[mpich-commits] [mpich] MPICH primary repository branch, master, updated. v3.1.2-92-gf8bd87e

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- Log -----------------------------------------------------------------
http://git.mpich.org/mpich.git/commitdiff/f8bd87eb68621ecca31f07042f7e3548766d75a8

commit f8bd87eb68621ecca31f07042f7e3548766d75a8
Author: Min Si <msi at il.is.s.u-tokyo.ac.jp>
Date:   Sat Aug 9 18:58:58 2014 -0500

    Add process number check for SHM communicator.
    
    Some platforms do not support shared memory, they will
    create a SHM communicator which essentially equals to
    comm_self. This test should not be executed on such platforms.
    Thus we check the number of processes in SHM communicator
    and exit if only one process exists.
    
    Signed-off-by: Xin Zhao <xinzhao3 at illinois.edu>
    Signed-off-by: Antonio J. Pena <apenya at mcs.anl.gov>

diff --git a/test/mpi/rma/win_shared_zerobyte.c b/test/mpi/rma/win_shared_zerobyte.c
index 1f602a7..4bec8e5 100644
--- a/test/mpi/rma/win_shared_zerobyte.c
+++ b/test/mpi/rma/win_shared_zerobyte.c
@@ -35,6 +35,11 @@ int main(int argc, char **argv)
     MPI_Comm_rank(shm_comm, &shm_rank);
     MPI_Comm_size(shm_comm, &shm_nproc);
 
+    /* Platform does not support shared memory, just return. */
+    if (shm_nproc < 2) {
+        goto exit;
+    }
+
     bases = calloc(shm_nproc, sizeof(int *));
 
     if (shm_rank == 0 || shm_rank == shm_nproc - 1) {
@@ -95,12 +100,15 @@ int main(int argc, char **argv)
 
     MPI_Reduce(&errors, &all_errors, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);
 
+  exit:
+
     if (rank == 0 && all_errors == 0)
         printf(" No Errors\n");
 
     MPI_Finalize();
 
-    free(bases);
+    if (bases)
+        free(bases);
 
     return 0;
 }

-----------------------------------------------------------------------

Summary of changes:
 test/mpi/rma/win_shared_zerobyte.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)


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