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Df parameter of Low models is replaced by weight because it means the same to maxmin...
[simgrid.git] / src / surf / network.c
index 0590f9a..7acfc6f 100644 (file)
@@ -6,49 +6,54 @@
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "network_private.h"
+#include "xbt/log.h"
+#include "xbt/str.h"
 
-#define SG_TCP_CTE_GAMMA 20000.0
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(network, surf,
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
                                "Logging specific to the SURF network module");
 
-surf_network_resource_t surf_network_resource = NULL;
-
-static xbt_dict_t network_link_set = NULL;
+surf_network_model_t surf_network_model = NULL;
+static lmm_system_t network_maxmin_system = NULL;
+static void (*network_solve) (lmm_system_t) = NULL;
+xbt_dict_t link_set = NULL;
 xbt_dict_t network_card_set = NULL;
 
-static int card_number = 0;
-static network_link_t **routing_table = NULL;
-static int *routing_table_size = NULL;
-
-#define ROUTE(i,j) routing_table[(i)+(j)*card_number]
-#define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
+int card_number = 0;
+int host_number = 0;
+link_CM02_t **routing_table = NULL;
+int *routing_table_size = NULL;
+static link_CM02_t loopback = NULL;
 
 static void create_routing_table(void)
 {
-  routing_table = xbt_new0(network_link_t *, card_number * card_number);
-  routing_table_size = xbt_new0(int, card_number * card_number);
+  routing_table =
+      xbt_new0(link_CM02_t *, /*card_number * card_number */ host_number * host_number);
+  routing_table_size = xbt_new0(int, /*card_number * card_number*/ host_number * host_number);
 }
 
-static void network_link_free(void *nw_link)
+static void link_free(void *nw_link)
 {
-  xbt_free(((network_link_t)nw_link)->name);
-  xbt_free(nw_link);
+  free(((link_CM02_t) nw_link)->name);
+  xbt_dict_free(&(((link_CM02_t)nw_link)->properties));
+  free(nw_link);
 }
 
-static network_link_t network_link_new(char *name,
-                                      double bw_initial,
-                                      tmgr_trace_t bw_trace,
-                                      double lat_initial,
-                                      tmgr_trace_t lat_trace,
-                                      e_surf_network_link_state_t
-                                      state_initial,
-                                      tmgr_trace_t state_trace)
+static link_CM02_t link_new(char *name,
+                           double bw_initial,
+                           tmgr_trace_t bw_trace,
+                           double lat_initial,
+                           tmgr_trace_t lat_trace,
+                           e_surf_link_state_t
+                           state_initial,
+                           tmgr_trace_t state_trace,
+                           e_surf_link_sharing_policy_t
+                           policy, xbt_dict_t properties)
 {
-  network_link_t nw_link = xbt_new0(s_network_link_t, 1);
-
+  link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
+  xbt_assert1(!xbt_dict_get_or_null(link_set, name), 
+             "Link '%s' declared several times in the platform file.", name);   
 
-  nw_link->resource = (surf_resource_t) surf_network_resource;
+  nw_link->model = (surf_model_t) surf_network_model;
   nw_link->name = name;
   nw_link->bw_current = bw_initial;
   if (bw_trace)
@@ -64,158 +69,260 @@ static network_link_t network_link_new(char *name,
        tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
 
   nw_link->constraint =
-      lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
+      lmm_constraint_new(network_maxmin_system, nw_link,
+                        nw_link->bw_current);
 
-  xbt_dict_set(network_link_set, name, nw_link, network_link_free);
+  if (policy == SURF_LINK_FATPIPE)
+    lmm_constraint_shared(nw_link->constraint);
+
+  nw_link->properties = properties;
+
+  current_property_set = properties;
+
+  xbt_dict_set(link_set, name, nw_link, link_free);
 
   return nw_link;
 }
 
 static void network_card_free(void *nw_card)
 {
-  xbt_free(((network_card_t)nw_card)->name);
-  xbt_free(nw_card);
+  free(((network_card_CM02_t) nw_card)->name);
+  free(nw_card);
 }
 
 static int network_card_new(const char *card_name)
 {
-  network_card_t card = NULL;
-
-  xbt_dict_get(network_card_set, card_name, (void *) &card);
+  network_card_CM02_t card =
+      xbt_dict_get_or_null(network_card_set, card_name);
 
   if (!card) {
-    card = xbt_new0(s_network_card_t, 1);
+    card = xbt_new0(s_network_card_CM02_t, 1);
     card->name = xbt_strdup(card_name);
-    card->id = card_number++;
+    card->id = host_number++;
     xbt_dict_set(network_card_set, card_name, card, network_card_free);
   }
   return card->id;
 }
 
