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https://github.com/pytorch/pytorch.git
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cd50bd8477
This reverts commit fb02b40d27737213e0547dec0e30977dfc50f2f3. Reverted https://github.com/pytorch/pytorch/pull/140542 on behalf of https://github.com/huydhn due to Sorry for reverting your change, but I need to revert this in order to revert https://github.com/pytorch/pytorch/pull/133572#issuecomment-2537204202 due to a conflict ([comment](https://github.com/pytorch/pytorch/pull/140542#issuecomment-2537253665))
74 lines
2.8 KiB
Python
74 lines
2.8 KiB
Python
# Owner(s): ["module: tests"]
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import sys
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import unittest
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import torch
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from torch.testing._internal.common_utils import NoTest, run_tests, TestCase
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if not torch.accelerator.is_available():
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print("No available accelerator detected, skipping tests", file=sys.stderr)
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TestCase = NoTest # noqa: F811
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TEST_MULTIACCELERATOR = torch.accelerator.device_count() > 1
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class TestAccelerator(TestCase):
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def test_current_accelerator(self):
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self.assertTrue(torch.accelerator.is_available())
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accelerators = ["cuda", "xpu", "mps"]
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for accelerator in accelerators:
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if torch.get_device_module(accelerator).is_available():
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self.assertEqual(
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torch.accelerator.current_accelerator().type, accelerator
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)
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self.assertIsNone(torch.accelerator.current_accelerator().index)
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with self.assertRaisesRegex(
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ValueError, "doesn't match the current accelerator"
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):
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torch.accelerator.set_device_idx("cpu")
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@unittest.skipIf(not TEST_MULTIACCELERATOR, "only one accelerator detected")
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def test_generic_multi_device_behavior(self):
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orig_device = torch.accelerator.current_device_idx()
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target_device = (orig_device + 1) % torch.accelerator.device_count()
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torch.accelerator.set_device_idx(target_device)
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self.assertEqual(target_device, torch.accelerator.current_device_idx())
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torch.accelerator.set_device_idx(orig_device)
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self.assertEqual(orig_device, torch.accelerator.current_device_idx())
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s1 = torch.Stream(target_device)
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torch.accelerator.set_stream(s1)
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self.assertEqual(target_device, torch.accelerator.current_device_idx())
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torch.accelerator.synchronize(orig_device)
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self.assertEqual(target_device, torch.accelerator.current_device_idx())
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def test_generic_stream_behavior(self):
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s1 = torch.Stream()
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s2 = torch.Stream()
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torch.accelerator.set_stream(s1)
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self.assertEqual(torch.accelerator.current_stream(), s1)
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event = torch.Event()
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a = torch.randn(100)
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b = torch.randn(100)
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c = a + b
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torch.accelerator.set_stream(s2)
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self.assertEqual(torch.accelerator.current_stream(), s2)
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a_acc = a.to(torch.accelerator.current_accelerator(), non_blocking=True)
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b_acc = b.to(torch.accelerator.current_accelerator(), non_blocking=True)
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torch.accelerator.set_stream(s1)
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self.assertEqual(torch.accelerator.current_stream(), s1)
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event.record(s2)
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event.synchronize()
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c_acc = a_acc + b_acc
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event.record(s2)
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torch.accelerator.synchronize()
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self.assertTrue(event.query())
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self.assertEqual(c_acc.cpu(), c)
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if __name__ == "__main__":
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run_tests()
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