错误：

RuntimeError: The server socket has failed to listen on any local network address. The server socket has failed to bind to [::]:16664 (errno: 98 - Address already in use). The server socket has failed to bind to 0.0.0.0:16664 (errno: 98 - Address already in use).

原因：训练的时候，已经有一张卡在执行训练，第二张卡执行训练任务时，使用了同一个端口

解决办法：修改第二张卡的端口号，与第一张卡使用的端口号不重复即可

参考文章：

【debug】mmseg多级多卡训练报错：The server socket has failed to listen on any local network address._zy_destiny的博客-CSDN博客