transformers

5b5e71dc - add dataloader prefetch factor in training args and trainer (#28498)

add dataloader prefetch factor in training args and trainer (#28498) * add dataloader prefetch factor in training args and trainer * remove trailing spaces * prevent dataloader_num_workers == 0 and dataloader_prefetch_factor != None dataloader_prefetch_factor works only when data is loaded in a different process as the main one. This commit adds the necessary checks to avoid having prefetch_factor set when there is no such process. * Remove whitespaces in empty line * Update src/transformers/training_args.py Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com> * Update src/transformers/training_args.py Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com> * Update src/transformers/training_args.py Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com> * Update src/transformers/training_args.py Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com> --------- Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>