verl-project/verl

[FR] Better metric reduction utility

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#1 508 ouverte le 13 mai 2025

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enhancementfeature requestgood first issue

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Description

Motivation

reduce_metrics seems to be used for reducing metrics across DP ranks and batches, which only simply means the values.

However, reducing metrics across DP ranks is non-trivial since some metrics like "mean" are not linear.

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