code: def gather_forward_split_backward(input_, comm_spec):
      return _GatherForwardSplitBackward.apply(input_, comm_spec)
  
imports: from enum import Enum
  from typing import Dict
  import torch
  import torch.distributed
  from torch.distributed import ReduceOp
label_desc: Use image node_id 8 for calling a global function with example usage: gather_forward_split_backward(input_, comm_spec) and returns: _GatherForwardSplitBackward