code: def kill_ddp_processes() -> None:
      """
      Killing all DDP processes from a single process.
      Firstly kills all children of a single DDP process (dataloader workers)
      Then kills all other DDP processes
      Then kills main parent DDP process
      """
  
      pid = os.getpid()
      parent_pid = os.getppid()
  
      current_process = psutil.Process(pid)
      children = current_process.children(recursive=True)
      for child in children:
          child.kill()
  
      parent_process = psutil.Process(parent_pid)
      children = parent_process.children(recursive=True)[::-1]
      for child in children:
          if child.pid == pid:
              continue
          child.kill()
      parent_process.kill()
      current_process.kill()
  
imports: import logging
  import os
  import pickle
  import random
  import zipfile
  from typing import Any
  import numpy
  import openai
  import psutil
  import torch
label_desc: Use image node_id 4 for calling a global function with example usage: kill_ddp_processes() without return types