code: def _warmup_mmap_file(path):
      with open(path, "rb") as stream:
          while stream.read(100 * 1024 * 1024):
              pass
  
imports: import os
  import shutil
  import struct
  from functools import lru_cache
  from itertools import accumulate
  import numpy
  import torch
label_desc: Use image node_id 13 for calling a global function with example usage: _warmup_mmap_file(path) without return types