[OMPI users] MPI_Comm_spawn and exit of parent process.

Hi, I would like to start a single process without mpirun and then use MPI_Comm_spawn to start up as many processes as required. I don't want the parent process to take up any resources, so I tried to disconnect the inter communicator and then finalize mpi and exit the parent. But as soon as I do

[OMPI users] ptmalloc2 problem with ICC 12.1 and OpenMPI 1.6.1

Hi, my application crashes with /shared/openmpi-1.6.1/intel/lib/libmpi.so.1(opal_memory_ptmalloc2_int_malloc+0x4b3)[0x7fbef40e1413] /shared/openmpi-1.6.1/intel/lib/libmpi.so.1(opal_memory_ptmalloc2_int_memalign+0x8b)[0x7fbef40e494b] /shared/openmpi-1.6.1/intel/lib/libmpi.so.1(opal_memory_ptmalloc2

[OMPI users] MPI_THREAD_FUNNELED and enable-mpi-thread-multiple

Hi, compiling 1.6.1 or 1.6.2 without enable-mpi-thread-multiple returns from MPI_Init_thread as provided level MPI_THREAD_SINGLE. Is enable-mpi-thread-multiple required even for MPI_THREAD_FUNNELED/MPI_THREAD_SERIALIZED? This question has been asked before: http://www.open-mpi.org/community/lists

Re: [OMPI users] MPI_THREAD_FUNNELED and enable-mpi-thread-multiple

the OPAL and ORTE layers.", but that is not very useful for a user. Also why is it not enabled by default? Roland > > Brian > > On Tue, Jan 22, 2013 at 12:56 PM, Roland Schulz wrote: > > Hi, > > > > compiling 1.6.1 or 1.6.2 without enable-mpi-thread-

[OMPI users] Setting MCA parameter from within program

Hi all, is it possible to set MCA parameters from within the MPI program itself? The FAQ only mentions how to set them through files or environment variables. I would like to set coll_tuned_use_dynamic_rules and coll_tuned_alltoall_algorithm. I assume there is a function to do this in include/o