about distributed.launch

[REFRAING]

when I use distributed.launch, the following message appears and is stuck,how can I deal this problem, thanks:
WARNING:torch.distributed.run:

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Setting OMP_NUM_THREADS environment variable for each process to be 1 in default, to avoid your system being overloaded, please further tune the variable for optimal performance in your application as needed.

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[hlh2001]

I met the same problem, have you solved the problem? If so, please give me some advice, thanks.