message: Link to the bug where we change the inter_op pool size in in-process cluster.
diff: @@ -164,7 +164,8 @@ def create_in_process_cluster(num_workers,
  worker_config = config_pb2.ConfigProto()
  worker_config.gpu_options.per_process_gpu_memory_fraction = gpu_mem_frac
  - # The cluster may hang if workers don't have enough inter_op threads.
  + # The cluster may hang if workers don't have enough inter_op threads. See
  + # b/172296720 for more details.
  if multiprocessing.cpu_count() < 4:
  worker_config.inter_op_parallelism_threads = 4
  