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Fix ORPOTrainer loss scaling with gradient accumulation #3716

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Merged
merged 1 commit into from
Jul 10, 2025

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Aratako
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@Aratako Aratako commented Jul 10, 2025

What does this PR do?

This PR addresses an issue in ORPOTrainer where the training loss is not correctly scaled when using gradient accumulation. When gradient_accumulation_steps > 1, the loss was not being divided by the number of accumulation steps, leading to an incorrectly inflated reported training loss.

The fix is identical to the fix applied in other PRs, such as #2645.

Fixes #2628

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  • This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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  • Did you write any new necessary tests?

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@kashif kashif merged commit c949b66 into huggingface:main Jul 10, 2025
9 of 10 checks passed
marcandrelarochelle pushed a commit to marcandrelarochelle/trl that referenced this pull request Jul 29, 2025
@Aratako Aratako deleted the fix-orpo-grad-acc-scaling branch July 31, 2025 08:57
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