code: def initializer(shape, dtype):
      """Sparse optimizer state initializer
  
      Parameters
      ----------
      shape : tuple of ints
          The shape of the state tensor
      dtype : torch dtype
          The data type of the state tensor
      """
      arr = th.zeros(shape, dtype=dtype)
      return arr
  
imports: import abc
  import warnings
  from abc import abstractmethod
  from os.path import exists
  import torch
  import dgl
  from ....None import backend
  from ...dist_tensor import DistTensor
  from ...graph_partition_book import EDGE_PART_POLICY, NODE_PART_POLICY
  from ...nn.pytorch import DistEmbedding
  from .utils import alltoall, alltoallv
label_desc: Use image node_id 1 for calling a global function with example usage: initializer(shape, dtype) and returns: arr