cnncv.o75102

Traceback (most recent call last):
  File "cnn_cv.py", line 34, in <module>
    torch.distributed.init_process_group(backend='nccl', init_method='env://')
  File "/home/h_ghazik/python_venv/lib/python3.7/site-packages/torch/distributed/distributed_c10d.py", line 754, in init_process_group
    store, rank, world_size = next(rendezvous_iterator)
  File "/home/h_ghazik/python_venv/lib/python3.7/site-packages/torch/distributed/rendezvous.py", line 236, in _env_rendezvous_handler
    rank = int(_get_env_or_raise("RANK"))
  File "/home/h_ghazik/python_venv/lib/python3.7/site-packages/torch/distributed/rendezvous.py", line 221, in _get_env_or_raise
    raise _env_error(env_var)
ValueError: Error initializing torch.distributed using env:// rendezvous: environment variable RANK expected, but not set