code: def add_compare_with_cpu_command(subparsers):
      # Compare with CPU
      subparser = subparsers.add_parser(
          "compare_with_cpu",
          help="Compare performance between two nntxt.",
      )
      subparser.add_argument(
          "-c", "--config", help="path to nntxt", required=True
      )
      subparser.add_argument(
          "-c2", "--config2", help="path to cpu nntxt", required=True
      )
      subparser.add_argument(
          "-o", "--outdir", help="output directory", required=True
      )
      subparser.set_defaults(func=compare_with_cpu_command)
  
file_path: nnabla/python/src/nnabla/utils/cli/compare_with_cpu.py
imports: import os
  from collections import OrderedDict
  import nnabla
  import nnabla.utils.load
  import numpy
  from contextlib2 import ExitStack
  from nnabla.logger import logger
  from nnabla.parameter import get_parameters
  from nnabla.utils.cli.utility import let_data_to_variable
  from nnabla.utils.progress import configure_progress, progress
label_desc: Use image node_id 5 for calling a global function with example usage: add_compare_with_cpu_command(subparsers) without return types