support op sharding rules via decompositions#322
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pianpwk wants to merge 3 commits intometa-pytorch:mainfrom
Open
support op sharding rules via decompositions#322pianpwk wants to merge 3 commits intometa-pytorch:mainfrom
pianpwk wants to merge 3 commits intometa-pytorch:mainfrom
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When an op has no registered sharding strategy, try PyTorch's DecompShardingStrategy before falling back to all-Replicate. This traces the op's decomposition on meta tensors, propagating placements through sub-ops that already have strategies, to derive valid sharding options automatically.
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probably good to wait until ci is green |
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referencing pytorch/pytorch#171652