报错如下：

run_singlenode.sh: line 58: ulimit: max user processes: cannot modify limit: Operation not permitted

start training for rank 0, device 0

start training for rank 1, device 1

start training for rank 2, device 2

start training for rank 3, device 3

start training for rank 4, device 4

start training for rank 5, device 5

start training for rank 6, device 6

start training for rank 7, device 7