-        self,
-        channels: int,
-        use_conv: bool = False,
-        out_channels: Optional[int] = None,
-        padding: int = 1,
-        name: str = "conv",
-    ):
-        super().__init__()
-        self.channels = channels
-        self.out_channels = out_channels or channels
-        self.use_conv = use_conv
-        self.padding = padding
-        stride = 2
-        self.name = name
-        conv_cls = nn.Conv2d if USE_PEFT_BACKEND else LoRACompatibleConv
-
-        if use_conv:
-            conv = conv_cls(self.channels, self.out_channels, 3, stride=stride, padding=padding)
-        else:
-            assert self.channels == self.out_channels
-            conv = nn.AvgPool2d(kernel_size=stride, stride=stride)
-
-        # TODO(Suraj, Patrick) - clean up after weight dicts are correctly renamed
-        if name == "conv":
-            self.Conv2d_0 = conv
-            self.conv = conv
-        elif name == "Conv2d_0":
-            self.conv = conv
-        else:
-            self.conv = conv
-
-    def forward(self, hidden_states: torch.FloatTensor, scale: float = 1.0) -> torch.FloatTensor:
-        assert hidden_states.shape[1] == self.channels
-
-        if self.use_conv and self.padding == 0:
-            pad = (0, 1, 0, 1)
-            hidden_states = F.pad(hidden_states, pad, mode="constant", value=0)
-
-        assert hidden_states.shape[1] == self.channels
-
-        if not USE_PEFT_BACKEND:
-            if isinstance(self.conv, LoRACompatibleConv):
-                hidden_states = self.conv(hidden_states, scale)
-            else:
-                hidden_states = self.conv(hidden_states)
-        else:
-            hidden_states = self.conv(hidden_states)
-
-        return hidden_states
-
-
-class FirUpsample2D(nn.Module):
-    """A 2D FIR upsampling layer with an optional convolution.
-
-    Parameters:
-        channels (`int`, optional):
-            number of channels in the inputs and outputs.
-        use_conv (`bool`, default `False`):
-            option to use a convolution.
-        out_channels (`int`, optional):
-            number of output channels. Defaults to `channels`.
-        fir_kernel (`tuple`, default `(1, 3, 3, 1)`):
-            kernel for the FIR filter.
-    """
-
-    def __init__(
-        self,
-        channels: Optional[int] = None,
-        out_channels: Optional[int] = None,
-        use_conv: bool = False,
-        fir_kernel: Tuple[int, int, int, int] = (1, 3, 3, 1),
-    ):
-        super().__init__()
-        out_channels = out_channels if out_channels else channels
-        if use_conv:
-            self.Conv2d_0 = nn.Conv2d(channels, out_channels, kernel_size=3, stride=1, padding=1)
-        self.use_conv = use_conv
-        self.fir_kernel = fir_kernel
-        self.out_channels = out_channels
-
-    def _upsample_2d(
-        self,
-        hidden_states: torch.FloatTensor,
-        weight: Optional[torch.FloatTensor] = None,
-        kernel: Optional[torch.FloatTensor] = None,
-        factor: int = 2,
-        gain: float = 1,
-    ) -> torch.FloatTensor:
-        """Fused `upsample_2d()` followed by `Conv2d()`.
-
-        Padding is performed only once at the beginning, not between the operations. The fused op is considerably more
-        efficient than performing the same calculation using standard TensorFlow ops. It supports gradients of
-        arbitrary order.
-
-        Args:
-            hidden_states (`torch.FloatTensor`):
-                Input tensor of the shape `[N, C, H, W]` or `[N, H, W, C]`.
-            weight (`torch.FloatTensor`, *optional*):
-                Weight tensor of the shape `[filterH, filterW, inChannels, outChannels]`. Grouped convolution can be
-                performed by `inChannels = x.shape[0] // numGroups`.
-            kernel (`torch.FloatTensor`, *optional*):
-                FIR filter of the shape `[firH, firW]` or `[firN]` (separable). The default is `[1] * factor`, which
-                corresponds to nearest-neighbor upsampling.
-            factor (`int`, *optional*): Integer upsampling factor (default: 2).
-            gain (`float`, *optional*): Scaling factor for signal magnitude (default: 1.0).
-
-        Returns:
-            output (`torch.FloatTensor`):
-                Tensor of the shape `[N, C, H * factor, W * factor]` or `[N, H * factor, W * factor, C]`, and same
-                datatype as `hidden_states`.
-        """
-
-        assert isinstance(factor, int) and factor >= 1
-
-        # Setup filter kernel.
-        if kernel is None:
-            kernel = [1] * factor
-
-        # setup kernel
-        kernel = torch.tensor(kernel, dtype=torch.float32)
-        if kernel.ndim == 1:
-            kernel = torch.outer(kernel, kernel)
-        kernel /= torch.sum(kernel)
-
-        kernel = kernel * (gain * (factor**2))
-
-        if self.use_conv:
-            convH = weight.shape[2]
-            convW = weight.shape[3]
-            inC = weight.shape[1]
-
-            pad_value = (kernel.shape[0] - factor) - (convW - 1)
-
-            stride = (factor, factor)
-            # Determine data dimensions.
-            output_shape = (
-                (hidden_states.shape[2] - 1) * factor + convH,
-                (hidden_states.shape[3] - 1) * factor + convW,
-            )
-            output_padding = (
-                output_shape[0] - (hidden_states.shape[2] - 1) * stride[0] - convH,
-                output_shape[1] - (hidden_states.shape[3] - 1) * stride[1] - convW,
-            )
-            assert output_padding[0] >= 0 and output_padding[1] >= 0
-            num_groups = hidden_states.shape[1] // inC
-
-            # Transpose weights.
-            weight = torch.reshape(weight, (num_groups, -1, inC, convH, convW))
-            weight = torch.flip(weight, dims=[3, 4]).permute(0, 2, 1, 3, 4)
-            weight = torch.reshape(weight, (num_groups * inC, -1, convH, convW))
-
-            inverse_conv = F.conv_transpose2d(
-                hidden_states,
-                weight,
-                stride=stride,
-                output_padding=output_padding,
-                padding=0,
-            )
-
-            output = upfirdn2d_native(
-                inverse_conv,
-                torch.tensor(kernel, device=inverse_conv.device),
-                pad=((pad_value + 1) // 2 + factor - 1, pad_value // 2 + 1),
-            )
-        else:
-            pad_value = kernel.shape[0] - factor
-            output = upfirdn2d_native(
-                hidden_states,
-                torch.tensor(kernel, device=hidden_states.device),
-                up=factor,
-                pad=((pad_value + 1) // 2 + factor - 1, pad_value // 2),
-            )
-
-        return output
-
-    def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
-        if self.use_conv:
-            height = self._upsample_2d(hidden_states, self.Conv2d_0.weight, kernel=self.fir_kernel)
-            height = height + self.Conv2d_0.bias.reshape(1, -1, 1, 1)
-        else:
-            height = self._upsample_2d(hidden_states, kernel=self.fir_kernel, factor=2)
-
-        return height
-
-
-class FirDownsample2D(nn.Module):
-    """A 2D FIR downsampling layer with an optional convolution.
-
-    Parameters:
-        channels (`int`):
-            number of channels in the inputs and outputs.
-        use_conv (`bool`, default `False`):
-            option to use a convolution.
-        out_channels (`int`, optional):
-            number of output channels. Defaults to `channels`.
-        fir_kernel (`tuple`, default `(1, 3, 3, 1)`):
-            kernel for the FIR filter.
-    """
-
-    def __init__(
-        self,
-        channels: Optional[int] = None,
-        out_channels: Optional[int] = None,
-        use_conv: bool = False,
-        fir_kernel: Tuple[int, int, int, int] = (1, 3, 3, 1),
-    ):
-        super().__init__()
-        out_channels = out_channels if out_channels else channels
-        if use_conv:
-            self.Conv2d_0 = nn.Conv2d(channels, out_channels, kernel_size=3, stride=1, padding=1)
-        self.fir_kernel = fir_kernel
-        self.use_conv = use_conv
-        self.out_channels = out_channels
-
-    def _downsample_2d(
-        self,
-        hidden_states: torch.FloatTensor,
-        weight: Optional[torch.FloatTensor] = None,
-        kernel: Optional[torch.FloatTensor] = None,
-        factor: int = 2,
-        gain: float = 1,
-    ) -> torch.FloatTensor:
-        """Fused `Conv2d()` followed by `downsample_2d()`.
-        Padding is performed only once at the beginning, not between the operations. The fused op is considerably more
-        efficient than performing the same calculation using standard TensorFlow ops. It supports gradients of
-        arbitrary order.
-
-        Args:
-            hidden_states (`torch.FloatTensor`):
-                Input tensor of the shape `[N, C, H, W]` or `[N, H, W, C]`.
-            weight (`torch.FloatTensor`, *optional*):
-                Weight tensor of the shape `[filterH, filterW, inChannels, outChannels]`. Grouped convolution can be
-                performed by `inChannels = x.shape[0] // numGroups`.
-            kernel (`torch.FloatTensor`, *optional*):
-                FIR filter of the shape `[firH, firW]` or `[firN]` (separable). The default is `[1] * factor`, which
-                corresponds to average pooling.
-            factor (`int`, *optional*, default to `2`):
-                Integer downsampling factor.
-            gain (`float`, *optional*, default to `1.0`):
-                Scaling factor for signal magnitude.
-
-        Returns:
-            output (`torch.FloatTensor`):
-                Tensor of the shape `[N, C, H // factor, W // factor]` or `[N, H // factor, W // factor, C]`, and same
-                datatype as `x`.
-        """
-
-        assert isinstance(factor, int) and factor >= 1
-        if kernel is None:
-            kernel = [1] * factor
-
-        # setup kernel
-        kernel = torch.tensor(kernel, dtype=torch.float32)
-        if kernel.ndim == 1:
-            kernel = torch.outer(kernel, kernel)
-        kernel /= torch.sum(kernel)
-
-        kernel = kernel * gain
-
-        if self.use_conv:
-            _, _, convH, convW = weight.shape
-            pad_value = (kernel.shape[0] - factor) + (convW - 1)
-            stride_value = [factor, factor]
-            upfirdn_input = upfirdn2d_native(
-                hidden_states,
-                torch.tensor(kernel, device=hidden_states.device),
-                pad=((pad_value + 1) // 2, pad_value // 2),
-            )
-            output = F.conv2d(upfirdn_input, weight, stride=stride_value, padding=0)
-        else:
-            pad_value = kernel.shape[0] - factor
-            output = upfirdn2d_native(
-                hidden_states,
-                torch.tensor(kernel, device=hidden_states.device),
-                down=factor,
-                pad=((pad_value + 1) // 2, pad_value // 2),
-            )
-
-        return output
-
-    def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
-        if self.use_conv:
-            downsample_input = self._downsample_2d(hidden_states, weight=self.Conv2d_0.weight, kernel=self.fir_kernel)
-            hidden_states = downsample_input + self.Conv2d_0.bias.reshape(1, -1, 1, 1)
-        else:
-            hidden_states = self._downsample_2d(hidden_states, kernel=self.fir_kernel, factor=2)
-
-        return hidden_states
-
-
-# downsample/upsample layer used in k-upscaler, might be able to use FirDownsample2D/DirUpsample2D instead
-class KDownsample2D(nn.Module):
-    r"""A 2D K-downsampling layer.
-
-    Parameters:
-        pad_mode (`str`, *optional*, default to `"reflect"`): the padding mode to use.
-    """
-
-    def __init__(self, pad_mode: str = "reflect"):
-        super().__init__()
-        self.pad_mode = pad_mode
-        kernel_1d = torch.tensor([[1 / 8, 3 / 8, 3 / 8, 1 / 8]])
-        self.pad = kernel_1d.shape[1] // 2 - 1
-        self.register_buffer("kernel", kernel_1d.T @ kernel_1d, persistent=False)
-
-    def forward(self, inputs: torch.Tensor) -> torch.Tensor:
-        inputs = F.pad(inputs, (self.pad,) * 4, self.pad_mode)
-        weight = inputs.new_zeros(
-            [
-                inputs.shape[1],
-                inputs.shape[1],
-                self.kernel.shape[0],
-                self.kernel.shape[1],
-            ]
-        )
-        indices = torch.arange(inputs.shape[1], device=inputs.device)
-        kernel = self.kernel.to(weight)[None, :].expand(inputs.shape[1], -1, -1)
-        weight[indices, indices] = kernel
-        return F.conv2d(inputs, weight, stride=2)
-
-
-class KUpsample2D(nn.Module):
-    r"""A 2D K-upsampling layer.
-
-    Parameters:
-        pad_mode (`str`, *optional*, default to `"reflect"`): the padding mode to use.
-    """
-
-    def __init__(self, pad_mode: str = "reflect"):
-        super().__init__()
-        self.pad_mode = pad_mode
-        kernel_1d = torch.tensor([[1 / 8, 3 / 8, 3 / 8, 1 / 8]]) * 2
-        self.pad = kernel_1d.shape[1] // 2 - 1
-        self.register_buffer("kernel", kernel_1d.T @ kernel_1d, persistent=False)
-
-    def forward(self, inputs: torch.Tensor) -> torch.Tensor:
-        inputs = F.pad(inputs, ((self.pad + 1) // 2,) * 4, self.pad_mode)
-        weight = inputs.new_zeros(
-            [
-                inputs.shape[1],
-                inputs.shape[1],
-                self.kernel.shape[0],
-                self.kernel.shape[1],
-            ]
-        )
-        indices = torch.arange(inputs.shape[1], device=inputs.device)
-        kernel = self.kernel.to(weight)[None, :].expand(inputs.shape[1], -1, -1)
-        weight[indices, indices] = kernel
-        return F.conv_transpose2d(inputs, weight, stride=2, padding=self.pad * 2 + 1)
+from .upsampling import (  # noqa
+    FirUpsample2D,
+    KUpsample2D,
+    Upsample1D,
+    Upsample2D,
+    upfirdn2d_native,
+    upsample_2d,
+)
 
 
 class ResnetBlock2D(nn.Module):
@@ -894,151 +355,6 @@ class ResidualTemporalBlock1D(nn.Module):
         return out + self.residual_conv(inputs)
 
 
-def upsample_2d(
-    hidden_states: torch.FloatTensor,
-    kernel: Optional[torch.FloatTensor] = None,
-    factor: int = 2,
-    gain: float = 1,
-) -> torch.FloatTensor:
-    r"""Upsample2D a batch of 2D images with the given filter.
-    Accepts a batch of 2D images of the shape `[N, C, H, W]` or `[N, H, W, C]` and upsamples each image with the given
-    filter. The filter is normalized so that if the input pixels are constant, they will be scaled by the specified
-    `gain`. Pixels outside the image are assumed to be zero, and the filter is padded with zeros so that its shape is
-    a: multiple of the upsampling factor.
-
-    Args:
-        hidden_states (`torch.FloatTensor`):
-            Input tensor of the shape `[N, C, H, W]` or `[N, H, W, C]`.
-        kernel (`torch.FloatTensor`, *optional*):
-            FIR filter of the shape `[firH, firW]` or `[firN]` (separable). The default is `[1] * factor`, which
-            corresponds to nearest-neighbor upsampling.
-        factor (`int`, *optional*, default to `2`):
-            Integer upsampling factor.
-        gain (`float`, *optional*, default to `1.0`):
-            Scaling factor for signal magnitude (default: 1.0).
-
-    Returns:
-        output (`torch.FloatTensor`):
-            Tensor of the shape `[N, C, H * factor, W * factor]`
-    """
-    assert isinstance(factor, int) and factor >= 1
-    if kernel is None:
-        kernel = [1] * factor
-
-    kernel = torch.tensor(kernel, dtype=torch.float32)
-    if kernel.ndim == 1:
-        kernel = torch.outer(kernel, kernel)
-    kernel /= torch.sum(kernel)
-
-    kernel = kernel * (gain * (factor**2))
-    pad_value = kernel.shape[0] - factor
-    output = upfirdn2d_native(
-        hidden_states,
-        kernel.to(device=hidden_states.device),
-        up=factor,
-        pad=((pad_value + 1) // 2 + factor - 1, pad_value // 2),
-    )
-    return output
-
-
-def downsample_2d(
-    hidden_states: torch.FloatTensor,
-    kernel: Optional[torch.FloatTensor] = None,
-    factor: int = 2,
-    gain: float = 1,
-) -> torch.FloatTensor:
-    r"""Downsample2D a batch of 2D images with the given filter.
-    Accepts a batch of 2D images of the shape `[N, C, H, W]` or `[N, H, W, C]` and downsamples each image with the
-    given filter. The filter is normalized so that if the input pixels are constant, they will be scaled by the
-    specified `gain`. Pixels outside the image are assumed to be zero, and the filter is padded with zeros so that its
-    shape is a multiple of the downsampling factor.
-
-    Args:
-        hidden_states (`torch.FloatTensor`)
-            Input tensor of the shape `[N, C, H, W]` or `[N, H, W, C]`.
-        kernel (`torch.FloatTensor`, *optional*):
-            FIR filter of the shape `[firH, firW]` or `[firN]` (separable). The default is `[1] * factor`, which
-            corresponds to average pooling.
-        factor (`int`, *optional*, default to `2`):
-            Integer downsampling factor.
-        gain (`float`, *optional*, default to `1.0`):
-            Scaling factor for signal magnitude.
-
-    Returns:
-        output (`torch.FloatTensor`):
-            Tensor of the shape `[N, C, H // factor, W // factor]`
-    """
-
-    assert isinstance(factor, int) and factor >= 1
-    if kernel is None:
-        kernel = [1] * factor
-
-    kernel = torch.tensor(kernel, dtype=torch.float32)
-    if kernel.ndim == 1:
-        kernel = torch.outer(kernel, kernel)
-    kernel /= torch.sum(kernel)
-
-    kernel = kernel * gain
-    pad_value = kernel.shape[0] - factor
-    output = upfirdn2d_native(
-        hidden_states,
-        kernel.to(device=hidden_states.device),
-        down=factor,
-        pad=((pad_value + 1) // 2, pad_value // 2),
-    )
-    return output
-
-
-def upfirdn2d_native(
-    tensor: torch.Tensor,
-    kernel: torch.Tensor,
-    up: int = 1,
-    down: int = 1,
-    pad: Tuple[int, int] = (0, 0),
-) -> torch.Tensor:
-    up_x = up_y = up
-    down_x = down_y = down
-    pad_x0 = pad_y0 = pad[0]
-    pad_x1 = pad_y1 = pad[1]
-
-    _, channel, in_h, in_w = tensor.shape
-    tensor = tensor.reshape(-1, in_h, in_w, 1)
-
-    _, in_h, in_w, minor = tensor.shape
-    kernel_h, kernel_w = kernel.shape
-
-    out = tensor.view(-1, in_h, 1, in_w, 1, minor)
-    out = F.pad(out, [0, 0, 0, up_x - 1, 0, 0, 0, up_y - 1])
-    out = out.view(-1, in_h * up_y, in_w * up_x, minor)
-
-    out = F.pad(out, [0, 0, max(pad_x0, 0), max(pad_x1, 0), max(pad_y0, 0), max(pad_y1, 0)])
-    out = out.to(tensor.device)  # Move back to mps if necessary
-    out = out[
-        :,
-        max(-pad_y0, 0) : out.shape[1] - max(-pad_y1, 0),
-        max(-pad_x0, 0) : out.shape[2] - max(-pad_x1, 0),
-        :,
-    ]
-
-    out = out.permute(0, 3, 1, 2)
-    out = out.reshape([-1, 1, in_h * up_y + pad_y0 + pad_y1, in_w * up_x + pad_x0 + pad_x1])
-    w = torch.flip(kernel, [0, 1]).view(1, 1, kernel_h, kernel_w)
-    out = F.conv2d(out, w)
-    out = out.reshape(
-        -1,
-        minor,
-        in_h * up_y + pad_y0 + pad_y1 - kernel_h + 1,
-        in_w * up_x + pad_x0 + pad_x1 - kernel_w + 1,
-    )
-    out = out.permute(0, 2, 3, 1)
-    out = out[:, ::down_y, ::down_x, :]
-
-    out_h = (in_h * up_y + pad_y0 + pad_y1 - kernel_h) // down_y + 1
-    out_w = (in_w * up_x + pad_x0 + pad_x1 - kernel_w) // down_x + 1
-
-    return out.view(-1, channel, out_h, out_w)
-
-
 class TemporalConvLayer(nn.Module):
     """
     Temporal convolutional layer that can be used for video (sequence of images) input Code mostly copied from:

src/diffusers/models/transformer_2d.py

@@ -22,7 +22,7 @@ from ..configuration_utils import ConfigMixin, register_to_config
 from ..models.embeddings import ImagePositionalEmbeddings
 from ..utils import USE_PEFT_BACKEND, BaseOutput, deprecate, is_torch_version
 from .attention import BasicTransformerBlock
-from .embeddings import CaptionProjection, PatchEmbed
+from .embeddings import PatchEmbed, PixArtAlphaTextProjection
 from .lora import LoRACompatibleConv, LoRACompatibleLinear
 from .modeling_utils import ModelMixin
 from .normalization import AdaLayerNormSingle
@@ -235,7 +235,7 @@ class Transformer2DModel(ModelMixin, ConfigMixin):
 
         self.caption_projection = None
         if caption_channels is not None:
-            self.caption_projection = CaptionProjection(in_features=caption_channels, hidden_size=inner_dim)
+            self.caption_projection = PixArtAlphaTextProjection(in_features=caption_channels, hidden_size=inner_dim)
 
