code: def split_forward_gather_backward(input_, process_group, dim):
      return _SplitForwardGatherBackward.apply(
          input_, process_group, dim
      )
  
imports: from typing import List, Optional, Union
  import torch
  import torch.distributed
  from colossalai.legacy.global_variables import tensor_parallel_env
  from colossalai.legacy.nn.layer.utils import divide
  from colossalai.legacy.tensor import ColoTensorSpec, ProcessGroup
  from colossalai.tensor import ColoTensor
label_desc: Use image node_id 11 for calling a global function with example usage: split_forward_gather_backward(input_, process_group, dim) and returns: _SplitForwardGatherBackward