mirror of
https://github.com/pytorch/pytorch.git
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92b7ed6d07
Pull Request resolved: https://github.com/pytorch/pytorch/pull/155976 Approved by: https://github.com/jansel
70 lines
2.3 KiB
Python
70 lines
2.3 KiB
Python
# Owner(s): ["module: inductor"]
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import torch
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from torch._inductor.test_case import run_tests, TestCase
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from torch.testing._internal.common_utils import instantiate_parametrized_tests
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from torch.testing._internal.inductor_utils import GPU_TYPE, HAS_HELION, requires_helion
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if HAS_HELION:
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import helion
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import helion.language as hl
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class HelionTests(TestCase):
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@requires_helion()
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def test_add_kernel(self):
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@helion.kernel(config=helion.Config(block_sizes=[1, 2]))
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def add(x: torch.Tensor, y: torch.Tensor) -> torch.Tensor:
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# match pytorch broadcasting rules
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x, y = torch.broadcast_tensors(x, y)
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out = torch.empty(
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x.shape,
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# match type promotion of torch.add
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dtype=torch.promote_types(x.dtype, y.dtype),
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device=x.device,
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)
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# tile will be a tuple of blocks
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for tile in hl.tile(out.size()):
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out[tile] = x[tile] + y[tile]
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return out
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def f(x: torch.Tensor, y: torch.Tensor) -> torch.Tensor:
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return add(x, y)
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x = torch.randn(4, 8, device=GPU_TYPE, dtype=torch.float16)
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y = torch.randn(4, 8, device=GPU_TYPE, dtype=torch.float16)
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out = add(x, y)
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compiled_add = torch.compile(f, fullgraph=True, backend="inductor")
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compiled_out = compiled_add(x, y)
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self.assertEqual(out, x + y)
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self.assertEqual(compiled_out, x + y)
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@requires_helion()
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def test_softmax_view_reshape(self):
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@helion.kernel(config={"block_size": 1})
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def softmax(x: torch.Tensor) -> torch.Tensor:
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n, _m = x.size()
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out = torch.empty_like(x)
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for tile_n in hl.tile(n):
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values = x[tile_n, :]
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amax = torch.amax(values, dim=1).view(tile_n, 1)
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exp = torch.exp(values - amax)
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sum_exp = torch.reshape(torch.sum(exp, dim=1), [tile_n, 1])
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out[tile_n, :] = exp / sum_exp
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return out
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x = torch.randn([1024, 1024], device=GPU_TYPE, dtype=torch.float16)
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result = softmax(x)
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self.assertEqual(
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result, torch.nn.functional.softmax(x, dim=1), rtol=1e-2, atol=1e-1
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)
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instantiate_parametrized_tests(HelionTests)
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if __name__ == "__main__":
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run_tests()
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