def METHOD_NAME(pool_params):
    args, tid, ctxt = pool_params
    handle = ctxt['handle']
    start_time = time.time()
    ret = handle.pread(ctxt['buffer'], ctxt['file'], args.validate, True)
    assert ret != -1
    handle.wait()
    end_time = time.time()
    ctxt['elapsed_sec'] += end_time - start_time
    return ctxt