         self.gradient_checkpointing = False
 

src/diffusers/models/upsampling.py

@@ -0,0 +1,454 @@
+# Copyright 2023 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import Optional, Tuple
+
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+
+from ..utils import USE_PEFT_BACKEND
+from .lora import LoRACompatibleConv
+from .normalization import RMSNorm
+
+
+class Upsample1D(nn.Module):
+    """A 1D upsampling layer with an optional convolution.
+
+    Parameters:
+        channels (`int`):
+            number of channels in the inputs and outputs.
+        use_conv (`bool`, default `False`):
+            option to use a convolution.
+        use_conv_transpose (`bool`, default `False`):
+            option to use a convolution transpose.
+        out_channels (`int`, optional):
+            number of output channels. Defaults to `channels`.
+        name (`str`, default `conv`):
+            name of the upsampling 1D layer.
+    """
+
+    def __init__(
+        self,
+        channels: int,
+        use_conv: bool = False,
+        use_conv_transpose: bool = False,
+        out_channels: Optional[int] = None,
+        name: str = "conv",
+    ):
+        super().__init__()
+        self.channels = channels
+        self.out_channels = out_channels or channels
+        self.use_conv = use_conv
+        self.use_conv_transpose = use_conv_transpose
+        self.name = name
+
+        self.conv = None
+        if use_conv_transpose:
+            self.conv = nn.ConvTranspose1d(channels, self.out_channels, 4, 2, 1)
+        elif use_conv:
+            self.conv = nn.Conv1d(self.channels, self.out_channels, 3, padding=1)
+
+    def forward(self, inputs: torch.Tensor) -> torch.Tensor:
+        assert inputs.shape[1] == self.channels
+        if self.use_conv_transpose:
+            return self.conv(inputs)
+
+        outputs = F.interpolate(inputs, scale_factor=2.0, mode="nearest")
+
+        if self.use_conv:
+            outputs = self.conv(outputs)
+
+        return outputs
+
+
+class Upsample2D(nn.Module):
+    """A 2D upsampling layer with an optional convolution.
+
+    Parameters:
+        channels (`int`):
+            number of channels in the inputs and outputs.
+        use_conv (`bool`, default `False`):
+            option to use a convolution.
+        use_conv_transpose (`bool`, default `False`):
+            option to use a convolution transpose.
+        out_channels (`int`, optional):
+            number of output channels. Defaults to `channels`.
+        name (`str`, default `conv`):
+            name of the upsampling 2D layer.
+    """
+
+    def __init__(
+        self,
+        channels: int,
+        use_conv: bool = False,
+        use_conv_transpose: bool = False,
+        out_channels: Optional[int] = None,
+        name: str = "conv",
+        kernel_size: Optional[int] = None,
+        padding=1,
+        norm_type=None,
+        eps=None,
+        elementwise_affine=None,
+        bias=True,
+        interpolate=True,
+    ):
+        super().__init__()
+        self.channels = channels
+        self.out_channels = out_channels or channels
+        self.use_conv = use_conv
+        self.use_conv_transpose = use_conv_transpose
+        self.name = name
+        self.interpolate = interpolate
+        conv_cls = nn.Conv2d if USE_PEFT_BACKEND else LoRACompatibleConv
+
+        if norm_type == "ln_norm":
+            self.norm = nn.LayerNorm(channels, eps, elementwise_affine)
+        elif norm_type == "rms_norm":
+            self.norm = RMSNorm(channels, eps, elementwise_affine)
+        elif norm_type is None:
+            self.norm = None
+        else:
+            raise ValueError(f"unknown norm_type: {norm_type}")
+
+        conv = None
+        if use_conv_transpose:
+            if kernel_size is None:
+                kernel_size = 4
+            conv = nn.ConvTranspose2d(
+                channels, self.out_channels, kernel_size=kernel_size, stride=2, padding=padding, bias=bias
+            )
+        elif use_conv:
+            if kernel_size is None:
+                kernel_size = 3
+            conv = conv_cls(self.channels, self.out_channels, kernel_size=kernel_size, padding=padding, bias=bias)
+
+        # TODO(Suraj, Patrick) - clean up after weight dicts are correctly renamed
+        if name == "conv":
+            self.conv = conv
+        else:
+            self.Conv2d_0 = conv
+
+    def forward(
+        self,
+        hidden_states: torch.FloatTensor,
+        output_size: Optional[int] = None,
+        scale: float = 1.0,
+    ) -> torch.FloatTensor:
+        assert hidden_states.shape[1] == self.channels
+
+        if self.norm is not None:
+            hidden_states = self.norm(hidden_states.permute(0, 2, 3, 1)).permute(0, 3, 1, 2)
+
+        if self.use_conv_transpose:
+            return self.conv(hidden_states)
+
+        # Cast to float32 to as 'upsample_nearest2d_out_frame' op does not support bfloat16
+        # TODO(Suraj): Remove this cast once the issue is fixed in PyTorch
+        # https://github.com/pytorch/pytorch/issues/86679
+        dtype = hidden_states.dtype
+        if dtype == torch.bfloat16:
+            hidden_states = hidden_states.to(torch.float32)
+
+        # upsample_nearest_nhwc fails with large batch sizes. see https://github.com/huggingface/diffusers/issues/984
+        if hidden_states.shape[0] >= 64:
+            hidden_states = hidden_states.contiguous()
+
+        # if `output_size` is passed we force the interpolation output
+        # size and do not make use of `scale_factor=2`
+        if self.interpolate:
+            if output_size is None:
+                hidden_states = F.interpolate(hidden_states, scale_factor=2.0, mode="nearest")
+            else:
+                hidden_states = F.interpolate(hidden_states, size=output_size, mode="nearest")
+
+        # If the input is bfloat16, we cast back to bfloat16
+        if dtype == torch.bfloat16:
+            hidden_states = hidden_states.to(dtype)
+
+        # TODO(Suraj, Patrick) - clean up after weight dicts are correctly renamed
+        if self.use_conv:
+            if self.name == "conv":
+                if isinstance(self.conv, LoRACompatibleConv) and not USE_PEFT_BACKEND:
+                    hidden_states = self.conv(hidden_states, scale)
+                else:
+                    hidden_states = self.conv(hidden_states)
+            else:
+                if isinstance(self.Conv2d_0, LoRACompatibleConv) and not USE_PEFT_BACKEND:
+                    hidden_states = self.Conv2d_0(hidden_states, scale)
+                else:
+                    hidden_states = self.Conv2d_0(hidden_states)
+
+        return hidden_states
+
+
+class FirUpsample2D(nn.Module):
+    """A 2D FIR upsampling layer with an optional convolution.
+
+    Parameters:
+        channels (`int`, optional):
+            number of channels in the inputs and outputs.
+        use_conv (`bool`, default `False`):
+            option to use a convolution.
+        out_channels (`int`, optional):
+            number of output channels. Defaults to `channels`.
+        fir_kernel (`tuple`, default `(1, 3, 3, 1)`):
+            kernel for the FIR filter.
+    """
+
+    def __init__(
+        self,
+        channels: Optional[int] = None,
+        out_channels: Optional[int] = None,
+        use_conv: bool = False,
+        fir_kernel: Tuple[int, int, int, int] = (1, 3, 3, 1),
+    ):
+        super().__init__()
+        out_channels = out_channels if out_channels else channels
+        if use_conv:
+            self.Conv2d_0 = nn.Conv2d(channels, out_channels, kernel_size=3, stride=1, padding=1)
+        self.use_conv = use_conv
+        self.fir_kernel = fir_kernel
+        self.out_channels = out_channels
+
+    def _upsample_2d(
+        self,
+        hidden_states: torch.FloatTensor,
+        weight: Optional[torch.FloatTensor] = None,
+        kernel: Optional[torch.FloatTensor] = None,
+        factor: int = 2,
+        gain: float = 1,
+    ) -> torch.FloatTensor:
+        """Fused `upsample_2d()` followed by `Conv2d()`.
+
+        Padding is performed only once at the beginning, not between the operations. The fused op is considerably more
+        efficient than performing the same calculation using standard TensorFlow ops. It supports gradients of
+        arbitrary order.
+
+        Args:
+            hidden_states (`torch.FloatTensor`):
+                Input tensor of the shape `[N, C, H, W]` or `[N, H, W, C]`.
+            weight (`torch.FloatTensor`, *optional*):
+                Weight tensor of the shape `[filterH, filterW, inChannels, outChannels]`. Grouped convolution can be
+                performed by `inChannels = x.shape[0] // numGroups`.
+            kernel (`torch.FloatTensor`, *optional*):
+                FIR filter of the shape `[firH, firW]` or `[firN]` (separable). The default is `[1] * factor`, which
+                corresponds to nearest-neighbor upsampling.
+            factor (`int`, *optional*): Integer upsampling factor (default: 2).
+            gain (`float`, *optional*): Scaling factor for signal magnitude (default: 1.0).
+
+        Returns:
+            output (`torch.FloatTensor`):
+                Tensor of the shape `[N, C, H * factor, W * factor]` or `[N, H * factor, W * factor, C]`, and same
+                datatype as `hidden_states`.
+        """
+
+        assert isinstance(factor, int) and factor >= 1
+
+        # Setup filter kernel.
+        if kernel is None:
+            kernel = [1] * factor
+
+        # setup kernel
+        kernel = torch.tensor(kernel, dtype=torch.float32)
+        if kernel.ndim == 1:
+            kernel = torch.outer(kernel, kernel)
+        kernel /= torch.sum(kernel)
+
+        kernel = kernel * (gain * (factor**2))
+
+        if self.use_conv:
+            convH = weight.shape[2]
+            convW = weight.shape[3]
+            inC = weight.shape[1]
+
+            pad_value = (kernel.shape[0] - factor) - (convW - 1)
+
+            stride = (factor, factor)
+            # Determine data dimensions.
+            output_shape = (
+                (hidden_states.shape[2] - 1) * factor + convH,
+                (hidden_states.shape[3] - 1) * factor + convW,
+            )
+            output_padding = (
+                output_shape[0] - (hidden_states.shape[2] - 1) * stride[0] - convH,
+                output_shape[1] - (hidden_states.shape[3] - 1) * stride[1] - convW,
+            )
+            assert output_padding[0] >= 0 and output_padding[1] >= 0
+            num_groups = hidden_states.shape[1] // inC
+
+            # Transpose weights.
+            weight = torch.reshape(weight, (num_groups, -1, inC, convH, convW))
+            weight = torch.flip(weight, dims=[3, 4]).permute(0, 2, 1, 3, 4)
+            weight = torch.reshape(weight, (num_groups * inC, -1, convH, convW))
+
+            inverse_conv = F.conv_transpose2d(
+                hidden_states,
+                weight,
+                stride=stride,
+                output_padding=output_padding,
+                padding=0,
+            )
+
+            output = upfirdn2d_native(
+                inverse_conv,
+                torch.tensor(kernel, device=inverse_conv.device),
+                pad=((pad_value + 1) // 2 + factor - 1, pad_value // 2 + 1),
+            )
+        else:
+            pad_value = kernel.shape[0] - factor
+            output = upfirdn2d_native(
+                hidden_states,
+                torch.tensor(kernel, device=hidden_states.device),
+                up=factor,
+                pad=((pad_value + 1) // 2 + factor - 1, pad_value // 2),
+            )
+
+        return output
+
+    def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
+        if self.use_conv:
+            height = self._upsample_2d(hidden_states, self.Conv2d_0.weight, kernel=self.fir_kernel)
+            height = height + self.Conv2d_0.bias.reshape(1, -1, 1, 1)
+        else:
+            height = self._upsample_2d(hidden_states, kernel=self.fir_kernel, factor=2)
+
+        return height
+
+
+class KUpsample2D(nn.Module):
+    r"""A 2D K-upsampling layer.
+
+    Parameters:
+        pad_mode (`str`, *optional*, default to `"reflect"`): the padding mode to use.
+    """
+
+    def __init__(self, pad_mode: str = "reflect"):
+        super().__init__()
+        self.pad_mode = pad_mode
+        kernel_1d = torch.tensor([[1 / 8, 3 / 8, 3 / 8, 1 / 8]]) * 2
+        self.pad = kernel_1d.shape[1] // 2 - 1
+        self.register_buffer("kernel", kernel_1d.T @ kernel_1d, persistent=False)
+
+    def forward(self, inputs: torch.Tensor) -> torch.Tensor:
+        inputs = F.pad(inputs, ((self.pad + 1) // 2,) * 4, self.pad_mode)
+        weight = inputs.new_zeros(
+            [
+                inputs.shape[1],
+                inputs.shape[1],
+                self.kernel.shape[0],
+                self.kernel.shape[1],
+            ]
+        )
+        indices = torch.arange(inputs.shape[1], device=inputs.device)
+        kernel = self.kernel.to(weight)[None, :].expand(inputs.shape[1], -1, -1)
+        weight[indices, indices] = kernel
+        return F.conv_transpose2d(inputs, weight, stride=2, padding=self.pad * 2 + 1)
+
+
+def upfirdn2d_native(
+    tensor: torch.Tensor,
+    kernel: torch.Tensor,
+    up: int = 1,
+    down: int = 1,
+    pad: Tuple[int, int] = (0, 0),
+) -> torch.Tensor:
+    up_x = up_y = up
+    down_x = down_y = down
+    pad_x0 = pad_y0 = pad[0]
+    pad_x1 = pad_y1 = pad[1]
+
+    _, channel, in_h, in_w = tensor.shape
+    tensor = tensor.reshape(-1, in_h, in_w, 1)
+
+    _, in_h, in_w, minor = tensor.shape
+    kernel_h, kernel_w = kernel.shape
+
+    out = tensor.view(-1, in_h, 1, in_w, 1, minor)
+    out = F.pad(out, [0, 0, 0, up_x - 1, 0, 0, 0, up_y - 1])
+    out = out.view(-1, in_h * up_y, in_w * up_x, minor)
+
+    out = F.pad(out, [0, 0, max(pad_x0, 0), max(pad_x1, 0), max(pad_y0, 0), max(pad_y1, 0)])
+    out = out.to(tensor.device)  # Move back to mps if necessary
+    out = out[
+        :,
+        max(-pad_y0, 0) : out.shape[1] - max(-pad_y1, 0),
+        max(-pad_x0, 0) : out.shape[2] - max(-pad_x1, 0),
+        :,
+    ]
+
+    out = out.permute(0, 3, 1, 2)
+    out = out.reshape([-1, 1, in_h * up_y + pad_y0 + pad_y1, in_w * up_x + pad_x0 + pad_x1])
+    w = torch.flip(kernel, [0, 1]).view(1, 1, kernel_h, kernel_w)
+    out = F.conv2d(out, w)
+    out = out.reshape(
+        -1,
+        minor,
+        in_h * up_y + pad_y0 + pad_y1 - kernel_h + 1,
+        in_w * up_x + pad_x0 + pad_x1 - kernel_w + 1,
+    )
+    out = out.permute(0, 2, 3, 1)
+    out = out[:, ::down_y, ::down_x, :]
+
+    out_h = (in_h * up_y + pad_y0 + pad_y1 - kernel_h) // down_y + 1
+    out_w = (in_w * up_x + pad_x0 + pad_x1 - kernel_w) // down_x + 1
+
+    return out.view(-1, channel, out_h, out_w)
+
+
+def upsample_2d(
+    hidden_states: torch.FloatTensor,
+    kernel: Optional[torch.FloatTensor] = None,
+    factor: int = 2,
+    gain: float = 1,
+) -> torch.FloatTensor:
+    r"""Upsample2D a batch of 2D images with the given filter.
+    Accepts a batch of 2D images of the shape `[N, C, H, W]` or `[N, H, W, C]` and upsamples each image with the given
+    filter. The filter is normalized so that if the input pixels are constant, they will be scaled by the specified
+    `gain`. Pixels outside the image are assumed to be zero, and the filter is padded with zeros so that its shape is
+    a: multiple of the upsampling factor.
+
+    Args:
+        hidden_states (`torch.FloatTensor`):
+            Input tensor of the shape `[N, C, H, W]` or `[N, H, W, C]`.
+        kernel (`torch.FloatTensor`, *optional*):
+            FIR filter of the shape `[firH, firW]` or `[firN]` (separable). The default is `[1] * factor`, which
+            corresponds to nearest-neighbor upsampling.
+        factor (`int`, *optional*, default to `2`):
+            Integer upsampling factor.
+        gain (`float`, *optional*, default to `1.0`):
+            Scaling factor for signal magnitude (default: 1.0).
+
+    Returns:
+        output (`torch.FloatTensor`):
+            Tensor of the shape `[N, C, H * factor, W * factor]`
+    """
+    assert isinstance(factor, int) and factor >= 1
+    if kernel is None:
+        kernel = [1] * factor
+
+    kernel = torch.tensor(kernel, dtype=torch.float32)
+    if kernel.ndim == 1:
+        kernel = torch.outer(kernel, kernel)
+    kernel /= torch.sum(kernel)
+
+    kernel = kernel * (gain * (factor**2))
+    pad_value = kernel.shape[0] - factor
+    output = upfirdn2d_native(
+        hidden_states,
+        kernel.to(device=hidden_states.device),
+        up=factor,
+        pad=((pad_value + 1) // 2 + factor - 1, pad_value // 2),
+    )
+    return output

