Thanks for the information. As there is also a problem with intercommunicator after spawn in 1.6.x I'll turn to another solution.
Valentin Clément On Oct 15, 2012, at 10:41 PM, Ralph Castain <r...@open-mpi.org> wrote: > Yeah, we don't support multi-threaded operations very well at this time. I > think you'd have better success with the 1.7 series as it is released, but > very much doubt the 1.6 series could do this as you describe. > > One way to solve the immediate problem would be to funnel all MPI operations > into a single thread - you can have that thread subsequently parcel out any > messages for handling. You'd have better success with it. > > > On Oct 3, 2012, at 10:36 PM, Valentin Clement <valentin.clem...@riken.jp> > wrote: > >> Hi everyone, >> >> I'm currently implementing communication based on MPI in our parallel >> language middle-ware POP-C++. It was using TCP/IP socket before but due to a >> project to port the language on a supercomputer, I have to use OpenMPI for >> the communication. I successfully change the old communication by MPI >> communication. Anyway I having the following error sometimes during the >> execution of my program. >> >> MPI-COMBOX(client): Want to get a connection to >> 3461939200.0;tcp://172.19.76.219:52876;tcp://172.19.7.128:52876;tcp://172.16.162.1:52876;tcp://192.168.59.1:52876+3461939202.0;tcp://172.19.76.219:52879;tcp://172.19.7.128:52879;tcp://172.16.162.1:52879;tcp://192.168.59.1:52879:300 >> [clementon:58465] [[52825,3],0] ORTE_ERROR_LOG: Data unpack would read past >> end of buffer in file dpm_orte.c at line 315 >> [clementon:58465] *** An error occurred in MPI_Comm_accept >> [clementon:58465] *** on communicator MPI_COMM_WORLD >> [clementon:58465] *** MPI_ERR_UNKNOWN: unknown error >> [clementon:58465] *** MPI_ERRORS_ARE_FATAL: your MPI job will now abort >> >> Sometimes I have to MPI_Comm_connect that failed : >> >> MPI-COMBOX(client): Want to get a connection to >> 1318912000.0;tcp://192.168.59.176:33956+1318912002.0;tcp://192.168.59.176:54394:300 >> [ubuntu:19666] [[20125,3],0] ORTE_ERROR_LOG: Data unpack would read past end >> of buffer in file dpm_orte.c at line 315 >> [ubuntu:19666] *** An error occurred in MPI_Comm_accept >> [ubuntu:19666] *** on communicator MPI_COMM_WORLD >> [ubuntu:19666] *** MPI_ERR_UNKNOWN: unknown error >> [ubuntu:19666] *** MPI_ERRORS_ARE_FATAL: your MPI job will now abort >> >> So basically, I have a process waiting for connection with MPI_Comm_accept >> (Comm.Accept as I used C++). And another process want to connect to it with >> the MPI_Comm_connect (MPI::COMM_WORLD.Connect(port_name) ... ). It works >> fine most of the time. I'm suspecting a problem with multiple threads. The >> process who receives connection as a second thread to serve request. >> >> * The process 1 connects to the process 2 >> * process 2 thread 1 register the request >> * process 2 thread 1 will wait for a new connection >> * process 2 thread 2 will server the pending request and might send data >> * A another process might start again a connection to the process 2 >> >> I'm running this code on an Ubuntu 12.04 with OpenMPI 1.6.2 configured with >> --enable-mpi-thread-multiple. I joined ompi_info -all output. >> I'm running also the same code on a Mac OS X 10.8.2 with OpenMPI 1.6.2 also >> configured with --enable-mpi-thread-multiple. >> >> I don't run on multiple node for the moment. Just one node and already >> experiencing this. As I said I'm suspecting a problem with multiple thread >> but my configuration should allow multiple thread to use MPI calls. >> >> >> >> Any help much appreciated >> >> >> >> Valentin Clement >> >> -- >> Valentin Clement >> Student trainee >> Advanced Institute for Computational Science >> Programming environnement research team >> RIKEN Institute >> Kobe, Japan >> >> >> <ompi-output.tar.bz2> >> >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users ----------------------------------------------------------------------------------------- Valentin Clement - Student trainee at AICS - RIKEN valentin.clem...@hefr.ch valentin.clem...@riken.jp Master thesis project POP-C++ on the K Computer Project homepage: https://forge.tic.eia-fr.ch/projects/poponk Project board: https://forge.tic.eia-fr.ch/projects/poponk/wiki/Wiki -----------------------------------------------------------------------------------------
