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Subject: Re: [OMPI users] Problem with MPI_Comm_accept in a dynamic client/server application
From: Shiqing Fan (fan_at_[hidden])
Date: 2010-10-27 05:52:24

Hi Kalin,

Sorry for the late reply.

I checked the code and got confused. (I'm not and MPI expert) I'm just
wondering how to start the server and client in the same mpirun command
while the client needs a hand-input port name, which is given by the
server at runtime.

I found a similar program on the Internet (see attached), that works
well on my Windows. In this program, the generated port name will be
send among the processes by MPI_Send.


On 2010-10-13 11:09 PM, Kalin Kanov wrote:
> Hi there,
> I am trying to create a client/server application with OpenMPI, which
> has been installed on a Windows machine, by following the instruction
> (with CMake) in the README.WINDOWS file in the OpenMPI distribution
> (version 1.4.2). I have ran other test application that compile file
> under the Visual Studio 2008 Command Prompt. However I get the
> following errors on the server side when accepting a new client that
> is trying to connect:
> [Lazar:02716] [[47880,1],0] ORTE_ERROR_LOG: Not found in file
> ..\..\orte\mca\grp
> comm\base\grpcomm_base_allgather.c at line 222
> [Lazar:02716] [[47880,1],0] ORTE_ERROR_LOG: Not found in file
> ..\..\orte\mca\grp
> comm\basic\grpcomm_basic_module.c at line 530
> [Lazar:02716] [[47880,1],0] ORTE_ERROR_LOG: Not found in file
> ..\..\ompi\mca\dpm
> \orte\dpm_orte.c at line 363
> [Lazar:2716] *** An error occurred in MPI_Comm_accept
> [Lazar:2716] *** on communicator MPI_COMM_WORLD
> [Lazar:2716] *** MPI_ERR_INTERN: internal error
> [Lazar:2716] *** MPI_ERRORS_ARE_FATAL (your MPI job will now abort)
> --------------------------------------------------------------------------
> mpirun has exited due to process rank 0 with PID 476 on
> node Lazar exiting without calling "finalize". This may
> have caused other processes in the application to be
> terminated by signals sent by mpirun (as reported here).
> --------------------------------------------------------------------------
> The server and client code is attached. I have straggled with this
> problem for quite a while, so please let me know what the issue might
> be. I have looked at the archives and the FAQ, and the only thing
> similar that I have found had to do with different version of OpenMPI
> installed, but I only have one version, and I believe it is the one
> being used.
> Thank you,
> Kalin
> _______________________________________________
> users mailing list
> users_at_[hidden]

Shiqing Fan                
High Performance Computing           Tel.: +49 711 685 87234
   Center Stuttgart (HLRS)            Fax.: +49 711 685 65832
Address:Allmandring 30               email: fan_at_[hidden]
70569 Stuttgart