FusedAdam as a drop-in replacement for AdamW #1615
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The idea is to move "steps" from param_groups to state as it's done for AdamW.
We add a test in order to make sure that the
state_dictcorrespond. (There are still some inconsistencies, where tensors might not be in the correct device, or be a tensor at all).PS: I'm fairly new to cuda kernels, so I was trying to fix this, let me know if I'm doing something wrong. Thanks