add a `from_pipe` method to `DiffusionPipeline` (#7241)

* add from_pipe



---------
Co-authored-by: yiyixuxu <yixu310@gmail,com>
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>

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

@@ -179,6 +179,210 @@ stable_diffusion_img2img = StableDiffusionImg2ImgPipeline(
 )
 ```
 
+### Switch loaded pippelines
+
+There are many diffuser pipelines that use the same pre-trained model as [`StableDiffusionPipeline`] and [`StableDiffusionXLPipeline`], but they implement specific features to help you achieve better generation results. This guide will show you how to use the `from_pipe` API to create multiple pipelines without increasing memory usage. By using this approach, you can easily switch between pipelines to use different features.
+
+Let's take an example where we first create a [`StableDiffusionPipeline`] and then reuse the already loaded model components to create a [`StableDiffusionSAGPipeline`] to enhance generation quality.
+
+we will generate an image of a bear eating pizza using Stable Diffusion with the IP-Adapter
+
+```python
+from diffusers import DiffusionPipeline, StableDiffusionSAGPipeline
+import torch
+import gc
+from diffusers.utils import load_image
+from accelerate.utils import compute_module_sizes
+
+base_repo = "SG161222/Realistic_Vision_V6.0_B1_noVAE"
+num_inference_steps = 50
+image = load_image("https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/load_neg_embed.png")
+prompt="bear eats pizza"
+negative_prompt = "wrong white balance, dark, sketches,worst quality,low quality"
+
+pipe_sd = DiffusionPipeline.from_pretrained(base_repo, torch_dtype=torch.float16)
+pipe_sd.load_ip_adapter("h94/IP-Adapter", subfolder="models", weight_name="ip-adapter_sd15.bin")
+pipe_sd.set_ip_adapter_scale(0.6)
+pipe_sd.to("cuda")
+
+generator = torch.Generator(device="cpu").manual_seed(33)
+out_sd = pipe_sd(
+    prompt=prompt,
+    negative_prompt=negative_prompt, 
+    ip_adapter_image=image,
+    num_inference_steps=num_inference_steps,
+    generator=generator,
+).images[0]
+```
+
+let’s take a look at the image and also print out the memory used 
+
+<div class="flex justify-center">
+  <img class="rounded-xl" src="https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/from_pipe_out_sd_0.png"/>
+</div>
+
+```python
+def bytes_to_giga_bytes(bytes):
+    return bytes / 1024 / 1024 / 1024
+print(
+    f"Max memory allocated: {bytes_to_giga_bytes(torch.cuda.max_memory_allocated())} GB"
+)
+```
+
+```bash
+Max memory allocated: 4.406213283538818 GB
+```
+
+Now, we can use `from_pipe` to switch to the SAG pipeline. 
+
+```python
+pipe_sag = StableDiffusionSAGPipeline.from_pipe(
+    pipe_sd,
+)
+```
+
+It already has IP-Adapter loaded so that you can pass the same bear image as `ip_adapter_image`
+
+```python
+generator = torch.Generator(device="cpu").manual_seed(33)
+out_sag = pipe_sag(
+    prompt = prompt, 
+    negative_prompt=negative_prompt, 
+    ip_adapter_image=image,
+    num_inference_steps=num_inference_steps,
+    generator=generator,
+    guidance_scale=1.0,
+    sag_scale=0.75).images[0]
+```
+
+You can see a pretty nice improvement in the output
+
+<div class="flex justify-center">
+  <img class="rounded-xl" src="https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/from_pipe_out_sag_1.png"/>
+</div>
+
+Now we have both `stableDiffusionPipeline` and `StableDiffusionSAGPipeline` co-existing with the same loaded model components;  You can use them interchangeably without additional memory.
+
+```
+print(
+    f"Max memory allocated: {bytes_to_giga_bytes(torch.cuda.max_memory_allocated())} GB"
+)
+```
+
+```bash
+Max memory allocated: 4.406213283538818 GB
+```
+
+Let's unload the IP adapter from the SAG pipeline. It's important to note that methods like `load_ip_adapter` and `unload_ip_adapter` modify the state of the model components. Therefore, when you use these methods on one pipeline, it will affect all other pipelines that share the same model components.
+
+```bash
+pipe_sag.unload_ip_adapter()
+```
+
+If you try to use the Stable Diffusion pipeline with IP adapter again, it will fail
+
+```bash
+generator = torch.Generator(device="cpu").manual_seed(33)
+out_sd = pipe_sd(
+    prompt=prompt,
+    negative_prompt=negative_prompt, 
+    ip_adapter_image=image,
+    num_inference_steps=num_inference_steps,
+    generator=generator,
+).images[0]
+```
+
+```bash
+AttributeError: 'NoneType' object has no attribute 'image_projection_layers'
+```
+
+Please note that the pipeline methods may not function properly on a new pipeline created using the `from_pipe` method. For instance, the `enable_model_cpu_offload` method installs hooks to the model components based on a unique offloading sequence for each pipeline. Therefore, if the models are executed in a different order in the new pipeline, the CPU offloading may not work correctly.
