Add fuyu device map (#26949)

* add _no_split_modules

* style

* fix _no_split_modules

* add doc

src/transformers/modeling_utils.py

@@ -1507,6 +1507,35 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin, PushToHubMix
         if hasattr(output_embeddings, "out_features") and hasattr(input_embeddings, "num_embeddings"):
             output_embeddings.out_features = input_embeddings.num_embeddings
 
+    def _get_no_split_modules(self, device_map: str):
+        """
+        Get the modules of the model that should not be spit when using device_map. We iterate through the modules to
+        get the underlying `_no_split_modules`.
+
+        Args:
+            device_map (`str`):
+                The device map value. Options are ["auto", "balanced", "balanced_low_0", "sequential"]
+
+        Returns:
+            `List[str]`: List of modules that should not be split
+        """
+        if self._no_split_modules is None:
+            raise ValueError(
+                f"{self.__class__.__name__} does not support `device_map='{device_map}'`. To implement support, the model "
+                "class needs to implement the `_no_split_modules` attribute."
+            )
+        _no_split_modules = set(self._no_split_modules)
+        for module in self.modules():
+            if isinstance(module, PreTrainedModel):
+                if module._no_split_modules is None:
+                    raise ValueError(
+                        f"{module.__class__.__name__} does not support `device_map='{device_map}'`. To implement support, the model "
+                        "class needs to implement the `_no_split_modules` attribute."
+                    )
+                else:
+                    _no_split_modules = _no_split_modules | set(module._no_split_modules)
+        return list(_no_split_modules)
+
     def resize_token_embeddings(
         self, new_num_tokens: Optional[int] = None, pad_to_multiple_of: Optional[int] = None
     ) -> nn.Embedding:
@@ -3226,12 +3255,7 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin, PushToHubMix
             elif load_in_8bit:
                 target_dtype = torch.int8
 
-            if model._no_split_modules is None:
-                raise ValueError(
-                    f"{model.__class__.__name__} does not support `device_map='{device_map}'`. To implement support, the model "
-                    "class needs to implement the `_no_split_modules` attribute."
-                )
-            no_split_modules = model._no_split_modules
+            no_split_modules = model._get_no_split_modules(device_map)
             if device_map not in ["auto", "balanced", "balanced_low_0", "sequential"]:
                 raise ValueError(
                     "If passing a string for `device_map`, please choose 'auto', 'balanced', 'balanced_low_0' or "

src/transformers/models/fuyu/modeling_fuyu.py

@@ -262,6 +262,7 @@ class FuyuForCausalLM(FuyuPreTrainedModel):
             inputs_embeds = self.language_model.get_input_embeddings()(input_ids)
             if image_patches is not None and past_key_values is None:
                 patch_embeddings = self.vision_embed_tokens(image_patches.to(self.vision_embed_tokens.weight.dtype))
+                patch_embeddings = patch_embeddings.to(inputs_embeds.device)
                 inputs_embeds = self.gather_continuous_embeddings(
                     word_embeddings=inputs_embeds,
                     continuous_embeddings=patch_embeddings,