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Fix token counting to use attention mask instead of ids #802

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merged 3 commits into from
Dec 14, 2023

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dakinggg
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@dakinggg dakinggg commented Dec 13, 2023

This fixes off by one errors when pad token and eos token are the same thing.

Manual test compare to before, there are 1440 more tokens counted for a run of length 30 batches * 48 samples per batch, as expected, because there is one eos token per sample.
Screenshot 2023-12-13 at 4 24 13 PM

@dakinggg dakinggg marked this pull request as ready for review December 14, 2023 00:29
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@alextrott16 alextrott16 left a comment

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Thanks for doing this. Definitely makes a lot more sense to be counting based on attention mask. Approve.

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@irenedea irenedea left a comment

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LGTM! Just had a couple questions.

tests/data/test_dataloader.py Show resolved Hide resolved
tests/data/test_dataloader.py Show resolved Hide resolved
@dakinggg dakinggg merged commit 5388dc0 into mosaicml:main Dec 14, 2023
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@dakinggg dakinggg deleted the fix-eot-token-counting branch February 10, 2024 07:30
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3 participants