mpirun -np 2 -H 192.168.31.7:1,192.168.31.5:1 -bind-to none -map-by slot -x NCCL_DEBUG=INFO -mca pml ob1 -mca btl ^openib -x NCCL_SOCKET_IFNAME=^lo,docker0,wlo1 -mca btl_tcp_if_exclude lo,docker0,wlo1 run.sh