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adafactor optimizer #106

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isamu-isozaki opened this issue Aug 26, 2023 · 1 comment
Open

adafactor optimizer #106

isamu-isozaki opened this issue Aug 26, 2023 · 1 comment

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@isamu-isozaki
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I'm planning to add in adafactor optimizer used in the official implementation. The main benefit of this over adam +adamw is that we don't need 3x the vram but I think a bit above 2x the vram of the models. I currently have the code up https://github.com/isamu-isozaki/adafactor-pytorch and after adding a triton version, I will bring a pr to here!
@isamu-isozaki
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I finished at least the python version! For triton, it seems like multiplying row matrix to column matrix to 16 so a rank of 1 needs some more ideas.

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