Optimize communicator flags#17494

Merged

jacquesqiao merged 2 commits intoPaddlePaddle:developfrom

jacquesqiao:optimize-communicator-flags

May 20, 2019

Commits on May 18, 2019

optimize communicator flag
jacquesqiao
committed

Commits on May 20, 2019

change flags in init py test=develop
jacquesqiao
committed