X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8ab9fbef9cd17e59a43126cd5ea214f4190db39e..2591e519da64d744ad34e5ca2de5352eb4206b7b:/teshsuite/bug-17132/bug-17132.c?ds=sidebyside

diff --git a/teshsuite/bug-17132/bug-17132.c b/teshsuite/bug-17132/bug-17132.c
new file mode 100644
index 0000000000..cecb3e4607
--- /dev/null
+++ b/teshsuite/bug-17132/bug-17132.c
@@ -0,0 +1,40 @@
+#include "xbt/log.h"
+#include <stdio.h>
+#include <mpi.h>
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(MM_mpi, "Messages for this SMPI test");
+
+int main(int argc, char ** argv)
+{
+  size_t err;
+  size_t M = 8*1024;
+  size_t N = 32*1024;
+
+  MPI_Init(&argc, &argv);
+
+  double *a = malloc(sizeof(double) * M);
+  double *b = malloc(sizeof(double) * N);
+
+  // A broadcast
+  err = MPI_Bcast(a, M, MPI_DOUBLE, 0, MPI_COMM_WORLD);
+  if (err != MPI_SUCCESS) {
+    perror("Error Bcast A\n"); MPI_Finalize(); exit(-1);
+  }
+
+//  Uncommenting this barrier fixes it!
+//  MPI_Barrier(MPI_COMM_WORLD);
+
+  // Another broadcast
+  err = MPI_Bcast(b, N, MPI_DOUBLE, 0, MPI_COMM_WORLD );
+  if (err != MPI_SUCCESS) {
+    perror("Error Bcast B\n"); MPI_Finalize(); exit(-1);
+  }
+
+  // Commenting out this barrier fixes it!!
+  MPI_Barrier(MPI_COMM_WORLD);
+
+  MPI_Finalize();
+  free(a);
+  free(b);
+  return 0;
+}