the use of cfg.train.max_batches,and cfg.train.num_samples

[cherry-sing]

the end of the code (multi_gpus_train.py) where we save as ckpt has parameter: cfg.train.max_batches and cfg.train.num_samples.i guess num_samples is the number of our dataset ,right? and still don't understand the usage of max_batches,shall you explain this for me ,thank you very much.