question: UserWarning: cleaning up ddp environment...
context: When I execute some program in PyTorch-Lightning, it implements very fast. But, at the last part, I got a message as below
  /home/mydirectory/anaconda3/lib/python3.7/site-packages/pytorch_lightning/utilities/distributed.py:69: UserWarning: cleaning up ddp environment...
  
  warnings.warn(*args, **kwargs)
  
  After this message, all the system stops. I can't see the result that I want stopped by this message.
  Can anyone tell me how to solve it? I'm in Hurry ㅠ.ㅠ
  (I am using it with wandb & HuggingFace.)
answer: @data-weirdo mind share some sample code to reproduce? I have been using DDP in some of our examples and all is fine 🐰