[https://nvbugs/6611817][test] Waive known-flaky disagg + Nemotron tests on DGX_H100

[brnguyen2]

Description

Standalone waives-only PR: SKIP-waive three tests that flake on main CI,
each with a real tracking bug. These were pulled out of #17482 so they land
fast with real bug references instead of the placeholder-then-amend flow.

All three flake on stage DGX_H100-4_GPUs-PyTorch-Others-2, independent of any
in-flight branch (they fail across 110+ unrelated MRs and multiple users on main):

Test	Flake (14d)	Bug
test_disaggregated_serving.py::TestLlama3_1_8BInstruct::test_tp_pp_symmetric[MMLU-tp2pp1]	1.3% / 113 MRs	nvbugs/6611817 (new)
test_auto_scaling.py::test_disagg_server_restart[etcd-round_robin]	1.2% / 112 MRs	nvbugs/6611817 (shared)
test_llm_api_pytorch.py::TestNemotronV3Super::test_nvfp4_4gpus_hopper_w4a16	flaky	nvbugs/6478723 (existing, TRTLLM-14447)

The first two co-fail on the same stage in the same runs — a shared disagg
server timeout/hang — so they share one new tracking bug (6611817). The
Nemotron nvfp4 Hopper flake folds into its existing open tracking bug.

Test Coverage

waives-only change (no source). Validated by the pre-commit hooks that ran on
commit: "Validate test list entries exist in source files (AST)", "Checks for
duplicated test items in waives.txt", and the sort/format checks — all passed.

PR Checklist

• Please check this after reviewing the above items as appropriate for this PR.

Dev Engineer Review

• Added three SKIP waivers to tests/integration/test_lists/waives.txt.
• The waivers cover two disaggregated serving tests linked to nvbugs/6611817.
• The Nemotron nvFP4 Hopper test is linked to nvbugs/6478723 (TRTLLM-14447).
• No source or public API changes were made.
• Pre-commit validation confirmed valid formatting, sorting, test entries, and no duplicates.

Verdict: sufficient.

QA Engineer Review

• Only tests/integration/test_lists/waives.txt changed.
• Added three waiver entries:
  • Disaggregated-serving Llama 3.1 symmetric MMLU test.
  • PyTorch Nemotron V3 Super NVFP4 Hopper test.
  • Disaggregated server restart test with etcd and round-robin scaling.
• No test-db/ or qa/ files were modified.
• 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: 4b6bda02-4cba-48fa-bda0-f45ad4d815b7

📥 Commits

Reviewing files that changed from the base of the PR and between 7a3b1bf and 4d406ed.

📒 Files selected for processing (1)

• tests/integration/test_lists/waives.txt

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Walkthrough

Three integration tests are added to the waiver list. Each entry references NVBug 6611817.

Changes

Integration test waivers

Layer / File(s)	Summary
Add skipped integration test entries tests/integration/test_lists/waives.txt	Adds skip entries for the Llama 3.1 symmetric MMLU test, the Nemotron V3 Super NVFP4 Hopper test, and the etcd round-robin disaggregated server restart test.

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

Merge Risk: ⚪ Minimal · up to 4d406

This PR only adds three known-flaky test waivers and does not change product or runtime code; no actionable merge-blocking risk remains after normal checks and review.

Suggested reviewers: bowenfu

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main change: waiving known-flaky disaggregated serving and Nemotron tests on DGX_H100.
Description check	✅ Passed	The description explains the issue, lists all three waived tests and tracking bugs, documents validation, and includes the required checklist.
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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_{Comment @coderabbitai help to get the list of available commands.}

[brnguyen2]

/bot skip --comment "waives only PR"

[tensorrt-cicd]

PR_Github #66322 [ skip ] triggered by Bot. Commit: 4d406ed Link to invocation

[tensorrt-cicd]

PR_Github #66322 [ skip ] completed with state SUCCESS. Commit: 4d406ed
Skipping testing for commit 4d406ed

Link to invocation