- MPI test program

1 files changed, 36 insertions, 0 deletions

diff --git a/src/testbed/gnunet_mpi_test.c b/src/testbed/gnunet_mpi_test.c
new file mode 100644
index 000000000..26e6fdac1
--- /dev/null
+++ b/src/testbed/gnunet_mpi_test.c
@@ -0,0 +1,36 @@
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include <mpi.h>
+
+int main (int argc, char *argv[])
+{
+  char *msg;
+  char *filename;
+  pid_t pid;
+  int ntasks;
+  int rank;
+  int msg_size;
+  int ret;
+
+  ret = GNUNET_SYSERR;
+  if (MPI_SUCCESS != MPI_Init (&argc, &argv))
+    return 1;
+  if (MPI_SUCCESS != MPI_Comm_size (MPI_COMM_WORLD, &ntasks))
+    goto finalize;
+  if (MPI_SUCCESS != MPI_Comm_rank (MPI_COMM_WORLD, &rank))
+    goto finalize;
+  (void) GNUNET_asprintf (&filename, "%d.mpiout", rank);
+  msg_size = GNUNET_asprintf (&msg, "My rank is: %d\n", rank);
+  if (msg_size == GNUNET_DISK_fn_write (filename,
+                                        msg, msg_size,
+                                        GNUNET_DISK_PERM_USER_READ
+                                        | GNUNET_DISK_PERM_GROUP_READ
+                                        | GNUNET_DISK_PERM_USER_WRITE
+                                        | GNUNET_DISK_PERM_GROUP_WRITE))
+    ret = GNUNET_OK;
+  GNUNET_free (filename);
+  GNUNET_free (msg);
+ finalize:
+  (void) MPI_Finalize ();
+  return (GNUNET_OK == ret) ? 0 : 1;
+}