code: def rpc_run(args, master_func):
      world_size = args.world_size
      assert (
          args.num_microbatches >= args.world_size
      ), "num_microbatches cannot be fewer than world_size!"
      mp.spawn(run_worker, args=(args, master_func), nprocs=world_size)
  
imports: import argparse
  import os
  import warnings
  import torch
  import torch.distributed.rpc
  import torch.multiprocessing
  from torch import nn
  from torch._C._distributed_rpc import _is_current_rpc_agent_set
  from colossalai.legacy import launch
  from colossalai.legacy.pipeline.pipeline_process_group import ppg
  from colossalai.logging import disable_existing_loggers
label_desc: Use image node_id 5 for calling a global function with example usage: rpc_run(args, master_func) without return types