[mpich-discuss] Segfault in MPI_Comm_split on OS X (MPICH 3.2)

[Dmitriy Morozov]

When I compile and run the following code on my mac (running OS X
10.11.6, El Capitan), with MPICH 3.2 built from source (via Homebrew),
I get a segfault in MPI_Comm_split. If I do the same with a recent
clone from the git repository (specifically, d8bb1df), everything
works fine. I'm wondering if this is a known problem in 3.2.

Thanks.
Dmitriy

// test-mpi.c

#include <mpi.h>

int main(int argc, char** argv)
{
    MPI_Init(&argc, &argv);

    MPI_Comm world = MPI_COMM_WORLD;

    int rank;
    MPI_Comm_rank(world, &rank);

    MPI_Comm local;
    MPI_Comm_split(world, rank, 0, &local);

    MPI_Finalize();
}

mpicc test-mpi.c -o test-mpi
mpirun -n 2 ./test-mpi
_______________________________________________
discuss mailing list     discuss at mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss