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Add option distributed_size to MegatronDistributedFusedAdam #12728

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yuantailing
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Important

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An outdated branch is never blocking the merge of a PR.
Please reach out to the automation team before pressing that button.

What does this PR do ?

Add option distributed_size to MegatronDistributedFusedAdam. This enables setting distributed_size to a proper value instead of using torch.cuda.device_count().

Collection: [Note which collection this PR will affect]

Changelog

  • Add option distributed_size to MegatronDistributedFusedAdam.

Usage

  • You can potentially add a usage example below
# Add a code snippet demonstrating how to use this 

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@github-actions github-actions bot added the core Changes to NeMo Core label Mar 21, 2025
@alpha0422
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Hi @Victor49152, could you help review this PR?

Signed-off-by: Tailing Yuan <yuantailing@gmail.com>
Signed-off-by: Tailing Yuan <yuantailing@gmail.com>
@alpha0422
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Hi @gautham-kollu, could you also help review and merge this PR?
cc @mmarcinkiewicz

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github-actions bot commented Apr 9, 2025

This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days.

@github-actions github-actions bot added the stale label Apr 9, 2025
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This PR was closed because it has been inactive for 7 days since being marked as stale.

@github-actions github-actions bot closed this Apr 16, 2025
@yuantailing
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Move to #13102

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