src/diffusers/models/uvit_2d.py

@@ -0,0 +1,471 @@
+# coding=utf-8
+# Copyright 2023 The HuggingFace Inc. team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import Dict, Union
+
+import torch
+import torch.nn.functional as F
+from torch import nn
+from torch.utils.checkpoint import checkpoint
+
+from ..configuration_utils import ConfigMixin, register_to_config
+from .attention import BasicTransformerBlock, SkipFFTransformerBlock
+from .attention_processor import (
+    ADDED_KV_ATTENTION_PROCESSORS,
+    CROSS_ATTENTION_PROCESSORS,
+    AttentionProcessor,
+    AttnAddedKVProcessor,
+    AttnProcessor,
+)
+from .embeddings import TimestepEmbedding, get_timestep_embedding
+from .modeling_utils import ModelMixin
+from .normalization import GlobalResponseNorm, RMSNorm
+from .resnet import Downsample2D, Upsample2D
+
+
+class UVit2DModel(ModelMixin, ConfigMixin):
+    _supports_gradient_checkpointing = True
+
+    @register_to_config
+    def __init__(
+        self,
+        # global config
+        hidden_size: int = 1024,
+        use_bias: bool = False,
+        hidden_dropout: float = 0.0,
+        # conditioning dimensions
+        cond_embed_dim: int = 768,
+        micro_cond_encode_dim: int = 256,
+        micro_cond_embed_dim: int = 1280,
+        encoder_hidden_size: int = 768,
+        # num tokens
+        vocab_size: int = 8256,  # codebook_size + 1 (for the mask token) rounded
+        codebook_size: int = 8192,
+        # `UVit2DConvEmbed`
+        in_channels: int = 768,
+        block_out_channels: int = 768,
+        num_res_blocks: int = 3,
+        downsample: bool = False,
+        upsample: bool = False,
+        block_num_heads: int = 12,
+        # `TransformerLayer`
+        num_hidden_layers: int = 22,
+        num_attention_heads: int = 16,
+        # `Attention`
+        attention_dropout: float = 0.0,
+        # `FeedForward`
+        intermediate_size: int = 2816,
+        # `Norm`
+        layer_norm_eps: float = 1e-6,
+        ln_elementwise_affine: bool = True,
+        sample_size: int = 64,
+    ):
+        super().__init__()
+
+        self.encoder_proj = nn.Linear(encoder_hidden_size, hidden_size, bias=use_bias)
+        self.encoder_proj_layer_norm = RMSNorm(hidden_size, layer_norm_eps, ln_elementwise_affine)
+
+        self.embed = UVit2DConvEmbed(
+            in_channels, block_out_channels, vocab_size, ln_elementwise_affine, layer_norm_eps, use_bias
+        )
+
+        self.cond_embed = TimestepEmbedding(
+            micro_cond_embed_dim + cond_embed_dim, hidden_size, sample_proj_bias=use_bias
+        )
+
+        self.down_block = UVitBlock(
+            block_out_channels,
+            num_res_blocks,
+            hidden_size,
+            hidden_dropout,
+            ln_elementwise_affine,
+            layer_norm_eps,
+            use_bias,
+            block_num_heads,
+            attention_dropout,
+            downsample,
+            False,
+        )
+
+        self.project_to_hidden_norm = RMSNorm(block_out_channels, layer_norm_eps, ln_elementwise_affine)
+        self.project_to_hidden = nn.Linear(block_out_channels, hidden_size, bias=use_bias)
+
+        self.transformer_layers = nn.ModuleList(
+            [
+                BasicTransformerBlock(
+                    dim=hidden_size,
+                    num_attention_heads=num_attention_heads,
+                    attention_head_dim=hidden_size // num_attention_heads,
+                    dropout=hidden_dropout,
+                    cross_attention_dim=hidden_size,
+                    attention_bias=use_bias,
+                    norm_type="ada_norm_continuous",
+                    ada_norm_continous_conditioning_embedding_dim=hidden_size,
+                    norm_elementwise_affine=ln_elementwise_affine,
+                    norm_eps=layer_norm_eps,
+                    ada_norm_bias=use_bias,
+                    ff_inner_dim=intermediate_size,
+                    ff_bias=use_bias,
+                    attention_out_bias=use_bias,
+                )
+                for _ in range(num_hidden_layers)
+            ]
+        )
+
+        self.project_from_hidden_norm = RMSNorm(hidden_size, layer_norm_eps, ln_elementwise_affine)
+        self.project_from_hidden = nn.Linear(hidden_size, block_out_channels, bias=use_bias)
+
+        self.up_block = UVitBlock(
+            block_out_channels,
+            num_res_blocks,
+            hidden_size,
+            hidden_dropout,
+            ln_elementwise_affine,
+            layer_norm_eps,
+            use_bias,
+            block_num_heads,
+            attention_dropout,
+            downsample=False,
+            upsample=upsample,
+        )
+
+        self.mlm_layer = ConvMlmLayer(
+            block_out_channels, in_channels, use_bias, ln_elementwise_affine, layer_norm_eps, codebook_size
+        )
+
+        self.gradient_checkpointing = False
+
+    def _set_gradient_checkpointing(self, module, value: bool = False) -> None:
+        pass
+
+    def forward(self, input_ids, encoder_hidden_states, pooled_text_emb, micro_conds, cross_attention_kwargs=None):
+        encoder_hidden_states = self.encoder_proj(encoder_hidden_states)
+        encoder_hidden_states = self.encoder_proj_layer_norm(encoder_hidden_states)
+
+        micro_cond_embeds = get_timestep_embedding(
+            micro_conds.flatten(), self.config.micro_cond_encode_dim, flip_sin_to_cos=True, downscale_freq_shift=0
+        )
+
+        micro_cond_embeds = micro_cond_embeds.reshape((input_ids.shape[0], -1))
+
+        pooled_text_emb = torch.cat([pooled_text_emb, micro_cond_embeds], dim=1)
+        pooled_text_emb = pooled_text_emb.to(dtype=self.dtype)
+        pooled_text_emb = self.cond_embed(pooled_text_emb).to(encoder_hidden_states.dtype)
+
+        hidden_states = self.embed(input_ids)
+
+        hidden_states = self.down_block(
+            hidden_states,
+            pooled_text_emb=pooled_text_emb,
+            encoder_hidden_states=encoder_hidden_states,
+            cross_attention_kwargs=cross_attention_kwargs,
+        )
+
+        batch_size, channels, height, width = hidden_states.shape
+        hidden_states = hidden_states.permute(0, 2, 3, 1).reshape(batch_size, height * width, channels)
+
+        hidden_states = self.project_to_hidden_norm(hidden_states)
+        hidden_states = self.project_to_hidden(hidden_states)
+
+        for layer in self.transformer_layers:
+            if self.training and self.gradient_checkpointing:
+
+                def layer_(*args):
+                    return checkpoint(layer, *args)
+
+            else:
+                layer_ = layer
+
+            hidden_states = layer_(
+                hidden_states,
+                encoder_hidden_states=encoder_hidden_states,
+                cross_attention_kwargs=cross_attention_kwargs,
+                added_cond_kwargs={"pooled_text_emb": pooled_text_emb},
+            )
+
+        hidden_states = self.project_from_hidden_norm(hidden_states)
+        hidden_states = self.project_from_hidden(hidden_states)
+
+        hidden_states = hidden_states.reshape(batch_size, height, width, channels).permute(0, 3, 1, 2)
+
+        hidden_states = self.up_block(
+            hidden_states,
+            pooled_text_emb=pooled_text_emb,
+            encoder_hidden_states=encoder_hidden_states,
+            cross_attention_kwargs=cross_attention_kwargs,
+        )
+
+        logits = self.mlm_layer(hidden_states)
+
+        return logits
+
+    @property
+    # Copied from diffusers.models.unet_2d_condition.UNet2DConditionModel.attn_processors
+    def attn_processors(self) -> Dict[str, AttentionProcessor]:
+        r"""
+        Returns:
+            `dict` of attention processors: A dictionary containing all attention processors used in the model with
+            indexed by its weight name.
+        """
+        # set recursively
+        processors = {}
+
+        def fn_recursive_add_processors(name: str, module: torch.nn.Module, processors: Dict[str, AttentionProcessor]):
+            if hasattr(module, "get_processor"):
+                processors[f"{name}.processor"] = module.get_processor(return_deprecated_lora=True)
+
+            for sub_name, child in module.named_children():
+                fn_recursive_add_processors(f"{name}.{sub_name}", child, processors)
+
+            return processors
+
+        for name, module in self.named_children():
+            fn_recursive_add_processors(name, module, processors)
+
+        return processors
+
+    # Copied from diffusers.models.unet_2d_condition.UNet2DConditionModel.set_attn_processor
+    def set_attn_processor(
+        self, processor: Union[AttentionProcessor, Dict[str, AttentionProcessor]], _remove_lora=False
+    ):
+        r"""
+        Sets the attention processor to use to compute attention.
+
+        Parameters:
+            processor (`dict` of `AttentionProcessor` or only `AttentionProcessor`):
+                The instantiated processor class or a dictionary of processor classes that will be set as the processor
+                for **all** `Attention` layers.
+
+                If `processor` is a dict, the key needs to define the path to the corresponding cross attention
+                processor. This is strongly recommended when setting trainable attention processors.
+
+        """
+        count = len(self.attn_processors.keys())
+
+        if isinstance(processor, dict) and len(processor) != count:
+            raise ValueError(
+                f"A dict of processors was passed, but the number of processors {len(processor)} does not match the"
+                f" number of attention layers: {count}. Please make sure to pass {count} processor classes."
+            )
+
+        def fn_recursive_attn_processor(name: str, module: torch.nn.Module, processor):
+            if hasattr(module, "set_processor"):
+                if not isinstance(processor, dict):
+                    module.set_processor(processor, _remove_lora=_remove_lora)
+                else:
+                    module.set_processor(processor.pop(f"{name}.processor"), _remove_lora=_remove_lora)
+
+            for sub_name, child in module.named_children():
+                fn_recursive_attn_processor(f"{name}.{sub_name}", child, processor)
+
+        for name, module in self.named_children():
+            fn_recursive_attn_processor(name, module, processor)
+
+    # Copied from diffusers.models.unet_2d_condition.UNet2DConditionModel.set_default_attn_processor
+    def set_default_attn_processor(self):
+        """
+        Disables custom attention processors and sets the default attention implementation.
+        """
+        if all(proc.__class__ in ADDED_KV_ATTENTION_PROCESSORS for proc in self.attn_processors.values()):
+            processor = AttnAddedKVProcessor()
+        elif all(proc.__class__ in CROSS_ATTENTION_PROCESSORS for proc in self.attn_processors.values()):
+            processor = AttnProcessor()
+        else:
+            raise ValueError(
+                f"Cannot call `set_default_attn_processor` when attention processors are of type {next(iter(self.attn_processors.values()))}"
+            )
+
+        self.set_attn_processor(processor, _remove_lora=True)
+
+
+class UVit2DConvEmbed(nn.Module):
+    def __init__(self, in_channels, block_out_channels, vocab_size, elementwise_affine, eps, bias):
+        super().__init__()
+        self.embeddings = nn.Embedding(vocab_size, in_channels)
+        self.layer_norm = RMSNorm(in_channels, eps, elementwise_affine)
+        self.conv = nn.Conv2d(in_channels, block_out_channels, kernel_size=1, bias=bias)
+
+    def forward(self, input_ids):
+        embeddings = self.embeddings(input_ids)
+        embeddings = self.layer_norm(embeddings)
+        embeddings = embeddings.permute(0, 3, 1, 2)
+        embeddings = self.conv(embeddings)
+        return embeddings
+
+
+class UVitBlock(nn.Module):
+    def __init__(
+        self,
+        channels,
+        num_res_blocks: int,
+        hidden_size,
+        hidden_dropout,
+        ln_elementwise_affine,
+        layer_norm_eps,
+        use_bias,
+        block_num_heads,
+        attention_dropout,
+        downsample: bool,
+        upsample: bool,
+    ):
+        super().__init__()
+
+        if downsample:
+            self.downsample = Downsample2D(
+                channels,
+                use_conv=True,
+                padding=0,
+                name="Conv2d_0",
+                kernel_size=2,
+                norm_type="rms_norm",
+                eps=layer_norm_eps,
+                elementwise_affine=ln_elementwise_affine,
+                bias=use_bias,
+            )
+        else:
+            self.downsample = None
+
+        self.res_blocks = nn.ModuleList(
+            [
+                ConvNextBlock(
+                    channels,
+                    layer_norm_eps,
+                    ln_elementwise_affine,
+                    use_bias,
+                    hidden_dropout,
+                    hidden_size,
+                )
+                for i in range(num_res_blocks)
+            ]
+        )
+
+        self.attention_blocks = nn.ModuleList(
+            [
+                SkipFFTransformerBlock(
+                    channels,
+                    block_num_heads,
+                    channels // block_num_heads,
+                    hidden_size,
+                    use_bias,
+                    attention_dropout,
+                    channels,
+                    attention_bias=use_bias,
+                    attention_out_bias=use_bias,
+                )
+                for _ in range(num_res_blocks)
+            ]
+        )
+
+        if upsample:
+            self.upsample = Upsample2D(
+                channels,
+                use_conv_transpose=True,
+                kernel_size=2,
+                padding=0,
+                name="conv",
+                norm_type="rms_norm",
+                eps=layer_norm_eps,
+                elementwise_affine=ln_elementwise_affine,
+                bias=use_bias,
+                interpolate=False,
+            )
+        else:
+            self.upsample = None
+
+    def forward(self, x, pooled_text_emb, encoder_hidden_states, cross_attention_kwargs):
+        if self.downsample is not None:
+            x = self.downsample(x)
+
+        for res_block, attention_block in zip(self.res_blocks, self.attention_blocks):
+            x = res_block(x, pooled_text_emb)
+
+            batch_size, channels, height, width = x.shape
+            x = x.view(batch_size, channels, height * width).permute(0, 2, 1)
+            x = attention_block(
+                x, encoder_hidden_states=encoder_hidden_states, cross_attention_kwargs=cross_attention_kwargs
+            )
+            x = x.permute(0, 2, 1).view(batch_size, channels, height, width)
+
+        if self.upsample is not None:
+            x = self.upsample(x)
+
+        return x
+
+
+class ConvNextBlock(nn.Module):
+    def __init__(
+        self, channels, layer_norm_eps, ln_elementwise_affine, use_bias, hidden_dropout, hidden_size, res_ffn_factor=4
+    ):
+        super().__init__()
+        self.depthwise = nn.Conv2d(
+            channels,
+            channels,
+            kernel_size=3,
+            padding=1,
+            groups=channels,
+            bias=use_bias,
+        )
+        self.norm = RMSNorm(channels, layer_norm_eps, ln_elementwise_affine)
+        self.channelwise_linear_1 = nn.Linear(channels, int(channels * res_ffn_factor), bias=use_bias)
+        self.channelwise_act = nn.GELU()
+        self.channelwise_norm = GlobalResponseNorm(int(channels * res_ffn_factor))
+        self.channelwise_linear_2 = nn.Linear(int(channels * res_ffn_factor), channels, bias=use_bias)
+        self.channelwise_dropout = nn.Dropout(hidden_dropout)
+        self.cond_embeds_mapper = nn.Linear(hidden_size, channels * 2, use_bias)
+
+    def forward(self, x, cond_embeds):
+        x_res = x
+
+        x = self.depthwise(x)
+
+        x = x.permute(0, 2, 3, 1)
+        x = self.norm(x)
+
+        x = self.channelwise_linear_1(x)
+        x = self.channelwise_act(x)
+        x = self.channelwise_norm(x)
+        x = self.channelwise_linear_2(x)
+        x = self.channelwise_dropout(x)
+
+        x = x.permute(0, 3, 1, 2)
+
+        x = x + x_res
+
+        scale, shift = self.cond_embeds_mapper(F.silu(cond_embeds)).chunk(2, dim=1)
+        x = x * (1 + scale[:, :, None, None]) + shift[:, :, None, None]
+
+        return x
+
+
+class ConvMlmLayer(nn.Module):
+    def __init__(
+        self,
+        block_out_channels: int,
+        in_channels: int,
+        use_bias: bool,
+        ln_elementwise_affine: bool,
+        layer_norm_eps: float,
+        codebook_size: int,
+    ):
+        super().__init__()
+        self.conv1 = nn.Conv2d(block_out_channels, in_channels, kernel_size=1, bias=use_bias)
+        self.layer_norm = RMSNorm(in_channels, layer_norm_eps, ln_elementwise_affine)
+        self.conv2 = nn.Conv2d(in_channels, codebook_size, kernel_size=1, bias=use_bias)
+
+    def forward(self, hidden_states):
+        hidden_states = self.conv1(hidden_states)
+        hidden_states = self.layer_norm(hidden_states.permute(0, 2, 3, 1)).permute(0, 3, 1, 2)
+        logits = self.conv2(hidden_states)
+        return logits

src/diffusers/models/vq_model.py

@@ -88,6 +88,9 @@ class VQModel(ModelMixin, ConfigMixin):
         vq_embed_dim: Optional[int] = None,
         scaling_factor: float = 0.18215,
         norm_type: str = "group",  # group, spatial
+        mid_block_add_attention=True,
+        lookup_from_codebook=False,
+        force_upcast=False,
     ):
         super().__init__()
 
@@ -101,6 +104,7 @@ class VQModel(ModelMixin, ConfigMixin):
             act_fn=act_fn,
             norm_num_groups=norm_num_groups,
             double_z=False,
+            mid_block_add_attention=mid_block_add_attention,
         )
 
         vq_embed_dim = vq_embed_dim if vq_embed_dim is not None else latent_channels
@@ -119,6 +123,7 @@ class VQModel(ModelMixin, ConfigMixin):
             act_fn=act_fn,
             norm_num_groups=norm_num_groups,
             norm_type=norm_type,
+            mid_block_add_attention=mid_block_add_attention,
         )
 
     @apply_forward_hook
@@ -133,11 +138,13 @@ class VQModel(ModelMixin, ConfigMixin):
 
     @apply_forward_hook
     def decode(
-        self, h: torch.FloatTensor, force_not_quantize: bool = False, return_dict: bool = True
+        self, h: torch.FloatTensor, force_not_quantize: bool = False, return_dict: bool = True, shape=None
     ) -> Union[DecoderOutput, torch.FloatTensor]:
         # also go through quantization layer
         if not force_not_quantize:
             quant, _, _ = self.quantize(h)
+        elif self.config.lookup_from_codebook:
+            quant = self.quantize.get_codebook_entry(h, shape)
         else:
             quant = h
         quant2 = self.post_quant_conv(quant)

src/diffusers/pipelines/__init__.py

@@ -108,6 +108,7 @@ else:
             "VersatileDiffusionTextToImagePipeline",
         ]
     )
+    _import_structure["amused"] = ["AmusedImg2ImgPipeline", "AmusedInpaintPipeline", "AmusedPipeline"]
     _import_structure["animatediff"] = ["AnimateDiffPipeline"]
     _import_structure["audioldm"] = ["AudioLDMPipeline"]
     _import_structure["audioldm2"] = [
@@ -179,27 +180,26 @@ else:
     _import_structure["stable_diffusion"].extend(
         [
             "CLIPImageProjection",
-            "StableDiffusionAttendAndExcitePipeline",
             "StableDiffusionDepth2ImgPipeline",
-            "StableDiffusionDiffEditPipeline",
-            "StableDiffusionGLIGENPipeline",
-            "StableDiffusionGLIGENPipeline",
-            "StableDiffusionGLIGENTextImagePipeline",
             "StableDiffusionImageVariationPipeline",
             "StableDiffusionImg2ImgPipeline",
             "StableDiffusionInpaintPipeline",
             "StableDiffusionInstructPix2PixPipeline",
             "StableDiffusionLatentUpscalePipeline",
-            "StableDiffusionLDM3DPipeline",
-            "StableDiffusionPanoramaPipeline",
             "StableDiffusionPipeline",
-            "StableDiffusionSAGPipeline",
             "StableDiffusionUpscalePipeline",
             "StableUnCLIPImg2ImgPipeline",
             "StableUnCLIPPipeline",
+            "StableDiffusionLDM3DPipeline",
         ]
     )
+    _import_structure["stable_diffusion_attend_and_excite"] = ["StableDiffusionAttendAndExcitePipeline"]
     _import_structure["stable_diffusion_safe"] = ["StableDiffusionPipelineSafe"]
+    _import_structure["stable_diffusion_sag"] = ["StableDiffusionSAGPipeline"]
+    _import_structure["stable_diffusion_gligen"] = [
+        "StableDiffusionGLIGENPipeline",
+        "StableDiffusionGLIGENTextImagePipeline",
+    ]
     _import_structure["stable_video_diffusion"] = ["StableVideoDiffusionPipeline"]
     _import_structure["stable_diffusion_xl"].extend(
         [
@@ -209,6 +209,9 @@ else:
             "StableDiffusionXLPipeline",
         ]
     )
+    _import_structure["stable_diffusion_diffedit"] = ["StableDiffusionDiffEditPipeline"]
+    _import_structure["stable_diffusion_ldm3d"] = ["StableDiffusionLDM3DPipeline"]
+    _import_structure["stable_diffusion_panorama"] = ["StableDiffusionPanoramaPipeline"]
     _import_structure["t2i_adapter"] = [
         "StableDiffusionAdapterPipeline",
         "StableDiffusionXLAdapterPipeline",
@@ -268,7 +271,7 @@ except OptionalDependencyNotAvailable:
 
     _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_and_k_diffusion_objects))
 else:
-    _import_structure["stable_diffusion"].extend(["StableDiffusionKDiffusionPipeline"])
+    _import_structure["stable_diffusion_k_diffusion"] = ["StableDiffusionKDiffusionPipeline"]
 try:
     if not is_flax_available():
         raise OptionalDependencyNotAvailable()
@@ -340,6 +343,7 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
     except OptionalDependencyNotAvailable:
         from ..utils.dummy_torch_and_transformers_objects import *
     else:
+        from .amused import AmusedImg2ImgPipeline, AmusedInpaintPipeline, AmusedPipeline
         from .animatediff import AnimateDiffPipeline
         from .audioldm import AudioLDMPipeline
         from .audioldm2 import (
@@ -420,25 +424,24 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
         from .shap_e import ShapEImg2ImgPipeline, ShapEPipeline
         from .stable_diffusion import (
             CLIPImageProjection,
-            StableDiffusionAttendAndExcitePipeline,
             StableDiffusionDepth2ImgPipeline,
-            StableDiffusionDiffEditPipeline,
-            StableDiffusionGLIGENPipeline,
-            StableDiffusionGLIGENTextImagePipeline,
             StableDiffusionImageVariationPipeline,
             StableDiffusionImg2ImgPipeline,
             StableDiffusionInpaintPipeline,
             StableDiffusionInstructPix2PixPipeline,
             StableDiffusionLatentUpscalePipeline,
-            StableDiffusionLDM3DPipeline,
-            StableDiffusionPanoramaPipeline,
             StableDiffusionPipeline,
-            StableDiffusionSAGPipeline,
             StableDiffusionUpscalePipeline,
             StableUnCLIPImg2ImgPipeline,
             StableUnCLIPPipeline,
         )
+        from .stable_diffusion_attend_and_excite import StableDiffusionAttendAndExcitePipeline
+        from .stable_diffusion_diffedit import StableDiffusionDiffEditPipeline
+        from .stable_diffusion_gligen import StableDiffusionGLIGENPipeline, StableDiffusionGLIGENTextImagePipeline
+        from .stable_diffusion_ldm3d import StableDiffusionLDM3DPipeline
+        from .stable_diffusion_panorama import StableDiffusionPanoramaPipeline
         from .stable_diffusion_safe import StableDiffusionPipelineSafe
+        from .stable_diffusion_sag import StableDiffusionSAGPipeline
         from .stable_diffusion_xl import (
             StableDiffusionXLImg2ImgPipeline,
             StableDiffusionXLInpaintPipeline,
@@ -498,7 +501,7 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
         except OptionalDependencyNotAvailable:
             from ..utils.dummy_torch_and_transformers_and_k_diffusion_objects import *
         else:
-            from .stable_diffusion import StableDiffusionKDiffusionPipeline
+            from .stable_diffusion_k_diffusion import StableDiffusionKDiffusionPipeline
 
         try:
             if not is_flax_available():

src/diffusers/pipelines/amused/__init__.py

@@ -0,0 +1,62 @@
+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+try:
+    if not (is_transformers_available() and is_torch_available()):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils.dummy_torch_and_transformers_objects import (
+        AmusedImg2ImgPipeline,
+        AmusedInpaintPipeline,
+        AmusedPipeline,
+    )
+
+    _dummy_objects.update(
+        {
+            "AmusedPipeline": AmusedPipeline,
+            "AmusedImg2ImgPipeline": AmusedImg2ImgPipeline,
+            "AmusedInpaintPipeline": AmusedInpaintPipeline,
+        }
+    )
+else:
+    _import_structure["pipeline_amused"] = ["AmusedPipeline"]
+    _import_structure["pipeline_amused_img2img"] = ["AmusedImg2ImgPipeline"]
+    _import_structure["pipeline_amused_inpaint"] = ["AmusedInpaintPipeline"]
+
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (is_transformers_available() and is_torch_available()):
+            raise OptionalDependencyNotAvailable()
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_objects import (
+            AmusedPipeline,
+        )
+    else:
+        from .pipeline_amused import AmusedPipeline
+        from .pipeline_amused_img2img import AmusedImg2ImgPipeline
+        from .pipeline_amused_inpaint import AmusedInpaintPipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/amused/pipeline_amused.py