-static void route_new(int src_id, int dst_id, char **links, int nb_link)
+static void route_new(int src_id, int dst_id,
+                     link_CM02_t * link_list, int nb_link)
 {
-  network_link_t *link_list = NULL;
-  int i;
-
   ROUTE_SIZE(src_id, dst_id) = nb_link;
-  link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_t, nb_link));
-  for (i = 0; i < nb_link; i++) {
-    xbt_dict_get(network_link_set, links[i], (void *) &(link_list[i]));
-    xbt_free(links[i]);
-  }
-  xbt_free(links);
+  ROUTE(src_id, dst_id) = link_list =
+      xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 }
 
-static void parse_network_link(void)
+static void parse_link_init(void)
 {
-  char *name;
+  char *name_link;
   double bw_initial;
   tmgr_trace_t bw_trace;
   double lat_initial;
   tmgr_trace_t lat_trace;
-  e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
+  e_surf_link_state_t state_initial_link = SURF_LINK_ON;
+  e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
   tmgr_trace_t state_trace;
 
-  name = xbt_strdup(A_network_link_name);
-  surf_parse_get_double(&bw_initial,A_network_link_bandwidth);
-  surf_parse_get_trace(&bw_trace, A_network_link_bandwidth_file);
-  surf_parse_get_double(&lat_initial,A_network_link_latency);
-  surf_parse_get_trace(&lat_trace, A_network_link_latency_file);
+  name_link = xbt_strdup(A_surfxml_link_id);
+  surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
+  surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
+  surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
+  surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
+
+  xbt_assert0((A_surfxml_link_state ==
+              A_surfxml_link_state_ON)
+             || (A_surfxml_link_state ==
+                 A_surfxml_link_state_OFF), "Invalid state");
+  if (A_surfxml_link_state == A_surfxml_link_state_ON)
+    state_initial_link = SURF_LINK_ON;
+  else if (A_surfxml_link_state ==
+          A_surfxml_link_state_OFF)
+    state_initial_link = SURF_LINK_OFF;
+
+  if (A_surfxml_link_sharing_policy ==
+      A_surfxml_link_sharing_policy_SHARED)
+    policy_initial_link = SURF_LINK_SHARED;
+  else if (A_surfxml_link_sharing_policy ==
+          A_surfxml_link_sharing_policy_FATPIPE)
+    policy_initial_link = SURF_LINK_FATPIPE;
+
+  surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
+
+  link_new(name_link, bw_initial, bw_trace,
+                  lat_initial, lat_trace, state_initial_link, state_trace,
+                  policy_initial_link, xbt_dict_new());
 
-  xbt_assert0((A_network_link_state==A_network_link_state_ON)||
-             (A_network_link_state==A_network_link_state_OFF),
-             "Invalid state")
-  if (A_network_link_state==A_network_link_state_ON) 
-    state_initial = SURF_NETWORK_LINK_ON;
-  if (A_network_link_state==A_network_link_state_OFF) 
-    state_initial = SURF_NETWORK_LINK_OFF;
-  surf_parse_get_trace(&state_trace,A_network_link_state_file);
-
-  network_link_new(name, bw_initial, bw_trace,
-                  lat_initial, lat_trace, state_initial, state_trace);
 }
 
-static int nb_link = 0;
-static char **link_name = NULL;
 static int src_id = -1;
 static int dst_id = -1;
 
 static void parse_route_set_endpoints(void)
 {
-  src_id = network_card_new(A_route_src);
-  dst_id = network_card_new(A_route_dst);
-  nb_link = 0;
-  link_name = NULL;
+  src_id = network_card_new(A_surfxml_route_src);
+  dst_id = network_card_new(A_surfxml_route_dst);
+  route_action = A_surfxml_route_action;
 }
 
