Created by: ccmeteorljh

多机同步，异步都经常在启动时碰到这个问题，有时设置trainer先sleep 30s也不行

F0829 21:31:20.322667   803 grpc_client.cc:295] Get name:[batch_norm_19.w_0], ep:[10.255.122.14:6174] meets grpc error:OS Error
*** Check failure stack trace: ***
    @     0x7fdfd17fafed  google::LogMessage::Fail()
    @     0x7fdfd17fea9c  google::LogMessage::SendToLog()
    @     0x7fdfd17fab13  google::LogMessage::Flush()
    @     0x7fdfd17fffae  google::LogMessageFatal::~LogMessageFatal()
    @     0x7fdfd2696e38  paddle::operators::distributed::GRPCClient::Proceed()
    @     0x7fe02526b470  (unknown)
    @     0x7fe0301a8851  start_thread
    @     0x7fe02f86b90d  clone
    @              (nil)  (unknown)
*********************error messages********************