Do you mean that if I need to resume, so I have to uncheck "memory efficient save" and set "Save last N epochs state" to 2 (if I want to keep the last 2 epoch ? (I don't really understand this setting, if I keep 200 epoch, save every 25 epoch and save last 2 epoch, is that mean that every epoch, the state is saved but keeping only 2 last ? or it keep only the epoch number 175 and 200 (state) ?
Also, what is the setting to only keep for example 4 last checkpoints corresponding epoch 125, 150, 175 and 200 ?