X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/b9486fe3a4234dbd140b0a794c84fb2fd425ec3c..693f30b46244c152cd79cdf3ad35d4a79b866c9c:/examples/msg/pmm/msg_pmm.c

diff --git a/examples/msg/pmm/msg_pmm.c b/examples/msg/pmm/msg_pmm.c
index 26a0b9c4cb..6ff6d1ac7a 100644
--- a/examples/msg/pmm/msg_pmm.c
+++ b/examples/msg/pmm/msg_pmm.c
@@ -8,19 +8,31 @@
 #include "msg/msg.h"
 #include "xbt/matrix.h"
 #include "xbt/log.h"
+
+// #define BENCH_THIS_CODE /* Will only work from within the source tree as we require xbt/xbt_os_time.h, that is not public yet) */
+#ifdef BENCH_THIS_CODE
 #include "xbt/xbt_os_time.h"
+#endif
+
+/** @addtogroup MSG_examples
+ * 
+ * - <b>pmm/msg_pmm.c</b>: Parallel Matrix Multiplication is a little
+ *   application. This is something that most MPI developper have
+ *   written during their class, here implemented using MSG instead
+ *   of MPI. 
+ */
 
 XBT_LOG_NEW_DEFAULT_CATEGORY(msg_pmm,
                              "Messages specific for this msg example");
 
-/* This example should always be executed using a MATRIX_SIZE multiple of
- * GRID_SIZE and with GRID_SIZE^2 nodes. */
-#define MATRIX_SIZE 900
-#define GRID_SIZE 3
+/* This example should always be executed using a deployment of
+ * GRID_SIZE * GRID_SIZE nodes. */
+#define GRID_SIZE 3    /* Modify to adjust the grid's size */
+#define NODE_MATRIX_SIZE 300  /* Ammount of work done by each node*/
 
-#define MAILBOX_NAME_SIZE 10
 #define GRID_NUM_NODES GRID_SIZE * GRID_SIZE
-#define NODE_MATRIX_SIZE MATRIX_SIZE / GRID_SIZE
+#define MATRIX_SIZE NODE_MATRIX_SIZE * GRID_SIZE
+#define MAILBOX_NAME_SIZE 10
 #define NEIGHBOURS_COUNT GRID_SIZE - 1
 
 /*
@@ -58,10 +70,10 @@ int node(int argc, char **argv)
   int k, myid;
   char my_mbox[MAILBOX_NAME_SIZE];
   node_job_t myjob, jobs[GRID_NUM_NODES];
-  xbt_matrix_t A, B, C, sA, sB, sC;
+  xbt_matrix_t A, B, C = NULL, sA, sB, sC;
   result_t result;
 
-  xbt_assert0(argc != 1, "Wrong number of arguments for this node");
+  xbt_assert(argc != 1, "Wrong number of arguments for this node");
 
   /* Initialize the node's data-structures */
   myid = atoi(argv[1]);
@@ -158,7 +170,7 @@ int node(int argc, char **argv)
     result->sC =
       xbt_matrix_new_sub(sC, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE, 0, 0, NULL);
     task = MSG_task_create("result",100,100,result);
-    MSG_task_dsend(task, "0", NULL);
+    MSG_task_dsend(task, "0", (void_f_pvoid_t) MSG_task_destroy);
   }
 
   /* Clean up and finish*/
@@ -244,23 +256,28 @@ static void task_cleanup(void *arg){
  */
 int main(int argc, char *argv[])
 {
+#ifdef BENCH_THIS_CODE
   xbt_os_timer_t timer = xbt_os_timer_new();
+#endif
 
-  MSG_global_init(&argc, argv);
+  MSG_init(&argc, argv);
 
   char **options = &argv[1];
   const char* platform_file = options[0];
   const char* application_file = options[1];
 
-  MSG_set_channel_number(0);
   MSG_create_environment(platform_file);
 
   MSG_function_register("node", node);
   MSG_launch_application(application_file);
 
+#ifdef BENCH_THIS_CODE
   xbt_os_timer_start(timer);
+#endif
   MSG_error_t res = MSG_main();
+#ifdef BENCH_THIS_CODE
   xbt_os_timer_stop(timer);
+#endif
   XBT_CRITICAL("Simulated time: %g", MSG_get_clock());
 
   MSG_clean();