deepspeedai / deepspeedai/DeepSpeed
Define affine IR for checkpointing
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@Achyuthan-S is already working on this.
Since Aug 28, 2026.
enhancement
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Description
This sub-issue (feature request) tracks the task of define IR spec for non-semantic checkpointing. The idea is describe shard operations as affine operations, this will help use achieve goal of both phase 1 (UC_info for UCP conversion) and phase 2 (direct checkpointing transfer between topologies)
The outcome is defined as a spec document where we can implement UC_info description (both in memory structure and in file format), checkpoint conversion in phase 1, and checkpoint transfer component in phase 2.
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