code: def test_ensure(n):
      _run_distributed("_test_ensure", n, dict(), script=__file__)
  
file_path: fastmoe/tests/test_comm.py
imports: import pytest
  import os
  import sys
  import json
  import math
  import torch
  import torch.distributed
  import torch.nn.functional
  from fmoe.functions import ensure_comm
  from test_ddp import _ensure_initialized, _run_distributed
label_desc: Use image node_id 1 for calling a global function with example usage: test_ensure(n) without return types