Lightning-AI/pytorch-lightning

enable loading `universal checkpointing` checkpoint in `DeepSpeedStrategy`

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#20.065 geöffnet am 9. Juli 2024

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featurehelp wantedstrategy: deepspeed

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Beschreibung

Description & Motivation

After I trained a model in some numbers of gpus, say, 8 gpus for a while, It's difficult to load the checkpoint to 16 gpus with optimizer and model states unchanged. The deepspeed has developed the universal checkpointing strategy to solve this problem, but I didn't see the pytorch-lightning has this feature.

Pitch

I want the pytorch-lightning could support this feature

Alternatives

try to add universal_checkpoint as a param of DeepSpeedStrategy and modify the class refering to https://www.deepspeed.ai/tutorials/universal-checkpointing/

Additional context

No response

cc @borda @awaelchli

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