+
+To ensure proper functionality, we recommend re-applying the pipeline methods on the new pipeline created using the `from_pipe` method.
+
+You can also add or subtract model components when you create new pipelines. Let's now create a AnimateDiff pipeline with an additional `MotionAdapter` module
+
+```bash
+from diffusers import AnimateDiffPipeline, MotionAdapter, DDIMScheduler
+from diffusers.utils import export_to_gif
+
+adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2", torch_dtype=torch.float16)
+
+pipe_animate = AnimateDiffPipeline.from_pipe(pipe_sd, motion_adapter=adapter)
+pipe_animate.scheduler = DDIMScheduler.from_config(pipe_animate.scheduler.config, beta_schedule="linear")
+# load ip_adapter again and load lora weights
+pipe_animate.load_ip_adapter("h94/IP-Adapter", subfolder="models", weight_name="ip-adapter_sd15.bin")
+pipe_animate.load_lora_weights("guoyww/animatediff-motion-lora-zoom-out", adapter_name="zoom-out")
+pipe_animate.to("cuda")
+
+generator = torch.Generator(device="cpu").manual_seed(33)
+pipe_animate.set_adapters("zoom-out", adapter_weights=0.75)
+out = pipe_animate(
+    prompt= prompt,
+    num_frames=16,
+    num_inference_steps=num_inference_steps,
+    ip_adapter_image = image,
+    generator=generator,
+).frames[0]
+export_to_gif(out, "out_animate.gif")
+```
+<div class="flex justify-center">
+  <img class="rounded-xl" src="https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/from_pipe_out_animate_3.gif"/>
+</div>
+
+
+When creating multiple pipelines using the `from_pipe` method, it is important to note that the memory requirement will be determined by the pipeline with the highest memory usage. This means that regardless of the number of pipelines you create, the total memory requirement will always be the same as the highest memory requirement among the pipelines.
+
+For example, we have created three pipelines - `stableDiffusionPipeline`, `StableDiffusionSAGPipeline`, and `AnimateDiffPipeline` - and the `AnimateDiffPipeline` has the highest memory requirement, then the total memory usage will be based on the memory requirement of the `AnimateDiffPipeline`. 
+
+Therefore, creating additional pipelines will not add up to the total memory requirement. Each pipeline can be used interchangeably without any additional memory overhead.
+
+
+Did you know that you can use `from_pipe` with a community pipeline? Let me show you an example of using long negative prompt and prompt weighting!
+
+```bash
+pipe_lpw = DiffusionPipeline.from_pipe(
+    pipe_sd,
+    custom_pipeline="lpw_stable_diffusion",
+).to("cuda")
+
+prompt = "best_quality (1girl:1.3) bow bride brown_hair closed_mouth frilled_bow frilled_hair_tubes frills (full_body:1.3) fox_ear hair_bow hair_tubes happy hood japanese_clothes kimono long_sleeves red_bow smile solo tabi uchikake white_kimono wide_sleeves cherry_blossoms"
+neg_prompt = "lowres, bad_anatomy, error_body, error_hair, error_arm, error_hands, bad_hands, error_fingers, bad_fingers, missing_fingers, error_legs, bad_legs, multiple_legs, missing_legs, error_lighting, error_shadow, error_reflection, text, error, extra_digit, fewer_digits, cropped, worst_quality, low_quality, normal_quality, jpeg_artifacts, signature, watermark, username, blurry"
+generator = torch.Generator(device="cpu").manual_seed(33)
+out_lpw = pipe_lpw.text2img(
+    prompt, 
+    negative_prompt=neg_prompt, 
+    width=512,height=512,
+    max_embeddings_multiples=3, 
+    num_inference_steps=num_inference_steps,
+    generator=generator,
+    ).images[0]
+```
+
+<div class="flex justify-center">
+  <img class="rounded-xl" src="https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/from_pipe_out_lpw_4.png"/>
+</div>
+
+let’s run StableDiffusionPipeline with the same inputs to compare:  the result from the long prompt weighting pipeline is more aligned with the text prompt.
+
+```
+generator = torch.Generator(device="cpu").manual_seed(33)
+out_sd = pipe_sd(
+    prompt=prompt,
+    negative_prompt=negative_prompt,
+    generator=generator,
+    num_inference_steps=num_inference_steps,
+).images[0]
+out_sd
+```
+<div class="flex justify-center">
+  <img class="rounded-xl" src="https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/from_pipe_out_sd_5.png"/>
+</div>
+
+
+You can easily switch between different pipelines using the `from_pipe` method, similar to turning on and off a feature on your pipeline. To switch between tasks, you can use the `from_pipe` method with `AutoPipeline`, which automatically identifies the pipeline class based on the task. You can find more information about this feature at the [AutoPipe Guide](https://huggingface.co/docs/diffusers/tutorials/autopipeline).
