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Implement gradient pre-normalization in LAMB optimizer #415

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jglaser wants to merge 1 commit into jettify:master from jglaser:prenormalization

jglaser commented Jan 15, 2022

This PR implements the normalization of gradients (by the norm of all gradients in the model) as discussed in https://developer.nvidia.com/blog/pretraining-bert-with-layer-wise-adaptive-learning-rates/

Adding the prenorm Boolean option to torch_optimizer.lamb


          add gradient prenormalization

8295d1d

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