X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/9b62031fae59dfc84cdcda62f6d4e35e1a55a7c5..bda6e0c064e2ebbac5dc3b5f780bb5e6cb61e9b0:/src/surf/network.c

diff --git a/src/surf/network.c b/src/surf/network.c
index 8555a3a6a3..7f207d0d23 100644
--- a/src/surf/network.c
+++ b/src/surf/network.c
@@ -18,6 +18,10 @@ static void (*network_solve) (lmm_system_t) = NULL;
 xbt_dict_t link_set = NULL;
 xbt_dict_t network_card_set = NULL;
 
+double latency_factor = 1.0; /* default value */
+double bandwidth_factor = 1.0; /* default value */
+
+
 int card_number = 0;
 int host_number = 0;
 link_CM02_t **routing_table = NULL;
@@ -70,7 +74,7 @@ static link_CM02_t link_new(char *name,
 
   nw_link->constraint =
       lmm_constraint_new(network_maxmin_system, nw_link,
-			 nw_link->bw_current);
+			 bandwidth_factor*nw_link->bw_current);
 
   if (policy == SURF_LINK_FATPIPE)
     lmm_constraint_shared(nw_link->constraint);
@@ -433,7 +437,7 @@ static void update_resource_state(void *id,
   if (event_type == nw_link->bw_event) {
     nw_link->bw_current = value;
     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
-				nw_link->bw_current);
+				bandwidth_factor*nw_link->bw_current);
   } else if (event_type == nw_link->lat_event) {
     double delta = value - nw_link->lat_current;
     lmm_variable_t var = NULL;
@@ -459,8 +463,7 @@ static void update_resource_state(void *id,
       if (!(action->suspended))
 	lmm_update_variable_weight(network_maxmin_system, action->variable,
 				   action->lat_current);
-      lmm_update_variable_latency(network_maxmin_system, action->variable,
-				  delta);
+
     }
   } else if (event_type == nw_link->state_event) {
     if (value > 0)
@@ -542,6 +545,8 @@ static surf_action_t communicate(void *src, void *dst, double size,
   /* LARGE PLATFORMS HACK:
      Add src->link and dst->link latencies */
   action->lat_current = action->latency;
+  action->latency *= latency_factor;
+
 
   /* LARGE PLATFORMS HACK:
      lmm_variable_new(..., total_route_size)*/
@@ -573,8 +578,6 @@ static surf_action_t communicate(void *src, void *dst, double size,
       lmm_update_variable_bound(network_maxmin_system, action->variable,
 				action->rate);
   }
-  lmm_update_variable_latency(network_maxmin_system, action->variable,
-			      action->latency);
 
   for (i = 0; i < route_size; i++)
     lmm_expand(network_maxmin_system, route[i]->constraint,
@@ -766,11 +769,12 @@ static void surf_network_model_init_internal(void)
     network_maxmin_system = lmm_system_new();
 }
 
-/***************************************************************************/
-/* New TCP sharing model based on thesis experimantation and discussions.  */
-/***************************************************************************/
+/************************************************************************/
+/* New model based on optimizations discussed during this thesis        */
+/************************************************************************/
 void surf_network_model_init_LegrandVelho(const char *filename)
 {
+
   if (surf_network_model)
     return;
   surf_network_model_init_internal();
@@ -778,10 +782,12 @@ void surf_network_model_init_LegrandVelho(const char *filename)
   xbt_dynar_push(model_list, &surf_network_model);
   network_solve = lmm_solve;
 
+  latency_factor = 10.4;
+  bandwidth_factor = 0.92;
+
   update_model_description(surf_network_model_description,
 			   "LegrandVelho",
 			   (surf_model_t) surf_network_model);
-  INFO0("LegrandVelho Model was chosen!!");
 }
 
 /***************************************************************************/