add mpich3 topo tests

[simgrid.git] / teshsuite / smpi / mpich3-test / topo / cartcreates.c

diff --git a/teshsuite/smpi/mpich3-test/topo/cartcreates.c b/teshsuite/smpi/mpich3-test/topo/cartcreates.c
new file mode 100644 (file)
index 0000000..92365d7
--- /dev/null
+++ b/teshsuite/smpi/mpich3-test/topo/cartcreates.c
@@ -0,0 +1,54 @@
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ *
+ *  (C) 2003 by Argonne National Laboratory.
+ *      See COPYRIGHT in top-level directory.
+ */
+#include "mpi.h"
+#include <stdio.h>
+#include "mpitest.h"
+
+int main( int argc, char *argv[] )
+{
+    int errs = 0;
+    int size, rank;
+    int dims[2], periods[2];
+    MPI_Comm comm;
+
+    MTest_Init( &argc, &argv );
+
+    /* Create a new cartesian communicator in a subset of the processes */
+    MPI_Comm_size( MPI_COMM_WORLD, &size );
+    MPI_Comm_rank( MPI_COMM_WORLD, &rank );
+    if (size < 2) {
+       fprintf( stderr, "This test needs at least 2 processes\n" );
+       MPI_Abort( MPI_COMM_WORLD, 1 );
+    }
+    dims[0]    = size-1;
+    periods[0] = 1;
+    MPI_Cart_create( MPI_COMM_WORLD, 1, dims, periods, 0, &comm );
+
+    if (comm != MPI_COMM_NULL) {
+       int csize;
+       MPI_Comm_size( comm, &csize );
+       if (csize != dims[0]) {
+           errs++;
+           fprintf( stderr, 
+            "Sizes is wrong in cart communicator.  Is %d, should be %d\n", 
+            csize, dims[0] ); 
+       }
+       MPI_Barrier( comm );
+
+       MPI_Comm_free( &comm );
+    } 
+    else if (rank < dims[0]) {
+       errs++;
+       fprintf( stderr, "Communicator returned is null!" );
+    }
+
+    MTest_Finalize( errs );
+
+    MPI_Finalize();
+
+    return 0;
+}