add xpu support

Author: faaany

optimum/intel/ipex/modeling_base.py

@@ -44,6 +44,7 @@
 from transformers.modeling_outputs import CausalLMOutputWithPast, ModelOutput
 from transformers.models.auto.auto_factory import _get_model_class as get_model_class
 from transformers.utils import WEIGHTS_NAME
+from transformers import is_torch_xpu_available
 
 from optimum.exporters import TasksManager
 from optimum.modeling_base import OptimizedModel
@@ -128,10 +129,37 @@ def __init__(
         **kwargs,
     ):
         OptimizedModel.__init__(self, model=model, config=config)
-        # To do: add XPU support
-        self._device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
-        self._dtype = self.config.torch_dtype if self.config.torch_dtype is not None else torch.float32
+        device_map = kwargs.pop("device_map", None)
+        if device_map is None:
+            if is_torch_xpu_available(check_device=True):
+                self._device = torch.device("xpu:0")
+            elif torch.cuda.is_available():
+                self._device = torch.device("cuda:0")
+            else:
+                self._device = torch.device("cpu")
+        else:
+            if isinstance(device_map, torch.device):
+                self._device = device_map
+            elif isinstance(device_map, str):
+                if device_map in ["auto", "balanced", "balanced_low_0", "sequential"]:
+                    raise ValueError(
+                        "When passing device_map as a string, the value needs to be a device name (e.g. cpu, xpu:0). "
+                        f"'auto', 'balanced', 'balanced_low_0', 'sequential' are not supported."
+                    )
+                self._device = torch.device(device_map)
+            elif isinstance(device_map, int):
+                if is_torch_xpu_available(check_device=True):
+                    self._device = torch.device(f"xpu:{device_map}")
+                elif torch.cuda.is_available():
+                    self._device = torch.device(f"cuda:{device_map}")
+                else:
+                    self._device = torch.device("cpu")
+            else:
+                raise ValueError(
+                    f"device_map should be either be a string, an integer or a torch.device object, but found {type(device_map)}"
+                )
         self.model.to(self._device)
+        self._dtype = self.config.torch_dtype if self.config.torch_dtype is not None else torch.float32
         self.model_save_dir = model_save_dir
         self._is_ipex_exported = _is_patched_with_ipex(model, self.export_feature)
 
@@ -319,6 +347,8 @@ def _init_warmup(self):
         if not self._is_ipex_exported:
             use_cache = "past_key_values" in self.input_names
             dummy_inputs = prepare_jit_inputs(self, self.export_feature, use_cache)
+            if "cpu" not in str(self._device):
+                dummy_inputs = {name: tensor.to(self._device) for name, tensor in dummy_inputs.items()}
             for _ in range(2):
                 self(**dummy_inputs)