Created by: maosengshulei

   1）PaddlePaddle版本：paddle-fluid-v1.3.0    2）使用cpu    4）系统环境：请您描述系统类型、版本，例如Mac OS 10.14，Python版本

• 训练信息    1）mpi多级训练，启用pserver    复现信息：job-id：job-0bb5cf2cc9b8a180； job-0bb5cf2c4aedcb60
• 问题描述： 两次出core 第一次： getRPC name:[DenseFeatFactors], ep:[10.76.128.38:62004], status:[-1] meets grpc error, error_code:14 error_message:Socket closed error_details: *** Check failure stack trace: *** @ 0x7fae35c6ec0d google::LogMessage::Fail() @ 0x7fae35c726bc google::LogMessage::SendToLog() @ 0x7fae35c6e733 google::LogMessage::Flush() @ 0x7fae35c73bce google::LogMessageFatal::~LogMessageFatal() @ 0x7fae3677630a paddle::operators::distributed::GRPCClient::Proceed() @ 0x7fae8c0438a0 execute_native_thread_routine @ 0x7fae92bb21c3 start_thread @ 0x7fae921da12d __clone @ (nil) (unknown)

第二次： GetRPC name:[fc_1.w_0.block6], ep:[10.76.87.28:62004], status:[-1] meets grpc error, error_code:14 error_message:Socket closed error_details:

* Check failure stack trace: *

@ 0x7f4282ecbc0d google::LogMessage::Fail() @ 0x7f4282ecf6bc google::LogMessage::SendToLog() @ 0x7f4282ecb733 google::LogMessage::Flush() @ 0x7f4282ed0bce google::LogMessageFatal::~LogMessageFatal() @ 0x7f42839d330a paddle::operators::distributed::GRPCClient::Proceed() @ 0x7f42da1318a0 execute_native_thread_routine @ 0x7f42e0ca01c3 start_thread @ 0x7f42e02c812d __clone @ (nil) (unknown)