@@ -0,0 +1,328 @@
+# Copyright 2023 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import Any, Callable, Dict, List, Optional, Tuple, Union
+
+import torch
+from transformers import CLIPTextModelWithProjection, CLIPTokenizer
+
+from ...image_processor import VaeImageProcessor
+from ...models import UVit2DModel, VQModel
+from ...schedulers import AmusedScheduler
+from ...utils import replace_example_docstring
+from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
+
+
+EXAMPLE_DOC_STRING = """
+    Examples:
+        ```py
+        >>> import torch
+        >>> from diffusers import AmusedPipeline
+
+        >>> pipe = AmusedPipeline.from_pretrained(
+        ...     "huggingface/amused-512", variant="fp16", torch_dtype=torch.float16
+        ... )
+        >>> pipe = pipe.to("cuda")
+
+        >>> prompt = "a photo of an astronaut riding a horse on mars"
+        >>> image = pipe(prompt).images[0]
+        ```
+"""
+
+
+class AmusedPipeline(DiffusionPipeline):
+    image_processor: VaeImageProcessor
+    vqvae: VQModel
+    tokenizer: CLIPTokenizer
+    text_encoder: CLIPTextModelWithProjection
+    transformer: UVit2DModel
+    scheduler: AmusedScheduler
+
+    model_cpu_offload_seq = "text_encoder->transformer->vqvae"
+
+    def __init__(
+        self,
+        vqvae: VQModel,
+        tokenizer: CLIPTokenizer,
+        text_encoder: CLIPTextModelWithProjection,
+        transformer: UVit2DModel,
+        scheduler: AmusedScheduler,
+    ):
+        super().__init__()
+
+        self.register_modules(
+            vqvae=vqvae,
+            tokenizer=tokenizer,
+            text_encoder=text_encoder,
+            transformer=transformer,
+            scheduler=scheduler,
+        )
+        self.vae_scale_factor = 2 ** (len(self.vqvae.config.block_out_channels) - 1)
+        self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor, do_normalize=False)
+
+    @torch.no_grad()
+    @replace_example_docstring(EXAMPLE_DOC_STRING)
+    def __call__(
+        self,
+        prompt: Optional[Union[List[str], str]] = None,
+        height: Optional[int] = None,
+        width: Optional[int] = None,
+        num_inference_steps: int = 12,
+        guidance_scale: float = 10.0,
+        negative_prompt: Optional[Union[str, List[str]]] = None,
+        num_images_per_prompt: Optional[int] = 1,
+        generator: Optional[torch.Generator] = None,
+        latents: Optional[torch.IntTensor] = None,
+        prompt_embeds: Optional[torch.Tensor] = None,
+        encoder_hidden_states: Optional[torch.Tensor] = None,
+        negative_prompt_embeds: Optional[torch.Tensor] = None,
+        negative_encoder_hidden_states: Optional[torch.Tensor] = None,
+        output_type="pil",
+        return_dict: bool = True,
+        callback: Optional[Callable[[int, int, torch.FloatTensor], None]] = None,
+        callback_steps: int = 1,
+        cross_attention_kwargs: Optional[Dict[str, Any]] = None,
+        micro_conditioning_aesthetic_score: int = 6,
+        micro_conditioning_crop_coord: Tuple[int, int] = (0, 0),
+        temperature: Union[int, Tuple[int, int], List[int]] = (2, 0),
+    ):
+        """
+        The call function to the pipeline for generation.
+
+        Args:
+            prompt (`str` or `List[str]`, *optional*):
+                The prompt or prompts to guide image generation. If not defined, you need to pass `prompt_embeds`.
+            height (`int`, *optional*, defaults to `self.transformer.config.sample_size * self.vae_scale_factor`):
+                The height in pixels of the generated image.
+            width (`int`, *optional*, defaults to `self.unet.config.sample_size * self.vae_scale_factor`):
+                The width in pixels of the generated image.
+            num_inference_steps (`int`, *optional*, defaults to 16):
+                The number of denoising steps. More denoising steps usually lead to a higher quality image at the
+                expense of slower inference.
+            guidance_scale (`float`, *optional*, defaults to 10.0):
+                A higher guidance scale value encourages the model to generate images closely linked to the text
+                `prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
+            negative_prompt (`str` or `List[str]`, *optional*):
+                The prompt or prompts to guide what to not include in image generation. If not defined, you need to
+                pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
+            num_images_per_prompt (`int`, *optional*, defaults to 1):
+                The number of images to generate per prompt.
+            generator (`torch.Generator`, *optional*):
+                A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
+                generation deterministic.
+            latents (`torch.IntTensor`, *optional*):
+                Pre-generated tokens representing latent vectors in `self.vqvae`, to be used as inputs for image
+                gneration. If not provided, the starting latents will be completely masked.
+            prompt_embeds (`torch.FloatTensor`, *optional*):
+                Pre-generated text embeddings. Can be used to easily tweak text inputs (prompt weighting). If not
+                provided, text embeddings are generated from the `prompt` input argument. A single vector from the
+                pooled and projected final hidden states.
+            encoder_hidden_states (`torch.FloatTensor`, *optional*):
+                Pre-generated penultimate hidden states from the text encoder providing additional text conditioning.
+            negative_prompt_embeds (`torch.FloatTensor`, *optional*):
+                Pre-generated negative text embeddings. Can be used to easily tweak text inputs (prompt weighting). If
+                not provided, `negative_prompt_embeds` are generated from the `negative_prompt` input argument.
+            negative_encoder_hidden_states (`torch.FloatTensor`, *optional*):
+                Analogous to `encoder_hidden_states` for the positive prompt.
+            output_type (`str`, *optional*, defaults to `"pil"`):
+                The output format of the generated image. Choose between `PIL.Image` or `np.array`.
+            return_dict (`bool`, *optional*, defaults to `True`):
+                Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
+                plain tuple.
+            callback (`Callable`, *optional*):
+                A function that calls every `callback_steps` steps during inference. The function is called with the
+                following arguments: `callback(step: int, timestep: int, latents: torch.FloatTensor)`.
+            callback_steps (`int`, *optional*, defaults to 1):
+                The frequency at which the `callback` function is called. If not specified, the callback is called at
+                every step.
+            cross_attention_kwargs (`dict`, *optional*):
+                A kwargs dictionary that if specified is passed along to the [`AttentionProcessor`] as defined in
+                [`self.processor`](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py).
+            micro_conditioning_aesthetic_score (`int`, *optional*, defaults to 6):
+                The targeted aesthetic score according to the laion aesthetic classifier. See https://laion.ai/blog/laion-aesthetics/
+                and the micro-conditioning section of https://arxiv.org/abs/2307.01952.
+            micro_conditioning_crop_coord (`Tuple[int]`, *optional*, defaults to (0, 0)):
+                The targeted height, width crop coordinates. See the micro-conditioning section of https://arxiv.org/abs/2307.01952.
+            temperature (`Union[int, Tuple[int, int], List[int]]`, *optional*, defaults to (2, 0)):
+                Configures the temperature scheduler on `self.scheduler` see `AmusedScheduler#set_timesteps`.
+
+        Examples:
+
+        Returns:
+            [`~pipelines.pipeline_utils.ImagePipelineOutput`] or `tuple`:
+                If `return_dict` is `True`, [`~pipelines.pipeline_utils.ImagePipelineOutput`] is returned, otherwise a
+                `tuple` is returned where the first element is a list with the generated images.
+        """
+        if (prompt_embeds is not None and encoder_hidden_states is None) or (
+            prompt_embeds is None and encoder_hidden_states is not None
+        ):
+            raise ValueError("pass either both `prompt_embeds` and `encoder_hidden_states` or neither")
+
+        if (negative_prompt_embeds is not None and negative_encoder_hidden_states is None) or (
+            negative_prompt_embeds is None and negative_encoder_hidden_states is not None
+        ):
+            raise ValueError(
+                "pass either both `negatve_prompt_embeds` and `negative_encoder_hidden_states` or neither"
+            )
+
+        if (prompt is None and prompt_embeds is None) or (prompt is not None and prompt_embeds is not None):
+            raise ValueError("pass only one of `prompt` or `prompt_embeds`")
+
+        if isinstance(prompt, str):
+            prompt = [prompt]
+
+        if prompt is not None:
+            batch_size = len(prompt)
+        else:
+            batch_size = prompt_embeds.shape[0]
+
+        batch_size = batch_size * num_images_per_prompt
+
+        if height is None:
+            height = self.transformer.config.sample_size * self.vae_scale_factor
+
+        if width is None:
+            width = self.transformer.config.sample_size * self.vae_scale_factor
+
+        if prompt_embeds is None:
+            input_ids = self.tokenizer(
+                prompt,
+                return_tensors="pt",
+                padding="max_length",
+                truncation=True,
+                max_length=self.tokenizer.model_max_length,
+            ).input_ids.to(self._execution_device)
+
+            outputs = self.text_encoder(input_ids, return_dict=True, output_hidden_states=True)
+            prompt_embeds = outputs.text_embeds
+            encoder_hidden_states = outputs.hidden_states[-2]
+
+        prompt_embeds = prompt_embeds.repeat(num_images_per_prompt, 1)
+        encoder_hidden_states = encoder_hidden_states.repeat(num_images_per_prompt, 1, 1)
+
+        if guidance_scale > 1.0:
+            if negative_prompt_embeds is None:
+                if negative_prompt is None:
+                    negative_prompt = [""] * len(prompt)
+
+                if isinstance(negative_prompt, str):
+                    negative_prompt = [negative_prompt]
+
+                input_ids = self.tokenizer(
+                    negative_prompt,
+                    return_tensors="pt",
+                    padding="max_length",
+                    truncation=True,
+                    max_length=self.tokenizer.model_max_length,
+                ).input_ids.to(self._execution_device)
+
+                outputs = self.text_encoder(input_ids, return_dict=True, output_hidden_states=True)
+                negative_prompt_embeds = outputs.text_embeds
+                negative_encoder_hidden_states = outputs.hidden_states[-2]
+
+            negative_prompt_embeds = negative_prompt_embeds.repeat(num_images_per_prompt, 1)
+            negative_encoder_hidden_states = negative_encoder_hidden_states.repeat(num_images_per_prompt, 1, 1)
+
+            prompt_embeds = torch.concat([negative_prompt_embeds, prompt_embeds])
+            encoder_hidden_states = torch.concat([negative_encoder_hidden_states, encoder_hidden_states])
+
+        # Note that the micro conditionings _do_ flip the order of width, height for the original size
+        # and the crop coordinates. This is how it was done in the original code base
+        micro_conds = torch.tensor(
+            [
+                width,
+                height,
+                micro_conditioning_crop_coord[0],
+                micro_conditioning_crop_coord[1],
+                micro_conditioning_aesthetic_score,
+            ],
+            device=self._execution_device,
+            dtype=encoder_hidden_states.dtype,
+        )
+        micro_conds = micro_conds.unsqueeze(0)
+        micro_conds = micro_conds.expand(2 * batch_size if guidance_scale > 1.0 else batch_size, -1)
+
+        shape = (batch_size, height // self.vae_scale_factor, width // self.vae_scale_factor)
+
+        if latents is None:
+            latents = torch.full(
+                shape, self.scheduler.config.mask_token_id, dtype=torch.long, device=self._execution_device
+            )
+
+        self.scheduler.set_timesteps(num_inference_steps, temperature, self._execution_device)
+
+        num_warmup_steps = len(self.scheduler.timesteps) - num_inference_steps * self.scheduler.order
+        with self.progress_bar(total=num_inference_steps) as progress_bar:
+            for i, timestep in enumerate(self.scheduler.timesteps):
+                if guidance_scale > 1.0:
+                    model_input = torch.cat([latents] * 2)
+                else:
+                    model_input = latents
+
+                model_output = self.transformer(
+                    model_input,
+                    micro_conds=micro_conds,
+                    pooled_text_emb=prompt_embeds,
+                    encoder_hidden_states=encoder_hidden_states,
+                    cross_attention_kwargs=cross_attention_kwargs,
+                )
+
+                if guidance_scale > 1.0:
+                    uncond_logits, cond_logits = model_output.chunk(2)
+                    model_output = uncond_logits + guidance_scale * (cond_logits - uncond_logits)
+
+                latents = self.scheduler.step(
+                    model_output=model_output,
+                    timestep=timestep,
+                    sample=latents,
+                    generator=generator,
+                ).prev_sample
+
+                if i == len(self.scheduler.timesteps) - 1 or (
+                    (i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0
+                ):
+                    progress_bar.update()
+                    if callback is not None and i % callback_steps == 0:
+                        step_idx = i // getattr(self.scheduler, "order", 1)
+                        callback(step_idx, timestep, latents)
+
+        if output_type == "latent":
+            output = latents
+        else:
+            needs_upcasting = self.vqvae.dtype == torch.float16 and self.vqvae.config.force_upcast
+
+            if needs_upcasting:
+                self.vqvae.float()
+
+            output = self.vqvae.decode(
+                latents,
+                force_not_quantize=True,
+                shape=(
+                    batch_size,
+                    height // self.vae_scale_factor,
+                    width // self.vae_scale_factor,
+                    self.vqvae.config.latent_channels,
+                ),
+            ).sample.clip(0, 1)
+            output = self.image_processor.postprocess(output, output_type)
+
+            if needs_upcasting:
+                self.vqvae.half()
+
+        self.maybe_free_model_hooks()
+
+        if not return_dict:
+            return (output,)
+
+        return ImagePipelineOutput(output)

src/diffusers/pipelines/amused/pipeline_amused_img2img.py

@@ -0,0 +1,347 @@
+# Copyright 2023 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import Any, Callable, Dict, List, Optional, Tuple, Union
+
+import torch
+from transformers import CLIPTextModelWithProjection, CLIPTokenizer
+
+from ...image_processor import PipelineImageInput, VaeImageProcessor
+from ...models import UVit2DModel, VQModel
+from ...schedulers import AmusedScheduler
+from ...utils import replace_example_docstring
+from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
+
+
+EXAMPLE_DOC_STRING = """
+    Examples:
+        ```py
+        >>> import torch
+        >>> from diffusers import AmusedImg2ImgPipeline
+        >>> from diffusers.utils import load_image
+
+        >>> pipe = AmusedImg2ImgPipeline.from_pretrained(
+        ...     "huggingface/amused-512", variant="fp16", torch_dtype=torch.float16
+        ... )
+        >>> pipe = pipe.to("cuda")
+
+        >>> prompt = "winter mountains"
+        >>> input_image = (
+        ...     load_image(
+        ...         "https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains.jpg"
+        ...     )
+        ...     .resize((512, 512))
+        ...     .convert("RGB")
+        ... )
+        >>> image = pipe(prompt, input_image).images[0]
+        ```
+"""
+
+
+class AmusedImg2ImgPipeline(DiffusionPipeline):
+    image_processor: VaeImageProcessor
+    vqvae: VQModel
+    tokenizer: CLIPTokenizer
+    text_encoder: CLIPTextModelWithProjection
+    transformer: UVit2DModel
+    scheduler: AmusedScheduler
+
+    model_cpu_offload_seq = "text_encoder->transformer->vqvae"
+
+    # TODO - when calling self.vqvae.quantize, it uses self.vqvae.quantize.embedding.weight before
+    # the forward method of self.vqvae.quantize, so the hook doesn't get called to move the parameter
+    # off the meta device. There should be a way to fix this instead of just not offloading it
+    _exclude_from_cpu_offload = ["vqvae"]
+
+    def __init__(
+        self,
+        vqvae: VQModel,
+        tokenizer: CLIPTokenizer,
+        text_encoder: CLIPTextModelWithProjection,
+        transformer: UVit2DModel,
+        scheduler: AmusedScheduler,
+    ):
+        super().__init__()
+
+        self.register_modules(
+            vqvae=vqvae,
+            tokenizer=tokenizer,
+            text_encoder=text_encoder,
+            transformer=transformer,
+            scheduler=scheduler,
+        )
+        self.vae_scale_factor = 2 ** (len(self.vqvae.config.block_out_channels) - 1)
+        self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor, do_normalize=False)
+
+    @torch.no_grad()
+    @replace_example_docstring(EXAMPLE_DOC_STRING)
+    def __call__(
+        self,
+        prompt: Optional[Union[List[str], str]] = None,
+        image: PipelineImageInput = None,
+        strength: float = 0.5,
+        num_inference_steps: int = 12,
+        guidance_scale: float = 10.0,
+        negative_prompt: Optional[Union[str, List[str]]] = None,
+        num_images_per_prompt: Optional[int] = 1,
+        generator: Optional[torch.Generator] = None,
+        prompt_embeds: Optional[torch.Tensor] = None,
+        encoder_hidden_states: Optional[torch.Tensor] = None,
+        negative_prompt_embeds: Optional[torch.Tensor] = None,
+        negative_encoder_hidden_states: Optional[torch.Tensor] = None,
+        output_type="pil",
+        return_dict: bool = True,
+        callback: Optional[Callable[[int, int, torch.FloatTensor], None]] = None,
+        callback_steps: int = 1,
+        cross_attention_kwargs: Optional[Dict[str, Any]] = None,
+        micro_conditioning_aesthetic_score: int = 6,
+        micro_conditioning_crop_coord: Tuple[int, int] = (0, 0),
+        temperature: Union[int, Tuple[int, int], List[int]] = (2, 0),
+    ):
+        """
+        The call function to the pipeline for generation.
+
+        Args:
+            prompt (`str` or `List[str]`, *optional*):
+                The prompt or prompts to guide image generation. If not defined, you need to pass `prompt_embeds`.
+            image (`torch.FloatTensor`, `PIL.Image.Image`, `np.ndarray`, `List[torch.FloatTensor]`, `List[PIL.Image.Image]`, or `List[np.ndarray]`):
+                `Image`, numpy array or tensor representing an image batch to be used as the starting point. For both
+                numpy array and pytorch tensor, the expected value range is between `[0, 1]` If it's a tensor or a list
+                or tensors, the expected shape should be `(B, C, H, W)` or `(C, H, W)`. If it is a numpy array or a
+                list of arrays, the expected shape should be `(B, H, W, C)` or `(H, W, C)` It can also accept image
+                latents as `image`, but if passing latents directly it is not encoded again.
+            strength (`float`, *optional*, defaults to 0.5):
+                Indicates extent to transform the reference `image`. Must be between 0 and 1. `image` is used as a
+                starting point and more noise is added the higher the `strength`. The number of denoising steps depends
+                on the amount of noise initially added. When `strength` is 1, added noise is maximum and the denoising
+                process runs for the full number of iterations specified in `num_inference_steps`. A value of 1
+                essentially ignores `image`.
+            num_inference_steps (`int`, *optional*, defaults to 16):
+                The number of denoising steps. More denoising steps usually lead to a higher quality image at the
+                expense of slower inference.
+            guidance_scale (`float`, *optional*, defaults to 10.0):
+                A higher guidance scale value encourages the model to generate images closely linked to the text
+                `prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
+            negative_prompt (`str` or `List[str]`, *optional*):
+                The prompt or prompts to guide what to not include in image generation. If not defined, you need to
+                pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
+            num_images_per_prompt (`int`, *optional*, defaults to 1):
+                The number of images to generate per prompt.
+            generator (`torch.Generator`, *optional*):
+                A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
+                generation deterministic.
+            prompt_embeds (`torch.FloatTensor`, *optional*):
+                Pre-generated text embeddings. Can be used to easily tweak text inputs (prompt weighting). If not
+                provided, text embeddings are generated from the `prompt` input argument. A single vector from the
+                pooled and projected final hidden states.
+            encoder_hidden_states (`torch.FloatTensor`, *optional*):
+                Pre-generated penultimate hidden states from the text encoder providing additional text conditioning.
+            negative_prompt_embeds (`torch.FloatTensor`, *optional*):
+                Pre-generated negative text embeddings. Can be used to easily tweak text inputs (prompt weighting). If
+                not provided, `negative_prompt_embeds` are generated from the `negative_prompt` input argument.
+            negative_encoder_hidden_states (`torch.FloatTensor`, *optional*):
+                Analogous to `encoder_hidden_states` for the positive prompt.
+            output_type (`str`, *optional*, defaults to `"pil"`):
+                The output format of the generated image. Choose between `PIL.Image` or `np.array`.
+            return_dict (`bool`, *optional*, defaults to `True`):
+                Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
+                plain tuple.
+            callback (`Callable`, *optional*):
+                A function that calls every `callback_steps` steps during inference. The function is called with the
+                following arguments: `callback(step: int, timestep: int, latents: torch.FloatTensor)`.
+            callback_steps (`int`, *optional*, defaults to 1):
+                The frequency at which the `callback` function is called. If not specified, the callback is called at
+                every step.
+            cross_attention_kwargs (`dict`, *optional*):
+                A kwargs dictionary that if specified is passed along to the [`AttentionProcessor`] as defined in
+                [`self.processor`](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py).
+            micro_conditioning_aesthetic_score (`int`, *optional*, defaults to 6):
+                The targeted aesthetic score according to the laion aesthetic classifier. See https://laion.ai/blog/laion-aesthetics/
+                and the micro-conditioning section of https://arxiv.org/abs/2307.01952.
+            micro_conditioning_crop_coord (`Tuple[int]`, *optional*, defaults to (0, 0)):
+                The targeted height, width crop coordinates. See the micro-conditioning section of https://arxiv.org/abs/2307.01952.
+            temperature (`Union[int, Tuple[int, int], List[int]]`, *optional*, defaults to (2, 0)):
+                Configures the temperature scheduler on `self.scheduler` see `AmusedScheduler#set_timesteps`.
+
+        Examples:
+
+        Returns:
+            [`~pipelines.pipeline_utils.ImagePipelineOutput`] or `tuple`:
+                If `return_dict` is `True`, [`~pipelines.pipeline_utils.ImagePipelineOutput`] is returned, otherwise a
+                `tuple` is returned where the first element is a list with the generated images.
+        """
+
+        if (prompt_embeds is not None and encoder_hidden_states is None) or (
+            prompt_embeds is None and encoder_hidden_states is not None
+        ):
+            raise ValueError("pass either both `prompt_embeds` and `encoder_hidden_states` or neither")
+
+        if (negative_prompt_embeds is not None and negative_encoder_hidden_states is None) or (
+            negative_prompt_embeds is None and negative_encoder_hidden_states is not None
+        ):
+            raise ValueError(
+                "pass either both `negatve_prompt_embeds` and `negative_encoder_hidden_states` or neither"
+            )
+
+        if (prompt is None and prompt_embeds is None) or (prompt is not None and prompt_embeds is not None):
+            raise ValueError("pass only one of `prompt` or `prompt_embeds`")
+
+        if isinstance(prompt, str):
+            prompt = [prompt]
+
+        if prompt is not None:
+            batch_size = len(prompt)
+        else:
+            batch_size = prompt_embeds.shape[0]
+
+        batch_size = batch_size * num_images_per_prompt
+
+        if prompt_embeds is None:
+            input_ids = self.tokenizer(
+                prompt,
+                return_tensors="pt",
+                padding="max_length",
+                truncation=True,
+                max_length=self.tokenizer.model_max_length,
+            ).input_ids.to(self._execution_device)
+
+            outputs = self.text_encoder(input_ids, return_dict=True, output_hidden_states=True)
+            prompt_embeds = outputs.text_embeds
+            encoder_hidden_states = outputs.hidden_states[-2]
+
+        prompt_embeds = prompt_embeds.repeat(num_images_per_prompt, 1)
+        encoder_hidden_states = encoder_hidden_states.repeat(num_images_per_prompt, 1, 1)
+
+        if guidance_scale > 1.0:
+            if negative_prompt_embeds is None:
+                if negative_prompt is None:
+                    negative_prompt = [""] * len(prompt)
+
+                if isinstance(negative_prompt, str):
+                    negative_prompt = [negative_prompt]
+
+                input_ids = self.tokenizer(
+                    negative_prompt,
+                    return_tensors="pt",
+                    padding="max_length",
+                    truncation=True,
+                    max_length=self.tokenizer.model_max_length,
+                ).input_ids.to(self._execution_device)
+
+                outputs = self.text_encoder(input_ids, return_dict=True, output_hidden_states=True)
+                negative_prompt_embeds = outputs.text_embeds
+                negative_encoder_hidden_states = outputs.hidden_states[-2]
+
+            negative_prompt_embeds = negative_prompt_embeds.repeat(num_images_per_prompt, 1)
+            negative_encoder_hidden_states = negative_encoder_hidden_states.repeat(num_images_per_prompt, 1, 1)
+
+            prompt_embeds = torch.concat([negative_prompt_embeds, prompt_embeds])
+            encoder_hidden_states = torch.concat([negative_encoder_hidden_states, encoder_hidden_states])
+
+        image = self.image_processor.preprocess(image)
+
+        height, width = image.shape[-2:]
+
+        # Note that the micro conditionings _do_ flip the order of width, height for the original size
+        # and the crop coordinates. This is how it was done in the original code base
+        micro_conds = torch.tensor(
+            [
+                width,
+                height,
+                micro_conditioning_crop_coord[0],
+                micro_conditioning_crop_coord[1],
+                micro_conditioning_aesthetic_score,
+            ],
+            device=self._execution_device,
+            dtype=encoder_hidden_states.dtype,
+        )
+
+        micro_conds = micro_conds.unsqueeze(0)
+        micro_conds = micro_conds.expand(2 * batch_size if guidance_scale > 1.0 else batch_size, -1)
+
+        self.scheduler.set_timesteps(num_inference_steps, temperature, self._execution_device)
+        num_inference_steps = int(len(self.scheduler.timesteps) * strength)
+        start_timestep_idx = len(self.scheduler.timesteps) - num_inference_steps
+
+        needs_upcasting = self.vqvae.dtype == torch.float16 and self.vqvae.config.force_upcast
+
+        if needs_upcasting:
+            self.vqvae.float()
+
+        latents = self.vqvae.encode(image.to(dtype=self.vqvae.dtype, device=self._execution_device)).latents
+        latents_bsz, channels, latents_height, latents_width = latents.shape
+        latents = self.vqvae.quantize(latents)[2][2].reshape(latents_bsz, latents_height, latents_width)
+        latents = self.scheduler.add_noise(
+            latents, self.scheduler.timesteps[start_timestep_idx - 1], generator=generator
+        )
+        latents = latents.repeat(num_images_per_prompt, 1, 1)
+
+        with self.progress_bar(total=num_inference_steps) as progress_bar:
+            for i in range(start_timestep_idx, len(self.scheduler.timesteps)):
+                timestep = self.scheduler.timesteps[i]
+
+                if guidance_scale > 1.0:
+                    model_input = torch.cat([latents] * 2)
+                else:
+                    model_input = latents
+
+                model_output = self.transformer(
+                    model_input,
+                    micro_conds=micro_conds,
+                    pooled_text_emb=prompt_embeds,
+                    encoder_hidden_states=encoder_hidden_states,
+                    cross_attention_kwargs=cross_attention_kwargs,
+                )
+
+                if guidance_scale > 1.0:
+                    uncond_logits, cond_logits = model_output.chunk(2)
+                    model_output = uncond_logits + guidance_scale * (cond_logits - uncond_logits)
+
+                latents = self.scheduler.step(
+                    model_output=model_output,
+                    timestep=timestep,
+                    sample=latents,
+                    generator=generator,
+                ).prev_sample
+
+                if i == len(self.scheduler.timesteps) - 1 or ((i + 1) % self.scheduler.order == 0):
+                    progress_bar.update()
+                    if callback is not None and i % callback_steps == 0:
+                        step_idx = i // getattr(self.scheduler, "order", 1)
+                        callback(step_idx, timestep, latents)
+
+        if output_type == "latent":
+            output = latents
+        else:
+            output = self.vqvae.decode(
+                latents,
+                force_not_quantize=True,
+                shape=(
+                    batch_size,
+                    height // self.vae_scale_factor,
+                    width // self.vae_scale_factor,
+                    self.vqvae.config.latent_channels,
+                ),
+            ).sample.clip(0, 1)
+            output = self.image_processor.postprocess(output, output_type)
+
+            if needs_upcasting:
+                self.vqvae.half()
+
+        self.maybe_free_model_hooks()
+
+        if not return_dict:
+            return (output,)
+
+        return ImagePipelineOutput(output)

