See slide 22 of http://www.open-mpi.org/papers/sc-2013/Open-MPI-SC13-BOF.pdf
Jeff On Wed, Nov 27, 2013 at 8:59 AM, Ralph Castain <rhc.open...@gmail.com> wrote: > Openib does not currently support thread multiple - hopefully in 1.9 series > > Sent from my iPhone > > On Nov 27, 2013, at 7:14 AM, Daniel Cámpora <dcamp...@cern.ch> wrote: > > Dear list, > > I've gone through several hours of configuring and testing to get a grasp of > the current status for multi-threading support. > > I want to use a program with MPI_THREAD_MULTIPLE, over the openib BTL. I'm > using openmpi-1.6.5 and SLC6 (rhel6), for what's worth. > > Upon configuring my own openmpi library, if I just > --enable-mpi-thread-multiple, and execute my program with -mca btl openib, > it simply crashes upon openib not supporting MPI_THREAD_MULTIPLE. > > I've only started testing with --enable-opal-multi-threads, just in case it > would help me. Configuring with the aforementioned options, > ./configure --enable-mpi-thread-multiple --enable-opal-multi-threads > > results in a crash whenever executing my program, > > $ mpirun -np 2 -mca mca_component_path > /usr/mpi/gcc/openmpi-1.6.5/lib64/openmpi -mca btl openib -mca > btl_openib_warn_default_gid_prefix 0 -mca btl_base_verbose 100 -mca > btl_openib_verbose 100 -machinefile machinefile.labs `pwd`/em_bu_app 2>&1 | > less > -------------------------------------------------------------------------- > It looks like opal_init failed for some reason; your parallel process is > likely to abort. There are many reasons that a parallel process can > fail during opal_init; some of which are due to configuration or > environment problems. This failure appears to be an internal failure; > here's some additional information (which may only be relevant to an > Open MPI developer): > > opal_shmem_base_select failed > --> Returned value -1 instead of OPAL_SUCCESS > -------------------------------------------------------------------------- > [lab14:13672] [[INVALID],INVALID] ORTE_ERROR_LOG: Error in file > runtime/orte_init.c at line 79 > [lab14:13672] [[INVALID],INVALID] ORTE_ERROR_LOG: Error in file orterun.c at > line 694 > > > Several questions related to these. Does --enable-opal-multi-threads have > any impact on the BTL multi-threading support? (If there's more > documentation on what this does I'd be glad to read it). > > Is there any additional configuration tag necessary for enabling > opal-multi-threads to work? > > Cheers, thanks a lot! > > Daniel > > -- > Daniel Hugo Cámpora Pérez > European Organization for Nuclear Research (CERN) > PH LBC, LHCb Online Fellow > e-mail. dcamp...@cern.ch > > _______________________________________________ > 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 -- Jeff Hammond jeff.scie...@gmail.com
