[Optimization] Incremental checkpoint save for dcp on torch 2.7.x (ARM CPU optimization)#1525
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tina-wen wants to merge 1 commit intoInternLM:mainfrom
Open
[Optimization] Incremental checkpoint save for dcp on torch 2.7.x (ARM CPU optimization)#1525tina-wen wants to merge 1 commit intoInternLM:mainfrom
tina-wen wants to merge 1 commit intoInternLM:mainfrom
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Description
This PR optimizes
dcp.saveperformance on ARM CPUs by implementing incremental metadata saving for torch 2.7.1.Implementation
patch_for_dcp_finishconfig flagstorage_writer/plannerfor dcp.savePerformance
Checkpoint saving performance improved by up to 85%
Compatibility
✅ Works with existing ckpt_save
✅ No precision issues on recovery
✅ No PyTorch/PTA source changes