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[Fix] Prevent resource leak warnings - #3361

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yaox12 wants to merge 2 commits into
NVIDIA:mainfrom
yaox12:clean_up_close_warning
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[Fix] Prevent resource leak warnings#3361
yaox12 wants to merge 2 commits into
NVIDIA:mainfrom
yaox12:clean_up_close_warning

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@yaox12

@yaox12 yaox12 commented Feb 11, 2026

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What does this PR do ?

CP #3216 to main.

Warning: WARNING: destroy_process_group() was not called before program exit which can leak resources. For more info

It occurs when compiler_helpers() function failed to complete the subprocess.

⚠️ For major changes (either in lines of code or in its impact), please make sure to first share a design doc with the team. If you're unsure what's the best way to do so, contact the @mcore-oncall.

Contribution process

flowchart LR
    A[Pre-checks] --> B[PR Tests]
    subgraph Code Review/Approval
        C1[Expert Review] --> C2[Final Review]
    end
    B --> C1
    C2 --> D[Merge]
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  • I want this PR in a versioned release and have added the appropriate Milestone (e.g., Core 0.8)
  • I have added relevant unit tests
  • I have added relevant functional tests
  • I have added proper typing to my code Typing guidelines
  • I have added relevant documentation
  • I have run the autoformatter.sh on my PR

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The following process is enforced via the CODEOWNERS file for changes into megatron/core. For changes outside of megatron/core, it is up to the PR author whether or not to tag the Final Reviewer team.

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Feel free to message or comment the @mcore-oncall to help accelerate your merge into main. The less complex your PR is, the faster it will be approved and merged!

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Final Review might get declined if these requirements are not fulfilled.

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If this PR also needs to be merged into core_r* release branches, after this PR has been merged, select Cherry-pick to open a new PR into the release branch.

For MRs into `dev` branch The proposed review process for `dev` branch is under active discussion.

MRs are mergable after one approval by either eharper@nvidia.com or zijiey@nvidia.com.

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Co-authored-by: Xin Yao <xiny@nvidia.com>
@yaox12
yaox12 requested a review from a team as a code owner February 11, 2026 02:14
@yaox12 yaox12 added the Expert Review [deprecated] Apply this label to indicate that your PR is ready for expert review. label Feb 11, 2026
@yaox12
yaox12 requested review from a team as code owners February 11, 2026 02:14
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copy-pr-bot Bot commented Feb 11, 2026

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This pull request requires additional validation before any workflows can run on NVIDIA's runners.

Pull request vetters can view their responsibilities here.

Contributors can view more details about this message here.

@ko3n1g
ko3n1g requested a review from a team February 11, 2026 02:14
Signed-off-by: Xin Yao <xiny@nvidia.com>
@yaox12 yaox12 closed this Feb 11, 2026
@yaox12
yaox12 deleted the clean_up_close_warning branch March 3, 2026 08:57
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