code: def test_idist_parallel_no_dist():
      device = idist.device()
      with idist.Parallel(backend=None) as parallel:
          parallel.run(
              _test_func,
              ws=1,
              device=device,
              backend=None,
              true_init_method=None,
          )
  
imports: import os
  import subprocess
  import sys
  from pathlib import Path
  import pytest
  import torch
  from packaging.version import Version
  import ignite.distributed
  from ignite.distributed.utils import has_hvd_support, has_native_dist_support, has_xla_support
label_desc: Use image node_id 17 for calling a global function with example usage: test_idist_parallel_no_dist() without return types