docstr: Returns a nested list of peers; the outer-list is indexed by rank,
  the inner list denotes the set of peers that 'rank' can send
  messages to at any point in time
docstr_tok: ["Returns","a","nested","list","of","peers",";","the","outer-list","is","indexed","by","rank",",","the","inner","list","denotes","the","set","of","peers","that","'rank","'","can","send","messages","to","at","any","point","in","time"]
code: def _make_graph(self) -> None:
      """
      Returns a nested list of peers; the outer-list is indexed by rank,
      the inner list denotes the set of peers that 'rank' can send
      messages to at any point in time
      """
      raise NotImplementedError
  
imports: from abc import ABC, abstractmethod
  from math import log
  from typing import List, Optional, Tuple
  import torch
  import torch.distributed
label_desc: Use image node_id 4 for calling the GraphManager obj's underlying member method code with example usage: obj._make_graph() without return types