code: def _get_data_parallel_group():
      """Get the data parallel group the caller rank belongs to."""
      assert dist.is_initialized(), "dist is not initialized"
      global mpu
      if mpu is not None:
          return mpu.get_data_parallel_group()
      # Return the clone of dist world group
      return _clone_world_group()
  
imports: from deepspeed import comm
  from deepspeed.utils import log_dist
  from deepspeed.utils.exceptions import DeprecatedException
label_desc: Use image node_id 15 for calling a global function with example usage: _get_data_parallel_group() and returns: _clone_world_group, mpu