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how to calculate the tree based allreduce ib bw? #237

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echobinarybytes opened this issue Jul 22, 2024 · 0 comments

echobinarybytes commented Jul 22, 2024

Hi, developers.

In nccl, we have tree/nvlstree for tree based allreduce.
I found Here NVIDIA/nccl#209. for 2 node, we can calculate ib bw like : S/t

how about 3 node, n node for tree based allreduce? what's the result for ib bw?

Looking forward to your replay!!!

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