[UIL] Support allgather with different message size in torch flagcx backend#459
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yanminjia wants to merge 3 commits into
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[UIL] Support allgather with different message size in torch flagcx backend#459yanminjia wants to merge 3 commits into
yanminjia wants to merge 3 commits into
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PR Category
UIL
PR Types
New Feature
PR Description
Support allgather with different message size in torch flagcx backend. In case of MoE training with TP enabled, after dispatch communication (post_dispatch) in the forward pass, the dispatched tokens (different number) should be aggregated in TP communication group via allgather with different size message.