




"""simple docstring"""


import gc
import random
import unittest

import numpy as np
import torch

from diffusers import DDIMScheduler, KandinskyVaaPipeline, KandinskyVaaPriorPipeline, UNetaDConditionModel, VQModel
from diffusers.utils import floats_tensor, load_numpy, slow, torch_device
from diffusers.utils.testing_utils import enable_full_determinism, require_torch_gpu

from ..test_pipelines_common import PipelineTesterMixin, assert_mean_pixel_difference


enable_full_determinism()






class  lowercase(					__a	,      unittest.TestCase			):







 '''simple docstring'''





 lowercase__			 = KandinskyVaaPipeline
 lowercase__			 = [
     "image_embeds",
     "negative_image_embeds",
 ]
 lowercase__			 = ["image_embeds", "negative_image_embeds"]
 lowercase__			 = [
     "generator",
     "height",
     "width",
     "latents",
     "guidance_scale",
     "num_inference_steps",
     "return_dict",
     "guidance_scale",
     "num_images_per_prompt",
     "output_type",
     "return_dict",
 ]
 lowercase__			 = False


 @property
 def 			UpperCamelCase_       (    self:		Tuple		):




   '''simple docstring'''



   return 32


 @property
 def 			UpperCamelCase_       (    self:		str		):




   '''simple docstring'''



   return 32


 @property
 def 			UpperCamelCase_       (    self:		Tuple		):




   '''simple docstring'''



   return self.time_input_dim


 @property
 def 			UpperCamelCase_       (    self:		List[Any]		):




   '''simple docstring'''



   return self.time_input_dim * 4


 @property
 def 			UpperCamelCase_       (    self:		List[str]		):




   '''simple docstring'''



   return 100


 @property
 def 			UpperCamelCase_       (    self:		str		):




   '''simple docstring'''



   torch.manual_seed(0		)

   _snake_case							:		Tuple								=  {
       """in_channels""": 4,
       # Out channels is double in channels because predicts mean and variance
       """out_channels""": 8,
       """addition_embed_type""": """image""",
       """down_block_types""": ("""ResnetDownsampleBlock2D""", """SimpleCrossAttnDownBlock2D"""),
       """up_block_types""": ("""SimpleCrossAttnUpBlock2D""", """ResnetUpsampleBlock2D"""),
       """mid_block_type""": """UNetMidBlock2DSimpleCrossAttn""",
       """block_out_channels""": (self.block_out_channels_a, self.block_out_channels_a * 2),
       """layers_per_block""": 1,
       """encoder_hid_dim""": self.text_embedder_hidden_size,
       """encoder_hid_dim_type""": """image_proj""",
       """cross_attention_dim""": self.cross_attention_dim,
       """attention_head_dim""": 4,
       """resnet_time_scale_shift""": """scale_shift""",
       """class_embed_type""": None,
   }

   _snake_case							:		Any								=  UNetaDConditionModel(**a_		)
   return model


 @property
 def 			UpperCamelCase_       (    self:		Dict		):




   '''simple docstring'''



   return {
       "block_out_channels": [32, 64],
       "down_block_types": ["DownEncoderBlock2D", "AttnDownEncoderBlock2D"],
       "in_channels": 3,
       "latent_channels": 4,
       "layers_per_block": 1,
       "norm_num_groups": 8,
       "norm_type": "spatial",
       "num_vq_embeddings": 12,
       "out_channels": 3,
       "up_block_types": [
           "AttnUpDecoderBlock2D",
           "UpDecoderBlock2D",
       ],
       "vq_embed_dim": 4,
   }


 @property
 def 			UpperCamelCase_       (    self:		Dict		):




   '''simple docstring'''



   torch.manual_seed(0		)
   _snake_case							:		str								=  VQModel(**self.dummy_movq_kwargs		)
   return model


 def 			UpperCamelCase_       (    self:		Optional[Any]		):




   '''simple docstring'''



   _snake_case							:		str								=  self.dummy_unet
   _snake_case							:		Any								=  self.dummy_movq

   _snake_case							:		Optional[Any]								=  DDIMScheduler(
       num_train_timesteps=1_000,				beta_schedule="""linear""",				beta_start=0.00_085,				beta_end=0.012,				clip_sample=a_,				set_alpha_to_one=a_,				steps_offset=1,				prediction_type="""epsilon""",				thresholding=a_,				)

   _snake_case							:		List[str]								=  {
       """unet""": unet,
       """scheduler""": scheduler,
       """movq""": movq,
   }
   return components


 def 			UpperCamelCase_       (    self:		Optional[int],				a_:		Tuple,				a_:		str=0		):




