Fix Zero3 contiguous grads, reduce scatter false accuracy issue #4321
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it is a corner case met when running Zero3 on flan-t5 HF model. Where HF auto bucket size becomes exactly the same size if hidden_size^2 This is the exact size of some of the params. due to the bug the params are not being reduced during backward.
nelyahu
requested review from
jeffra,
tjruwase,
samyam and
mrwyattii
as code owners
tjruwase
approved these changes
Sep 14, 2023
CurryRice233
pushed a commit
to CurryRice233/DeepSpeed
that referenced
this pull request
Sep 15, 2023
* origin/master: (48 commits) Fix autotune to support Triton 2.1 (microsoft#4340) Fix skipped inference tests (microsoft#4336) Suppress noise (microsoft#4310) Fix a bug in the implementation of dequantization for inference (microsoft#3433) DS-Chat BLOOM: Fix Attention mask (microsoft#4338) clear redundant timers (microsoft#4308) Add release version checking (microsoft#4328) Fix Zero3 contiguous grads, reduce scatter false accuracy issue (microsoft#4321) Clean up modeling code (microsoft#4320) Handle empty parameter groups (microsoft#4277) Update README.md (microsoft#4316) README update (microsoft#4303) Update release and bump patch versioning flow (microsoft#4286) added a bert-model check for triton (microsoft#4266) ZeRO-Inference v2 release bump to 0.10.4 Update index.md (microsoft#4297) fix user args parsing of string with spaces on runner (microsoft#4265) ZeRO-Inference refresh (microsoft#4197) AMD Kernel Compatibility Fixes (microsoft#3180) ...
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it is a corner case met when running Zero3 on flan-t5 HF model. Where HF auto bucket size becomes exactly the same size if hidden_size^2 This is the exact size of some of the params. due to the bug the params are not being reduced during backward.