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Edenzzzz 2a25a2aff7 [Feature] optimize PP overlap (#5735) ... * update to fully overlap, still debugging * improve interface * fixed deadlock bug * debug NaN loss * (experimental) use one comm group for send_fw_recv_fw to fix NaN * cleaned up interfaces; use one batch p2p for all * clean up; removed the double p2p batch case * p2p test passsed * improve overlap: send fwd before backward * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * tentatively use 2 p2p batches * remove two p2p batches * fix typos * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * remove pp.sh --------- Co-authored-by: Edenzzzz <wtan45@wisc.edu> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: root <root@notebook-c55824c0-7742-45e8-9591-c855bb77ad29-0.notebook-c55824c0-7742-45e8-9591-c855bb77ad29.colossal-ai.svc.cluster.local>		5 months ago
..
test_pipeline_utils	[shardformer] refactor pipeline grad ckpt config (#5646)	7 months ago
test_schedule	[misc] refactor launch API and tensor constructor (#5666)	7 months ago
test_p2p_communication.py	[Feature] optimize PP overlap (#5735)	5 months ago
test_stage_manager.py	[Feature] optimize PP overlap (#5735)	5 months ago