   '''simple docstring'''



   _snake_case							:		Optional[int]								=  floats_tensor((1, self.text_embedder_hidden_size),				rng=random.Random(a_		)		).to(a_		)
   _snake_case							:		Tuple								=  floats_tensor((1, self.text_embedder_hidden_size),				rng=random.Random(seed + 1		)		).to(
       a_		)
   if str(a_		).startswith("""mps"""		):
     _snake_case							:		Tuple								=  torch.manual_seed(a_		)
   else:
     _snake_case							:		Union[str, Any]								=  torch.Generator(device=a_		).manual_seed(a_		)
   _snake_case							:		List[str]								=  {
       """image_embeds""": image_embeds,
       """negative_image_embeds""": negative_image_embeds,
       """generator""": generator,
       """height""": 64,
       """width""": 64,
       """guidance_scale""": 4.0,
       """num_inference_steps""": 2,
       """output_type""": """np""",
   }
   return inputs


 def 			UpperCamelCase_       (    self:		Union[str, Any]		):




   '''simple docstring'''



   _snake_case							:		List[Any]								=  """cpu"""

   _snake_case							:		Any								=  self.get_dummy_components()

   _snake_case							:		List[Any]								=  self.pipeline_class(**a_		)
   _snake_case							:		Union[str, Any]								=  pipe.to(a_		)

   pipe.set_progress_bar_config(disable=a_		)

   _snake_case							:		str								=  pipe(**self.get_dummy_inputs(a_		)		)
   _snake_case							:		Union[str, Any]								=  output.images

   _snake_case							:		Optional[Any]								=  pipe(
       **self.get_dummy_inputs(a_		),				return_dict=a_,				)[0]

   _snake_case							:		int								=  image[0, -3:, -3:, -1]
   _snake_case							:		List[str]								=  image_from_tuple[0, -3:, -3:, -1]

   assert image.shape == (1, 64, 64, 3)

   _snake_case							:		List[str]								=  np.array(
       [0.6_237_976, 1.0, 0.36_441_332, 1.0, 0.70_639_634, 0.29_877_186, 0.85_652_125, 0.5_216_843, 0.54_454_046]		)

   assert (
       np.abs(image_slice.flatten() - expected_slice		).max() < 1E-2
   ), f" expected_slice {expected_slice}, but got {image_slice.flatten()}"

   assert (
       np.abs(image_from_tuple_slice.flatten() - expected_slice		).max() < 1E-2
   ), f" expected_slice {expected_slice}, but got {image_from_tuple_slice.flatten()}"







@slow
@require_torch_gpu
class  lowercase(					unittest.TestCase			):







 '''simple docstring'''





 def 			UpperCamelCase_       (    self:		Optional[int]		):




   '''simple docstring'''



   super().tearDown()
   gc.collect()
   torch.cuda.empty_cache()


 def 			UpperCamelCase_       (    self:		Optional[int]		):




   '''simple docstring'''



   _snake_case							:		Any								=  load_numpy(
       """https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"""
       """/kandinskyv22/kandinskyv22_text2img_cat_fp16.npy"""		)

   _snake_case							:		Optional[int]								=  KandinskyVaaPriorPipeline.from_pretrained(
       """kandinsky-community/kandinsky-2-2-prior""",				torch_dtype=torch.floataa		)
   pipe_prior.to(a_		)

   _snake_case							:		Tuple								=  KandinskyVaaPipeline.from_pretrained(
       """kandinsky-community/kandinsky-2-2-decoder""",				torch_dtype=torch.floataa		)
   _snake_case							:		Union[str, Any]								=  pipeline.to(a_		)
   pipeline.set_progress_bar_config(disable=a_		)

   _snake_case							:		Dict								=  """red cat, 4k photo"""

   _snake_case							:		List[Any]								=  torch.Generator(device="""cuda"""		).manual_seed(0		)
   _snake_case		, _snake_case							:		Optional[Any]								=  pipe_prior(
       a_,				generator=a_,				num_inference_steps=5,				negative_prompt="""""",				).to_tuple()

   _snake_case							:		List[str]								=  torch.Generator(device="""cuda"""		).manual_seed(0		)
   _snake_case							:		Optional[Any]								=  pipeline(
       image_embeds=a_,				negative_image_embeds=a_,				generator=a_,				num_inference_steps=100,				output_type="""np""",				)

   _snake_case							:		int								=  output.images[0]

   assert image.shape == (512, 512, 3)

   assert_mean_pixel_difference(a_,				a_		)








