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[https://nvbugs/6567057][infra] Unwaive disagg helix test after port reservation race fix - #17868

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JunyiXu-nv merged 1 commit into
NVIDIA:mainfrom
JunyiXu-nv:dev-junyix-fix-unwaive-6567057
Aug 19, 2026
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[https://nvbugs/6567057][infra] Unwaive disagg helix test after port reservation race fix#17868
JunyiXu-nv merged 1 commit into
NVIDIA:mainfrom
JunyiXu-nv:dev-junyix-fix-unwaive-6567057

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@JunyiXu-nv

@JunyiXu-nv JunyiXu-nv commented Aug 18, 2026

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Description

Removes a stale waiver from tests/integration/test_lists/waives.txt:

accuracy/test_disaggregated_serving.py::TestDeepSeekV3Lite::test_auto_dtype_with_helix[fifo_v2-cudagraph:with_padding-pp1dp2cp2] SKIP (https://nvbugs/6567057)

The waiver was added in #17340 during post-merge 2887 triage, when trtllm-serve's port
reservation was subject to a TOCTOU race: get_free_ports() bound and closed a probe socket,
so another process could take the port before the real bind. The stage log for that failure shows:

[_utils] [get_free_ports] pid=3520683 reserved ports=[58059] via bind-then-close (subject to TOCTOU reuse before rebinding)
OSError: [Errno 98] Address already in use
RuntimeError: Failed to bind socket to localhost:58059: [Errno 98] Address already in use.
    Port holder(s): 127.0.0.1:58059 status=LISTEN pid=3532210 name=trtllm-serve

That race was eliminated by 9997d3f (#17460), which switches the server to --port 0 +
--report_addr so the socket is held until the real bind. NVBug 6567057 is closed as a
duplicate of 6435121 (the bug that 9997d3f fixes), so the waiver outlived its cause.

Test Coverage

accuracy/test_disaggregated_serving.py::TestDeepSeekV3Lite::test_auto_dtype_with_helix[fifo_v2-cudagraph:with_padding-pp1dp2cp2]

Tagged stage: pre_merge in l0_dgx_b200.yml (8-GPU B200, pytorch/mpi), so the standard
pipeline exercises it — no --extra-stage needed.

PR Checklist

  • PR title has the format [JIRA/NVBUG/None][type] Summary
  • Commit is signed off (DCO)
  • Test waiver removal is verified against the merged fix rather than assumed

Dev Engineer Review

  • Removed the stale waiver for TestDeepSeekV3Lite::test_auto_dtype_with_helix with fifo_v2-cudagraph:with_padding-pp1dp2cp2.
  • Limited the change to tests/integration/test_lists/waives.txt.
  • Preserved the waiver file format.
  • Made no runtime, API, or configuration changes.
  • The removal is consistent with the fix for the trtllm-serve port reservation race.

QA Engineer Review

  • Modified no test-db/ or qa/ files.
  • Removed one waiver entry from tests/integration/test_lists/waives.txt.
  • The test is covered by the stage: pre_merge configuration in l0_dgx_b200.yml.
  • Verdict: needs follow-up because CBTS coverage data is unavailable.

@JunyiXu-nv

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/bot run

@coderabbitai

coderabbitai Bot commented Aug 18, 2026

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Review Change Stack

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: 68e2d8a9-1d27-4fed-8e83-2672290c493d

📥 Commits

Reviewing files that changed from the base of the PR and between ee64209 and 3bc5eb1.

📒 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.


Walkthrough

Updates tests/integration/test_lists/waives.txt by removing obsolete skip entries, adding skips for current failing cases, and narrowing one B300 DeepSeek V3 Lite waiver to overlap_off.

Changes

Integration waiver maintenance

Layer / File(s) Summary
Update integration skip coverage
tests/integration/test_lists/waives.txt
Removes obsolete waivers and adds or updates entries for Nemotron, Mistral, Exaone, Kimi, DeepSeek, Qwen, multimodal, speculative-decoding, serving, rebalancing, and RTX PRO 6000 cases.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 3bc5e

This change only removes a stale test waiver, and no actionable merge-blocking risk remains after normal checks and review.

Possibly related PRs

Suggested reviewers: bowenfu

🚥 Pre-merge checks | ✅ 5
✅ Passed checks (5 passed)
Check name Status Explanation
Description check ✅ Passed The description explains the stale waiver, its root cause, the merged fix, test coverage, and relevant checklist items.
Title check ✅ Passed The title follows the required format and clearly identifies the infrastructure change: removing the disaggregated Helix test waiver after the port race fix.
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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PR_Github #66986 [ run ] triggered by Bot. Commit: ee64209 Link to invocation

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PR_Github #66986 [ run ] completed with state FAILURE. Commit: ee64209
/LLM/main/L0_MergeRequest_PR pipeline #54530 completed with status: 'UNSTABLE'

CI Report

⚠️ Multi-GPU Label Required:
Multi-GPU tests require the ci: full pre-merge approved label on this PR. Ask a member of NVIDIA/trt-llm-ci-approvers to add the label, then re-trigger CI with the same bot command (no rebase needed).

⚠️ Action Required:

  • Please check the failed tests and fix your PR
  • If you cannot view the failures, ask the CI triggerer to share details
  • Once fixed, request an NVIDIA team member to trigger CI again

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/bot run --disable-fail-fast

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PR_Github #67239 [ run ] triggered by Bot. Commit: ee64209 Link to invocation

…reservation race fix

The waiver was added during post-merge 2887 triage, when trtllm-serve's
port reservation was subject to a TOCTOU race: get_free_ports() bound and
closed a probe socket, so another process could take the port before the
real bind. The stage log shows the resulting failure:

  [_utils] [get_free_ports] pid=3520683 reserved ports=[58059] via
      bind-then-close (subject to TOCTOU reuse before rebinding)
  OSError: [Errno 98] Address already in use
  RuntimeError: Failed to bind socket to localhost:58059: [Errno 98]
      Address already in use. Port holder(s): 127.0.0.1:58059
      status=LISTEN pid=3532210 name=trtllm-serve

That race was eliminated by commit 9997d3f, which switches the server
to --port 0 + --report_addr so the socket is held until the real bind.
NVBug 6567057 is closed as a duplicate of 6435121, so the waiver is stale
and the test can run in CI again.

Since the waiver was written, the test was split into -overlap_on and
-overlap_off parametrizations, so both waiver lines are removed. In
l0_dgx_b200.yml (8-GPU B200, pytorch/mpi) -overlap_on is tagged
stage: pre_merge and -overlap_off is stage: post_merge, so the standard
pipeline exercises the -overlap_on variant.

Signed-off-by: JunyiXu-nv <219237550+JunyiXu-nv@users.noreply.github.com>
@JunyiXu-nv
JunyiXu-nv force-pushed the dev-junyix-fix-unwaive-6567057 branch from ee64209 to 3bc5eb1 Compare August 19, 2026 02:53
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/bot run --disable-fail-fast

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PR_Github #67246 [ run ] triggered by Bot. Commit: 3bc5eb1 Link to invocation

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PR_Github #67239 [ run ] completed with state ABORTED. Commit: ee64209

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PR_Github #67246 [ run ] completed with state SUCCESS. Commit: 3bc5eb1
/LLM/main/L0_MergeRequest_PR pipeline #54774 completed with status: 'SUCCESS'

CI Report

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JunyiXu-nv merged commit d431758 into NVIDIA:main Aug 19, 2026
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4 participants