Skip to content

Fix Megatron initialization with extra_args_provider - #4327

Merged
santhnm2 merged 2 commits into
NVIDIA:mainfrom
santhnm2:initialize_megatron_refactor
Apr 18, 2026
Merged

Fix Megatron initialization with extra_args_provider#4327
santhnm2 merged 2 commits into
NVIDIA:mainfrom
santhnm2:initialize_megatron_refactor

Conversation

@santhnm2

Copy link
Copy Markdown
Contributor

What does this PR do ?

Fix initialize_megatron calls that were no longer working post !4225.

Contribution process

Pre-checks

  • 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

Code review

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!

All PRs start as draft. If you open a non-draft PR, it will be automatically converted to draft.

Step 1: Mark PR as "Ready for Review"

  1. When your PR is ready, click Ready for Review.
  2. An oncall reviewer is auto-assigned and expert reviewers are notified based on your changes.
    • Some PRs may jump straight to step 2. This is determined by .github/CODEOWNERS.

⚠️ Only mark as ready once merge-conflicts are resolved and the CI is passing.
Final Review might get declined if these requirements are not fulfilled.

Step 2: Final Review

For PRs that change megatron/core, once all expert reviewers have approved, the Final Review label is applied automatically and final reviewers are assigned.

For PRs outside megatron/core, this step is skipped.

Step 3: Approved

Once all required reviewers have approved, the Approved label is applied automatically.

Merge

Any member of mcore-engineers will be able to merge your PR.

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.

Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com>
@copy-pr-bot

copy-pr-bot Bot commented Apr 15, 2026

Copy link
Copy Markdown

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.

@santhnm2
santhnm2 requested a review from maanug-nv April 15, 2026 20:22
@santhnm2
santhnm2 marked this pull request as ready for review April 15, 2026 20:22
@svcnvidia-nemo-ci
svcnvidia-nemo-ci requested a review from a team April 15, 2026 20:23
@Phlip79

Phlip79 commented Apr 15, 2026

Copy link
Copy Markdown
Member

/claude review

@claude claude Bot left a comment

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

LGTM

@Phlip79

Phlip79 commented Apr 15, 2026

Copy link
Copy Markdown
Member

/ok to test 8d15161

@svcnvidia-nemo-ci svcnvidia-nemo-ci added this to the Core 0.16 milestone Apr 15, 2026
@santhnm2
santhnm2 added this pull request to the merge queue Apr 16, 2026
@svcnvidia-nemo-ci

Copy link
Copy Markdown
Contributor

🔄 Merge queue validation started!

You can track the progress here: https://github.com/NVIDIA/Megatron-LM/actions/runs/24493908918

@github-merge-queue
github-merge-queue Bot removed this pull request from the merge queue due to failed status checks Apr 16, 2026
@santhnm2

Copy link
Copy Markdown
Contributor Author

/ok to test 71b9d0a

@santhnm2
santhnm2 enabled auto-merge April 18, 2026 22:09
@santhnm2
santhnm2 added this pull request to the merge queue Apr 18, 2026
@svcnvidia-nemo-ci

Copy link
Copy Markdown
Contributor

🔄 Merge queue validation started!

You can track the progress here: https://github.com/NVIDIA/Megatron-LM/actions/runs/24615988967

Merged via the queue into NVIDIA:main with commit afae25b Apr 18, 2026
68 checks passed
@santhnm2
santhnm2 deleted the initialize_megatron_refactor branch April 18, 2026 23:41
Victarry pushed a commit to yanring/Megatron-LM that referenced this pull request Apr 20, 2026
* origin/main: (286 commits)
  Rename MambaModel/MambaStack to HybridModel/HybridStack (NVIDIA#4099)
  Fix Megatron initialization with extra_args_provider (NVIDIA#4327)
  Fix RL to once again work with --skip-train (NVIDIA#4249)
  Add activation logging and tokens per expert logging (NVIDIA#3842)
  Make param_index_map always use unpacked (full numel) offsets (NVIDIA#4328)
  FA4 Inference (NVIDIA#4186)
  Fix RL reward due to stop token (NVIDIA#4096)
  cp: Fix UT timeout (NVIDIA#4310) (NVIDIA#4373)
  feat(ckpt): add --async-ckpt-use-cpu-shm argument (NVIDIA#4355)
  Update copy-pr-bot.yaml [skip ci]
  Docs: improve docstrings and comments in example training loop (NVIDIA#4041)
  Add QK layernorm support for dot-product attention in MambaModel (NVIDIA#4067)
  Fix bug with non-partial rollouts (NVIDIA#3964)
  [docs] ci: use parent-relative json_url for version picker (NVIDIA#4367)
  Add tables and histogram for RL staleness (NVIDIA#4097)
  Port DeepSeek Sparse Attention to `MambaModel` (NVIDIA#3553)
  docs: bump versions1.json to 0.17.0 (latest) (NVIDIA#4360)
  Fix potential coredump issue that occurs when saving a checkpoint (NVIDIA#1871)
  ci(gb200): add 1-node mr-github functional test variants (NVIDIA#4334)
  fix: wait for async P2P send before deallocating output tensor (NVIDIA#4047)
  ...

# Conflicts:
#	megatron/core/transformer/cuda_graphs.py
santhnm2 added a commit to santhnm2/Megatron-LM that referenced this pull request Apr 20, 2026
Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com>
yangbofun pushed a commit to xlm-research/Megatron-LM that referenced this pull request May 22, 2026
Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com>
yhgalaxy pushed a commit to yhgalaxy/Megatron-LM that referenced this pull request Jun 17, 2026
Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com>
Signed-off-by: yhgalaxy <yhgalaxy@outlook.com>
jon-barker pushed a commit to jon-barker/Megatron-LM that referenced this pull request Jul 10, 2026
Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com>
Signed-off-by: Jon Barker <jbarker@aws-cmh-slurm-1-vscode-02.cm.cluster>
terminator123 pushed a commit to 021ai/Megatron-LM that referenced this pull request Aug 3, 2026
Signed-off-by: Keshav Santhanam <ksanthanam@nvidia.com>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Projects

None yet

Development

Successfully merging this pull request may close these issues.

3 participants