code: def ray_start_distributed_2_nodes():
      # The cluster has a setup of 2 nodes.
      # no GPUs!
      ray.init("auto")
      yield
      ray.shutdown()
  
file_path: ray/python/ray/util/collective/tests/conftest.py
imports: import logging
  import pytest
  import ray
  from ray.util.collective.collective_group.nccl_collective_group import _get_comm_key_from_devices, _get_comm_key_send_recv
  from ray.util.collective.const import get_store_name
label_desc: Use image node_id 6 for calling a global function with example usage: ray_start_distributed_2_nodes() without return types