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https://github.com/vllm-project/vllm.git
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b40d859c7b
Signed-off-by: Shangdi Yu <[email protected]> Co-authored-by: OpenAI Codex <[email protected]> Co-authored-by: Claude Opus 4.8 (1M context) <[email protected]>
91 lines
2.4 KiB
Python
91 lines
2.4 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
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import pytest
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import torch
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from vllm.utils.import_utils import has_helion
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if not has_helion():
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pytest.skip("Helion is not installed", allow_module_level=True)
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from scripts import benchmark_helion_kernels
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check_correctness = benchmark_helion_kernels.check_correctness
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class _FakeKernel:
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helion_settings = None
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def __init__(self, offset: float):
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self.calls = 0
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self.offset = offset
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def __call__(self, output: torch.Tensor, input: torch.Tensor) -> torch.Tensor:
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self.calls += 1
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output.copy_(input + self.offset)
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return input * 2
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def test_check_correctness_runs_once_without_mutating_benchmark_inputs():
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kernel = _FakeKernel(offset=1)
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baseline_calls = 0
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def baseline(output: torch.Tensor, input: torch.Tensor) -> torch.Tensor:
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nonlocal baseline_calls
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baseline_calls += 1
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output.copy_(input + 1)
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return input * 2
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output = torch.zeros(4)
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inputs = (output, torch.arange(4))
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check_correctness(kernel, baseline, inputs, "matching")
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assert kernel.calls == 1
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assert baseline_calls == 1
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torch.testing.assert_close(output, torch.zeros(4))
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def test_check_correctness_reports_mutated_input_mismatch():
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kernel = _FakeKernel(offset=2)
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def baseline(output: torch.Tensor, input: torch.Tensor) -> torch.Tensor:
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output.copy_(input + 1)
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return input * 2
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inputs = (torch.zeros(4), torch.arange(4))
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with pytest.raises(AssertionError, match="Numerics check failed for case bad"):
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check_correctness(kernel, baseline, inputs, "bad")
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def test_check_correctness_reports_return_value_mismatch():
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kernel = _FakeKernel(offset=1)
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def baseline(output: torch.Tensor, input: torch.Tensor) -> torch.Tensor:
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output.copy_(input + 1)
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return input * 3
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inputs = (torch.zeros(4), torch.arange(4))
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with pytest.raises(AssertionError, match="Numerics check failed for case bad"):
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check_correctness(kernel, baseline, inputs, "bad")
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def test_log_versions(monkeypatch):
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messages = []
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def record(message: str, *args):
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messages.append(message % args)
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monkeypatch.setattr(benchmark_helion_kernels.logger, "info", record)
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benchmark_helion_kernels.log_versions()
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assert [message.split(":", 1)[0] for message in messages] == [
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"torch",
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"helion",
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"triton",
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]
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