have allreduce test work on much larger arrays to trigger segmentation in one algorithm

[simgrid.git] / teshsuite / smpi / allreduce_coll.c

diff --git a/teshsuite/smpi/allreduce_coll.c b/teshsuite/smpi/allreduce_coll.c
index a2c9921..197607d 100644 (file)
--- a/teshsuite/smpi/allreduce_coll.c
+++ b/teshsuite/smpi/allreduce_coll.c
@@ -15,6 +15,8 @@
 #define EXIT_FAILURE 1
 #endif
 
 #define EXIT_FAILURE 1
 #endif
 

+#define MAXLEN  300000
+

 int main(int argc, char *argv[])
 {
   int rank, size;
 int main(int argc, char *argv[])
 {
   int rank, size;


@@ -27,23 +29,23 @@ int main(int argc, char *argv[])
   MPI_Comm_rank(MPI_COMM_WORLD, &rank);
   MPI_Comm_size(MPI_COMM_WORLD, &size);
 
   MPI_Comm_rank(MPI_COMM_WORLD, &rank);
   MPI_Comm_size(MPI_COMM_WORLD, &size);
 

-  sb = (int *) xbt_malloc(size * sizeof(int));
-  rb = (int *) xbt_malloc(size * sizeof(int));
+  sb = (int *) xbt_malloc(size *MAXLEN * sizeof(int));
+  rb = (int *) xbt_malloc(size *MAXLEN * sizeof(int));

   
   

-  for (i = 0; i < size; ++i) {
+  for (i = 0; i < size *MAXLEN; ++i) {

     sb[i] = rank*size + i;
     rb[i] = 0;
   }
 
   printf("[%d] sndbuf=[", rank);
     sb[i] = rank*size + i;
     rb[i] = 0;
   }
 
   printf("[%d] sndbuf=[", rank);

-  for (i = 0; i < size; i++)
+  for (i = 0; i < size *size; i++)

     printf("%d ", sb[i]);
   printf("]\n");
 
     printf("%d ", sb[i]);
   printf("]\n");
 

-  status = MPI_Allreduce(sb, rb, size, MPI_INT, MPI_SUM, MPI_COMM_WORLD);
+  status = MPI_Allreduce(sb, rb, size *MAXLEN, MPI_INT, MPI_SUM, MPI_COMM_WORLD);

 
   printf("[%d] rcvbuf=[", rank);
 
   printf("[%d] rcvbuf=[", rank);

-  for (i = 0; i < size; i++)
+  for (i = 0; i < size *size; i++)//do not print everything

     printf("%d ", rb[i]);
   printf("]\n");
 
     printf("%d ", rb[i]);
   printf("]\n");