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

diff --git a/teshsuite/smpi/isp/umpire/basic-deadlock-cart_create.c b/teshsuite/smpi/isp/umpire/basic-deadlock-cart_create.c
new file mode 100644
index 0000000000..145f900cdb
--- /dev/null
+++ b/teshsuite/smpi/isp/umpire/basic-deadlock-cart_create.c
@@ -0,0 +1,86 @@
+/* -*- 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
+
+#define TWOD     2
+
+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_Comm comm;
+  MPI_Group world_group, dgroup;
+  int *granks;
+  int dims[TWOD], periods[TWOD];
+  int drank, dnprocs;
+
+  /* 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 < 4) {
+    printf ("not enough tasks\n");
+  }
+  else {
+    /* create a 2 X nprocs/2 torus topology, allow reordering */
+    dims[0] = 2;
+    dims[1] = nprocs/2;
+    periods[0] = periods[1] = 1;
+    MPI_Cart_create (MPI_COMM_WORLD, TWOD, dims, periods, 1, &comm);
+
+    if (comm != MPI_COMM_NULL) {
+      MPI_Comm_size (comm, &dnprocs);
+      MPI_Comm_rank (comm, &drank);
+
+      if (dnprocs > 1) {
+	if (drank == 0) {
+	  memset (buf0, 0, buf_size);
+
+	  MPI_Recv (buf1, buf_size, MPI_INT, 1, 0, comm, &status);
+	
+	  MPI_Send (buf0, buf_size, MPI_INT, 1, 0, comm);
+	}
+	else if (drank == 1) {
+	  memset (buf1, 1, buf_size);
+
+	  MPI_Recv (buf0, buf_size, MPI_INT, 0, 0, comm, &status);
+
+	  MPI_Send (buf1, buf_size, MPI_INT, 0, 0, comm);
+	}
+      }
+      else {
+	printf ("(%d) Derived communicator too small (size = %d)\n",
+		rank, dnprocs);
+      }
+
+      MPI_Comm_free (&comm);
+    }
+    else {
+      printf ("(%d) Got MPI_COMM_NULL\n", rank);
+    }
+  }
+
+  MPI_Barrier (MPI_COMM_WORLD);
+
+  MPI_Finalize ();
+  printf ("(%d) Finished normally\n", rank);
+}
+
+/* EOF */