[core] Add max_grad_norm support
#177
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younesbelkada
commented
Feb 27, 2023
lvwerra
approved these changes
Feb 28, 2023
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What does this PR do?
This PR adds the support of clipping gradients norm, that was not supported before but implemented in other frameworks such as clean RL: https://github.com/vwxyzjn/cleanrl/blob/2e41da2a3649c50f27121d74896110fe8f69dd52/cleanrl/ppo.py#L286
This PR also adds a nice test
I can confirm multi-GPU training works with this PR (ran 1 PPO step of
gpt2-sentimentwith 2 GPU)cc @edbeeching @lvwerra @natolambert