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See https://github.com/pytorch/pytorch/pull/129751#issue-2380881501. Most changes are auto-generated by linter. You can review these PRs via: ```bash git diff --ignore-all-space --ignore-blank-lines HEAD~1 ``` Pull Request resolved: https://github.com/pytorch/pytorch/pull/129762 Approved by: https://github.com/anijain2305
92 lines
3.0 KiB
Python
92 lines
3.0 KiB
Python
# Owner(s): ["module: dynamo"]
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import unittest
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from unittest.mock import Mock
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import torch
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import torch._dynamo.test_case
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import torch._dynamo.testing
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from torch._dynamo.device_interface import CudaInterface, DeviceGuard
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from torch.testing._internal.common_cuda import TEST_CUDA, TEST_MULTIGPU
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class TestDeviceGuard(torch._dynamo.test_case.TestCase):
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"""
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Unit tests for the DeviceGuard class using a mock DeviceInterface.
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"""
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def setUp(self):
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super().setUp()
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self.device_interface = Mock()
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self.device_interface.exchange_device = Mock(return_value=0)
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self.device_interface.maybe_exchange_device = Mock(return_value=1)
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def test_device_guard(self):
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device_guard = DeviceGuard(self.device_interface, 1)
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with device_guard as _:
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self.device_interface.exchange_device.assert_called_once_with(1)
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self.assertEqual(device_guard.prev_idx, 0)
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self.assertEqual(device_guard.idx, 1)
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self.device_interface.maybe_exchange_device.assert_called_once_with(0)
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self.assertEqual(device_guard.prev_idx, 0)
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self.assertEqual(device_guard.idx, 1)
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def test_device_guard_no_index(self):
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device_guard = DeviceGuard(self.device_interface, None)
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with device_guard as _:
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self.device_interface.exchange_device.assert_not_called()
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self.assertEqual(device_guard.prev_idx, -1)
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self.assertEqual(device_guard.idx, None)
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self.device_interface.maybe_exchange_device.assert_not_called()
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self.assertEqual(device_guard.prev_idx, -1)
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self.assertEqual(device_guard.idx, None)
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@unittest.skipIf(not TEST_CUDA, "No CUDA available.")
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class TestCUDADeviceGuard(torch._dynamo.test_case.TestCase):
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"""
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Unit tests for the DeviceGuard class using a CudaInterface.
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"""
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def setUp(self):
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super().setUp()
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self.device_interface = CudaInterface
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@unittest.skipIf(not TEST_MULTIGPU, "need multiple GPU")
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def test_device_guard(self):
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current_device = torch.cuda.current_device()
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device_guard = DeviceGuard(self.device_interface, 1)
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with device_guard as _:
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self.assertEqual(torch.cuda.current_device(), 1)
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self.assertEqual(device_guard.prev_idx, 0)
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self.assertEqual(device_guard.idx, 1)
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self.assertEqual(torch.cuda.current_device(), current_device)
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self.assertEqual(device_guard.prev_idx, 0)
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self.assertEqual(device_guard.idx, 1)
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def test_device_guard_no_index(self):
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current_device = torch.cuda.current_device()
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device_guard = DeviceGuard(self.device_interface, None)
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with device_guard as _:
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self.assertEqual(torch.cuda.current_device(), current_device)
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self.assertEqual(device_guard.prev_idx, -1)
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self.assertEqual(device_guard.idx, None)
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self.assertEqual(device_guard.prev_idx, -1)
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self.assertEqual(device_guard.idx, None)
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if __name__ == "__main__":
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from torch._dynamo.test_case import run_tests
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run_tests()
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