The server socket cannot be initialized

[xychen2022]

Hi, I got the following distributed learning related problem when running the code using example data. How to solve it? Thanks

[W socket.cpp:401] [c10d] The server socket cannot be initialized on [::]:6021 (errno: 97 - Address family not supported by protocol).
[W socket.cpp:401] [c10d] The server socket has failed to bind to 0.0.0.0:6021 (errno: 98 - Address already in use).
[E socket.cpp:435] [c10d] The server socket has failed to listen on any local network address.

[onat-dalmaz]

It seems that cpp packages related to distributed learning are not properly installed. Please check
torch.multiprocessing
torch.distributed

and their required packages too.