[LoRA] allow big CUDA tests to run properly for LoRA (and others) (#9845)

* allow big lora tests to run on the CI.

* print

* print.

* print

* print

* print

* print

* more

* print

* remove print.

* remove print

* directly place on cuda.

* remove pipeline.

* remove

* fix

* fix

* spaces

* quality

* updates

* directly place flux controlnet pipeline on cuda.

* torch_device instead of cuda.

* style

* device placement.

* fixes

* add big gpu marker for mochi; rename test correctly

* address feedback

* fix

---------

Co-authored-by: Aryan <[email protected]>

Author: sayakpaul

Diff for: tests/lora/test_lora_layers_flux.py

@@ -796,8 +796,8 @@ def test_modify_padding_mode(self):
 @nightly
 @require_torch_gpu
 @require_peft_backend
-@unittest.skip("We cannot run inference on this model with the current CI hardware")
-# TODO (DN6, sayakpaul): move these tests to a beefier GPU
+@require_big_gpu_with_torch_cuda
+@pytest.mark.big_gpu_with_torch_cuda
 class FluxLoRAIntegrationTests(unittest.TestCase):
     """internal note: The integration slices were obtained on audace.
 
@@ -819,14 +819,18 @@ def setUp(self):
     def tearDown(self):
         super().tearDown()
 
+        del self.pipeline
         gc.collect()
         torch.cuda.empty_cache()
 
     def test_flux_the_last_ben(self):
         self.pipeline.load_lora_weights("TheLastBen/Jon_Snow_Flux_LoRA", weight_name="jon_snow.safetensors")
         self.pipeline.fuse_lora()
         self.pipeline.unload_lora_weights()
-        self.pipeline.enable_model_cpu_offload()
+        # Instead of calling `enable_model_cpu_offload()`, we do a cuda placement here because the CI
+        # run supports it. We have about 34GB RAM in the CI runner which kills the test when run with
+        # `enable_model_cpu_offload()`. We repeat this for the other tests, too.
+        self.pipeline = self.pipeline.to(torch_device)
 
         prompt = "jon snow eating pizza with ketchup"
 
@@ -848,7 +852,7 @@ def test_flux_kohya(self):
         self.pipeline.load_lora_weights("Norod78/brain-slug-flux")
         self.pipeline.fuse_lora()
         self.pipeline.unload_lora_weights()
-        self.pipeline.enable_model_cpu_offload()
+        self.pipeline = self.pipeline.to(torch_device)
 
         prompt = "The cat with a brain slug earring"
         out = self.pipeline(
@@ -870,7 +874,7 @@ def test_flux_kohya_with_text_encoder(self):
         self.pipeline.load_lora_weights("cocktailpeanut/optimus", weight_name="optimus.safetensors")
         self.pipeline.fuse_lora()
         self.pipeline.unload_lora_weights()
-        self.pipeline.enable_model_cpu_offload()
+        self.pipeline = self.pipeline.to(torch_device)
 
         prompt = "optimus is cleaning the house with broomstick"
         out = self.pipeline(
@@ -892,7 +896,7 @@ def test_flux_xlabs(self):
         self.pipeline.load_lora_weights("XLabs-AI/flux-lora-collection", weight_name="disney_lora.safetensors")
         self.pipeline.fuse_lora()
         self.pipeline.unload_lora_weights()
-        self.pipeline.enable_model_cpu_offload()
+        self.pipeline = self.pipeline.to(torch_device)
 
         prompt = "A blue jay standing on a large basket of rainbow macarons, disney style"
 

Diff for: tests/lora/test_lora_layers_sd3.py

@@ -17,6 +17,7 @@
 import unittest
 
 import numpy as np
+import pytest
 import torch
 from transformers import AutoTokenizer, CLIPTextModelWithProjection, CLIPTokenizer, T5EncoderModel
 
@@ -31,9 +32,9 @@
 from diffusers.utils.testing_utils import (
     nightly,
     numpy_cosine_similarity_distance,
+    require_big_gpu_with_torch_cuda,
     require_peft_backend,
     require_torch_gpu,
-    slow,
     torch_device,
 )
 
@@ -128,11 +129,12 @@ def test_modify_padding_mode(self):
         pass
 
 
-@slow
 @nightly
 @require_torch_gpu
 @require_peft_backend
-class LoraSD3IntegrationTests(unittest.TestCase):
+@require_big_gpu_with_torch_cuda
+@pytest.mark.big_gpu_with_torch_cuda
+class SD3LoraIntegrationTests(unittest.TestCase):
     pipeline_class = StableDiffusion3Img2ImgPipeline
     repo_id = "stabilityai/stable-diffusion-3-medium-diffusers"
 
@@ -166,14 +168,17 @@ def get_inputs(self, device, seed=0):
 
     def test_sd3_img2img_lora(self):
         pipe = self.pipeline_class.from_pretrained(self.repo_id, torch_dtype=torch.float16)
-        pipe.load_lora_weights("zwloong/sd3-lora-training-rank16-v2", weight_name="pytorch_lora_weights.safetensors")
-        pipe.enable_sequential_cpu_offload()
+        pipe.load_lora_weights("zwloong/sd3-lora-training-rank16-v2")
+        pipe.fuse_lora()
+        pipe.unload_lora_weights()
+        pipe = pipe.to(torch_device)
 
         inputs = self.get_inputs(torch_device)
 
         image = pipe(**inputs).images[0]
         image_slice = image[0, -3:, -3:]
         expected_slice = np.array([0.5396, 0.5776, 0.7432, 0.5151, 0.5586, 0.7383, 0.5537, 0.5933, 0.7153])
+
         max_diff = numpy_cosine_similarity_distance(expected_slice.flatten(), image_slice.flatten())
 
         assert max_diff < 1e-4, f"Outputs are not close enough, got {max_diff}"

