Solved by vfdev-5 in post #4 
              
              
                Here is how to launch the code on Jupyter. 
import os
os.environ["CUDA_VISIBLE_DEVICES"] = ""

import time
import ignite.distributed as idist

def training(local_rank, config, **kwargs):
    time.sleep(local_rank)
    print(idist.get_rank(), ': run with config:', config, '- backend=', idist.backend(…