+
+
 ## Checkpoint variants
 
 A checkpoint variant is usually a checkpoint whose weights are:

examples/community/lpw_stable_diffusion.py

@@ -439,7 +439,9 @@ class StableDiffusionLongPromptWeightingPipeline(
             Model that extracts features from generated images to be used as inputs for the `safety_checker`.
     """
 
+    model_cpu_offload_seq = "text_encoder-->unet->vae"
     _optional_components = ["safety_checker", "feature_extractor"]
+    _exclude_from_cpu_offload = ["safety_checker"]
 
     def __init__(
         self,

src/diffusers/models/unets/unet_motion_model.py

@@ -17,7 +17,7 @@ import torch
 import torch.nn as nn
 import torch.utils.checkpoint
 
-from ...configuration_utils import ConfigMixin, register_to_config
+from ...configuration_utils import ConfigMixin, FrozenDict, register_to_config
 from ...loaders import UNet2DConditionLoadersMixin
 from ...utils import logging
 from ..attention_processor import (
@@ -393,8 +393,11 @@ class UNetMotionModel(ModelMixin, ConfigMixin, UNet2DConditionLoadersMixin):
     ):
         has_motion_adapter = motion_adapter is not None
 
+        if has_motion_adapter:
+            motion_adapter.to(device=unet.device)
+
         # based on https://github.com/guoyww/AnimateDiff/blob/895f3220c06318ea0760131ec70408b466c49333/animatediff/models/unet.py#L459
-        config = unet.config
+        config = dict(unet.config)
         config["_class_name"] = cls.__name__
 
         down_blocks = []
@@ -427,6 +430,7 @@ class UNetMotionModel(ModelMixin, ConfigMixin, UNet2DConditionLoadersMixin):
         if not config.get("num_attention_heads"):
             config["num_attention_heads"] = config["attention_head_dim"]
 
+        config = FrozenDict(config)
         model = cls.from_config(config)
 
         if not load_weights:

src/diffusers/pipelines/animatediff/pipeline_animatediff.py

@@ -131,7 +131,7 @@ class AnimateDiffPipeline(
         vae: AutoencoderKL,
         text_encoder: CLIPTextModel,
         tokenizer: CLIPTokenizer,
-        unet: UNet2DConditionModel,
+        unet: Union[UNet2DConditionModel, UNetMotionModel],
         motion_adapter: MotionAdapter,
         scheduler: Union[
             DDIMScheduler,

src/diffusers/pipelines/pipeline_loading_utils.py

@@ -292,6 +292,39 @@ def get_class_obj_and_candidates(
     return class_obj, class_candidates
 
 
+def _get_custom_pipeline_class(
+    custom_pipeline,
+    repo_id=None,
+    hub_revision=None,
+    class_name=None,
+    cache_dir=None,
+    revision=None,
+):
+    if custom_pipeline.endswith(".py"):
+        path = Path(custom_pipeline)
+        # decompose into folder & file
+        file_name = path.name
+        custom_pipeline = path.parent.absolute()
+    elif repo_id is not None:
+        file_name = f"{custom_pipeline}.py"
+        custom_pipeline = repo_id
+    else:
+        file_name = CUSTOM_PIPELINE_FILE_NAME
+
+    if repo_id is not None and hub_revision is not None:
+        # if we load the pipeline code from the Hub
+        # make sure to overwrite the `revision`
+        revision = hub_revision
+
+    return get_class_from_dynamic_module(
+        custom_pipeline,
+        module_file=file_name,
+        class_name=class_name,
+        cache_dir=cache_dir,
+        revision=revision,
+    )
+
+
 def _get_pipeline_class(
     class_obj,
     config=None,
@@ -304,25 +337,10 @@ def _get_pipeline_class(
     revision=None,
 ):
     if custom_pipeline is not None:
-        if custom_pipeline.endswith(".py"):
-            path = Path(custom_pipeline)
-            # decompose into folder & file
-            file_name = path.name
-            custom_pipeline = path.parent.absolute()
-        elif repo_id is not None:
-            file_name = f"{custom_pipeline}.py"
-            custom_pipeline = repo_id
-        else:
-            file_name = CUSTOM_PIPELINE_FILE_NAME
-
-        if repo_id is not None and hub_revision is not None:
-            # if we load the pipeline code from the Hub
-            # make sure to overwrite the `revision`
-            revision = hub_revision
-
-        return get_class_from_dynamic_module(
+        return _get_custom_pipeline_class(
             custom_pipeline,
-            module_file=file_name,
+            repo_id=repo_id,
+            hub_revision=hub_revision,
             class_name=class_name,
             cache_dir=cache_dir,
             revision=revision,

src/diffusers/pipelines/pipeline_utils.py

@@ -21,7 +21,7 @@ import re
 import sys
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Any, Callable, Dict, List, Optional, Union
+from typing import Any, Callable, Dict, List, Optional, Union, get_args, get_origin
 
 import numpy as np
 import PIL.Image
@@ -43,7 +43,7 @@ from .. import __version__
