centos7 nvidia-smi命令很慢

nvidia-smi命令很慢，长时间才有输出

sudo /usr/bin/nvidia-persistenced --verbose

设置开机自启动

$ chmod +x /etc/init.d/rc.local
$ vim /etc/init.d/rc.local
# 添加下面一行保存退出
/usr/bin/nvidia-persistenced --verbose