class_docstr: Reduce scatter the input from the model parallel region.
class_docstr_tok: ["Reduce","scatter","the","input","from","the","model","parallel","region","."]
code: def symbolic(graph, input_):
      return _reduce_scatter_along_first_dim_moe(input_)
  
imports: import torch
  from megatron.core.parallel_state import get_tensor_and_expert_parallel_group, get_tensor_model_parallel_group, get_tensor_model_parallel_rank, get_tensor_model_parallel_world_size
  from .utils import split_tensor_along_last_dim
label_desc: Use image node_id 1 for calling the _ReduceScatterToSequenceParallelRegionFromMOE obj's underlying member method code with example usage: obj.symbolic(graph, input_) and returns: _reduce_scatter_along_first_dim_moe