chore(beep boop 🤖): Bump uv.lock (main, mcore-main) (2026-03-20)

[svcnvidia-nemo-ci]

🚀 PR to bump uv.lock in main.

🤖 This PR will be merged automatically once CI passes.

Summary by CodeRabbit

• Chores
  • Updated project dependencies to latest versions.

[svcnvidia-nemo-ci]

/ok to test 1cc3577

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[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: Pro

Run ID: 6aa27a93-779d-4806-9997-16694079ac64

📥 Commits

Reviewing files that changed from the base of the PR and between ba68841 and 1cc3577.

⛔ Files ignored due to path filters (1)

• uv.lock is excluded by !**/*.lock

📒 Files selected for processing (2)

• .main.commit
• 3rdparty/Megatron-LM

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📝 Walkthrough

Walkthrough

This PR updates the Megatron-LM submodule reference from commit 9ed8b0c4ac8e65d80fb35eecb3656c96b30df943 to f456199700bc4ad56881cb76b9d7140b82841da4 across two tracking files.

Changes

Cohort / File(s)	Summary
Megatron-LM Submodule Version Pinning .main.commit, 3rdparty/Megatron-LM	Updated submodule commit reference from 9ed8b0c to f456199 to pin the Megatron-LM version.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• chore(beep boop 🤖): Bump uv.lock (main) (2026-03-16) #2813: Also modifies both .main.commit and 3rdparty/Megatron-LM submodule pointer to bump the stored commit hash.
• chore(beep boop 🤖): Bump uv.lock (main) (2026-03-18) #2873: Updates the same .main.commit file and 3rdparty/Megatron-LM submodule pointer with different target commit hashes.
• chore(beep boop 🤖): Bump uv.lock (main) (2026-03-09) #2703: Updates the 3rdparty/Megatron-LM git submodule pointer to a different tracked commit.

Suggested reviewers

• yaoyu-33
• maanug-nv
• ko3n1g

🚥 Pre-merge checks | ✅ 3 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The PR title mentions bumping uv.lock but the actual changes update git submodule references and commit identifiers, not dependency lock files.	Update the title to accurately reflect the actual changes, such as 'chore: Update Megatron-LM submodule reference' or similar.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Test Results For Major Changes	✅ Passed	PR contains only minor dependency and submodule reference updates with no code logic changes, new features, breaking changes, or significant refactoring. The custom check explicitly allows passing if changes are minor, even without comprehensive test result documentation.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bump-ci-container-2026-03-20-main-main

📝 Coding Plan

• Generate coding plan for human review comments

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