[https://nvbugs/6633268][test] waive DeepSeekV3Lite bfloat16 mtp_nextn=2 v2_kv_cache test on DGX B200

[xxi-nv]

Description

Waive accuracy/test_llm_api_pytorch.py::TestDeepSeekV3Lite::test_bfloat16[mtp_nextn=2-attention_dp=True-cuda_graph=True-overlap_scheduler=True-torch_compile=False-enable_chunked_prefill=False-v2_kv_cache=True] on DGX_B200, tracked by https://nvbugs/6633268.

The test failed in pre-merge LLM/main/L0_MergeRequest_PR #54717, stage DGX_B200-PyTorch-6, with Test terminated unexpectedly.

OpenSearch history over the last 30 days on DGX_B200 shows the case is flaky rather than consistently broken: 13 failures out of 1000 runs (1.3%), flip-flop rate 28.9%, longest failure streak 1.

The waive is scoped to full:DGX_B200/ so that coverage on other platforms is preserved. This case also runs from l0_h100.yml, which stays enabled. An existing waive for the same case is scoped to full:RTX_PRO_6000_Blackwell_Server_Edition/ (https://nvbugs/6451323) and does not cover DGX_B200.

Test Coverage

N/A - test list change only.

PR Checklist

Please review the following before submitting your PR:

• PR description clearly explains what and why.
• PR follows the PR title format.
• Test cases are provided for new code paths (see test instructions)
• Any new dependencies have been scanned for license and vulnerabilities
• CODEOWNERS updated if ownership changes
• Documentation updated as needed
• The reviewers assigned automatically/manually are appropriate for the PR.

Dev Engineer Review

• Added one waiver in tests/integration/test_lists/waives.txt.
• The waiver targets the DGX B200 DeepSeekV3Lite bfloat16 mtp_nextn=2 v2_kv_cache test.
• The waiver is tracked by NVBUG 6633268.
• The scope remains limited to full:DGX_B200/.
• No public API or code changes were made.
• The change is correctly scoped and has low review risk.

QA Engineer Review

• No test-db/ or qa/ files were modified.
• Added one DGX B200 waiver entry.
• Removed no entries.
• CBTS coverage data is unavailable.
• Verdict: needs follow-up.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 3857001b-7b94-4fde-83db-d773973c2af0

📥 Commits

Reviewing files that changed from the base of the PR and between f42674a and d9f93a6.

📒 Files selected for processing (1)

• tests/integration/test_lists/waives.txt

Included review availability: Your plan provides up to 12 included reviews per hour; 11 remain after this review.

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Walkthrough

The integration test waiver list adds a DGX_B200 waiver for the configured TestDeepSeekV3Lite::test_bfloat16 scenario.

Changes

Integration test waiver

Layer / File(s)	Summary
DGX_B200 test waiver tests/integration/test_lists/waives.txt	Adds a waiver for TestDeepSeekV3Lite::test_bfloat16 with MTP, attention-DP, CUDA-graph, overlap-scheduler, and v2 KV-cache settings.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to d9f93

This localized test-waiver change does not alter product or runtime behavior, and the waiver remains limited to DGX_B200 while other listed coverage stays enabled. No actionable merge-blocking risk remains beyond normal validation of the active test list.

Suggested reviewers: brnguyen2

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the NVBugs ticket, test waiver, affected configuration, and DGX B200 platform.
Description check	✅ Passed	The description explains the waiver rationale, scope, evidence of flakiness, test coverage, and checklist status.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[xxi-nv]

/bot skip --comment "waive the flacky test to unblock"

[tensorrt-cicd]

PR_Github #67344 [ skip ] triggered by Bot. Commit: d9f93a6 Link to invocation

[tensorrt-cicd]

PR_Github #67344 [ skip ] completed with state FAILURE. Commit: d9f93a6

Link to invocation

[xxi-nv]

/bot skip --comment "waive the flacky test to unblock"

[tensorrt-cicd]

PR_Github #67393 [ skip ] triggered by Bot. Commit: d9f93a6 Link to invocation

[tensorrt-cicd]

PR_Github #67393 [ skip ] completed with state SUCCESS. Commit: d9f93a6
Skipping testing for commit d9f93a6

Link to invocation