"""simple docstring"""


import inspect
import unittest

import torch
import torch.nn as nn

from accelerate.hooks import (
    AlignDevicesHook,
    ModelHook,
    SequentialHook,
    add_hook_to_module,
    attach_align_device_hook,
    remove_hook_from_module,
    remove_hook_from_submodules,
)
from accelerate.test_utils import require_multi_gpu






class  lowercase(					nn.Module			):







 '''simple docstring'''





 def __init__(    self:		Optional[int]		):




   '''simple docstring'''



   super().__init__()
   _snake_case							:		List[str]								=  nn.Linear(3,				4		)
   _snake_case							:		int								=  nn.BatchNormad(4		)
   _snake_case							:		List[str]								=  nn.Linear(4,				5		)


 def 			UpperCamelCase_       (    self:		Any,				a_:		Union[str, Any]		):




   '''simple docstring'''



   return self.lineara(self.batchnorm(self.lineara(a_		)		)		)







class  lowercase(					__a			):







 '''simple docstring'''





 def 			UpperCamelCase_       (    self:		Any,				a_:		int,				*a_:		Dict,				**a_:		Dict		):




   '''simple docstring'''



   return (args[0] + 1,) + args[1:], kwargs







class  lowercase(					__a			):







 '''simple docstring'''





 def 			UpperCamelCase_       (    self:		str,				a_:		Tuple,				a_:		Union[str, Any]		):




   '''simple docstring'''



   return output + 1







class  lowercase(					unittest.TestCase			):







 '''simple docstring'''





 def 			UpperCamelCase_       (    self:		Union[str, Any]		):




   '''simple docstring'''



   _snake_case							:		Tuple								=  ModelForTest()
   _snake_case							:		List[str]								=  ModelHook()

   add_hook_to_module(a_,				a_		)
   self.assertEqual(test_model._hf_hook,				a_		)
   self.assertTrue(hasattr(a_,				"""_old_forward"""		)		)

   # Check adding the hook did not change the name or the signature
   self.assertEqual(test_model.forward.__name__,				"""forward"""		)
   self.assertListEqual(list(inspect.signature(test_model.forward		).parameters		),				["""x"""]		)

   remove_hook_from_module(a_		)
   self.assertFalse(hasattr(a_,				"""_hf_hook"""		)		)
   self.assertFalse(hasattr(a_,				"""_old_forward"""		)		)


 def 			UpperCamelCase_       (    self:		Tuple		):




   '''simple docstring'''



   _snake_case							:		Dict								=  ModelForTest()
   _snake_case							:		List[Any]								=  ModelHook()

   add_hook_to_module(a_,				a_		)
   add_hook_to_module(a_,				a_,				append=a_		)

   self.assertEqual(isinstance(test_model._hf_hook,				a_		),				a_		)
   self.assertEqual(len(test_model._hf_hook.hooks		),				2		)
   self.assertTrue(hasattr(a_,				"""_old_forward"""		)		)

   # Check adding the hook did not change the name or the signature
   self.assertEqual(test_model.forward.__name__,				"""forward"""		)
   self.assertListEqual(list(inspect.signature(test_model.forward		).parameters		),				["""x"""]		)

   remove_hook_from_module(a_		)
   self.assertFalse(hasattr(a_,				"""_hf_hook"""		)		)
   self.assertFalse(hasattr(a_,				"""_old_forward"""		)		)


 def 			UpperCamelCase_       (    self:		Tuple		):




   '''simple docstring'''



   _snake_case							:		Optional[Any]								=  ModelForTest()
   _snake_case							:		Optional[Any]								=  torch.randn(2,				3		)
   _snake_case							:		List[Any]								=  test_model(x + 1		)
   _snake_case							:		List[str]								=  test_model(x + 2		)

   _snake_case							:		Any								=  PreForwardHook()
   add_hook_to_module(a_,				a_		)
   _snake_case							:		List[Any]								=  test_model(a_		)
   self.assertTrue(torch.allclose(a_,				a_,				atol=1E-5		)		)

   # Attaching a hook to a model when it already has one replaces, does not chain
   _snake_case							:		List[str]								=  PreForwardHook()
   add_hook_to_module(a_,				a_		)
   _snake_case							:		Tuple								=  test_model(a_		)
   self.assertTrue(torch.allclose(a_,				a_,				atol=1E-5		)		)

   # You need to use the sequential hook to chain two or more hooks
   _snake_case							:		str								=  SequentialHook(PreForwardHook(),				PreForwardHook()		)
   add_hook_to_module(a_,				a_		)

