Experimental DirectML support via torch-directml and onnxruntime-directml

optimum/exporters/onnx/convert.py

@@ -16,6 +16,7 @@
 
 import copy
 import gc
+import importlib
 import multiprocessing as mp
 import os
 import traceback
@@ -532,15 +533,19 @@ def export_pytorch(
         # Check that inputs match, and order them properly
         dummy_inputs = config.generate_dummy_inputs(framework="pt", **input_shapes)
 
-        device = torch.device(device)
+        if device == "dml" and importlib.util.find_spec("torch_directml"):
+            torch_directml = importlib.import_module("torch_directml")
+            device = torch_directml.device()
+        else:
+            device = torch.device(device)
 
         def remap(value):
             if isinstance(value, torch.Tensor):
                 value = value.to(device)
 
             return value
 
-        if device.type == "cuda" and torch.cuda.is_available():
+        if device.type == "cuda" and torch.cuda.is_available() or device.type == "privateuseone":
             model.to(device)
             dummy_inputs = tree_map(remap, dummy_inputs)
 

optimum/exporters/tasks.py

@@ -2271,12 +2271,16 @@ def get_model_from_task(
                     kwargs["torch_dtype"] = torch_dtype
 
                     if isinstance(device, str):
-                        device = torch.device(device)
+                        if device == "dml" and importlib.util.find_spec("torch_directml"):
+                            torch_directml = importlib.import_module("torch_directml")
+                            device = torch_directml.device()
+                        else:
+                            device = torch.device(device)
                     elif device is None:
                         device = torch.device("cpu")
 
                     # TODO : fix EulerDiscreteScheduler loading to enable for SD models
-                    if version.parse(torch.__version__) >= version.parse("2.0") and library_name != "diffusers":
+                    if version.parse(torch.__version__) >= version.parse("2.0") and library_name != "diffusers" and device.type != "privateuseone":
                         with device:
                             # Initialize directly in the requested device, to save allocation time. Especially useful for large
                             # models to initialize on cuda device.

optimum/onnxruntime/io_binding/io_binding_helper.py

@@ -11,6 +11,7 @@
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
+import importlib
 import logging
 import traceback
 from typing import TYPE_CHECKING
@@ -145,8 +146,12 @@ def to_pytorch_via_dlpack(ort_value: OrtValue) -> torch.Tensor:
     @staticmethod
     def get_device_index(device):
         if isinstance(device, str):
-            # could be 'cuda:0', 'cuda:1', or 'cpu'. with cpu, set index=0
-            device = torch.device(device)
+            if device == "dml" and importlib.util.find_spec("torch_directml"):
+                torch_directml = importlib.import_module("torch_directml")
+                device = torch_directml.device()
+            else:
+                # could be 'cuda:0', 'cuda:1', or 'cpu'. with cpu, set index=0
+                device = torch.device(device)
         elif isinstance(device, int):
             return device
         return 0 if device.index is None else device.index

optimum/utils/import_utils.py

@@ -113,6 +113,8 @@ def _is_package_available(
         "onnxruntime-migraphx",
         "ort-migraphx-nightly",
         "ort-rocm-nightly",
+        # For DirectML
+        "onnxruntime-directml",
     ],
 )
 _tf_available, _tf_version = _is_package_available(

setup.py

@@ -69,6 +69,15 @@
         "protobuf>=3.20.1",
         "transformers>=4.36,<4.49.0",
     ],
+    "onnxruntime-directml": [
+        "onnx",
+        "onnxruntime-directml>=1.11.0",
+        "datasets>=1.2.1",
+        "evaluate",
+        "protobuf>=3.20.1",
+        "accelerate",  # ORTTrainer requires it.
+        "transformers>=4.36,<4.48.0",
+    ],
     "exporters": [
         "onnx",
         "onnxruntime",
@@ -81,6 +90,13 @@
         "timm",
         "transformers>=4.36,<4.49.0",
     ],
+    "exporters-directml": [
+        "torch-directml",
+        "onnx",
+        "onnxruntime-directml",
+        "timm",
+        "transformers>=4.36,<4.48.0",
+    ],
     "exporters-tf": [
         "tensorflow>=2.4,<=2.12.1",
         "tf2onnx",