src/diffusers/pipelines/amused/pipeline_amused_inpaint.py

@@ -0,0 +1,378 @@
+# Copyright 2023 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+from typing import Any, Callable, Dict, List, Optional, Tuple, Union
+
+import torch
+from transformers import CLIPTextModelWithProjection, CLIPTokenizer
+
+from ...image_processor import PipelineImageInput, VaeImageProcessor
+from ...models import UVit2DModel, VQModel
+from ...schedulers import AmusedScheduler
+from ...utils import replace_example_docstring
+from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
+
+
+EXAMPLE_DOC_STRING = """
+    Examples:
+        ```py
+        >>> import torch
+        >>> from diffusers import AmusedInpaintPipeline
+        >>> from diffusers.utils import load_image
+
+        >>> pipe = AmusedInpaintPipeline.from_pretrained(
+        ...     "huggingface/amused-512", variant="fp16", torch_dtype=torch.float16
+        ... )
+        >>> pipe = pipe.to("cuda")
+
+        >>> prompt = "fall mountains"
+        >>> input_image = (
+        ...     load_image(
+        ...         "https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1.jpg"
+        ...     )
+        ...     .resize((512, 512))
+        ...     .convert("RGB")
+        ... )
+        >>> mask = (
+        ...     load_image(
+        ...         "https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1_mask.png"
+        ...     )
+        ...     .resize((512, 512))
+        ...     .convert("L")
+        ... )
+        >>> pipe(prompt, input_image, mask).images[0].save("out.png")
+        ```
+"""
+
+
+class AmusedInpaintPipeline(DiffusionPipeline):
+    image_processor: VaeImageProcessor
+    vqvae: VQModel
+    tokenizer: CLIPTokenizer
+    text_encoder: CLIPTextModelWithProjection
+    transformer: UVit2DModel
+    scheduler: AmusedScheduler
+
+    model_cpu_offload_seq = "text_encoder->transformer->vqvae"
+
+    # TODO - when calling self.vqvae.quantize, it uses self.vqvae.quantize.embedding.weight before
+    # the forward method of self.vqvae.quantize, so the hook doesn't get called to move the parameter
+    # off the meta device. There should be a way to fix this instead of just not offloading it
+    _exclude_from_cpu_offload = ["vqvae"]
+
+    def __init__(
+        self,
+        vqvae: VQModel,
+        tokenizer: CLIPTokenizer,
+        text_encoder: CLIPTextModelWithProjection,
+        transformer: UVit2DModel,
+        scheduler: AmusedScheduler,
+    ):
+        super().__init__()
+
+        self.register_modules(
+            vqvae=vqvae,
+            tokenizer=tokenizer,
+            text_encoder=text_encoder,
+            transformer=transformer,
+            scheduler=scheduler,
+        )
+        self.vae_scale_factor = 2 ** (len(self.vqvae.config.block_out_channels) - 1)
+        self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor, do_normalize=False)
+        self.mask_processor = VaeImageProcessor(
+            vae_scale_factor=self.vae_scale_factor,
+            do_normalize=False,
+            do_binarize=True,
+            do_convert_grayscale=True,
+            do_resize=True,
+        )
+        self.scheduler.register_to_config(masking_schedule="linear")
+
+    @torch.no_grad()
+    @replace_example_docstring(EXAMPLE_DOC_STRING)
+    def __call__(
+        self,
+        prompt: Optional[Union[List[str], str]] = None,
+        image: PipelineImageInput = None,
+        mask_image: PipelineImageInput = None,
+        strength: float = 1.0,
+        num_inference_steps: int = 12,
+        guidance_scale: float = 10.0,
+        negative_prompt: Optional[Union[str, List[str]]] = None,
+        num_images_per_prompt: Optional[int] = 1,
+        generator: Optional[torch.Generator] = None,
+        prompt_embeds: Optional[torch.Tensor] = None,
+        encoder_hidden_states: Optional[torch.Tensor] = None,
+        negative_prompt_embeds: Optional[torch.Tensor] = None,
+        negative_encoder_hidden_states: Optional[torch.Tensor] = None,
+        output_type="pil",
+        return_dict: bool = True,
+        callback: Optional[Callable[[int, int, torch.FloatTensor], None]] = None,
+        callback_steps: int = 1,
+        cross_attention_kwargs: Optional[Dict[str, Any]] = None,
+        micro_conditioning_aesthetic_score: int = 6,
+        micro_conditioning_crop_coord: Tuple[int, int] = (0, 0),
+        temperature: Union[int, Tuple[int, int], List[int]] = (2, 0),
+    ):
+        """
+        The call function to the pipeline for generation.
+
+        Args:
+            prompt (`str` or `List[str]`, *optional*):
+                The prompt or prompts to guide image generation. If not defined, you need to pass `prompt_embeds`.
+            image (`torch.FloatTensor`, `PIL.Image.Image`, `np.ndarray`, `List[torch.FloatTensor]`, `List[PIL.Image.Image]`, or `List[np.ndarray]`):
+                `Image`, numpy array or tensor representing an image batch to be used as the starting point. For both
+                numpy array and pytorch tensor, the expected value range is between `[0, 1]` If it's a tensor or a list
+                or tensors, the expected shape should be `(B, C, H, W)` or `(C, H, W)`. If it is a numpy array or a
+                list of arrays, the expected shape should be `(B, H, W, C)` or `(H, W, C)` It can also accept image
+                latents as `image`, but if passing latents directly it is not encoded again.
+            mask_image (`torch.FloatTensor`, `PIL.Image.Image`, `np.ndarray`, `List[torch.FloatTensor]`, `List[PIL.Image.Image]`, or `List[np.ndarray]`):
+                `Image`, numpy array or tensor representing an image batch to mask `image`. White pixels in the mask
+                are repainted while black pixels are preserved. If `mask_image` is a PIL image, it is converted to a
+                single channel (luminance) before use. If it's a numpy array or pytorch tensor, it should contain one
+                color channel (L) instead of 3, so the expected shape for pytorch tensor would be `(B, 1, H, W)`, `(B,
+                H, W)`, `(1, H, W)`, `(H, W)`. And for numpy array would be for `(B, H, W, 1)`, `(B, H, W)`, `(H, W,
+                1)`, or `(H, W)`.
+            strength (`float`, *optional*, defaults to 1.0):
+                Indicates extent to transform the reference `image`. Must be between 0 and 1. `image` is used as a
+                starting point and more noise is added the higher the `strength`. The number of denoising steps depends
+                on the amount of noise initially added. When `strength` is 1, added noise is maximum and the denoising
+                process runs for the full number of iterations specified in `num_inference_steps`. A value of 1
+                essentially ignores `image`.
+            num_inference_steps (`int`, *optional*, defaults to 16):
+                The number of denoising steps. More denoising steps usually lead to a higher quality image at the
+                expense of slower inference.
+            guidance_scale (`float`, *optional*, defaults to 10.0):
+                A higher guidance scale value encourages the model to generate images closely linked to the text
+                `prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
+            negative_prompt (`str` or `List[str]`, *optional*):
+                The prompt or prompts to guide what to not include in image generation. If not defined, you need to
+                pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
+            num_images_per_prompt (`int`, *optional*, defaults to 1):
+                The number of images to generate per prompt.
+            generator (`torch.Generator`, *optional*):
+                A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
+                generation deterministic.
+            prompt_embeds (`torch.FloatTensor`, *optional*):
+                Pre-generated text embeddings. Can be used to easily tweak text inputs (prompt weighting). If not
+                provided, text embeddings are generated from the `prompt` input argument. A single vector from the
+                pooled and projected final hidden states.
+            encoder_hidden_states (`torch.FloatTensor`, *optional*):
+                Pre-generated penultimate hidden states from the text encoder providing additional text conditioning.
+            negative_prompt_embeds (`torch.FloatTensor`, *optional*):
+                Pre-generated negative text embeddings. Can be used to easily tweak text inputs (prompt weighting). If
+                not provided, `negative_prompt_embeds` are generated from the `negative_prompt` input argument.
+            negative_encoder_hidden_states (`torch.FloatTensor`, *optional*):
+                Analogous to `encoder_hidden_states` for the positive prompt.
+            output_type (`str`, *optional*, defaults to `"pil"`):
+                The output format of the generated image. Choose between `PIL.Image` or `np.array`.
+            return_dict (`bool`, *optional*, defaults to `True`):
+                Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
+                plain tuple.
+            callback (`Callable`, *optional*):
+                A function that calls every `callback_steps` steps during inference. The function is called with the
+                following arguments: `callback(step: int, timestep: int, latents: torch.FloatTensor)`.
+            callback_steps (`int`, *optional*, defaults to 1):
+                The frequency at which the `callback` function is called. If not specified, the callback is called at
+                every step.
+            cross_attention_kwargs (`dict`, *optional*):
+                A kwargs dictionary that if specified is passed along to the [`AttentionProcessor`] as defined in
+                [`self.processor`](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py).
+            micro_conditioning_aesthetic_score (`int`, *optional*, defaults to 6):
+                The targeted aesthetic score according to the laion aesthetic classifier. See https://laion.ai/blog/laion-aesthetics/
+                and the micro-conditioning section of https://arxiv.org/abs/2307.01952.
+            micro_conditioning_crop_coord (`Tuple[int]`, *optional*, defaults to (0, 0)):
+                The targeted height, width crop coordinates. See the micro-conditioning section of https://arxiv.org/abs/2307.01952.
+            temperature (`Union[int, Tuple[int, int], List[int]]`, *optional*, defaults to (2, 0)):
+                Configures the temperature scheduler on `self.scheduler` see `AmusedScheduler#set_timesteps`.
+
+        Examples:
+
+        Returns:
+            [`~pipelines.pipeline_utils.ImagePipelineOutput`] or `tuple`:
+                If `return_dict` is `True`, [`~pipelines.pipeline_utils.ImagePipelineOutput`] is returned, otherwise a
+                `tuple` is returned where the first element is a list with the generated images.
+        """
+
+        if (prompt_embeds is not None and encoder_hidden_states is None) or (
+            prompt_embeds is None and encoder_hidden_states is not None
+        ):
+            raise ValueError("pass either both `prompt_embeds` and `encoder_hidden_states` or neither")
+
+        if (negative_prompt_embeds is not None and negative_encoder_hidden_states is None) or (
+            negative_prompt_embeds is None and negative_encoder_hidden_states is not None
+        ):
+            raise ValueError(
+                "pass either both `negatve_prompt_embeds` and `negative_encoder_hidden_states` or neither"
+            )
+
+        if (prompt is None and prompt_embeds is None) or (prompt is not None and prompt_embeds is not None):
+            raise ValueError("pass only one of `prompt` or `prompt_embeds`")
+
+        if isinstance(prompt, str):
+            prompt = [prompt]
+
+        if prompt is not None:
+            batch_size = len(prompt)
+        else:
+            batch_size = prompt_embeds.shape[0]
+
+        batch_size = batch_size * num_images_per_prompt
+
+        if prompt_embeds is None:
+            input_ids = self.tokenizer(
+                prompt,
+                return_tensors="pt",
+                padding="max_length",
+                truncation=True,
+                max_length=self.tokenizer.model_max_length,
+            ).input_ids.to(self._execution_device)
+
+            outputs = self.text_encoder(input_ids, return_dict=True, output_hidden_states=True)
+            prompt_embeds = outputs.text_embeds
+            encoder_hidden_states = outputs.hidden_states[-2]
+
+        prompt_embeds = prompt_embeds.repeat(num_images_per_prompt, 1)
+        encoder_hidden_states = encoder_hidden_states.repeat(num_images_per_prompt, 1, 1)
+
+        if guidance_scale > 1.0:
+            if negative_prompt_embeds is None:
+                if negative_prompt is None:
+                    negative_prompt = [""] * len(prompt)
+
+                if isinstance(negative_prompt, str):
+                    negative_prompt = [negative_prompt]
+
+                input_ids = self.tokenizer(
+                    negative_prompt,
+                    return_tensors="pt",
+                    padding="max_length",
+                    truncation=True,
+                    max_length=self.tokenizer.model_max_length,
+                ).input_ids.to(self._execution_device)
+
+                outputs = self.text_encoder(input_ids, return_dict=True, output_hidden_states=True)
+                negative_prompt_embeds = outputs.text_embeds
+                negative_encoder_hidden_states = outputs.hidden_states[-2]
+
+            negative_prompt_embeds = negative_prompt_embeds.repeat(num_images_per_prompt, 1)
+            negative_encoder_hidden_states = negative_encoder_hidden_states.repeat(num_images_per_prompt, 1, 1)
+
+            prompt_embeds = torch.concat([negative_prompt_embeds, prompt_embeds])
+            encoder_hidden_states = torch.concat([negative_encoder_hidden_states, encoder_hidden_states])
+
+        image = self.image_processor.preprocess(image)
+
+        height, width = image.shape[-2:]
+
+        # Note that the micro conditionings _do_ flip the order of width, height for the original size
+        # and the crop coordinates. This is how it was done in the original code base
+        micro_conds = torch.tensor(
+            [
+                width,
+                height,
+                micro_conditioning_crop_coord[0],
+                micro_conditioning_crop_coord[1],
+                micro_conditioning_aesthetic_score,
+            ],
+            device=self._execution_device,
+            dtype=encoder_hidden_states.dtype,
+        )
+
+        micro_conds = micro_conds.unsqueeze(0)
+        micro_conds = micro_conds.expand(2 * batch_size if guidance_scale > 1.0 else batch_size, -1)
+
+        self.scheduler.set_timesteps(num_inference_steps, temperature, self._execution_device)
+        num_inference_steps = int(len(self.scheduler.timesteps) * strength)
+        start_timestep_idx = len(self.scheduler.timesteps) - num_inference_steps
+
+        needs_upcasting = self.vqvae.dtype == torch.float16 and self.vqvae.config.force_upcast
+
+        if needs_upcasting:
+            self.vqvae.float()
+
+        latents = self.vqvae.encode(image.to(dtype=self.vqvae.dtype, device=self._execution_device)).latents
+        latents_bsz, channels, latents_height, latents_width = latents.shape
+        latents = self.vqvae.quantize(latents)[2][2].reshape(latents_bsz, latents_height, latents_width)
+
+        mask = self.mask_processor.preprocess(
+            mask_image, height // self.vae_scale_factor, width // self.vae_scale_factor
+        )
+        mask = mask.reshape(mask.shape[0], latents_height, latents_width).bool().to(latents.device)
+        latents[mask] = self.scheduler.config.mask_token_id
+
+        starting_mask_ratio = mask.sum() / latents.numel()
+
+        latents = latents.repeat(num_images_per_prompt, 1, 1)
+
+        with self.progress_bar(total=num_inference_steps) as progress_bar:
+            for i in range(start_timestep_idx, len(self.scheduler.timesteps)):
+                timestep = self.scheduler.timesteps[i]
+
+                if guidance_scale > 1.0:
+                    model_input = torch.cat([latents] * 2)
+                else:
+                    model_input = latents
+
+                model_output = self.transformer(
+                    model_input,
+                    micro_conds=micro_conds,
+                    pooled_text_emb=prompt_embeds,
+                    encoder_hidden_states=encoder_hidden_states,
+                    cross_attention_kwargs=cross_attention_kwargs,
+                )
+
+                if guidance_scale > 1.0:
+                    uncond_logits, cond_logits = model_output.chunk(2)
+                    model_output = uncond_logits + guidance_scale * (cond_logits - uncond_logits)
+
+                latents = self.scheduler.step(
+                    model_output=model_output,
+                    timestep=timestep,
+                    sample=latents,
+                    generator=generator,
+                    starting_mask_ratio=starting_mask_ratio,
+                ).prev_sample
+
+                if i == len(self.scheduler.timesteps) - 1 or ((i + 1) % self.scheduler.order == 0):
+                    progress_bar.update()
+                    if callback is not None and i % callback_steps == 0:
+                        step_idx = i // getattr(self.scheduler, "order", 1)
+                        callback(step_idx, timestep, latents)
+
+        if output_type == "latent":
+            output = latents
+        else:
+            output = self.vqvae.decode(
+                latents,
+                force_not_quantize=True,
+                shape=(
+                    batch_size,
+                    height // self.vae_scale_factor,
+                    width // self.vae_scale_factor,
+                    self.vqvae.config.latent_channels,
+                ),
+            ).sample.clip(0, 1)
+            output = self.image_processor.postprocess(output, output_type)
+
+            if needs_upcasting:
+                self.vqvae.half()
+
+        self.maybe_free_model_hooks()
+
+        if not return_dict:
+            return (output,)
+
+        return ImagePipelineOutput(output)

src/diffusers/pipelines/controlnet/pipeline_controlnet.py

@@ -633,7 +633,7 @@ class StableDiffusionControlNetPipeline(
             # When `image` is a nested list:
             # (e.g. [[canny_image_1, pose_image_1], [canny_image_2, pose_image_2]])
             elif any(isinstance(i, list) for i in image):
-                raise ValueError("A single batch of multiple conditionings are supported at the moment.")
+                raise ValueError("A single batch of multiple conditionings is not supported at the moment.")
             elif len(image) != len(self.controlnet.nets):
                 raise ValueError(
                     f"For multiple controlnets: `image` must have the same length as the number of controlnets, but got {len(image)} images and {len(self.controlnet.nets)} ControlNets."
@@ -659,7 +659,7 @@ class StableDiffusionControlNetPipeline(
         ):
             if isinstance(controlnet_conditioning_scale, list):
                 if any(isinstance(i, list) for i in controlnet_conditioning_scale):
-                    raise ValueError("A single batch of multiple conditionings are supported at the moment.")
+                    raise ValueError("A single batch of multiple conditionings is not supported at the moment.")
             elif isinstance(controlnet_conditioning_scale, list) and len(controlnet_conditioning_scale) != len(
                 self.controlnet.nets
             ):

src/diffusers/pipelines/pixart_alpha/pipeline_pixart_alpha.py

@@ -853,6 +853,11 @@ class PixArtAlphaPipeline(DiffusionPipeline):
             aspect_ratio = torch.tensor([float(height / width)]).repeat(batch_size * num_images_per_prompt, 1)
             resolution = resolution.to(dtype=prompt_embeds.dtype, device=device)
             aspect_ratio = aspect_ratio.to(dtype=prompt_embeds.dtype, device=device)
+
+            if do_classifier_free_guidance:
+                resolution = torch.cat([resolution, resolution], dim=0)
+                aspect_ratio = torch.cat([aspect_ratio, aspect_ratio], dim=0)
+
             added_cond_kwargs = {"resolution": resolution, "aspect_ratio": aspect_ratio}
 