 from ..configuration_utils import ConfigMixin
 from ..models import AutoencoderKL
 from ..models.attention_processor import FusedAttnProcessor2_0
-from ..models.modeling_utils import _LOW_CPU_MEM_USAGE_DEFAULT
+from ..models.modeling_utils import _LOW_CPU_MEM_USAGE_DEFAULT, ModelMixin
 from ..schedulers.scheduling_utils import SCHEDULER_CONFIG_NAME
 from ..utils import (
     CONFIG_NAME,
@@ -72,6 +72,7 @@ from .pipeline_loading_utils import (
     CUSTOM_PIPELINE_FILE_NAME,
     LOADABLE_CLASSES,
     _fetch_class_library_tuple,
+    _get_custom_pipeline_class,
     _get_pipeline_class,
     _unwrap_model,
     is_safetensors_compatible,
@@ -1475,6 +1476,18 @@ class DiffusionPipeline(ConfigMixin, PushToHubMixin):
 
         return expected_modules, optional_parameters
 
+    @classmethod
+    def _get_signature_types(cls):
+        signature_types = {}
+        for k, v in inspect.signature(cls.__init__).parameters.items():
+            if inspect.isclass(v.annotation):
+                signature_types[k] = (v.annotation,)
+            elif get_origin(v.annotation) == Union:
+                signature_types[k] = get_args(v.annotation)
+            else:
+                logger.warning(f"cannot get type annotation for Parameter {k} of {cls}.")
+        return signature_types
+
     @property
     def components(self) -> Dict[str, Any]:
         r"""
@@ -1653,6 +1666,128 @@ class DiffusionPipeline(ConfigMixin, PushToHubMixin):
         for module in modules:
             module.set_attention_slice(slice_size)
 
+    @classmethod
+    def from_pipe(cls, pipeline, **kwargs):
+        r"""
+        Create a new pipeline from a given pipeline. This method is useful to create a new pipeline from the existing pipeline components without reallocating additional memory.
+
+        Arguments:
+            pipeline (`DiffusionPipeline`):
+                The pipeline from which to create a new pipeline.
+
+        Returns:
+            `DiffusionPipeline`:
+                A new pipeline with the same weights and configurations as `pipeline`.
+
+        Examples:
+
+        ```py
+        >>> from diffusers import StableDiffusionPipeline, StableDiffusionSAGPipeline
+
+        >>> pipe = StableDiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5")
+        >>> new_pipe = StableDiffusionSAGPipeline.from_pipe(pipe)
+        ```
+        """
+
+        original_config = dict(pipeline.config)
+        torch_dtype = kwargs.pop("torch_dtype", None)
+
+        # derive the pipeline class to instantiate
+        custom_pipeline = kwargs.pop("custom_pipeline", None)
+        custom_revision = kwargs.pop("custom_revision", None)
+
+        if custom_pipeline is not None:
+            pipeline_class = _get_custom_pipeline_class(custom_pipeline, revision=custom_revision)
+        else:
+            pipeline_class = cls
+
+        expected_modules, optional_kwargs = cls._get_signature_keys(pipeline_class)
+        # true_optional_modules are optional components with default value in signature so it is ok not to pass them to `__init__`
+        # e.g. `image_encoder` for StableDiffusionPipeline
+        parameters = inspect.signature(cls.__init__).parameters
+        true_optional_modules = set(
+            {k for k, v in parameters.items() if v.default != inspect._empty and k in expected_modules}
+        )
+
+        # get the class of each component based on its type hint
+        # e.g. {"unet": UNet2DConditionModel, "text_encoder": CLIPTextMode}
+        component_types = pipeline_class._get_signature_types()
+
+        pretrained_model_name_or_path = original_config.pop("_name_or_path", None)
+        # allow users pass modules in `kwargs` to override the original pipeline's components
+        passed_class_obj = {k: kwargs.pop(k) for k in expected_modules if k in kwargs}
+
+        original_class_obj = {}
+        for name, component in pipeline.components.items():
+            if name in expected_modules and name not in passed_class_obj:
+                # for model components, we will not switch over if the class does not matches the type hint in the new pipeline's signature
+                if (
+                    not isinstance(component, ModelMixin)
+                    or type(component) in component_types[name]
+                    or (component is None and name in cls._optional_components)
+                ):
+                    original_class_obj[name] = component
+                else:
+                    logger.warn(
+                        f"component {name} is not switched over to new pipeline because type does not match the expected."
+                        f" {name} is {type(component)} while the new pipeline expect {component_types[name]}."
