code: def _use_cpu(x):
      ctr = 0
      while ctr < 1e7:
          ctr += 1
          x * x
  
imports: import os
  import numpy
  import threading
  from time import time
  from ..None import config, logging
label_desc: Use image node_id 6 for calling a global function with example usage: _use_cpu(x) without return types