class_docstr: Pass the input to the model parallel region.
  
  Args:
      input_: input matrix.
      process_group: parallel mode.
class_docstr_tok: ["Pass","the","input","to","the","model","parallel","region",".","Args",":","input_",":","input","matrix",".","process_group",":","parallel","mode","."]
code: def symbolic(graph, input_):
      return input_
  
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 1 for calling the _ReduceGrad obj's underlying member method code with example usage: obj.symbolic(graph, input_) and returns: input_