         # 7. Denoising loop

src/diffusers/pipelines/stable_diffusion/__init__.py

@@ -40,11 +40,8 @@ else:
     _import_structure["pipeline_stable_diffusion_inpaint_legacy"] = ["StableDiffusionInpaintPipelineLegacy"]
     _import_structure["pipeline_stable_diffusion_instruct_pix2pix"] = ["StableDiffusionInstructPix2PixPipeline"]
     _import_structure["pipeline_stable_diffusion_latent_upscale"] = ["StableDiffusionLatentUpscalePipeline"]
-    _import_structure["pipeline_stable_diffusion_ldm3d"] = ["StableDiffusionLDM3DPipeline"]
     _import_structure["pipeline_stable_diffusion_model_editing"] = ["StableDiffusionModelEditingPipeline"]
-    _import_structure["pipeline_stable_diffusion_panorama"] = ["StableDiffusionPanoramaPipeline"]
     _import_structure["pipeline_stable_diffusion_paradigms"] = ["StableDiffusionParadigmsPipeline"]
-    _import_structure["pipeline_stable_diffusion_sag"] = ["StableDiffusionSAGPipeline"]
     _import_structure["pipeline_stable_diffusion_upscale"] = ["StableDiffusionUpscalePipeline"]
     _import_structure["pipeline_stable_unclip"] = ["StableUnCLIPPipeline"]
     _import_structure["pipeline_stable_unclip_img2img"] = ["StableUnCLIPImg2ImgPipeline"]
@@ -67,37 +64,16 @@ try:
 except OptionalDependencyNotAvailable:
     from ...utils.dummy_torch_and_transformers_objects import (
         StableDiffusionDepth2ImgPipeline,
-        StableDiffusionDiffEditPipeline,
-        StableDiffusionPix2PixZeroPipeline,
     )
 
     _dummy_objects.update(
         {
             "StableDiffusionDepth2ImgPipeline": StableDiffusionDepth2ImgPipeline,
-            "StableDiffusionDiffEditPipeline": StableDiffusionDiffEditPipeline,
-            "StableDiffusionPix2PixZeroPipeline": StableDiffusionPix2PixZeroPipeline,
         }
     )
 else:
     _import_structure["pipeline_stable_diffusion_depth2img"] = ["StableDiffusionDepth2ImgPipeline"]
-    _import_structure["pipeline_stable_diffusion_diffedit"] = ["StableDiffusionDiffEditPipeline"]
-    _import_structure["pipeline_stable_diffusion_pix2pix_zero"] = ["StableDiffusionPix2PixZeroPipeline"]
-try:
-    if not (
-        is_torch_available()
-        and is_transformers_available()
-        and is_k_diffusion_available()
-        and is_k_diffusion_version(">=", "0.0.12")
-    ):
-        raise OptionalDependencyNotAvailable()
-except OptionalDependencyNotAvailable:
-    from ...utils import (
-        dummy_torch_and_transformers_and_k_diffusion_objects,
-    )
 
-    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_and_k_diffusion_objects))
-else:
-    _import_structure["pipeline_stable_diffusion_k_diffusion"] = ["StableDiffusionKDiffusionPipeline"]
 try:
     if not (is_transformers_available() and is_onnx_available()):
         raise OptionalDependencyNotAvailable()
@@ -139,13 +115,6 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
             StableDiffusionPipelineOutput,
             StableDiffusionSafetyChecker,
         )
-        from .pipeline_stable_diffusion_attend_and_excite import (
-            StableDiffusionAttendAndExcitePipeline,
-        )
-        from .pipeline_stable_diffusion_gligen import StableDiffusionGLIGENPipeline
-        from .pipeline_stable_diffusion_gligen_text_image import (
-            StableDiffusionGLIGENTextImagePipeline,
-        )
         from .pipeline_stable_diffusion_img2img import StableDiffusionImg2ImgPipeline
         from .pipeline_stable_diffusion_inpaint import StableDiffusionInpaintPipeline
         from .pipeline_stable_diffusion_instruct_pix2pix import (
@@ -154,9 +123,6 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
         from .pipeline_stable_diffusion_latent_upscale import (
             StableDiffusionLatentUpscalePipeline,
         )
-        from .pipeline_stable_diffusion_ldm3d import StableDiffusionLDM3DPipeline
-        from .pipeline_stable_diffusion_panorama import StableDiffusionPanoramaPipeline
-        from .pipeline_stable_diffusion_sag import StableDiffusionSAGPipeline
         from .pipeline_stable_diffusion_upscale import StableDiffusionUpscalePipeline
         from .pipeline_stable_unclip import StableUnCLIPPipeline
         from .pipeline_stable_unclip_img2img import StableUnCLIPImg2ImgPipeline
@@ -179,31 +145,11 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
         if not (is_transformers_available() and is_torch_available() and is_transformers_version(">=", "4.26.0")):
             raise OptionalDependencyNotAvailable()
     except OptionalDependencyNotAvailable:
-        from ...utils.dummy_torch_and_transformers_objects import (
-            StableDiffusionDepth2ImgPipeline,
-            StableDiffusionDiffEditPipeline,
-            StableDiffusionPix2PixZeroPipeline,
-        )
+        from ...utils.dummy_torch_and_transformers_objects import StableDiffusionDepth2ImgPipeline
     else:
         from .pipeline_stable_diffusion_depth2img import (
             StableDiffusionDepth2ImgPipeline,
         )
-        from .pipeline_stable_diffusion_diffedit import StableDiffusionDiffEditPipeline
-
-    try:
-        if not (
-            is_torch_available()
-            and is_transformers_available()
-            and is_k_diffusion_available()
-            and is_k_diffusion_version(">=", "0.0.12")
-        ):
-            raise OptionalDependencyNotAvailable()
-    except OptionalDependencyNotAvailable:
-        from ...utils.dummy_torch_and_transformers_and_k_diffusion_objects import *
-    else:
-        from .pipeline_stable_diffusion_k_diffusion import (
-            StableDiffusionKDiffusionPipeline,
-        )
 
     try:
         if not (is_transformers_available() and is_onnx_available()):

src/diffusers/pipelines/stable_diffusion_attend_and_excite/__init__.py

@@ -0,0 +1,48 @@
+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    get_objects_from_module,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+
+try:
+    if not (is_transformers_available() and is_torch_available()):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils import dummy_torch_and_transformers_objects  # noqa F403
+
+    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
+else:
+    _import_structure["pipeline_stable_diffusion_attend_and_excite"] = ["StableDiffusionAttendAndExcitePipeline"]
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (is_transformers_available() and is_torch_available()):
+            raise OptionalDependencyNotAvailable()
+
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_objects import *
+    else:
+        from .pipeline_stable_diffusion_attend_and_excite import StableDiffusionAttendAndExcitePipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/stable_diffusion_attend_and_excite/pipeline_stable_diffusion_attend_and_excite.py

@@ -37,8 +37,8 @@ from ...utils import (
 )
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from . import StableDiffusionPipelineOutput
-from .safety_checker import StableDiffusionSafetyChecker
+from ..stable_diffusion import StableDiffusionPipelineOutput
+from ..stable_diffusion.safety_checker import StableDiffusionSafetyChecker
 
 
 logger = logging.get_logger(__name__)

src/diffusers/pipelines/stable_diffusion_diffedit/__init__.py

@@ -0,0 +1,48 @@
+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    get_objects_from_module,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+
+try:
+    if not (is_transformers_available() and is_torch_available()):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils import dummy_torch_and_transformers_objects  # noqa F403
+
+    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
+else:
+    _import_structure["pipeline_stable_diffusion_diffedit"] = ["StableDiffusionDiffEditPipeline"]
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (is_transformers_available() and is_torch_available()):
+            raise OptionalDependencyNotAvailable()
+
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_objects import *
+    else:
+        from .pipeline_stable_diffusion_diffedit import StableDiffusionDiffEditPipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/stable_diffusion_diffedit/pipeline_stable_diffusion_diffedit.py

@@ -40,8 +40,8 @@ from ...utils import (
 )
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from . import StableDiffusionPipelineOutput
-from .safety_checker import StableDiffusionSafetyChecker
+from ..stable_diffusion import StableDiffusionPipelineOutput
+from ..stable_diffusion.safety_checker import StableDiffusionSafetyChecker
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name

src/diffusers/pipelines/stable_diffusion_gligen/__init__.py

@@ -0,0 +1,50 @@
+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    get_objects_from_module,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+
+try:
+    if not (is_transformers_available() and is_torch_available()):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils import dummy_torch_and_transformers_objects  # noqa F403
+
+    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
+else:
+    _import_structure["pipeline_stable_diffusion_gligen"] = ["StableDiffusionGLIGENPipeline"]
+    _import_structure["pipeline_stable_diffusion_gligen_text_image"] = ["StableDiffusionGLIGENTextImagePipeline"]
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (is_transformers_available() and is_torch_available()):
+            raise OptionalDependencyNotAvailable()
+
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_objects import *
+    else:
+        from .pipeline_stable_diffusion_gligen import StableDiffusionGLIGENPipeline
+        from .pipeline_stable_diffusion_gligen_text_image import StableDiffusionGLIGENTextImagePipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/stable_diffusion_gligen/pipeline_stable_diffusion_gligen.py

@@ -36,8 +36,8 @@ from ...utils import (
 )
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from . import StableDiffusionPipelineOutput
-from .safety_checker import StableDiffusionSafetyChecker
+from ..stable_diffusion import StableDiffusionPipelineOutput
+from ..stable_diffusion.safety_checker import StableDiffusionSafetyChecker
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name

src/diffusers/pipelines/stable_diffusion_gligen/pipeline_stable_diffusion_gligen_text_image.py

@@ -35,9 +35,9 @@ from ...schedulers import KarrasDiffusionSchedulers
 from ...utils import USE_PEFT_BACKEND, logging, replace_example_docstring, scale_lora_layers, unscale_lora_layers
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from . import StableDiffusionPipelineOutput
-from .clip_image_project_model import CLIPImageProjection
-from .safety_checker import StableDiffusionSafetyChecker
+from ..stable_diffusion import StableDiffusionPipelineOutput
+from ..stable_diffusion.clip_image_project_model import CLIPImageProjection
+from ..stable_diffusion.safety_checker import StableDiffusionSafetyChecker
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name

src/diffusers/pipelines/stable_diffusion_k_diffusion/__init__.py

@@ -0,0 +1,60 @@
+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    get_objects_from_module,
+    is_k_diffusion_available,
+    is_k_diffusion_version,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+
+try:
+    if not (
+        is_transformers_available()
+        and is_torch_available()
+        and is_k_diffusion_available()
+        and is_k_diffusion_version(">=", "0.0.12")
+    ):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils import dummy_torch_and_transformers_and_k_diffusion_objects  # noqa F403
+
+    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_and_k_diffusion_objects))
+else:
+    _import_structure["pipeline_stable_diffusion_k_diffusion"] = ["StableDiffusionKDiffusionPipeline"]
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (
+            is_transformers_available()
+            and is_torch_available()
+            and is_k_diffusion_available()
+            and is_k_diffusion_version(">=", "0.0.12")
+        ):
+            raise OptionalDependencyNotAvailable()
+
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_and_k_diffusion_objects import *
+    else:
+        from .pipeline_stable_diffusion_k_diffusion import StableDiffusionKDiffusionPipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/stable_diffusion_k_diffusion/pipeline_stable_diffusion_k_diffusion.py

@@ -27,7 +27,7 @@ from ...schedulers import LMSDiscreteScheduler
 from ...utils import USE_PEFT_BACKEND, deprecate, logging, scale_lora_layers, unscale_lora_layers
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from . import StableDiffusionPipelineOutput
+from ..stable_diffusion import StableDiffusionPipelineOutput
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name

src/diffusers/pipelines/stable_diffusion_ldm3d/__init__.py

@@ -0,0 +1,48 @@
+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    get_objects_from_module,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+
+try:
+    if not (is_transformers_available() and is_torch_available()):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils import dummy_torch_and_transformers_objects  # noqa F403
+
+    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
+else:
+    _import_structure["pipeline_stable_diffusion_ldm3d"] = ["StableDiffusionLDM3DPipeline"]
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (is_transformers_available() and is_torch_available()):
+            raise OptionalDependencyNotAvailable()
+
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_objects import *
+    else:
+        from .pipeline_stable_diffusion_ldm3d import StableDiffusionLDM3DPipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/stable_diffusion_ldm3d/pipeline_stable_diffusion_ldm3d.py

@@ -37,7 +37,7 @@ from ...utils import (
 )
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from .safety_checker import StableDiffusionSafetyChecker
+from ..stable_diffusion.safety_checker import StableDiffusionSafetyChecker
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name

src/diffusers/pipelines/stable_diffusion_panorama/__init__.py

@@ -0,0 +1,48 @@
+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    get_objects_from_module,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+
+try:
+    if not (is_transformers_available() and is_torch_available()):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils import dummy_torch_and_transformers_objects  # noqa F403
+
+    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
+else:
+    _import_structure["pipeline_stable_diffusion_panorama"] = ["StableDiffusionPanoramaPipeline"]
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (is_transformers_available() and is_torch_available()):
+            raise OptionalDependencyNotAvailable()
+
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_objects import *
+    else:
+        from .pipeline_stable_diffusion_panorama import StableDiffusionPanoramaPipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/stable_diffusion_panorama/pipeline_stable_diffusion_panorama.py

@@ -33,8 +33,8 @@ from ...utils import (
 )
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from . import StableDiffusionPipelineOutput
-from .safety_checker import StableDiffusionSafetyChecker
+from ..stable_diffusion import StableDiffusionPipelineOutput
+from ..stable_diffusion.safety_checker import StableDiffusionSafetyChecker
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name

src/diffusers/pipelines/stable_diffusion_sag/__init__.py

@@ -0,0 +1,48 @@
+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    get_objects_from_module,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+
+try:
+    if not (is_transformers_available() and is_torch_available()):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils import dummy_torch_and_transformers_objects  # noqa F403
+
+    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
+else:
+    _import_structure["pipeline_stable_diffusion_sag"] = ["StableDiffusionSAGPipeline"]
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (is_transformers_available() and is_torch_available()):
+            raise OptionalDependencyNotAvailable()
+
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_objects import *
+    else:
+        from .pipeline_stable_diffusion_sag import StableDiffusionSAGPipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/stable_diffusion_sag/pipeline_stable_diffusion_sag.py

@@ -34,8 +34,8 @@ from ...utils import (
 )
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from . import StableDiffusionPipelineOutput
-from .safety_checker import StableDiffusionSafetyChecker
+from ..stable_diffusion import StableDiffusionPipelineOutput
+from ..stable_diffusion.safety_checker import StableDiffusionSafetyChecker
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name

src/diffusers/schedulers/__init__.py

@@ -39,6 +39,7 @@ except OptionalDependencyNotAvailable:
 
 else:
     _import_structure["deprecated"] = ["KarrasVeScheduler", "ScoreSdeVpScheduler"]
+    _import_structure["scheduling_amused"] = ["AmusedScheduler"]
     _import_structure["scheduling_consistency_decoder"] = ["ConsistencyDecoderScheduler"]
     _import_structure["scheduling_consistency_models"] = ["CMStochasticIterativeScheduler"]
     _import_structure["scheduling_ddim"] = ["DDIMScheduler"]
@@ -129,6 +130,7 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
         from ..utils.dummy_pt_objects import *  # noqa F403
     else:
         from .deprecated import KarrasVeScheduler, ScoreSdeVpScheduler
+        from .scheduling_amused import AmusedScheduler
         from .scheduling_consistency_decoder import ConsistencyDecoderScheduler
         from .scheduling_consistency_models import CMStochasticIterativeScheduler
         from .scheduling_ddim import DDIMScheduler

src/diffusers/schedulers/scheduling_amused.py

@@ -0,0 +1,162 @@
+import math
+from dataclasses import dataclass
+from typing import List, Optional, Tuple, Union
+
+import torch
+
+from ..configuration_utils import ConfigMixin, register_to_config
+from ..utils import BaseOutput
+from .scheduling_utils import SchedulerMixin
+
+
+def gumbel_noise(t, generator=None):
+    device = generator.device if generator is not None else t.device
+    noise = torch.zeros_like(t, device=device).uniform_(0, 1, generator=generator).to(t.device)
+    return -torch.log((-torch.log(noise.clamp(1e-20))).clamp(1e-20))
+
+
+def mask_by_random_topk(mask_len, probs, temperature=1.0, generator=None):
+    confidence = torch.log(probs.clamp(1e-20)) + temperature * gumbel_noise(probs, generator=generator)
+    sorted_confidence = torch.sort(confidence, dim=-1).values
+    cut_off = torch.gather(sorted_confidence, 1, mask_len.long())
+    masking = confidence < cut_off
+    return masking
+
+
+@dataclass
+class AmusedSchedulerOutput(BaseOutput):
+    """
+    Output class for the scheduler's `step` function output.
+
+    Args:
+        prev_sample (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)` for images):
+            Computed sample `(x_{t-1})` of previous timestep. `prev_sample` should be used as next model input in the
+            denoising loop.
+        pred_original_sample (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)` for images):
+            The predicted denoised sample `(x_{0})` based on the model output from the current timestep.
+            `pred_original_sample` can be used to preview progress or for guidance.
+    """
+
+    prev_sample: torch.FloatTensor
+    pred_original_sample: torch.FloatTensor = None
+
+
+class AmusedScheduler(SchedulerMixin, ConfigMixin):
+    order = 1
+
+    temperatures: torch.Tensor
+
+    @register_to_config
+    def __init__(
+        self,
+        mask_token_id: int,
+        masking_schedule: str = "cosine",
+    ):
+        self.temperatures = None
+        self.timesteps = None
+
+    def set_timesteps(
+        self,
+        num_inference_steps: int,
+        temperature: Union[int, Tuple[int, int], List[int]] = (2, 0),
+        device: Union[str, torch.device] = None,
+    ):
+        self.timesteps = torch.arange(num_inference_steps, device=device).flip(0)
+
+        if isinstance(temperature, (tuple, list)):
+            self.temperatures = torch.linspace(temperature[0], temperature[1], num_inference_steps, device=device)
+        else:
+            self.temperatures = torch.linspace(temperature, 0.01, num_inference_steps, device=device)
+
+    def step(
+        self,
+        model_output: torch.FloatTensor,
+        timestep: torch.long,
+        sample: torch.LongTensor,
+        starting_mask_ratio: int = 1,
+        generator: Optional[torch.Generator] = None,
+        return_dict: bool = True,
+    ) -> Union[AmusedSchedulerOutput, Tuple]:
+        two_dim_input = sample.ndim == 3 and model_output.ndim == 4
+
+        if two_dim_input:
+            batch_size, codebook_size, height, width = model_output.shape
+            sample = sample.reshape(batch_size, height * width)
+            model_output = model_output.reshape(batch_size, codebook_size, height * width).permute(0, 2, 1)
+
+        unknown_map = sample == self.config.mask_token_id
+
+        probs = model_output.softmax(dim=-1)
+
+        device = probs.device
+        probs_ = probs.to(generator.device) if generator is not None else probs  # handles when generator is on CPU
+        if probs_.device.type == "cpu" and probs_.dtype != torch.float32:
+            probs_ = probs_.float()  # multinomial is not implemented for cpu half precision
+        probs_ = probs_.reshape(-1, probs.size(-1))
+        pred_original_sample = torch.multinomial(probs_, 1, generator=generator).to(device=device)
+        pred_original_sample = pred_original_sample[:, 0].view(*probs.shape[:-1])
+        pred_original_sample = torch.where(unknown_map, pred_original_sample, sample)
+
+        if timestep == 0:
+            prev_sample = pred_original_sample
+        else:
+            seq_len = sample.shape[1]
+            step_idx = (self.timesteps == timestep).nonzero()
+            ratio = (step_idx + 1) / len(self.timesteps)
+
+            if self.config.masking_schedule == "cosine":
+                mask_ratio = torch.cos(ratio * math.pi / 2)
+            elif self.config.masking_schedule == "linear":
+                mask_ratio = 1 - ratio
+            else:
+                raise ValueError(f"unknown masking schedule {self.config.masking_schedule}")
+
+            mask_ratio = starting_mask_ratio * mask_ratio
+
+            mask_len = (seq_len * mask_ratio).floor()
+            # do not mask more than amount previously masked
+            mask_len = torch.min(unknown_map.sum(dim=-1, keepdim=True) - 1, mask_len)
+            # mask at least one
+            mask_len = torch.max(torch.tensor([1], device=model_output.device), mask_len)
+
+            selected_probs = torch.gather(probs, -1, pred_original_sample[:, :, None])[:, :, 0]
+            # Ignores the tokens given in the input by overwriting their confidence.
+            selected_probs = torch.where(unknown_map, selected_probs, torch.finfo(selected_probs.dtype).max)
+
+            masking = mask_by_random_topk(mask_len, selected_probs, self.temperatures[step_idx], generator)
+
+            # Masks tokens with lower confidence.
+            prev_sample = torch.where(masking, self.config.mask_token_id, pred_original_sample)
+
+        if two_dim_input:
+            prev_sample = prev_sample.reshape(batch_size, height, width)
+            pred_original_sample = pred_original_sample.reshape(batch_size, height, width)
+
+        if not return_dict:
+            return (prev_sample, pred_original_sample)
+
+        return AmusedSchedulerOutput(prev_sample, pred_original_sample)
+
+    def add_noise(self, sample, timesteps, generator=None):
+        step_idx = (self.timesteps == timesteps).nonzero()
+        ratio = (step_idx + 1) / len(self.timesteps)
+
+        if self.config.masking_schedule == "cosine":
+            mask_ratio = torch.cos(ratio * math.pi / 2)
+        elif self.config.masking_schedule == "linear":
+            mask_ratio = 1 - ratio
+        else:
+            raise ValueError(f"unknown masking schedule {self.config.masking_schedule}")
+
+        mask_indices = (
+            torch.rand(
+                sample.shape, device=generator.device if generator is not None else sample.device, generator=generator
+            ).to(sample.device)
+            < mask_ratio
+        )
+
+        masked_sample = sample.clone()
+
+        masked_sample[mask_indices] = self.config.mask_token_id
+
+        return masked_sample

src/diffusers/schedulers/scheduling_euler_ancestral_discrete.py

@@ -92,6 +92,43 @@ def betas_for_alpha_bar(
     return torch.tensor(betas, dtype=torch.float32)
 
