Fix beam search generation for GPT2 and T5 on model parallelism #9219
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patrickvonplaten
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Dec 21, 2020
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@sgugger can you maybe review as well and merge if ok? |
sgugger
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Dec 21, 2020
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What does this PR do?
This PR fixes beam search generation crash when the model layers are distributed on several devices (model parallelism). I have also added a test which showcase the bug on master and pass with the provided fix. Fixes issue #9200
This is my first contribution to Transformers, so please let me know if something seems wrong or can be improved! The added test doesn't actually test anything at the moment, just raises an error on master. Looking forward to some feedback on how you'd like to see that.
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Who can review?
@LysandreJik
@alexorona
@patrickvonplaten