   _snake_case							:		str								=  test_model(a_		)
   assert torch.allclose(a_,				a_,				atol=1E-5		)


 def 			UpperCamelCase_       (    self:		Optional[int]		):




   '''simple docstring'''



   _snake_case							:		Optional[int]								=  ModelForTest()
   _snake_case							:		List[Any]								=  torch.randn(2,				3		)
   _snake_case							:		List[str]								=  test_model(a_		)

   _snake_case							:		List[Any]								=  PostForwardHook()
   add_hook_to_module(a_,				a_		)
   _snake_case							:		Union[str, Any]								=  test_model(a_		)
   self.assertTrue(torch.allclose(a_,				output + 1,				atol=1E-5		)		)

   # Attaching a hook to a model when it already has one replaces, does not chain
   _snake_case							:		Tuple								=  PostForwardHook()
   add_hook_to_module(a_,				a_		)
   _snake_case							:		Optional[Any]								=  test_model(a_		)
   self.assertTrue(torch.allclose(a_,				output + 1,				atol=1E-5		)		)

   # You need to use the sequential hook to chain two or more hooks
   _snake_case							:		Dict								=  SequentialHook(PostForwardHook(),				PostForwardHook()		)
   add_hook_to_module(a_,				a_		)

   _snake_case							:		List[str]								=  test_model(a_		)
   assert torch.allclose(a_,				output + 2,				atol=1E-5		)


 def 			UpperCamelCase_       (    self:		Optional[Any]		):




   '''simple docstring'''



   _snake_case							:		str								=  ModelForTest()
   _snake_case							:		Any								=  torch.randn(2,				3		)
   _snake_case							:		List[str]								=  test_model(a_		)

   _snake_case							:		List[Any]								=  PostForwardHook()
   add_hook_to_module(a_,				a_		)
   _snake_case							:		Dict								=  test_model(a_		)
   self.assertTrue(torch.allclose(a_,				output + 1		)		)
   self.assertTrue(outputa.requires_grad		)

   _snake_case							:		Union[str, Any]								=  True
   _snake_case							:		Dict								=  test_model(a_		)
   self.assertFalse(outputa.requires_grad		)


 @require_multi_gpu
 def 			UpperCamelCase_       (    self:		Tuple		):




   '''simple docstring'''



   _snake_case							:		Dict								=  ModelForTest()
   # Everything is on CPU
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)

   # This will move each submodule on different devices
   add_hook_to_module(model.lineara,				AlignDevicesHook(execution_device=0		)		)
   add_hook_to_module(model.batchnorm,				AlignDevicesHook(execution_device=0		)		)
   add_hook_to_module(model.lineara,				AlignDevicesHook(execution_device=1		)		)

   self.assertEqual(model.lineara.weight.device,				torch.device(0		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device(0		)		)
   self.assertEqual(model.batchnorm.running_mean.device,				torch.device(0		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device(1		)		)

   # We can still make a forward pass. The input does not need to be on any particular device
   _snake_case							:		Any								=  torch.randn(2,				3		)
   _snake_case							:		Any								=  model(a_		)
   self.assertEqual(output.device,				torch.device(1		)		)

   # We can add a general hook to put back output on same device as input.
   add_hook_to_module(a_,				AlignDevicesHook(io_same_device=a_		)		)
   _snake_case							:		int								=  torch.randn(2,				3		).to(0		)
   _snake_case							:		Optional[Any]								=  model(a_		)
   self.assertEqual(output.device,				torch.device(0		)		)


 def 			UpperCamelCase_       (    self:		Union[str, Any]		):




   '''simple docstring'''



   _snake_case							:		int								=  ModelForTest()

   # Everything is on CPU
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)

   # This will move each submodule on different devices
   _snake_case							:		Optional[int]								=  {"""execution_device""": 0 if torch.cuda.is_available() else """cpu""", """offload""": True}

   add_hook_to_module(model.lineara,				AlignDevicesHook(**a_		)		)
   add_hook_to_module(model.batchnorm,				AlignDevicesHook(**a_		)		)
   add_hook_to_module(model.lineara,				AlignDevicesHook(**a_		)		)

   # Parameters have been offloaded, so on the meta device
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   # Buffers are not included in the offload by default, so are on the execution device
   _snake_case							:		Union[str, Any]								=  torch.device(hook_kwargs["""execution_device"""]		)
   self.assertEqual(model.batchnorm.running_mean.device,				a_		)