 
+# Copied from diffusers.schedulers.scheduling_ddim.rescale_zero_terminal_snr
+def rescale_zero_terminal_snr(betas):
+    """
+    Rescales betas to have zero terminal SNR Based on https://arxiv.org/pdf/2305.08891.pdf (Algorithm 1)
+
+
+    Args:
+        betas (`torch.FloatTensor`):
+            the betas that the scheduler is being initialized with.
+
+    Returns:
+        `torch.FloatTensor`: rescaled betas with zero terminal SNR
+    """
+    # Convert betas to alphas_bar_sqrt
+    alphas = 1.0 - betas
+    alphas_cumprod = torch.cumprod(alphas, dim=0)
+    alphas_bar_sqrt = alphas_cumprod.sqrt()
+
+    # Store old values.
+    alphas_bar_sqrt_0 = alphas_bar_sqrt[0].clone()
+    alphas_bar_sqrt_T = alphas_bar_sqrt[-1].clone()
+
+    # Shift so the last timestep is zero.
+    alphas_bar_sqrt -= alphas_bar_sqrt_T
+
+    # Scale so the first timestep is back to the old value.
+    alphas_bar_sqrt *= alphas_bar_sqrt_0 / (alphas_bar_sqrt_0 - alphas_bar_sqrt_T)
+
+    # Convert alphas_bar_sqrt to betas
+    alphas_bar = alphas_bar_sqrt**2  # Revert sqrt
+    alphas = alphas_bar[1:] / alphas_bar[:-1]  # Revert cumprod
+    alphas = torch.cat([alphas_bar[0:1], alphas])
+    betas = 1 - alphas
+
+    return betas
+
+
 class EulerAncestralDiscreteScheduler(SchedulerMixin, ConfigMixin):
     """
     Ancestral sampling with Euler method steps.
@@ -122,6 +159,10 @@ class EulerAncestralDiscreteScheduler(SchedulerMixin, ConfigMixin):
             An offset added to the inference steps. You can use a combination of `offset=1` and
             `set_alpha_to_one=False` to make the last step use step 0 for the previous alpha product like in Stable
             Diffusion.
+        rescale_betas_zero_snr (`bool`, defaults to `False`):
+            Whether to rescale the betas to have zero terminal SNR. This enables the model to generate very bright and
+            dark samples instead of limiting it to samples with medium brightness. Loosely related to
+            [`--offset_noise`](https://github.com/huggingface/diffusers/blob/74fd735eb073eb1d774b1ab4154a0876eb82f055/examples/dreambooth/train_dreambooth.py#L506).
     """
 
     _compatibles = [e.name for e in KarrasDiffusionSchedulers]
@@ -138,6 +179,7 @@ class EulerAncestralDiscreteScheduler(SchedulerMixin, ConfigMixin):
         prediction_type: str = "epsilon",
         timestep_spacing: str = "linspace",
         steps_offset: int = 0,
+        rescale_betas_zero_snr: bool = False,
     ):
         if trained_betas is not None:
             self.betas = torch.tensor(trained_betas, dtype=torch.float32)
@@ -152,9 +194,17 @@ class EulerAncestralDiscreteScheduler(SchedulerMixin, ConfigMixin):
         else:
             raise NotImplementedError(f"{beta_schedule} does is not implemented for {self.__class__}")
 
+        if rescale_betas_zero_snr:
+            self.betas = rescale_zero_terminal_snr(self.betas)
+
         self.alphas = 1.0 - self.betas
         self.alphas_cumprod = torch.cumprod(self.alphas, dim=0)
 
+        if rescale_betas_zero_snr:
+            # Close to 0 without being 0 so first sigma is not inf
+            # FP16 smallest positive subnormal works well here
+            self.alphas_cumprod[-1] = 2**-24
+
         sigmas = np.array(((1 - self.alphas_cumprod) / self.alphas_cumprod) ** 0.5)
         sigmas = np.concatenate([sigmas[::-1], [0.0]]).astype(np.float32)
         self.sigmas = torch.from_numpy(sigmas)
@@ -327,6 +377,9 @@ class EulerAncestralDiscreteScheduler(SchedulerMixin, ConfigMixin):
 
         sigma = self.sigmas[self.step_index]
 
+        # Upcast to avoid precision issues when computing prev_sample
+        sample = sample.to(torch.float32)
+
         # 1. compute predicted original sample (x_0) from sigma-scaled predicted noise
         if self.config.prediction_type == "epsilon":
             pred_original_sample = sample - sigma * model_output
@@ -357,6 +410,9 @@ class EulerAncestralDiscreteScheduler(SchedulerMixin, ConfigMixin):
 
         prev_sample = prev_sample + noise * sigma_up
 
+        # Cast sample back to model compatible dtype
+        prev_sample = prev_sample.to(model_output.dtype)
+
         # upon completion increase step index by one
         self._step_index += 1
 

src/diffusers/utils/dummy_pt_objects.py

@@ -317,6 +317,21 @@ class UNetSpatioTemporalConditionModel(metaclass=DummyObject):
         requires_backends(cls, ["torch"])
 
 
+class UVit2DModel(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+    @classmethod
+    def from_config(cls, *args, **kwargs):
+        requires_backends(cls, ["torch"])
+
+    @classmethod
+    def from_pretrained(cls, *args, **kwargs):
+        requires_backends(cls, ["torch"])
+
+
 class VQModel(metaclass=DummyObject):
     _backends = ["torch"]
 
@@ -660,6 +675,21 @@ class ScoreSdeVePipeline(metaclass=DummyObject):
         requires_backends(cls, ["torch"])
 
 
+class AmusedScheduler(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+    @classmethod
+    def from_config(cls, *args, **kwargs):
+        requires_backends(cls, ["torch"])
+
+    @classmethod
+    def from_pretrained(cls, *args, **kwargs):
+        requires_backends(cls, ["torch"])
+
+
 class CMStochasticIterativeScheduler(metaclass=DummyObject):
     _backends = ["torch"]
 

src/diffusers/utils/dummy_torch_and_transformers_objects.py

@@ -32,6 +32,51 @@ class AltDiffusionPipeline(metaclass=DummyObject):
         requires_backends(cls, ["torch", "transformers"])
 
 
+class AmusedImg2ImgPipeline(metaclass=DummyObject):
+    _backends = ["torch", "transformers"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch", "transformers"])
+
+    @classmethod
+    def from_config(cls, *args, **kwargs):
+        requires_backends(cls, ["torch", "transformers"])
+
+    @classmethod
+    def from_pretrained(cls, *args, **kwargs):
+        requires_backends(cls, ["torch", "transformers"])
+
+
+class AmusedInpaintPipeline(metaclass=DummyObject):
+    _backends = ["torch", "transformers"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch", "transformers"])
+
+    @classmethod
+    def from_config(cls, *args, **kwargs):
+        requires_backends(cls, ["torch", "transformers"])
+
+    @classmethod
+    def from_pretrained(cls, *args, **kwargs):
+        requires_backends(cls, ["torch", "transformers"])
+
+
+class AmusedPipeline(metaclass=DummyObject):
+    _backends = ["torch", "transformers"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch", "transformers"])
+
+    @classmethod
+    def from_config(cls, *args, **kwargs):
+        requires_backends(cls, ["torch", "transformers"])
+
+    @classmethod
+    def from_pretrained(cls, *args, **kwargs):
+        requires_backends(cls, ["torch", "transformers"])
+
+
 class AnimateDiffPipeline(metaclass=DummyObject):
     _backends = ["torch", "transformers"]
 

src/diffusers/utils/torch_utils.py

@@ -89,7 +89,7 @@ def is_compiled_module(module) -> bool:
     return isinstance(module, torch._dynamo.eval_frame.OptimizedModule)
 
 
-def fourier_filter(x_in: torch.Tensor, threshold: int, scale: int) -> torch.Tensor:
+def fourier_filter(x_in: "torch.Tensor", threshold: int, scale: int) -> "torch.Tensor":
     """Fourier filter as introduced in FreeU (https://arxiv.org/abs/2309.11497).
 
     This version of the method comes from here:
@@ -121,8 +121,8 @@ def fourier_filter(x_in: torch.Tensor, threshold: int, scale: int) -> torch.Tens
 
 
 def apply_freeu(
-    resolution_idx: int, hidden_states: torch.Tensor, res_hidden_states: torch.Tensor, **freeu_kwargs
-) -> Tuple[torch.Tensor, torch.Tensor]:
+    resolution_idx: int, hidden_states: "torch.Tensor", res_hidden_states: "torch.Tensor", **freeu_kwargs
+) -> Tuple["torch.Tensor", "torch.Tensor"]:
     """Applies the FreeU mechanism as introduced in https:
     //arxiv.org/abs/2309.11497. Adapted from the official code repository: https://github.com/ChenyangSi/FreeU.
 

tests/lora/test_lora_layers_peft.py

@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import copy
+import importlib
 import os
 import tempfile
 import time
@@ -24,6 +25,7 @@ import torch.nn as nn
 import torch.nn.functional as F
 from huggingface_hub import hf_hub_download
 from huggingface_hub.repocard import RepoCard
+from packaging import version
 from transformers import CLIPTextModel, CLIPTextModelWithProjection, CLIPTokenizer
 
 from diffusers import (
@@ -109,12 +111,16 @@ class PeftLoraLoaderMixinTests:
 
     def get_dummy_components(self, scheduler_cls=None):
         scheduler_cls = self.scheduler_cls if scheduler_cls is None else LCMScheduler
+        rank = 4
 
         torch.manual_seed(0)
         unet = UNet2DConditionModel(**self.unet_kwargs)
+
         scheduler = scheduler_cls(**self.scheduler_kwargs)
+
         torch.manual_seed(0)
         vae = AutoencoderKL(**self.vae_kwargs)
+
         text_encoder = CLIPTextModel.from_pretrained("peft-internal-testing/tiny-clip-text-2")
         tokenizer = CLIPTokenizer.from_pretrained("peft-internal-testing/tiny-clip-text-2")
 
@@ -123,11 +129,14 @@ class PeftLoraLoaderMixinTests:
             tokenizer_2 = CLIPTokenizer.from_pretrained("peft-internal-testing/tiny-clip-text-2")
 
         text_lora_config = LoraConfig(
-            r=4, lora_alpha=4, target_modules=["q_proj", "k_proj", "v_proj", "out_proj"], init_lora_weights=False
+            r=rank,
+            lora_alpha=rank,
+            target_modules=["q_proj", "k_proj", "v_proj", "out_proj"],
+            init_lora_weights=False,
         )
 
         unet_lora_config = LoraConfig(
-            r=4, lora_alpha=4, target_modules=["to_q", "to_k", "to_v", "to_out.0"], init_lora_weights=False
+            r=rank, lora_alpha=rank, target_modules=["to_q", "to_k", "to_v", "to_out.0"], init_lora_weights=False
         )
 
         unet_lora_attn_procs, unet_lora_layers = create_unet_lora_layers(unet)
@@ -1395,7 +1404,36 @@ class StableDiffusionXLLoRATests(PeftLoraLoaderMixinTests, unittest.TestCase):
 
 @slow
 @require_torch_gpu
-class LoraIntegrationTests(unittest.TestCase):
+class LoraIntegrationTests(PeftLoraLoaderMixinTests, unittest.TestCase):
+    pipeline_class = StableDiffusionPipeline
+    scheduler_cls = DDIMScheduler
+    scheduler_kwargs = {
+        "beta_start": 0.00085,
+        "beta_end": 0.012,
+        "beta_schedule": "scaled_linear",
+        "clip_sample": False,
+        "set_alpha_to_one": False,
+        "steps_offset": 1,
+    }
+    unet_kwargs = {
+        "block_out_channels": (32, 64),
+        "layers_per_block": 2,
+        "sample_size": 32,
+        "in_channels": 4,
+        "out_channels": 4,
+        "down_block_types": ("DownBlock2D", "CrossAttnDownBlock2D"),
+        "up_block_types": ("CrossAttnUpBlock2D", "UpBlock2D"),
+        "cross_attention_dim": 32,
+    }
+    vae_kwargs = {
+        "block_out_channels": [32, 64],
+        "in_channels": 3,
+        "out_channels": 3,
+        "down_block_types": ["DownEncoderBlock2D", "DownEncoderBlock2D"],
+        "up_block_types": ["UpDecoderBlock2D", "UpDecoderBlock2D"],
+        "latent_channels": 4,
+    }
+
     def tearDown(self):
         import gc
 
@@ -1648,7 +1686,43 @@ class LoraIntegrationTests(unittest.TestCase):
 
 @slow
 @require_torch_gpu
-class LoraSDXLIntegrationTests(unittest.TestCase):
+class LoraSDXLIntegrationTests(PeftLoraLoaderMixinTests, unittest.TestCase):
+    has_two_text_encoders = True
+    pipeline_class = StableDiffusionXLPipeline
+    scheduler_cls = EulerDiscreteScheduler
+    scheduler_kwargs = {
+        "beta_start": 0.00085,
+        "beta_end": 0.012,
+        "beta_schedule": "scaled_linear",
+        "timestep_spacing": "leading",
+        "steps_offset": 1,
+    }
+    unet_kwargs = {
+        "block_out_channels": (32, 64),
+        "layers_per_block": 2,
+        "sample_size": 32,
+        "in_channels": 4,
+        "out_channels": 4,
+        "down_block_types": ("DownBlock2D", "CrossAttnDownBlock2D"),
+        "up_block_types": ("CrossAttnUpBlock2D", "UpBlock2D"),
+        "attention_head_dim": (2, 4),
+        "use_linear_projection": True,
+        "addition_embed_type": "text_time",
+        "addition_time_embed_dim": 8,
+        "transformer_layers_per_block": (1, 2),
+        "projection_class_embeddings_input_dim": 80,  # 6 * 8 + 32
+        "cross_attention_dim": 64,
+    }
+    vae_kwargs = {
+        "block_out_channels": [32, 64],
+        "in_channels": 3,
+        "out_channels": 3,
+        "down_block_types": ["DownEncoderBlock2D", "DownEncoderBlock2D"],
+        "up_block_types": ["UpDecoderBlock2D", "UpDecoderBlock2D"],
+        "latent_channels": 4,
+        "sample_size": 128,
+    }
+
     def tearDown(self):
         import gc
 
@@ -1875,7 +1949,9 @@ class LoraSDXLIntegrationTests(unittest.TestCase):
         ).images
         images_without_fusion = images.flatten()
 
-        self.assertTrue(np.allclose(images_with_fusion, images_without_fusion, atol=1e-3))
+        max_diff = numpy_cosine_similarity_distance(images_with_fusion, images_without_fusion)
+        assert max_diff < 1e-4
+
         release_memory(pipe)
 
     def test_sdxl_1_0_lora_unfusion_effectivity(self):
@@ -1983,10 +2059,26 @@ class LoraSDXLIntegrationTests(unittest.TestCase):
         fused_te_2_state_dict = pipe.text_encoder_2.state_dict()
         unet_state_dict = pipe.unet.state_dict()
 
+        peft_ge_070 = version.parse(importlib.metadata.version("peft")) >= version.parse("0.7.0")
+
+        def remap_key(key, sd):
+            # some keys have moved around for PEFT >= 0.7.0, but they should still be loaded correctly
+            if (key in sd) or (not peft_ge_070):
+                return key
+
+            # instead of linear.weight, we now have linear.base_layer.weight, etc.
+            if key.endswith(".weight"):
+                key = key[:-7] + ".base_layer.weight"
+            elif key.endswith(".bias"):
+                key = key[:-5] + ".base_layer.bias"
+            return key
+
         for key, value in text_encoder_1_sd.items():
+            key = remap_key(key, fused_te_state_dict)
             self.assertTrue(torch.allclose(fused_te_state_dict[key], value))
 
         for key, value in text_encoder_2_sd.items():
+            key = remap_key(key, fused_te_2_state_dict)
             self.assertTrue(torch.allclose(fused_te_2_state_dict[key], value))
 
         for key, value in unet_state_dict.items():

tests/pipelines/amused/test_amused.py

@@ -0,0 +1,181 @@
+# coding=utf-8
+# Copyright 2023 HuggingFace Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import unittest
+
+import numpy as np
+import torch
+from transformers import CLIPTextConfig, CLIPTextModelWithProjection, CLIPTokenizer
+
+from diffusers import AmusedPipeline, AmusedScheduler, UVit2DModel, VQModel
+from diffusers.utils.testing_utils import enable_full_determinism, require_torch_gpu, slow, torch_device
+
+from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_PARAMS
+from ..test_pipelines_common import PipelineTesterMixin
+
+
+enable_full_determinism()
+
+
+class AmusedPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
+    pipeline_class = AmusedPipeline
+    params = TEXT_TO_IMAGE_PARAMS | {"encoder_hidden_states", "negative_encoder_hidden_states"}
+    batch_params = TEXT_TO_IMAGE_BATCH_PARAMS
+
+    def get_dummy_components(self):
+        torch.manual_seed(0)
+        transformer = UVit2DModel(
+            hidden_size=32,
+            use_bias=False,
+            hidden_dropout=0.0,
+            cond_embed_dim=32,
+            micro_cond_encode_dim=2,
+            micro_cond_embed_dim=10,
+            encoder_hidden_size=32,
+            vocab_size=32,
+            codebook_size=32,
+            in_channels=32,
+            block_out_channels=32,
+            num_res_blocks=1,
+            downsample=True,
+            upsample=True,
+            block_num_heads=1,
+            num_hidden_layers=1,
+            num_attention_heads=1,
+            attention_dropout=0.0,
+            intermediate_size=32,
+            layer_norm_eps=1e-06,
+            ln_elementwise_affine=True,
+        )
+        scheduler = AmusedScheduler(mask_token_id=31)
+        torch.manual_seed(0)
+        vqvae = VQModel(
+            act_fn="silu",
+            block_out_channels=[32],
+            down_block_types=[
+                "DownEncoderBlock2D",
+            ],
+            in_channels=3,
+            latent_channels=32,
+            layers_per_block=2,
+            norm_num_groups=32,
+            num_vq_embeddings=32,
+            out_channels=3,
+            sample_size=32,
+            up_block_types=[
+                "UpDecoderBlock2D",
+            ],
+            mid_block_add_attention=False,
+            lookup_from_codebook=True,
+        )
+        torch.manual_seed(0)
+        text_encoder_config = CLIPTextConfig(
+            bos_token_id=0,
+            eos_token_id=2,
+            hidden_size=32,
+            intermediate_size=64,
+            layer_norm_eps=1e-05,
+            num_attention_heads=8,
+            num_hidden_layers=3,
+            pad_token_id=1,
+            vocab_size=1000,
+            projection_dim=32,
+        )
+        text_encoder = CLIPTextModelWithProjection(text_encoder_config)
+        tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
+
+        components = {
+            "transformer": transformer,
+            "scheduler": scheduler,
+            "vqvae": vqvae,
+            "text_encoder": text_encoder,
+            "tokenizer": tokenizer,
+        }
+        return components
+
+    def get_dummy_inputs(self, device, seed=0):
+        if str(device).startswith("mps"):
+            generator = torch.manual_seed(seed)
+        else:
+            generator = torch.Generator(device=device).manual_seed(seed)
+        inputs = {
+            "prompt": "A painting of a squirrel eating a burger",
+            "generator": generator,
+            "num_inference_steps": 2,
+            "output_type": "np",
+            "height": 4,
+            "width": 4,
+        }
+        return inputs
+
+    def test_inference_batch_consistent(self, batch_sizes=[2]):
+        self._test_inference_batch_consistent(batch_sizes=batch_sizes, batch_generator=False)
+
+    @unittest.skip("aMUSEd does not support lists of generators")
+    def test_inference_batch_single_identical(self):
+        ...
+
+
+@slow
+@require_torch_gpu
+class AmusedPipelineSlowTests(unittest.TestCase):
+    def test_amused_256(self):
+        pipe = AmusedPipeline.from_pretrained("huggingface/amused-256")
+        pipe.to(torch_device)
+
+        image = pipe("dog", generator=torch.Generator().manual_seed(0), num_inference_steps=2, output_type="np").images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 256, 256, 3)
+        expected_slice = np.array([0.4011, 0.3992, 0.3790, 0.3856, 0.3772, 0.3711, 0.3919, 0.3850, 0.3625])
+        assert np.abs(image_slice - expected_slice).max() < 3e-3
+
+    def test_amused_256_fp16(self):
+        pipe = AmusedPipeline.from_pretrained("huggingface/amused-256", variant="fp16", torch_dtype=torch.float16)
+        pipe.to(torch_device)
+
+        image = pipe("dog", generator=torch.Generator().manual_seed(0), num_inference_steps=2, output_type="np").images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 256, 256, 3)
+        expected_slice = np.array([0.0554, 0.05129, 0.0344, 0.0452, 0.0476, 0.0271, 0.0495, 0.0527, 0.0158])
+        assert np.abs(image_slice - expected_slice).max() < 7e-3
+
+    def test_amused_512(self):
+        pipe = AmusedPipeline.from_pretrained("huggingface/amused-512")
+        pipe.to(torch_device)
+
+        image = pipe("dog", generator=torch.Generator().manual_seed(0), num_inference_steps=2, output_type="np").images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 512, 512, 3)
+        expected_slice = np.array([0.9960, 0.9960, 0.9946, 0.9980, 0.9947, 0.9932, 0.9960, 0.9961, 0.9947])
+        assert np.abs(image_slice - expected_slice).max() < 3e-3
+
+    def test_amused_512_fp16(self):
+        pipe = AmusedPipeline.from_pretrained("huggingface/amused-512", variant="fp16", torch_dtype=torch.float16)
+        pipe.to(torch_device)
+
+        image = pipe("dog", generator=torch.Generator().manual_seed(0), num_inference_steps=2, output_type="np").images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 512, 512, 3)
+        expected_slice = np.array([0.9983, 1.0, 1.0, 1.0, 1.0, 0.9989, 0.9994, 0.9976, 0.9977])
+        assert np.abs(image_slice - expected_slice).max() < 3e-3