+                        f" please pass the component of the correct type to the new pipeline. `from_pipe(..., {name}={name})`"
+                    )
+
+        # allow users pass optional kwargs to override the original pipelines config attribute
+        passed_pipe_kwargs = {k: kwargs.pop(k) for k in optional_kwargs if k in kwargs}
+        original_pipe_kwargs = {
+            k: original_config[k]
+            for k in original_config.keys()
+            if k in optional_kwargs and k not in passed_pipe_kwargs
+        }
+
+        # config attribute that were not expected by pipeline is stored as its private attribute
+        # (i.e. when the original pipeline was also instantiated with `from_pipe` from another pipeline that has this config)
+        # in this case, we will pass them as optional arguments if they can be accepted by the new pipeline
+        additional_pipe_kwargs = [
+            k[1:]
+            for k in original_config.keys()
+            if k.startswith("_") and k[1:] in optional_kwargs and k[1:] not in passed_pipe_kwargs
+        ]
+        for k in additional_pipe_kwargs:
+            original_pipe_kwargs[k] = original_config.pop(f"_{k}")
+
+        pipeline_kwargs = {
+            **passed_class_obj,
+            **original_class_obj,
+            **passed_pipe_kwargs,
+            **original_pipe_kwargs,
+            **kwargs,
+        }
+
+        # store unused config as private attribute in the new pipeline
+        unused_original_config = {
+            f"{'' if k.startswith('_') else '_'}{k}": v for k, v in original_config.items() if k not in pipeline_kwargs
+        }
+
+        missing_modules = (
+            set(expected_modules)
+            - set(pipeline._optional_components)
+            - set(pipeline_kwargs.keys())
+            - set(true_optional_modules)
+        )
+
+        if len(missing_modules) > 0:
+            raise ValueError(
+                f"Pipeline {pipeline_class} expected {expected_modules}, but only {set(list(passed_class_obj.keys()) + list(original_class_obj.keys()))} were passed"
+            )
+
+        new_pipeline = pipeline_class(**pipeline_kwargs)
+        if pretrained_model_name_or_path is not None:
+            new_pipeline.register_to_config(_name_or_path=pretrained_model_name_or_path)
+        new_pipeline.register_to_config(**unused_original_config)
+
+        if torch_dtype is not None:
+            new_pipeline.to(dtype=torch_dtype)
+
+        return new_pipeline
+
 
 class StableDiffusionMixin:
     r"""

src/diffusers/pipelines/stable_diffusion_attend_and_excite/pipeline_stable_diffusion_attend_and_excite.py

@@ -902,6 +902,7 @@ class StableDiffusionAttendAndExcitePipeline(DiffusionPipeline, StableDiffusionM
         if attn_res is None:
             attn_res = int(np.ceil(width / 32)), int(np.ceil(height / 32))
         self.attention_store = AttentionStore(attn_res)
+        original_attn_proc = self.unet.attn_processors
         self.register_attention_control()
 
         # default config for step size from original repo
@@ -1016,6 +1017,8 @@ class StableDiffusionAttendAndExcitePipeline(DiffusionPipeline, StableDiffusionM
 
         image = self.image_processor.postprocess(image, output_type=output_type, do_denormalize=do_denormalize)
         self.maybe_free_model_hooks()
+        # make sure to set the original attention processors back
+        self.unet.set_attn_processor(original_attn_proc)
 
         if not return_dict:
             return (image, has_nsfw_concept)

src/diffusers/pipelines/stable_diffusion_sag/pipeline_stable_diffusion_sag.py

@@ -750,6 +750,7 @@ class StableDiffusionSAGPipeline(DiffusionPipeline, StableDiffusionMixin, Textua
             )
 
         # 7. Denoising loop
+        original_attn_proc = self.unet.attn_processors
         store_processor = CrossAttnStoreProcessor()
         self.unet.mid_block.attentions[0].transformer_blocks[0].attn1.processor = store_processor
         num_warmup_steps = len(timesteps) - num_inference_steps * self.scheduler.order
@@ -848,6 +849,8 @@ class StableDiffusionSAGPipeline(DiffusionPipeline, StableDiffusionMixin, Textua
         image = self.image_processor.postprocess(image, output_type=output_type, do_denormalize=do_denormalize)
 
         self.maybe_free_model_hooks()
+        # make sure to set the original attention processors back
+        self.unet.set_attn_processor(original_attn_proc)
 
         if not return_dict:
             return (image, has_nsfw_concept)

src/diffusers/pipelines/text_to_video_synthesis/pipeline_text_to_video_zero.py

@@ -329,13 +329,6 @@ class TextToVideoZeroPipeline(DiffusionPipeline, StableDiffusionMixin, TextualIn
             safety_checker=safety_checker,
             feature_extractor=feature_extractor,
         )
-        processor = (
-            CrossFrameAttnProcessor2_0(batch_size=2)
-            if hasattr(F, "scaled_dot_product_attention")
-            else CrossFrameAttnProcessor(batch_size=2)
-        )
-        self.unet.set_attn_processor(processor)
-
         if safety_checker is None and requires_safety_checker:
             logger.warning(
                 f"You have disabled the safety checker for {self.__class__} by passing `safety_checker=None`. Ensure"
@@ -616,6 +609,15 @@ class TextToVideoZeroPipeline(DiffusionPipeline, StableDiffusionMixin, TextualIn
 
         assert num_videos_per_prompt == 1
 
+        # set the processor
+        original_attn_proc = self.unet.attn_processors
+        processor = (
+            CrossFrameAttnProcessor2_0(batch_size=2)
+            if hasattr(F, "scaled_dot_product_attention")
+            else CrossFrameAttnProcessor(batch_size=2)
+        )
+        self.unet.set_attn_processor(processor)
+
         if isinstance(prompt, str):
             prompt = [prompt]
         if isinstance(negative_prompt, str):
@@ -739,6 +741,8 @@ class TextToVideoZeroPipeline(DiffusionPipeline, StableDiffusionMixin, TextualIn
 
         # Offload all models
         self.maybe_free_model_hooks()
+        # make sure to set the original attention processors back
+        self.unet.set_attn_processor(original_attn_proc)
 
         if not return_dict:
             return (image, has_nsfw_concept)

src/diffusers/pipelines/text_to_video_synthesis/pipeline_text_to_video_zero_sdxl.py

@@ -411,14 +411,6 @@ class TextToVideoZeroSDXLPipeline(
         else:
             self.watermark = None
 
-        processor = (
-            CrossFrameAttnProcessor2_0(batch_size=2)
-            if hasattr(F, "scaled_dot_product_attention")
-            else CrossFrameAttnProcessor(batch_size=2)
-        )
-
-        self.unet.set_attn_processor(processor)
-
     # Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_extra_step_kwargs
     def prepare_extra_step_kwargs(self, generator, eta):
         # prepare extra kwargs for the scheduler step, since not all schedulers have the same signature
@@ -1084,6 +1076,15 @@ class TextToVideoZeroSDXLPipeline(
 
         assert num_videos_per_prompt == 1
 
+        # set the processor
+        original_attn_proc = self.unet.attn_processors
+        processor = (
+            CrossFrameAttnProcessor2_0(batch_size=2)
+            if hasattr(F, "scaled_dot_product_attention")
+            else CrossFrameAttnProcessor(batch_size=2)
+        )
+        self.unet.set_attn_processor(processor)
+
         if isinstance(prompt, str):
             prompt = [prompt]
         if isinstance(negative_prompt, str):
@@ -1305,9 +1306,9 @@ class TextToVideoZeroSDXLPipeline(
 
         image = self.image_processor.postprocess(image, output_type=output_type)
 
-        # Offload last model to CPU manually for max memory savings
-        if hasattr(self, "final_offload_hook") and self.final_offload_hook is not None:
-            self.final_offload_hook.offload()
+        self.maybe_free_model_hooks()
+        # make sure to set the original attention processors back
+        self.unet.set_attn_processor(original_attn_proc)
 
         if not return_dict:
             return (image,)

tests/pipelines/animatediff/test_animatediff.py

@@ -18,7 +18,12 @@ from diffusers.utils import is_xformers_available, logging
 from diffusers.utils.testing_utils import numpy_cosine_similarity_distance, require_torch_gpu, slow, torch_device
 
 from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_PARAMS
-from ..test_pipelines_common import IPAdapterTesterMixin, PipelineTesterMixin, SDFunctionTesterMixin
+from ..test_pipelines_common import (
+    IPAdapterTesterMixin,
+    PipelineFromPipeTesterMixin,
+    PipelineTesterMixin,
+    SDFunctionTesterMixin,
+)
 
 
 def to_np(tensor):
@@ -29,7 +34,7 @@ def to_np(tensor):
 
 
 class AnimateDiffPipelineFastTests(
-    IPAdapterTesterMixin, SDFunctionTesterMixin, PipelineTesterMixin, unittest.TestCase
+    IPAdapterTesterMixin, SDFunctionTesterMixin, PipelineTesterMixin, PipelineFromPipeTesterMixin, unittest.TestCase
