chore(beep boop 🤖): Bump uv.lock (r0.4.0, mcore-core_r0.17.0) (2026-04-18)

[svcnvidia-nemo-ci]

🚀 PR to bump uv.lock in r0.4.0.

🤖 This PR will be merged automatically once CI passes.

Summary by CodeRabbit

• Chores
  • Updated Megatron-LM dependency to the latest version for improved performance and stability.

[svcnvidia-nemo-ci]

/ok to test ac3c817

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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 Plus

Run ID: 5c8b4604-1e52-4325-9c44-6129a16a8d6f

📥 Commits

Reviewing files that changed from the base of the PR and between 9c2b3e4 and ac3c817.

⛔ 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 pointer and corresponding commit reference from d7288711ba278d160d2a5a22c099915c9fe1395c to 779c4989c62af93371fb3d6d221faacfaaa91603. The changes are purely reference updates with no structural or functional modifications.

Changes

Cohort / File(s)	Summary
Megatron-LM Submodule Update .main.commit, 3rdparty/Megatron-LM	Updated submodule pointer and commit reference to newer Megatron-LM version.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Megatron-Bridge#3352 — Updates the same Megatron-LM submodule pointer and .main.commit file.
• Megatron-Bridge#2968 — Modifies identical files (.main.commit and 3rdparty/Megatron-LM submodule) to update Megatron-LM commit references.
• Megatron-Bridge#3335 — Changes the 3rdparty/Megatron-LM git submodule pointer to a different commit hash.

Suggested reviewers

• yaoyu-33
• ko3n1g

🚥 Pre-merge checks | ✅ 3 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title mentions 'Bump uv.lock' but the actual changes are to .main.commit and 3rdparty/Megatron-LM submodule pointer, not uv.lock files.	Update the title to accurately reflect the changes: updating Megatron-LM submodule commit references, or verify if uv.lock changes are missing from the diff.

✅ 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	Minor routine maintenance change updating submodule pointer with existing test infrastructure and CI validation.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bump-ci-container-2026-04-18-r0.4.0-core_r0.17.0

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