Traceback (most recent call last):
File “/snap/pycharm-professional/121/helpers/pydev/pydevd.py”, line 1741, in 
main()
File “/snap/pycharm-professional/121/helpers/pydev/pydevd.py”, line 1735, in main
globals = debugger.run(setup[‘file’], None, None, is_module)
File “/snap/pycharm-professional/121/helpers/pydev/pydevd.py”, line 1135, in run
pydev_imports.execfile(file, globals, locals)  # execute the script
File “/snap/pycharm-professional/121/helpers/pydev/_pydev_imps/_pydev_execfile.py”, line 18, in execfile
exec(compile(contents+"\n", file, ‘exec’), glob, loc)
File “/home/wen/PycharmProjects/Attention-Echino/train.py”, line 217, in 
main()
File “/home/wen/PycharmProjects/Attention-Echino/train.py”, line 59, in main
dist.init_process_group(backend=args.dist_backend, init_method=args.dist_url, world_size=args.world_size)
File “/home/wen/anaconda3/lib/python3.6/site-packages/torch/distributed/init.py”, line 94, in init_process_group
group_name, rank)
RuntimeError: Permission denied at /pytorch/torch/lib/THD/process_group/General.cpp:17