class_docstr: Track a series of values and provide access to smoothed values over a
  window or the global series average.
docstr: Warning: does not synchronize the deque!
docstr_tok: ["Warning",":","does","not","synchronize","the","deque","!"]
code: def synchronize_between_processes(self):
      """
      Warning: does not synchronize the deque!
      """
      t = reduce_across_processes([self.count, self.total])
      t = t.tolist()
      self.count = int(t[0])
      self.total = t[1]
  
imports: import datetime
  import time
  from collections import defaultdict, deque
  import torch
  from .distributed import reduce_across_processes
label_desc: Use image node_id 3 for calling the SmoothedValue obj's underlying member method code with example usage: obj.synchronize_between_processes() without return types