Rank local checkpointing in DCP internal without collectives #989
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…#989) Summary: ### Context DCP metadata collectives become prohibitively expensive as the job scale grows. This PR introduces rank-local checkpointing (XLFormers style checkpointing) which basically saves and loads the checkpoint without any collective. The trade off for now is the dedupe and re-sharding. Support for these would be introduced soon. Differential Revision: D72390326
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…#989) Summary: Pull Request resolved: pytorch#989 ### Context DCP metadata collectives become prohibitively expensive as the job scale grows. This PR introduces rank-local checkpointing (XLFormers style checkpointing) which basically saves and loads the checkpoint without any collective. The trade off for now is the dedupe and re-sharding. Support for these would be introduced soon. Differential Revision: D72390326
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Summary:
Context
DCP metadata collectives become prohibitively expensive as the job scale grows. This PR introduces rank-local checkpointing (XLFormers style checkpointing) which basically saves and loads the checkpoint without any collective. The trade off for now is the dedupe and re-sharding. Support for these would be introduced soon.
Differential Revision: D72390326