code: def launch_sweep(sweep_jobs, sync_job, flush_cache_job):
      for perf_job in sweep_jobs:
          if flush_cache_job is not None:
              run_job(sync_job)
              run_job(flush_cache_job)
  
          run_job(perf_job)
  
          run_job(sync_job)
  
imports: import os
  import sys
  import argparse
  import json
  import itertools
  import subprocess
  import shutil
  from test_ds_aio_utils import refine_integer_value
  from perf_sweep_utils import READ_OP_DESC, WRITE_OP_DESC, BENCH_LOG_DIR, READ_IO_DIR, WRITE_IO_DIR, READ_LOG_DIR, WRITE_LOG_DIR
  from deepspeed.ops.op_builder import AsyncIOBuilder
label_desc: Use image node_id 6 for calling a global function with example usage: launch_sweep(sweep_jobs, sync_job, flush_cache_job) without return types