Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

nccl topo about PHB and NODE #1502

Open
jianzi123 opened this issue Oct 31, 2024 · 1 comment
Open

nccl topo about PHB and NODE #1502

jianzi123 opened this issue Oct 31, 2024 · 1 comment

Comments

@jianzi123
Copy link

jianzi123 commented Oct 31, 2024 •
edited
Loading

Image

Like this graph, NET/1 and GPU(0) in the same numa, NET/0 and GPU(1) in the same numa, all under the same rc, why does nccl recognize PHB instead of NODE
@kiskra-nvidia
Copy link
Member

Could you include more of NCCL's debug output, and maybe also the topo file (generated using NCCL_TOPO_DUMP_FILE)? What does nvidia-smi topo -m say?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@jianzi123 @kiskra-nvidia