feat: allow sharding for auraflow. (#8853)

Author: sayakpaul

src/diffusers/models/transformers/auraflow_transformer_2d.py

@@ -274,6 +274,7 @@ class AuraFlowTransformer2DModel(ModelMixin, ConfigMixin):
         pos_embed_max_size (`int`, defaults to 4096): Maximum positions to embed from the image latents.
     """
 
+    _no_split_modules = ["AuraFlowJointTransformerBlock", "AuraFlowSingleTransformerBlock", "AuraFlowPatchEmbed"]
     _supports_gradient_checkpointing = True
 
     @register_to_config

tests/models/transformers/test_models_transformer_aura_flow.py

@@ -29,6 +29,8 @@
 class SD3TransformerTests(ModelTesterMixin, unittest.TestCase):
     model_class = AuraFlowTransformer2DModel
     main_input_name = "hidden_states"
+    # We override the items here because the transformer under consideration is small.
+    model_split_percents = [0.7, 0.6, 0.6]
 
     @property
     def dummy_input(self):