Skip to content

alltoall: use NCCL_WIN_DEFAULT for window registration - #382

Open
YeSho-cpp wants to merge 1 commit into
NVIDIA:masterfrom
YeSho-cpp:master
Open

alltoall: use NCCL_WIN_DEFAULT for window registration#382
YeSho-cpp wants to merge 1 commit into
NVIDIA:masterfrom
YeSho-cpp:master

Conversation

@YeSho-cpp

@YeSho-cpp YeSho-cpp commented May 13, 2026

Copy link
Copy Markdown

Fix this issue:

  • Use NCCL_WIN_DEFAULT when registering windows for AlltoAll, to avoid triggering symk init
  • GIN initialization must be driven solely by the DevComm getDevCommRequirements path

@YeSho-cpp YeSho-cpp mentioned this pull request May 13, 2026
Open
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

No reviews

Assignees

No one assigned

Labels

None yet

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

alltoall: NCCL_WIN_COLL_SYMMETRIC incorrectly triggers symk GIN init, causing AlltoAll DevComm GIN connection to be silently skipped

1 participant

@YeSho-cpp