TypeError: Executor requires Program as its Parameter. But you passed in <type 'list'>
Created by: ellinyang
环境：官方docker ：paddlepaddle-gpu==1.8.4.post97
paddledetection：release/0.2
背景：用paddle提供的性能分析工具timeline.py分析各阶段耗时
https://www.paddlepaddle.org.cn/documentation/docs/zh/advanced_guide/performance_improving/analysis_tools/timeline_cn.html
发现每个batch的fetch时间都挺长的
想减少fetch的次数，参考paddle官网案例，但报错了：https://www.paddlepaddle.org.cn/documentation/docs/zh/advanced_guide/performance_improving/multinode_training_improving/dist_training_gpu.html
错误复现：
将 outs = exe.run(compiled_train_prog, fetch_list=train_values)
改为 exe.run([])
试过去掉编译train_prog，也报错了
