This might be the alignment bug. http://lists.mpich.org/pipermail/discuss/2016-May/004764.html You can try the trivial patch yourself to find out. It was already addressed in head; there were comments that a patched version might be cut... - Eric On Fri, Aug 19, 2016 at 11:43 AM, Dmitriy Morozov <[email protected]> wrote:
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 [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss
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