tests/pipelines/amused/test_amused_img2img.py

@@ -0,0 +1,239 @@
+# coding=utf-8
+# Copyright 2023 HuggingFace Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import unittest
+
+import numpy as np
+import torch
+from transformers import CLIPTextConfig, CLIPTextModelWithProjection, CLIPTokenizer
+
+from diffusers import AmusedImg2ImgPipeline, AmusedScheduler, UVit2DModel, VQModel
+from diffusers.utils import load_image
+from diffusers.utils.testing_utils import enable_full_determinism, require_torch_gpu, slow, torch_device
+
+from ..pipeline_params import TEXT_GUIDED_IMAGE_VARIATION_BATCH_PARAMS, TEXT_GUIDED_IMAGE_VARIATION_PARAMS
+from ..test_pipelines_common import PipelineTesterMixin
+
+
+enable_full_determinism()
+
+
+class AmusedImg2ImgPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
+    pipeline_class = AmusedImg2ImgPipeline
+    params = TEXT_GUIDED_IMAGE_VARIATION_PARAMS - {"height", "width", "latents"}
+    batch_params = TEXT_GUIDED_IMAGE_VARIATION_BATCH_PARAMS
+    required_optional_params = PipelineTesterMixin.required_optional_params - {
+        "latents",
+    }
+
+    def get_dummy_components(self):
+        torch.manual_seed(0)
+        transformer = UVit2DModel(
+            hidden_size=32,
+            use_bias=False,
+            hidden_dropout=0.0,
+            cond_embed_dim=32,
+            micro_cond_encode_dim=2,
+            micro_cond_embed_dim=10,
+            encoder_hidden_size=32,
+            vocab_size=32,
+            codebook_size=32,
+            in_channels=32,
+            block_out_channels=32,
+            num_res_blocks=1,
+            downsample=True,
+            upsample=True,
+            block_num_heads=1,
+            num_hidden_layers=1,
+            num_attention_heads=1,
+            attention_dropout=0.0,
+            intermediate_size=32,
+            layer_norm_eps=1e-06,
+            ln_elementwise_affine=True,
+        )
+        scheduler = AmusedScheduler(mask_token_id=31)
+        torch.manual_seed(0)
+        vqvae = VQModel(
+            act_fn="silu",
+            block_out_channels=[32],
+            down_block_types=[
+                "DownEncoderBlock2D",
+            ],
+            in_channels=3,
+            latent_channels=32,
+            layers_per_block=2,
+            norm_num_groups=32,
+            num_vq_embeddings=32,
+            out_channels=3,
+            sample_size=32,
+            up_block_types=[
+                "UpDecoderBlock2D",
+            ],
+            mid_block_add_attention=False,
+            lookup_from_codebook=True,
+        )
+        torch.manual_seed(0)
+        text_encoder_config = CLIPTextConfig(
+            bos_token_id=0,
+            eos_token_id=2,
+            hidden_size=32,
+            intermediate_size=64,
+            layer_norm_eps=1e-05,
+            num_attention_heads=8,
+            num_hidden_layers=3,
+            pad_token_id=1,
+            vocab_size=1000,
+            projection_dim=32,
+        )
+        text_encoder = CLIPTextModelWithProjection(text_encoder_config)
+        tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
+
+        components = {
+            "transformer": transformer,
+            "scheduler": scheduler,
+            "vqvae": vqvae,
+            "text_encoder": text_encoder,
+            "tokenizer": tokenizer,
+        }
+        return components
+
+    def get_dummy_inputs(self, device, seed=0):
+        if str(device).startswith("mps"):
+            generator = torch.manual_seed(seed)
+        else:
+            generator = torch.Generator(device=device).manual_seed(seed)
+        image = torch.full((1, 3, 4, 4), 1.0, dtype=torch.float32, device=device)
+        inputs = {
+            "prompt": "A painting of a squirrel eating a burger",
+            "generator": generator,
+            "num_inference_steps": 2,
+            "output_type": "np",
+            "image": image,
+        }
+        return inputs
+
+    def test_inference_batch_consistent(self, batch_sizes=[2]):
+        self._test_inference_batch_consistent(batch_sizes=batch_sizes, batch_generator=False)
+
+    @unittest.skip("aMUSEd does not support lists of generators")
+    def test_inference_batch_single_identical(self):
+        ...
+
+
+@slow
+@require_torch_gpu
+class AmusedImg2ImgPipelineSlowTests(unittest.TestCase):
+    def test_amused_256(self):
+        pipe = AmusedImg2ImgPipeline.from_pretrained("huggingface/amused-256")
+        pipe.to(torch_device)
+
+        image = (
+            load_image("https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains.jpg")
+            .resize((256, 256))
+            .convert("RGB")
+        )
+
+        image = pipe(
+            "winter mountains",
+            image,
+            generator=torch.Generator().manual_seed(0),
+            num_inference_steps=2,
+            output_type="np",
+        ).images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 256, 256, 3)
+        expected_slice = np.array([0.9993, 1.0, 0.9996, 1.0, 0.9995, 0.9925, 0.9990, 0.9954, 1.0])
+
+        assert np.abs(image_slice - expected_slice).max() < 1e-2
+
+    def test_amused_256_fp16(self):
+        pipe = AmusedImg2ImgPipeline.from_pretrained(
+            "huggingface/amused-256", torch_dtype=torch.float16, variant="fp16"
+        )
+        pipe.to(torch_device)
+
+        image = (
+            load_image("https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains.jpg")
+            .resize((256, 256))
+            .convert("RGB")
+        )
+
+        image = pipe(
+            "winter mountains",
+            image,
+            generator=torch.Generator().manual_seed(0),
+            num_inference_steps=2,
+            output_type="np",
+        ).images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 256, 256, 3)
+        expected_slice = np.array([0.9980, 0.9980, 0.9940, 0.9944, 0.9960, 0.9908, 1.0, 1.0, 0.9986])
+
+        assert np.abs(image_slice - expected_slice).max() < 1e-2
+
+    def test_amused_512(self):
+        pipe = AmusedImg2ImgPipeline.from_pretrained("huggingface/amused-512")
+        pipe.to(torch_device)
+
+        image = (
+            load_image("https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains.jpg")
+            .resize((512, 512))
+            .convert("RGB")
+        )
+
+        image = pipe(
+            "winter mountains",
+            image,
+            generator=torch.Generator().manual_seed(0),
+            num_inference_steps=2,
+            output_type="np",
+        ).images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 512, 512, 3)
+        expected_slice = np.array([0.1344, 0.0985, 0.0, 0.1194, 0.1809, 0.0765, 0.0854, 0.1371, 0.0933])
+        assert np.abs(image_slice - expected_slice).max() < 0.1
+
+    def test_amused_512_fp16(self):
+        pipe = AmusedImg2ImgPipeline.from_pretrained(
+            "huggingface/amused-512", variant="fp16", torch_dtype=torch.float16
+        )
+        pipe.to(torch_device)
+
+        image = (
+            load_image("https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains.jpg")
+            .resize((512, 512))
+            .convert("RGB")
+        )
+
+        image = pipe(
+            "winter mountains",
+            image,
+            generator=torch.Generator().manual_seed(0),
+            num_inference_steps=2,
+            output_type="np",
+        ).images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 512, 512, 3)
+        expected_slice = np.array([0.1536, 0.1767, 0.0227, 0.1079, 0.2400, 0.1427, 0.1511, 0.1564, 0.1542])
+        assert np.abs(image_slice - expected_slice).max() < 0.1

tests/pipelines/amused/test_amused_inpaint.py

@@ -0,0 +1,277 @@
+# coding=utf-8
+# Copyright 2023 HuggingFace Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import unittest
+
+import numpy as np
+import torch
+from transformers import CLIPTextConfig, CLIPTextModelWithProjection, CLIPTokenizer
+
+from diffusers import AmusedInpaintPipeline, AmusedScheduler, UVit2DModel, VQModel
+from diffusers.utils import load_image
+from diffusers.utils.testing_utils import enable_full_determinism, require_torch_gpu, slow, torch_device
+
+from ..pipeline_params import TEXT_GUIDED_IMAGE_INPAINTING_BATCH_PARAMS, TEXT_GUIDED_IMAGE_INPAINTING_PARAMS
+from ..test_pipelines_common import PipelineTesterMixin
+
+
+enable_full_determinism()
+
+
+class AmusedInpaintPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
+    pipeline_class = AmusedInpaintPipeline
+    params = TEXT_GUIDED_IMAGE_INPAINTING_PARAMS - {"width", "height"}
+    batch_params = TEXT_GUIDED_IMAGE_INPAINTING_BATCH_PARAMS
+    required_optional_params = PipelineTesterMixin.required_optional_params - {
+        "latents",
+    }
+
+    def get_dummy_components(self):
+        torch.manual_seed(0)
+        transformer = UVit2DModel(
+            hidden_size=32,
+            use_bias=False,
+            hidden_dropout=0.0,
+            cond_embed_dim=32,
+            micro_cond_encode_dim=2,
+            micro_cond_embed_dim=10,
+            encoder_hidden_size=32,
+            vocab_size=32,
+            codebook_size=32,
+            in_channels=32,
+            block_out_channels=32,
+            num_res_blocks=1,
+            downsample=True,
+            upsample=True,
+            block_num_heads=1,
+            num_hidden_layers=1,
+            num_attention_heads=1,
+            attention_dropout=0.0,
+            intermediate_size=32,
+            layer_norm_eps=1e-06,
+            ln_elementwise_affine=True,
+        )
+        scheduler = AmusedScheduler(mask_token_id=31)
+        torch.manual_seed(0)
+        vqvae = VQModel(
+            act_fn="silu",
+            block_out_channels=[32],
+            down_block_types=[
+                "DownEncoderBlock2D",
+            ],
+            in_channels=3,
+            latent_channels=32,
+            layers_per_block=2,
+            norm_num_groups=32,
+            num_vq_embeddings=32,
+            out_channels=3,
+            sample_size=32,
+            up_block_types=[
+                "UpDecoderBlock2D",
+            ],
+            mid_block_add_attention=False,
+            lookup_from_codebook=True,
+        )
+        torch.manual_seed(0)
+        text_encoder_config = CLIPTextConfig(
+            bos_token_id=0,
+            eos_token_id=2,
+            hidden_size=32,
+            intermediate_size=64,
+            layer_norm_eps=1e-05,
+            num_attention_heads=8,
+            num_hidden_layers=3,
+            pad_token_id=1,
+            vocab_size=1000,
+            projection_dim=32,
+        )
+        text_encoder = CLIPTextModelWithProjection(text_encoder_config)
+        tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
+
+        components = {
+            "transformer": transformer,
+            "scheduler": scheduler,
+            "vqvae": vqvae,
+            "text_encoder": text_encoder,
+            "tokenizer": tokenizer,
+        }
+        return components
+
+    def get_dummy_inputs(self, device, seed=0):
+        if str(device).startswith("mps"):
+            generator = torch.manual_seed(seed)
+        else:
+            generator = torch.Generator(device=device).manual_seed(seed)
+        image = torch.full((1, 3, 4, 4), 1.0, dtype=torch.float32, device=device)
+        mask_image = torch.full((1, 1, 4, 4), 1.0, dtype=torch.float32, device=device)
+        mask_image[0, 0, 0, 0] = 0
+        mask_image[0, 0, 0, 1] = 0
+        inputs = {
+            "prompt": "A painting of a squirrel eating a burger",
+            "generator": generator,
+            "num_inference_steps": 2,
+            "output_type": "np",
+            "image": image,
+            "mask_image": mask_image,
+        }
+        return inputs
+
+    def test_inference_batch_consistent(self, batch_sizes=[2]):
+        self._test_inference_batch_consistent(batch_sizes=batch_sizes, batch_generator=False)
+
+    @unittest.skip("aMUSEd does not support lists of generators")
+    def test_inference_batch_single_identical(self):
+        ...
+
+
+@slow
+@require_torch_gpu
+class AmusedInpaintPipelineSlowTests(unittest.TestCase):
+    def test_amused_256(self):
+        pipe = AmusedInpaintPipeline.from_pretrained("huggingface/amused-256")
+        pipe.to(torch_device)
+
+        image = (
+            load_image("https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1.jpg")
+            .resize((256, 256))
+            .convert("RGB")
+        )
+
+        mask_image = (
+            load_image(
+                "https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1_mask.png"
+            )
+            .resize((256, 256))
+            .convert("L")
+        )
+
+        image = pipe(
+            "winter mountains",
+            image,
+            mask_image,
+            generator=torch.Generator().manual_seed(0),
+            num_inference_steps=2,
+            output_type="np",
+        ).images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 256, 256, 3)
+        expected_slice = np.array([0.0699, 0.0716, 0.0608, 0.0715, 0.0797, 0.0638, 0.0802, 0.0924, 0.0634])
+        assert np.abs(image_slice - expected_slice).max() < 0.1
+
+    def test_amused_256_fp16(self):
+        pipe = AmusedInpaintPipeline.from_pretrained(
+            "huggingface/amused-256", variant="fp16", torch_dtype=torch.float16
+        )
+        pipe.to(torch_device)
+
+        image = (
+            load_image("https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1.jpg")
+            .resize((256, 256))
+            .convert("RGB")
+        )
+
+        mask_image = (
+            load_image(
+                "https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1_mask.png"
+            )
+            .resize((256, 256))
+            .convert("L")
+        )
+
+        image = pipe(
+            "winter mountains",
+            image,
+            mask_image,
+            generator=torch.Generator().manual_seed(0),
+            num_inference_steps=2,
+            output_type="np",
+        ).images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 256, 256, 3)
+        expected_slice = np.array([0.0735, 0.0749, 0.0650, 0.0739, 0.0805, 0.0667, 0.0802, 0.0923, 0.0622])
+        assert np.abs(image_slice - expected_slice).max() < 0.1
+
+    def test_amused_512(self):
+        pipe = AmusedInpaintPipeline.from_pretrained("huggingface/amused-512")
+        pipe.to(torch_device)
+
+        image = (
+            load_image("https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1.jpg")
+            .resize((512, 512))
+            .convert("RGB")
+        )
+
+        mask_image = (
+            load_image(
+                "https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1_mask.png"
+            )
+            .resize((512, 512))
+            .convert("L")
+        )
+
+        image = pipe(
+            "winter mountains",
+            image,
+            mask_image,
+            generator=torch.Generator().manual_seed(0),
+            num_inference_steps=2,
+            output_type="np",
+        ).images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 512, 512, 3)
+        expected_slice = np.array([0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0005, 0.0])
+        assert np.abs(image_slice - expected_slice).max() < 0.05
+
+    def test_amused_512_fp16(self):
+        pipe = AmusedInpaintPipeline.from_pretrained(
+            "huggingface/amused-512", variant="fp16", torch_dtype=torch.float16
+        )
+        pipe.to(torch_device)
+
+        image = (
+            load_image("https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1.jpg")
+            .resize((512, 512))
+            .convert("RGB")
+        )
+
+        mask_image = (
+            load_image(
+                "https://huggingface.co/datasets/diffusers/docs-images/resolve/main/open_muse/mountains_1_mask.png"
+            )
+            .resize((512, 512))
+            .convert("L")
+        )
+
+        image = pipe(
+            "winter mountains",
+            image,
+            mask_image,
+            generator=torch.Generator().manual_seed(0),
+            num_inference_steps=2,
+            output_type="np",
+        ).images
+
+        image_slice = image[0, -3:, -3:, -1].flatten()
+
+        assert image.shape == (1, 512, 512, 3)
+        expected_slice = np.array([0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0025, 0.0])
+        assert np.abs(image_slice - expected_slice).max() < 3e-3

tests/pipelines/pixart/test_pixart.py

@@ -64,7 +64,9 @@ class PixArtAlphaPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
             norm_elementwise_affine=False,
             norm_eps=1e-6,
         )
+        torch.manual_seed(0)
         vae = AutoencoderKL()
+
         scheduler = DDIMScheduler()
         text_encoder = T5EncoderModel.from_pretrained("hf-internal-testing/tiny-random-t5")
 
@@ -186,7 +188,7 @@ class PixArtAlphaPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
         image_slice = image[0, -3:, -3:, -1]
 
         self.assertEqual(image.shape, (1, 8, 8, 3))
-        expected_slice = np.array([0.5303, 0.2658, 0.7979, 0.1182, 0.3304, 0.4608, 0.5195, 0.4261, 0.4675])
+        expected_slice = np.array([0.6319, 0.3526, 0.3806, 0.6327, 0.4639, 0.483, 0.2583, 0.5331, 0.4852])
         max_diff = np.abs(image_slice.flatten() - expected_slice).max()
         self.assertLessEqual(max_diff, 1e-3)
 
@@ -203,7 +205,7 @@ class PixArtAlphaPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
         image_slice = image[0, -3:, -3:, -1]
         self.assertEqual(image.shape, (1, 32, 48, 3))
 
-        expected_slice = np.array([0.3859, 0.2987, 0.2333, 0.5243, 0.6721, 0.4436, 0.5292, 0.5373, 0.4416])
+        expected_slice = np.array([0.6493, 0.537, 0.4081, 0.4762, 0.3695, 0.4711, 0.3026, 0.5218, 0.5263])
         max_diff = np.abs(image_slice.flatten() - expected_slice).max()
         self.assertLessEqual(max_diff, 1e-3)
 
@@ -293,7 +295,7 @@ class PixArtAlphaPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
         image_slice = image[0, -3:, -3:, -1]
 
         self.assertEqual(image.shape, (2, 8, 8, 3))
-        expected_slice = np.array([0.5303, 0.2658, 0.7979, 0.1182, 0.3304, 0.4608, 0.5195, 0.4261, 0.4675])
+        expected_slice = np.array([0.6319, 0.3526, 0.3806, 0.6327, 0.4639, 0.483, 0.2583, 0.5331, 0.4852])
         max_diff = np.abs(image_slice.flatten() - expected_slice).max()
         self.assertLessEqual(max_diff, 1e-3)
 

tests/pipelines/stable_diffusion/test_onnx_stable_diffusion_inpaint_legacy.py

@@ -1,97 +0,0 @@
-# coding=utf-8
-# Copyright 2023 HuggingFace Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import unittest
-
-import numpy as np
-
-from diffusers import OnnxStableDiffusionInpaintPipelineLegacy
-from diffusers.utils.testing_utils import (
-    is_onnx_available,
-    load_image,
-    load_numpy,
-    nightly,
-    require_onnxruntime,
-    require_torch_gpu,
-)
-
-
-if is_onnx_available():
-    import onnxruntime as ort
-
-
-@nightly
-@require_onnxruntime
-@require_torch_gpu
-class StableDiffusionOnnxInpaintLegacyPipelineIntegrationTests(unittest.TestCase):
-    @property
-    def gpu_provider(self):
-        return (
-            "CUDAExecutionProvider",
-            {
-                "gpu_mem_limit": "15000000000",  # 15GB
-                "arena_extend_strategy": "kSameAsRequested",
-            },
-        )
-
-    @property
-    def gpu_options(self):
-        options = ort.SessionOptions()
-        options.enable_mem_pattern = False
-        return options
-
-    def test_inference(self):
-        init_image = load_image(
-            "https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
-            "/in_paint/overture-creations-5sI6fQgYIuo.png"
-        )
-        mask_image = load_image(
-            "https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
-            "/in_paint/overture-creations-5sI6fQgYIuo_mask.png"
-        )
-        expected_image = load_numpy(
-            "https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
-            "/in_paint/red_cat_sitting_on_a_park_bench_onnx.npy"
-        )
-
-        # using the PNDM scheduler by default
-        pipe = OnnxStableDiffusionInpaintPipelineLegacy.from_pretrained(
-            "CompVis/stable-diffusion-v1-4",
-            revision="onnx",
-            safety_checker=None,
-            feature_extractor=None,
-            provider=self.gpu_provider,
-            sess_options=self.gpu_options,
-        )
-        pipe.set_progress_bar_config(disable=None)
-
-        prompt = "A red cat sitting on a park bench"
-
-        generator = np.random.RandomState(0)
-        output = pipe(
-            prompt=prompt,
-            image=init_image,
-            mask_image=mask_image,
-            strength=0.75,
-            guidance_scale=7.5,
-            num_inference_steps=15,
-            generator=generator,
-            output_type="np",
-        )
-
-        image = output.images[0]
-
-        assert image.shape == (512, 512, 3)
-        assert np.abs(expected_image - image).max() < 1e-2

tests/pipelines/test_pipelines_common.py

@@ -437,7 +437,7 @@ class PipelineTesterMixin:
         self._test_inference_batch_consistent(batch_sizes=batch_sizes)
 
     def _test_inference_batch_consistent(
-        self, batch_sizes=[2], additional_params_copy_to_batched_inputs=["num_inference_steps"]
+        self, batch_sizes=[2], additional_params_copy_to_batched_inputs=["num_inference_steps"], batch_generator=True
     ):
         components = self.get_dummy_components()
         pipe = self.pipeline_class(**components)
@@ -472,7 +472,7 @@ class PipelineTesterMixin:
                 else:
                     batched_input[name] = batch_size * [value]
 
-            if "generator" in inputs:
+            if batch_generator and "generator" in inputs:
                 batched_input["generator"] = [self.get_generator(i) for i in range(batch_size)]
 
             if "batch_size" in inputs:

tests/schedulers/test_scheduler_euler_ancestral.py

@@ -37,6 +37,10 @@ class EulerAncestralDiscreteSchedulerTest(SchedulerCommonTest):
         for prediction_type in ["epsilon", "v_prediction"]:
             self.check_over_configs(prediction_type=prediction_type)
 
+    def test_rescale_betas_zero_snr(self):
+        for rescale_betas_zero_snr in [True, False]:
+            self.check_over_configs(rescale_betas_zero_snr=rescale_betas_zero_snr)
+
     def test_full_loop_no_noise(self):
         scheduler_class = self.scheduler_classes[0]
         scheduler_config = self.get_scheduler_config()