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Guard NVshmem issues - #4093

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wdykas merged 2 commits into
NVIDIA:mainfrom
wdykas:nvshmem-checks
Apr 1, 2026
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wdykas merged 2 commits into
NVIDIA:mainfrom
wdykas:nvshmem-checks

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@wdykas wdykas commented Apr 1, 2026

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What does this PR do ?

Nvshmem has issues in older versions and also we can get seg faults in scaling if we dont set NVSHMEM_MAX_CTAS

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@wdykas
wdykas marked this pull request as ready for review April 1, 2026 17:23
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wdykas requested review from a team as code owners April 1, 2026 17:23
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wdykas commented Apr 1, 2026

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/ok to test eaa6fbf

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svcnvidia-nemo-ci requested a review from a team April 1, 2026 17:24
@svcnvidia-nemo-ci svcnvidia-nemo-ci added the Final Review PR is in the "final review" stage label Apr 1, 2026
@svcnvidia-nemo-ci svcnvidia-nemo-ci added this to the Core 0.16 milestone Apr 1, 2026
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wdykas commented Apr 1, 2026

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/ok to test b3146ec

@svcnvidia-nemo-ci svcnvidia-nemo-ci added Approved All necessary approvals have been made and removed Final Review PR is in the "final review" stage labels Apr 1, 2026
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wdykas enabled auto-merge April 1, 2026 18:57
@wdykas
wdykas added this pull request to the merge queue Apr 1, 2026
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🔄 Merge queue validation started!

You can track the progress here: https://github.com/NVIDIA/Megatron-LM/actions/runs/23865627009

Merged via the queue into NVIDIA:main with commit f9a61e3 Apr 1, 2026
64 of 67 checks passed
@wdykas
wdykas deleted the nvshmem-checks branch April 1, 2026 19:53
yangbofun pushed a commit to xlm-research/Megatron-LM that referenced this pull request May 22, 2026
Co-authored-by: root <root@nvl72063-T02.cm.cluster>
Co-authored-by: William Dykas <wdykas@oci-hsg-cs-001-vscode-03.cm.cluster>
yhgalaxy pushed a commit to yhgalaxy/Megatron-LM that referenced this pull request Jun 17, 2026
Co-authored-by: root <root@nvl72063-T02.cm.cluster>
Co-authored-by: William Dykas <wdykas@oci-hsg-cs-001-vscode-03.cm.cluster>
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
Co-authored-by: root <root@nvl72063-T02.cm.cluster>
Co-authored-by: William Dykas <wdykas@oci-hsg-cs-001-vscode-03.cm.cluster>
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
Co-authored-by: root <root@nvl72063-T02.cm.cluster>
Co-authored-by: William Dykas <wdykas@oci-hsg-cs-001-vscode-03.cm.cluster>

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test — b3146ecc Deployed Apr 1, 2026 by copy-pr-bot[bot] via cicd-wait-in-queue #10686
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5 participants