experiments/optim/README.md

Optimizer

2 considerations:

1. AdamW - robust, but memory-hungry
2. Adafactor - more lean, but more difficult to figure out to converge - more likely to be used if the model is t5-like

HF

default AdamW

Deepspeed

default AdamW

Megatron

Has --optimizer adam via apex

To add a new optimizer need to add a new option here and import that new optimizer.