code: def test_simple():
      create_and_validate(600, 76)
  
file_path: ffcv/tests/test_memory_allocation.py
imports: import numpy
  from assertpy import assert_that
  from torch.utils.data import Dataset
  import logging
  import os
  from assertpy import assert_that
  from tempfile import NamedTemporaryFile
  from ffcv.writer import DatasetWriter
  from ffcv.reader import Reader
  from ffcv.fields import BytesField, IntField
label_desc: Use image node_id 2 for calling a global function with example usage: test_simple() without return types