code: def _get_expert_model_parallel_world_size():
      global expert_tensor_parallel_world_size
      return expert_tensor_parallel_world_size
  
imports: from deepspeed import comm
  from deepspeed.utils import log_dist
  from deepspeed.utils.exceptions import DeprecatedException
label_desc: Use image node_id 26 for calling a global function with example usage: _get_expert_model_parallel_world_size() and returns: expert_tensor_parallel_world_size