   _snake_case							:		str								=  torch.randn(2,				3		)
   _snake_case							:		Optional[int]								=  model(a_		)
   self.assertEqual(output.device,				a_		)

   # Removing hooks loads back the weights in the model.
   remove_hook_from_module(model.lineara		)
   remove_hook_from_module(model.batchnorm		)
   remove_hook_from_module(model.lineara		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)

   # Now test with buffers included in the offload
   _snake_case							:		Any								=  {
       """execution_device""": 0 if torch.cuda.is_available() else """cpu""",
       """offload""": True,
       """offload_buffers""": True,
   }

   add_hook_to_module(model.lineara,				AlignDevicesHook(**a_		)		)
   add_hook_to_module(model.batchnorm,				AlignDevicesHook(**a_		)		)
   add_hook_to_module(model.lineara,				AlignDevicesHook(**a_		)		)

   # Parameters have been offloaded, so on the meta device, buffers included
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.running_mean.device,				torch.device("""meta"""		)		)

   _snake_case							:		List[Any]								=  torch.randn(2,				3		)
   _snake_case							:		Any								=  model(a_		)
   self.assertEqual(output.device,				a_		)

   # Removing hooks loads back the weights in the model.
   remove_hook_from_module(model.lineara		)
   remove_hook_from_module(model.batchnorm		)
   remove_hook_from_module(model.lineara		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)


 def 			UpperCamelCase_       (    self:		str		):




   '''simple docstring'''



   _snake_case							:		Any								=  ModelForTest()

   # Everything is on CPU
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)

   # This will move each submodule on different devices
   _snake_case							:		Tuple								=  0 if torch.cuda.is_available() else """cpu"""
   attach_align_device_hook(a_,				execution_device=a_,				offload=a_		)

   # Parameters have been offloaded, so on the meta device
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   # Buffers are not included in the offload by default, so are on the execution device
   _snake_case							:		Optional[int]								=  torch.device(a_		)
   self.assertEqual(model.batchnorm.running_mean.device,				a_		)

   _snake_case							:		List[Any]								=  torch.randn(2,				3		)
   _snake_case							:		List[Any]								=  model(a_		)
   self.assertEqual(output.device,				a_		)

   # Removing hooks loads back the weights in the model.
   remove_hook_from_submodules(a_		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)

   # Now test with buffers included in the offload
   attach_align_device_hook(a_,				execution_device=a_,				offload=a_,				offload_buffers=a_		)

   # Parameters have been offloaded, so on the meta device, buffers included
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.running_mean.device,				torch.device("""meta"""		)		)

   _snake_case							:		str								=  torch.randn(2,				3		)
   _snake_case							:		List[Any]								=  model(a_		)
   self.assertEqual(output.device,				a_		)

   # Removing hooks loads back the weights in the model.
   remove_hook_from_submodules(a_		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)


 def 			UpperCamelCase_       (    self:		Any		):




   '''simple docstring'''



   _snake_case							:		List[str]								=  ModelForTest()

   # Everything is on CPU
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)

   # This will move each submodule on different devices
   _snake_case							:		Any								=  0 if torch.cuda.is_available() else """cpu"""
   attach_align_device_hook(
       a_,				execution_device=a_,				offload=a_,				weights_map=model.state_dict()		)

   # Parameters have been offloaded, so on the meta device
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   # Buffers are not included in the offload by default, so are on the execution device
   _snake_case							:		Optional[Any]								=  torch.device(a_		)
   self.assertEqual(model.batchnorm.running_mean.device,				a_		)

   _snake_case							:		int								=  torch.randn(2,				3		)
   _snake_case							:		str								=  model(a_		)
   self.assertEqual(output.device,				a_		)

   # Removing hooks loads back the weights in the model.
   remove_hook_from_submodules(a_		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)

   # Now test with buffers included in the offload
   attach_align_device_hook(
       a_,				execution_device=a_,				offload=a_,				weights_map=model.state_dict(),				offload_buffers=a_,				)

   # Parameters have been offloaded, so on the meta device, buffers included
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""meta"""		)		)
   self.assertEqual(model.batchnorm.running_mean.device,				torch.device("""meta"""		)		)

   _snake_case							:		Optional[int]								=  torch.randn(2,				3		)
   _snake_case							:		Any								=  model(a_		)
   self.assertEqual(output.device,				a_		)

   # Removing hooks loads back the weights in the model.
   remove_hook_from_submodules(a_		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.batchnorm.weight.device,				torch.device("""cpu"""		)		)
   self.assertEqual(model.lineara.weight.device,				torch.device("""cpu"""		)		)


