update

docs/source/en/api/models/hidream_image_transformer.md

@@ -21,6 +21,22 @@ from diffusers import HiDreamImageTransformer2DModel
 transformer = HiDreamImageTransformer2DModel.from_pretrained("HiDream-ai/HiDream-I1-Full", subfolder="transformer", torch_dtype=torch.bfloat16)
 ```
 
+## Loading GGUF quantized checkpoints for HiDream-I1
+
+GGUF checkpoints for the `HiDreamImageTransformer2DModel` can  be loaded using `~FromOriginalModelMixin.from_single_file`
+
+```python
+import torch
+from diffusers import GGUFQuantizationConfig, HiDreamImageTransformer2DModel
+
+ckpt_path = "https://huggingface.co/city96/HiDream-I1-Dev-gguf/blob/main/hidream-i1-dev-Q2_K.gguf"
+transformer = HiDreamImageTransformer2DModel.from_single_file(
+    ckpt_path,
+    quantization_config=GGUFQuantizationConfig(compute_dtype=torch.bfloat16),
+    torch_dtype=torch.bfloat16
+)
+```
+
 ## HiDreamImageTransformer2DModel
 
 [[autodoc]] HiDreamImageTransformer2DModel

src/diffusers/loaders/single_file_model.py

@@ -31,6 +31,7 @@ from .single_file_utils import (
     convert_autoencoder_dc_checkpoint_to_diffusers,
     convert_controlnet_checkpoint,
     convert_flux_transformer_checkpoint_to_diffusers,
+    convert_hidream_transformer_to_diffusers,
     convert_hunyuan_video_transformer_to_diffusers,
     convert_ldm_unet_checkpoint,
     convert_ldm_vae_checkpoint,
@@ -133,6 +134,10 @@ SINGLE_FILE_LOADABLE_CLASSES = {
         "checkpoint_mapping_fn": convert_wan_vae_to_diffusers,
         "default_subfolder": "vae",
     },
+    "HiDreamImageTransformer2DModel": {
+        "checkpoint_mapping_fn": convert_hidream_transformer_to_diffusers,
+        "default_subfolder": "transformer",
+    },
 }
 
 

src/diffusers/loaders/single_file_utils.py

@@ -126,6 +126,7 @@ CHECKPOINT_KEY_NAMES = {
     ],
     "wan": ["model.diffusion_model.head.modulation", "head.modulation"],
     "wan_vae": "decoder.middle.0.residual.0.gamma",
+    "hidream": "double_stream_blocks.0.block.adaLN_modulation.1.bias",
 }
 
 DIFFUSERS_DEFAULT_PIPELINE_PATHS = {
@@ -190,6 +191,7 @@ DIFFUSERS_DEFAULT_PIPELINE_PATHS = {
     "wan-t2v-1.3B": {"pretrained_model_name_or_path": "Wan-AI/Wan2.1-T2V-1.3B-Diffusers"},
     "wan-t2v-14B": {"pretrained_model_name_or_path": "Wan-AI/Wan2.1-T2V-14B-Diffusers"},
     "wan-i2v-14B": {"pretrained_model_name_or_path": "Wan-AI/Wan2.1-I2V-14B-480P-Diffusers"},
+    "hidream": {"pretrained_model_name_or_path": "HiDream-ai/HiDream-I1-Dev"},
 }
 
 # Use to configure model sample size when original config is provided
@@ -701,6 +703,8 @@ def infer_diffusers_model_type(checkpoint):
     elif CHECKPOINT_KEY_NAMES["wan_vae"] in checkpoint:
         # All Wan models use the same VAE so we can use the same default model repo to fetch the config
         model_type = "wan-t2v-14B"
+    elif CHECKPOINT_KEY_NAMES["hidream"] in checkpoint:
+        model_type = "hidream"
     else:
         model_type = "v1"
 
@@ -3293,3 +3297,12 @@ def convert_wan_vae_to_diffusers(checkpoint, **kwargs):
             converted_state_dict[key] = value
 
     return converted_state_dict
+
+
+def convert_hidream_transformer_to_diffusers(checkpoint, **kwargs):
+    keys = list(checkpoint.keys())
+    for k in keys:
+        if "model.diffusion_model." in k:
+            checkpoint[k.replace("model.diffusion_model.", "")] = checkpoint.pop(k)
+
+    return checkpoint

src/diffusers/models/transformers/transformer_hidream_image.py

