X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/cd9affe6152d6bbec19a72ea6fe26ab9407b51b7..fff5fbf696a8eaf8a7f230c4e15c763db690bcc3:/teshsuite/smpi/isp/umpire/irecv-deadlock.c

diff --git a/teshsuite/smpi/isp/umpire/irecv-deadlock.c b/teshsuite/smpi/isp/umpire/irecv-deadlock.c
new file mode 100644
index 0000000000..c1a16fe059
--- /dev/null
+++ b/teshsuite/smpi/isp/umpire/irecv-deadlock.c
@@ -0,0 +1,52 @@
+/* -*- Mode: C; -*- */
+/* Creator: Bronis R. de Supinski (bronis@llnl.gov) Fri Mar  17 2000 */
+/* no-error.c -- do some MPI calls without any errors */
+
+#include <stdio.h>
+#include "mpi.h"
+
+#define buf_size 128
+
+int
+main (int argc, char **argv)
+{
+  int nprocs = -1;
+  int rank = -1;
+  char processor_name[128];
+  int namelen = 128;
+  int buf0[buf_size];
+  int buf1[buf_size];
+  MPI_Status status;
+  MPI_Request req;
+
+  /* init */
+  MPI_Init (&argc, &argv);
+  MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
+  MPI_Comm_rank (MPI_COMM_WORLD, &rank);
+  MPI_Get_processor_name (processor_name, &namelen);
+  printf ("(%d) is alive on %s\n", rank, processor_name);
+  fflush (stdout);
+
+  MPI_Barrier (MPI_COMM_WORLD);
+
+  if (nprocs < 2)
+    {
+      printf ("not enough tasks\n");
+    }
+  else
+    {
+      int dest = (rank == nprocs - 1) ? (0) : (rank + 1);
+      int src = (rank == 0) ? (nprocs - 1) : (rank - 1);
+      memset (buf0, rank, buf_size);
+      MPI_Irecv (buf0, buf_size, MPI_INT, src, 0, MPI_COMM_WORLD, &req);
+      MPI_Wait(&req,&status);
+      MPI_Send (buf0, buf_size, MPI_INT, dest, 0, MPI_COMM_WORLD);
+    }
+
+  MPI_Barrier (MPI_COMM_WORLD);
+
+  MPI_Finalize ();
+  printf ("(%d) Finished normally\n", rank);
+}
+
+/* EOF */