Created by: sshilei

Quick Start中 https://github.com/PaddlePaddle/Fleet/tree/develop/examples/quick-start

（1） Collective Training中，执行报错 role = role_maker.PaddleCloudRoleMaker(is_collective=True) fleet.init(role) 报错 File "/home/map/rd/wushilei/code/paddle-frame/baidu/mapsearch/paddle-frame/frame/scheduler/../..//frame/core/gpu_dataset_trainer.py", line 163, in ret = trainer.start(sys.argv) File "/home/map/rd/wushilei/code/paddle-frame/baidu/mapsearch/paddle-frame/frame/scheduler/../..//frame/core/gpu_dataset_trainer.py", line 151, in start self.set_optimizer(FLAGS, net_output) File "/home/map/rd/wushilei/code/paddle-frame/baidu/mapsearch/paddle-frame/frame/scheduler/../..//frame/core/gpu_dataset_trainer.py", line 119, in set_optimizer role = role_maker.PaddleCloudRoleMaker(is_collective=True) TypeError: init() got an unexpected keyword argument 'is_collective'

（2） Parameter Server Training 启动多进程的， paddle.distributed.launch_ps 对应的 launch_ps在代码里面没有找到，这个是paddlecloud专用的吗？