@@ -5,7 +5,7 @@ import torch.nn as nn
 import torch.nn.functional as F
 
 from ...configuration_utils import ConfigMixin, register_to_config
-from ...loaders import PeftAdapterMixin
+from ...loaders import FromOriginalModelMixin, PeftAdapterMixin
 from ...models.modeling_outputs import Transformer2DModelOutput
 from ...models.modeling_utils import ModelMixin
 from ...utils import USE_PEFT_BACKEND, deprecate, logging, scale_lora_layers, unscale_lora_layers
@@ -602,7 +602,7 @@ class HiDreamBlock(nn.Module):
         )
 
 
-class HiDreamImageTransformer2DModel(ModelMixin, ConfigMixin, PeftAdapterMixin):
+class HiDreamImageTransformer2DModel(ModelMixin, ConfigMixin, PeftAdapterMixin, FromOriginalModelMixin):
     _supports_gradient_checkpointing = True
     _no_split_modules = ["HiDreamImageTransformerBlock", "HiDreamImageSingleTransformerBlock"]
 

src/diffusers/pipelines/hidream_image/pipeline_hidream_image.py

@@ -36,11 +36,11 @@ EXAMPLE_DOC_STRING = """
     Examples:
         ```py
         >>> import torch
-        >>> from transformers import PreTrainedTokenizerFast, LlamaForCausalLM
-        >>> from diffusers import UniPCMultistepScheduler, HiDreamImagePipeline
+        >>> from transformers import AutoTokenizer, LlamaForCausalLM
+        >>> from diffusers import HiDreamImagePipeline
 
 
-        >>> tokenizer_4 = PreTrainedTokenizerFast.from_pretrained("meta-llama/Meta-Llama-3.1-8B-Instruct")
+        >>> tokenizer_4 = AutoTokenizer.from_pretrained("meta-llama/Meta-Llama-3.1-8B-Instruct")
         >>> text_encoder_4 = LlamaForCausalLM.from_pretrained(
         ...     "meta-llama/Meta-Llama-3.1-8B-Instruct",
         ...     output_hidden_states=True,

tests/quantization/gguf/test_gguf.py

@@ -12,6 +12,7 @@ from diffusers import (
     FluxPipeline,
     FluxTransformer2DModel,
     GGUFQuantizationConfig,
+    HiDreamImageTransformer2DModel,
     SD3Transformer2DModel,
     StableDiffusion3Pipeline,
 )
@@ -549,3 +550,30 @@ class FluxControlLoRAGGUFTests(unittest.TestCase):
 
         max_diff = numpy_cosine_similarity_distance(expected_slice, out_slice)
         self.assertTrue(max_diff < 1e-3)
+
+
+class HiDreamGGUFSingleFileTests(GGUFSingleFileTesterMixin, unittest.TestCase):
+    ckpt_path = "https://huggingface.co/city96/HiDream-I1-Dev-gguf/blob/main/hidream-i1-dev-Q2_K.gguf"
+    torch_dtype = torch.bfloat16
+    model_cls = HiDreamImageTransformer2DModel
+    expected_memory_use_in_gb = 8
+
+    def get_dummy_inputs(self):
+        return {
+            "hidden_states": torch.randn((1, 16, 128, 128), generator=torch.Generator("cpu").manual_seed(0)).to(
+                torch_device, self.torch_dtype
+            ),
+            "encoder_hidden_states_t5": torch.randn(
+                (1, 128, 4096),
+                generator=torch.Generator("cpu").manual_seed(0),
+            ).to(torch_device, self.torch_dtype),
+            "encoder_hidden_states_llama3": torch.randn(
+                (32, 1, 128, 4096),
+                generator=torch.Generator("cpu").manual_seed(0),
+            ).to(torch_device, self.torch_dtype),
+            "pooled_embeds": torch.randn(
+                (1, 2048),
+                generator=torch.Generator("cpu").manual_seed(0),
+            ).to(torch_device, self.torch_dtype),
+            "timesteps": torch.tensor([1]).to(torch_device, self.torch_dtype),
+        }