[Distributed] [Cherry-Pick] Support fused param buffer and ipc meta for optimizer states and parameter storage #70520
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…ddle#69625) * [Distributed] support fuse optimizer * [Distributed] polish fuse optimizer codes * [Distributed] add UT for fused optimizer * [Distributed] support training from scratch with fuse optimizer states enabled * [Distributed] fix sharding UT * [Distributed] fix multiprocessing cuda env in distributed usage * [Distributed] add fused optimizer states ut * [Distributed] fix other UT * [Distributed] remove reduction hack fix
SylarTiaNII
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wanghuancoder
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PR Category
Distributed Strategy
PR Types
New features
Description
CP from: #69625; #70029; #70246; #70323
This is precondition for using Flash Checkpoints on PaddleNLP
Fuse optimizer states and master weights to continuous storage format. And those variables can be obtained with FusionStorageHelper through CUDA IPC with no cost.
set
to enable fusion for sharding optimizer.
[Pcard-88789]