Torch.distributed Initialization Error: Missing RANK Environment Variable

This traceback indicates an error in initializing the torch.distributed module in a Python script. \n\nThe error occurs in the file example_text_completion.py at line 55, where the fire.Fire(main) function is called. This function is part of the fire library, which is used to automatically generate command-line interfaces.\n\nThe error message suggests that the script is trying to initialize the distributed process group using the "nccl" backend, but the required environment variable RANK is missing. The RANK environment variable is used to identify the rank of the current process in the distributed training setup.\n\nTo resolve this issue, you need to ensure that the RANK environment variable is set before running the script. This variable should be set to a unique number for each process participating in the distributed training.\n\nMake sure to set the RANK environment variable correctly and rerun the script.