[None][fix] add gc for test fixture #8220
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xinhe-nv
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📝 WalkthroughWalkthroughAdds gc module import and invokes gc.collect() after torch.cuda.empty_cache() within the torch_empty_cache pytest fixture in tests/integration/defs/conftest.py. No changes to public APIs or exports. Changes
Sequence Diagram(s)sequenceDiagram
autonumber
participant T as Pytest Test
participant F as torch_empty_cache Fixture
participant C as torch.cuda
participant G as gc
T->>F: Use fixture
activate F
F->>C: empty_cache()
note right of C: Clear CUDA cached memory
F->>G: collect()
note right of G: Force Python garbage collection
deactivate F
Estimated code review effort🎯 2 (Simple) | ⏱️ ~10 minutes Pre-merge checks and finishing touches❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
✨ Finishing touches
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Actionable comments posted: 0
🧹 Nitpick comments (1)
tests/integration/defs/conftest.py (1)
2521-2528: LGTM! The addition ofgc.collect()improves memory cleanup.The combination of
torch.cuda.empty_cache()followed bygc.collect()is a sound pattern for thorough GPU memory cleanup in test fixtures. Theempty_cache()frees PyTorch's cached memory, whilegc.collect()ensures Python objects holding GPU tensor references are also cleaned up, reducing OOM risk.Optional: Update the docstring to reflect the full cleanup behavior.
Consider updating the docstring to mention the garbage collection step:
@pytest.fixture(autouse=True) def torch_empty_cache() -> None: """ - Manually empty the torch CUDA cache before each test, to reduce risk of OOM errors. + Manually empty the torch CUDA cache and trigger garbage collection before each test, + to reduce risk of OOM errors. """Optional: Consider updating the copyright year.
As per coding guidelines, the copyright header should include the current year (2025) when modifying files. You could update line 1:
-# SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved. +# SPDX-FileCopyrightText: Copyright (c) 2022-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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🔇 Additional comments (1)
tests/integration/defs/conftest.py (1)
18-18: LGTM!The
gcmodule import is correctly placed and necessary for thegc.collect()call added to thetorch_empty_cachefixture.
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