[None][test] Clean cache for certain easily hang cases

[crazydemo]

Summary by CodeRabbit

• Bug Fixes

  • Improved GPU memory management by enhancing cache eviction efficiency.

• Tests

  • Updated multi-GPU test configurations and expectations.
  • Added waivers for slow I/O tests to improve test suite reliability.

Description

Test Coverage

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[crazydemo]

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[tensorrt-cicd]

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📝 Walkthrough

Walkthrough

Configuration updates to GPU allocation for Llama3.1-70B-BF16 tests, changing from 2-GPU to 8-GPU setup. Memory management enhancement in fixture via gc.collect(). Test waiver entries adjusted and expanded for slow I/O scenarios.

Changes

Cohort / File(s)	Summary
Memory management enhancement tests/integration/defs/conftest.py	Added gc.collect() invocation before torch.cuda.empty_cache() in torch_empty_cache fixture when CUDA is available, improving memory pressure relief.
GPU allocation and memory metric updates tests/integration/defs/test_e2e.py	Updated Llama3.1-70B-BF16 multi-GPU test expectations: GPU count increased from 2 to 8; memory usage updated from 91.0 to 24.6.
Test parameterization updates tests/integration/test_lists/qa/llm_function_core.txt, tests/integration/test_lists/qa/llm_function_core_sanity.txt, tests/integration/test_lists/qa/llm_function_nim.txt	Updated test references for multi-GPU Llama3.1-70B-BF16 quickstart from suffix -2 to -8 across all three test list files.
Test waiver management tests/integration/test_lists/qa/waives.txt	Removed one existing SKIP waiver for test_ptp_scaffolding. Added six new SKIP waivers (marked as slow I/O) for Nemotron Ultra auto_dtype, Kimi K2 fp8_blockscale, and DeepSeek-V3 multi-GPU tests, with both plain and full-qualified prefixes.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

The changes are predominantly parameter value updates and configuration adjustments with minimal logic modifications. The gpu count and memory metric changes require verification that they align with hardware capabilities. The waiver additions are routine test management entries. The gc.collect() addition is a straightforward memory optimization with no complex interaction logic.

Pre-merge checks and finishing touches

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Description Check	⚠️ Warning	The PR description is substantially incomplete and consists almost entirely of the repository's template boilerplate with no actual content provided. The two critical sections—Description (explaining the issue and solution) and Test Coverage (listing relevant safeguarding tests)—are completely empty. The author has only checked a box in the PR Checklist without providing substantive information about what changes were made, why they were necessary, or how they are tested. This falls clearly into the "largely incomplete" category and does not meet the minimum requirements for a properly documented PR.	The author should complete the Description section by explaining the purpose of the cache-cleaning change and why it addresses the hang cases. The Test Coverage section should list the specific tests (e.g., test_e2e.py, conftest.py tests) that validate these changes. This information is essential for code review and understanding the intent of the modifications.
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The PR title "[None][test] Clean cache for certain easily hang cases" refers to a real and specific part of the changeset: the addition of gc.collect() in the torch_empty_cache fixture within conftest.py to improve memory pressure relief before cache eviction. This is clearly communicated and not misleading. While the title doesn't capture all changes in the PR (such as the test parameter updates from 2 to 8 GPUs and memory mapping adjustments across multiple test files), it does convey the primary infrastructure improvement intent for addressing hang cases. The title meets the criteria of being clear, specific, and referring to a legitimate aspect of the change without being off-topic or vague.

✨ Finishing touches

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📜 Recent review details

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Review profile: CHILL

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📥 Commits

Reviewing files that changed from the base of the PR and between d2c976c and a46b18e.

📒 Files selected for processing (6)

• tests/integration/defs/conftest.py (2 hunks)
• tests/integration/defs/test_e2e.py (2 hunks)
• tests/integration/test_lists/qa/llm_function_core.txt (1 hunks)
• tests/integration/test_lists/qa/llm_function_core_sanity.txt (1 hunks)
• tests/integration/test_lists/qa/llm_function_nim.txt (1 hunks)
• tests/integration/test_lists/waives.txt (1 hunks)

🧰 Additional context used

📓 Path-based instructions (3)

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🧠 Learnings (2)

📚 Learning: 2025-09-09T09:40:45.658Z

Learnt from: fredricz-20070104
PR: NVIDIA/TensorRT-LLM#7645
File: tests/integration/test_lists/qa/llm_function_core.txt:648-648
Timestamp: 2025-09-09T09:40:45.658Z
Learning: In TensorRT-LLM test lists, it's common and intentional for the same test to appear in multiple test list files when they serve different purposes (e.g., llm_function_core.txt for comprehensive core functionality testing and llm_function_core_sanity.txt for quick sanity checks). This duplication allows tests to be run in different testing contexts.

Applied to files:

• tests/integration/test_lists/qa/llm_function_core_sanity.txt
• tests/integration/test_lists/qa/llm_function_core.txt

📚 Learning: 2025-09-17T02:48:52.732Z

Learnt from: tongyuantongyu
PR: NVIDIA/TensorRT-LLM#7781
File: tests/integration/test_lists/waives.txt:313-313
Timestamp: 2025-09-17T02:48:52.732Z
Learning: In TensorRT-LLM, `tests/integration/test_lists/waives.txt` is specifically for waiving/skipping tests, while other test list files like those in `test-db/` and `qa/` directories are for different test execution contexts (pre-merge, post-merge, QA tests). The same test appearing in both waives.txt and execution list files is intentional - the test is part of test suites but will be skipped due to the waiver.

Applied to files:

• tests/integration/test_lists/waives.txt

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• GitHub Check: Pre-commit Check

🔇 Additional comments (3)

tests/integration/test_lists/qa/llm_function_core.txt (1)

637-637: GPU allocation update for multi-GPU test consistent across test lists.

Line 637 updates the Llama3.1-70B-BF16 multi-GPU test from 2-GPU to 8-GPU allocation. This change aligns with the broader PR objective to improve cache management for large models and is consistently reflected in related test configuration files (e.g., llm_function_nim.txt).

tests/integration/test_lists/qa/llm_function_nim.txt (1)

421-421: GPU allocation update consistent with other test lists.

Line 421 updates the same Llama3.1-70B-BF16 test to 8-GPU allocation, mirroring the change in llm_function_core.txt. This ensures consistent test expectations across different testing contexts (QA vs. NIM test suites).

tests/integration/test_lists/waives.txt (1)

349-351: New test waivers for slow I/O scenarios on H20-3e configuration.

Lines 349–351 add three SKIP waivers specifically for H20-3e hardware, all citing "slow I/O" as the reason. These waivers target large-model tests (Nemotron Ultra, DeepSeek-V3-671B) that are likely affected by the cache-cleaning improvements described in the PR. The H20-3e scope ensures these waivers do not impact other hardware configurations. This approach is consistent with existing waiver patterns in the file.

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[tensorrt-cicd]

PR_Github #22371 [ run ] triggered by Bot. Commit: a46b18e

[tensorrt-cicd]

PR_Github #22371 [ run ] completed with state SUCCESS. Commit: a46b18e
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[crazydemo]

/bot reuse-pipeline

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PR_Github #22419 [ reuse-pipeline ] triggered by Bot. Commit: a46b18e

[tensorrt-cicd]

PR_Github #22419 [ reuse-pipeline ] completed with state SUCCESS. Commit: a46b18e
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PR_Github #22439 [ reuse-pipeline ] triggered by Bot. Commit: 2e36e1b

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