 ):
     pipeline_class = AnimateDiffPipeline
     params = TEXT_TO_IMAGE_PARAMS

tests/pipelines/animatediff/test_animatediff_video2video.py

@@ -18,7 +18,7 @@ from diffusers.utils import is_xformers_available, logging
 from diffusers.utils.testing_utils import torch_device
 
 from ..pipeline_params import TEXT_TO_IMAGE_PARAMS, VIDEO_TO_VIDEO_BATCH_PARAMS
-from ..test_pipelines_common import IPAdapterTesterMixin, PipelineTesterMixin
+from ..test_pipelines_common import IPAdapterTesterMixin, PipelineFromPipeTesterMixin, PipelineTesterMixin
 
 
 def to_np(tensor):
@@ -28,7 +28,9 @@ def to_np(tensor):
     return tensor
 
 
-class AnimateDiffVideoToVideoPipelineFastTests(IPAdapterTesterMixin, PipelineTesterMixin, unittest.TestCase):
+class AnimateDiffVideoToVideoPipelineFastTests(
+    IPAdapterTesterMixin, PipelineTesterMixin, PipelineFromPipeTesterMixin, unittest.TestCase
+):
     pipeline_class = AnimateDiffVideoToVideoPipeline
     params = TEXT_TO_IMAGE_PARAMS
     batch_params = VIDEO_TO_VIDEO_BATCH_PARAMS

tests/pipelines/pia/test_pia.py

@@ -17,7 +17,7 @@ from diffusers import (
 from diffusers.utils import is_xformers_available, logging
 from diffusers.utils.testing_utils import floats_tensor, torch_device
 
-from ..test_pipelines_common import IPAdapterTesterMixin, PipelineTesterMixin
+from ..test_pipelines_common import IPAdapterTesterMixin, PipelineFromPipeTesterMixin, PipelineTesterMixin
 
 
 def to_np(tensor):
@@ -27,7 +27,7 @@ def to_np(tensor):
     return tensor
 
 
-class PIAPipelineFastTests(IPAdapterTesterMixin, PipelineTesterMixin, unittest.TestCase):
+class PIAPipelineFastTests(IPAdapterTesterMixin, PipelineTesterMixin, PipelineFromPipeTesterMixin, unittest.TestCase):
     pipeline_class = PIAPipeline
     params = frozenset(
         [

tests/pipelines/stable_diffusion_2/test_stable_diffusion_attend_and_excite.py

@@ -35,7 +35,12 @@ from diffusers.utils.testing_utils import (
 )
 
 from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_IMAGE_PARAMS, TEXT_TO_IMAGE_PARAMS
-from ..test_pipelines_common import PipelineKarrasSchedulerTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin
+from ..test_pipelines_common import (
+    PipelineFromPipeTesterMixin,
+    PipelineKarrasSchedulerTesterMixin,
+    PipelineLatentTesterMixin,
+    PipelineTesterMixin,
+)
 
 
 torch.backends.cuda.matmul.allow_tf32 = False
@@ -43,7 +48,11 @@ torch.backends.cuda.matmul.allow_tf32 = False
 
 @skip_mps
 class StableDiffusionAttendAndExcitePipelineFastTests(
-    PipelineLatentTesterMixin, PipelineKarrasSchedulerTesterMixin, PipelineTesterMixin, unittest.TestCase
+    PipelineLatentTesterMixin,
+    PipelineKarrasSchedulerTesterMixin,
+    PipelineTesterMixin,
+    PipelineFromPipeTesterMixin,
+    unittest.TestCase,
 ):
     pipeline_class = StableDiffusionAttendAndExcitePipeline
     test_attention_slicing = False

tests/pipelines/stable_diffusion_2/test_stable_diffusion_diffedit.py

@@ -43,13 +43,15 @@ from diffusers.utils.testing_utils import (
 )
 
 from ..pipeline_params import TEXT_GUIDED_IMAGE_INPAINTING_BATCH_PARAMS, TEXT_GUIDED_IMAGE_INPAINTING_PARAMS
-from ..test_pipelines_common import PipelineLatentTesterMixin, PipelineTesterMixin
+from ..test_pipelines_common import PipelineFromPipeTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin
 
 
 enable_full_determinism()
 
 
-class StableDiffusionDiffEditPipelineFastTests(PipelineLatentTesterMixin, PipelineTesterMixin, unittest.TestCase):
+class StableDiffusionDiffEditPipelineFastTests(
+    PipelineLatentTesterMixin, PipelineTesterMixin, PipelineFromPipeTesterMixin, unittest.TestCase
+):
     pipeline_class = StableDiffusionDiffEditPipeline
     params = TEXT_GUIDED_IMAGE_INPAINTING_PARAMS - {"height", "width", "image"} | {"image_latents"}
     batch_params = TEXT_GUIDED_IMAGE_INPAINTING_BATCH_PARAMS - {"image"} | {"image_latents"}

tests/pipelines/stable_diffusion_adapter/test_stable_diffusion_adapter.py

@@ -46,7 +46,7 @@ from diffusers.utils.testing_utils import (
 )
 
 from ..pipeline_params import TEXT_GUIDED_IMAGE_VARIATION_BATCH_PARAMS, TEXT_GUIDED_IMAGE_VARIATION_PARAMS
-from ..test_pipelines_common import PipelineTesterMixin, assert_mean_pixel_difference
+from ..test_pipelines_common import PipelineFromPipeTesterMixin, PipelineTesterMixin, assert_mean_pixel_difference
 
 
 enable_full_determinism()
@@ -337,7 +337,9 @@ class AdapterTests:
         assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
 
 
-class StableDiffusionFullAdapterPipelineFastTests(AdapterTests, PipelineTesterMixin, unittest.TestCase):
+class StableDiffusionFullAdapterPipelineFastTests(
+    AdapterTests, PipelineTesterMixin, PipelineFromPipeTesterMixin, unittest.TestCase
+):
     def get_dummy_components(self, time_cond_proj_dim=None):
         return super().get_dummy_components("full_adapter", time_cond_proj_dim=time_cond_proj_dim)
 

tests/pipelines/stable_diffusion_gligen/test_stable_diffusion_gligen.py

@@ -33,14 +33,23 @@ from ..pipeline_params import (
     TEXT_TO_IMAGE_IMAGE_PARAMS,
     TEXT_TO_IMAGE_PARAMS,
 )
-from ..test_pipelines_common import PipelineKarrasSchedulerTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin
+from ..test_pipelines_common import (
+    PipelineFromPipeTesterMixin,
+    PipelineKarrasSchedulerTesterMixin,
+    PipelineLatentTesterMixin,
+    PipelineTesterMixin,
+)
 
 
 enable_full_determinism()
 
 
 class GligenPipelineFastTests(
-    PipelineLatentTesterMixin, PipelineKarrasSchedulerTesterMixin, PipelineTesterMixin, unittest.TestCase
+    PipelineLatentTesterMixin,
+    PipelineKarrasSchedulerTesterMixin,
+    PipelineTesterMixin,
+    PipelineFromPipeTesterMixin,
+    unittest.TestCase,
 ):
     pipeline_class = StableDiffusionGLIGENPipeline
     params = TEXT_TO_IMAGE_PARAMS | {"gligen_phrases", "gligen_boxes"}

tests/pipelines/stable_diffusion_gligen_text_image/test_stable_diffusion_gligen_text_image.py

@@ -42,14 +42,23 @@ from ..pipeline_params import (
     TEXT_TO_IMAGE_IMAGE_PARAMS,
     TEXT_TO_IMAGE_PARAMS,
 )
-from ..test_pipelines_common import PipelineKarrasSchedulerTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin
+from ..test_pipelines_common import (
+    PipelineFromPipeTesterMixin,
+    PipelineKarrasSchedulerTesterMixin,
+    PipelineLatentTesterMixin,
+    PipelineTesterMixin,
+)
 
 
 enable_full_determinism()
 
 
 class GligenTextImagePipelineFastTests(
-    PipelineLatentTesterMixin, PipelineKarrasSchedulerTesterMixin, PipelineTesterMixin, unittest.TestCase
+    PipelineLatentTesterMixin,
+    PipelineKarrasSchedulerTesterMixin,
+    PipelineTesterMixin,
+    PipelineFromPipeTesterMixin,
+    unittest.TestCase,
 ):
     pipeline_class = StableDiffusionGLIGENTextImagePipeline
     params = TEXT_TO_IMAGE_PARAMS | {"gligen_phrases", "gligen_images", "gligen_boxes"}

tests/pipelines/stable_diffusion_panorama/test_stable_diffusion_panorama.py

@@ -32,7 +32,12 @@ from diffusers import (
 from diffusers.utils.testing_utils import enable_full_determinism, nightly, require_torch_gpu, skip_mps, torch_device
 
 from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_IMAGE_PARAMS, TEXT_TO_IMAGE_PARAMS
-from ..test_pipelines_common import IPAdapterTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin
+from ..test_pipelines_common import (
+    IPAdapterTesterMixin,
+    PipelineFromPipeTesterMixin,
+    PipelineLatentTesterMixin,
+    PipelineTesterMixin,
+)
 
 
 enable_full_determinism()
@@ -40,7 +45,11 @@ enable_full_determinism()
 
 @skip_mps
 class StableDiffusionPanoramaPipelineFastTests(
-    IPAdapterTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin, unittest.TestCase
+    IPAdapterTesterMixin,
+    PipelineLatentTesterMixin,
+    PipelineTesterMixin,
+    PipelineFromPipeTesterMixin,
+    unittest.TestCase,
 ):
     pipeline_class = StableDiffusionPanoramaPipeline
     params = TEXT_TO_IMAGE_PARAMS

tests/pipelines/stable_diffusion_sag/test_stable_diffusion_sag.py

@@ -32,14 +32,23 @@ from diffusers import (
 from diffusers.utils.testing_utils import enable_full_determinism, nightly, require_torch_gpu, torch_device
 
 from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_IMAGE_PARAMS, TEXT_TO_IMAGE_PARAMS
-from ..test_pipelines_common import IPAdapterTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin
+from ..test_pipelines_common import (
+    IPAdapterTesterMixin,
+    PipelineFromPipeTesterMixin,
+    PipelineLatentTesterMixin,
+    PipelineTesterMixin,
+)
 
 
 enable_full_determinism()
 
 
 class StableDiffusionSAGPipelineFastTests(
-    IPAdapterTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin, unittest.TestCase
+    IPAdapterTesterMixin,
+    PipelineLatentTesterMixin,
+    PipelineTesterMixin,
+    PipelineFromPipeTesterMixin,
+    unittest.TestCase,
 ):
     pipeline_class = StableDiffusionSAGPipeline
     params = TEXT_TO_IMAGE_PARAMS