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.


Regards,
Shiqing


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
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