Diff for: tests/pipelines/controlnet_flux/test_controlnet_flux.py

@@ -32,9 +32,9 @@
 from diffusers.utils import load_image
 from diffusers.utils.testing_utils import (
     enable_full_determinism,
+    nightly,
     numpy_cosine_similarity_distance,
     require_big_gpu_with_torch_cuda,
-    slow,
     torch_device,
 )
 from diffusers.utils.torch_utils import randn_tensor
@@ -204,7 +204,7 @@ def test_flux_image_output_shape(self):
             assert (output_height, output_width) == (expected_height, expected_width)
 
 
-@slow
+@nightly
 @require_big_gpu_with_torch_cuda
 @pytest.mark.big_gpu_with_torch_cuda
 class FluxControlNetPipelineSlowTests(unittest.TestCase):
@@ -230,8 +230,7 @@ def test_canny(self):
             text_encoder_2=None,
             controlnet=controlnet,
             torch_dtype=torch.bfloat16,
-        )
-        pipe.enable_model_cpu_offload()
+        ).to(torch_device)
         pipe.set_progress_bar_config(disable=None)
 
         generator = torch.Generator(device="cpu").manual_seed(0)
@@ -241,12 +240,12 @@ def test_canny(self):
 
         prompt_embeds = torch.load(
             hf_hub_download(repo_id="diffusers/test-slices", repo_type="dataset", filename="flux/prompt_embeds.pt")
-        )
+        ).to(torch_device)
         pooled_prompt_embeds = torch.load(
             hf_hub_download(
                 repo_id="diffusers/test-slices", repo_type="dataset", filename="flux/pooled_prompt_embeds.pt"
             )
-        )
+        ).to(torch_device)
 
         output = pipe(
             prompt_embeds=prompt_embeds,

Diff for: tests/pipelines/flux/test_pipeline_flux.py

@@ -9,6 +9,7 @@
 
 from diffusers import AutoencoderKL, FlowMatchEulerDiscreteScheduler, FluxPipeline, FluxTransformer2DModel
 from diffusers.utils.testing_utils import (
+    nightly,
     numpy_cosine_similarity_distance,
     require_big_gpu_with_torch_cuda,
     slow,
@@ -209,7 +210,7 @@ def test_flux_image_output_shape(self):
             assert (output_height, output_width) == (expected_height, expected_width)
 
 
-@slow
+@nightly
 @require_big_gpu_with_torch_cuda
 @pytest.mark.big_gpu_with_torch_cuda
 class FluxPipelineSlowTests(unittest.TestCase):
@@ -227,19 +228,16 @@ def tearDown(self):
         torch.cuda.empty_cache()
 
     def get_inputs(self, device, seed=0):
-        if str(device).startswith("mps"):
-            generator = torch.manual_seed(seed)
-        else:
-            generator = torch.Generator(device="cpu").manual_seed(seed)
+        generator = torch.Generator(device="cpu").manual_seed(seed)
 
         prompt_embeds = torch.load(
             hf_hub_download(repo_id="diffusers/test-slices", repo_type="dataset", filename="flux/prompt_embeds.pt")
-        )
+        ).to(torch_device)
         pooled_prompt_embeds = torch.load(
             hf_hub_download(
                 repo_id="diffusers/test-slices", repo_type="dataset", filename="flux/pooled_prompt_embeds.pt"
             )
-        )
+        ).to(torch_device)
         return {
             "prompt_embeds": prompt_embeds,
             "pooled_prompt_embeds": pooled_prompt_embeds,
@@ -253,8 +251,7 @@ def get_inputs(self, device, seed=0):
     def test_flux_inference(self):
         pipe = self.pipeline_class.from_pretrained(
             self.repo_id, torch_dtype=torch.bfloat16, text_encoder=None, text_encoder_2=None
-        )
-        pipe.enable_model_cpu_offload()
+        ).to(torch_device)
 
         inputs = self.get_inputs(torch_device)
 

Diff for: tests/pipelines/mochi/test_mochi.py

@@ -17,15 +17,17 @@
 import unittest
 
 import numpy as np
+import pytest
 import torch
 from transformers import AutoTokenizer, T5EncoderModel
 
 from diffusers import AutoencoderKLMochi, FlowMatchEulerDiscreteScheduler, MochiPipeline, MochiTransformer3DModel
 from diffusers.utils.testing_utils import (
     enable_full_determinism,
+    nightly,
     numpy_cosine_similarity_distance,
+    require_big_gpu_with_torch_cuda,
     require_torch_gpu,
-    slow,
     torch_device,
 )
 
@@ -260,8 +262,10 @@ def test_vae_tiling(self, expected_diff_max: float = 0.2):
         )
 
 
-@slow
+@nightly
 @require_torch_gpu
+@require_big_gpu_with_torch_cuda
+@pytest.mark.big_gpu_with_torch_cuda
 class MochiPipelineIntegrationTests(unittest.TestCase):
     prompt = "A painting of a squirrel eating a burger."
 
@@ -293,7 +297,7 @@ def test_mochi(self):
         ).frames
 
         video = videos[0]
-        expected_video = torch.randn(1, 16, 480, 848, 3).numpy()
+        expected_video = torch.randn(1, 19, 480, 848, 3).numpy()
 
         max_diff = numpy_cosine_similarity_distance(video, expected_video)
         assert max_diff < 1e-3, f"Max diff is too high. got {video}"