请问单机两卡（A40）训练stage one ,都需要修改哪些参数呢？

命令行改为python -m torch.distributed.launch --nproc_per_node=2 --master_port=21 train.py -opt options/train/GoPro_S1.yml --launcher pytorch为什么报错啊？
ERROR:torch.distributed.elastic.multiprocessing.api:failed (exitcode: 1) local_rank: 0 (pid: 223240) of binary: /root/anaconda3/envs/hi_diff/bin/python