botbw 3f7e3131d9 [gemini] optimize reduce scatter d2h copy (#5760) ...

* [gemini] optimize reduce scatter d2h copy

* [fix] fix missing reduce variable

* [refactor] remove legacy async reduce scatter code

* [gemini] missing sync

* Revert "[refactor] remove legacy async reduce scatter code"

This reverts commit 58ad76d466.

* [gemini] further optimize with async all reduce

* [fix] pass flag from manager to chunk

2024-06-05 14:23:13 +08:00

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