Add eval_start_step flag and allow evaluation from step 0 - #4547

Add eval_start_step flag and allow evaluation from step 0#4547

copybara-service[bot] merged 1 commit into

mainAI-Hypercomputer/maxtext:mainfrom

zxhe/eval_start_stepAI-Hypercomputer/maxtext:zxhe/eval_start_stepCopy head branch name to clipboard