-static void parse_route_elem(void)
+static void parse_route_set_route(void)
 {
-  nb_link++;
-  link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
-  link_name[(nb_link) - 1] = xbt_strdup(A_route_element_name);
+  char *name;
+  if (src_id != -1 && dst_id != -1) {
+    name = bprintf("%x#%x",src_id, dst_id);
+    manage_route(route_table, name, route_action, 0);
+    free(name);    
+  }
 }
 
-static void parse_route_set_route(void)
+static void add_loopback(void)
 {
-  route_new(src_id, dst_id, link_name, nb_link);
+  int i;
+  /* Adding loopback if needed */
+  for (i = 0; i < host_number; i++)
+    if (!ROUTE_SIZE(i, i)) {
+      if (!loopback)
+       loopback = link_new(xbt_strdup("__MSG_loopback__"),
+                                   498000000, NULL, 0.000015, NULL,
+                                   SURF_LINK_ON, NULL,
+                                   SURF_LINK_FATPIPE,NULL);
+      ROUTE_SIZE(i, i) = 1;
+      ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
+      ROUTE(i, i)[0] = loopback;
+    }
 }
 
-static void parse_file(const char *file)
+static void add_route(void)
 {
-  /* Figuring out the network links */
-  surf_parse_reset_parser();
-  ETag_network_link_fun=parse_network_link;
-  surf_parse_open(file);
-  xbt_assert1((!surf_parse()),"Parse error in %s",file);
-  surf_parse_close();
-
-  /* Figuring out the network cards used */
-  surf_parse_reset_parser();
-  STag_route_fun=parse_route_set_endpoints;
-  surf_parse_open(file);
-  xbt_assert1((!surf_parse()),"Parse error in %s",file);
-  surf_parse_close();
-
-  create_routing_table();
-
-  /* Building the routes */
-  surf_parse_reset_parser();
-  STag_route_fun=parse_route_set_endpoints;
-  ETag_route_element_fun=parse_route_elem;
-  ETag_route_fun=parse_route_set_route;
-  surf_parse_open(file);
-  xbt_assert1((!surf_parse()),"Parse error in %s",file);
-  surf_parse_close();
+  xbt_ex_t e;
+  int nb_link = 0;
+  unsigned int cpt = 0;    
+  int link_list_capacity = 0;
+  link_CM02_t *link_list = NULL;
+  xbt_dict_cursor_t cursor = NULL;
+  char *key,*data, *end;
+  const char *sep = "#";
+  xbt_dynar_t links, keys;
+
+  if (routing_table == NULL) create_routing_table();
+
+  xbt_dict_foreach(route_table, cursor, key, data) {
+         char* link = NULL;
+    nb_link = 0;
+    links = (xbt_dynar_t)data;
+    keys = xbt_str_split_str(key, sep);
+
+    link_list_capacity = xbt_dynar_length(links);
+    link_list = xbt_new(link_CM02_t, link_list_capacity);
+
+    src_id = strtol(xbt_dynar_get_as(keys, 0, char*), &end, 16);
+    dst_id = strtol(xbt_dynar_get_as(keys, 1, char*), &end, 16);
+    xbt_dynar_free(&keys);
+    xbt_dynar_foreach (links, cpt, link) {
+      TRY {
+       link_list[nb_link++] = xbt_dict_get(link_set, link);
+      }
+      CATCH(e) {
+        RETHROW1("Link %s not found (dict raised this exception: %s)", link);
+      }     
+    }
+    route_new(src_id, dst_id, link_list, nb_link);
+   }
 }
 
-static void *name_service(const char *name)
+static void count_hosts(void)
 {
-  network_card_t card = NULL;
+   host_number++;
+}
 
-  xbt_dict_get(network_card_set, name, (void *) &card);
 
+static void add_traces(void) {
+   xbt_dict_cursor_t cursor=NULL;
+   char *trace_name,*elm;
+   
+   static int called = 0;
+   if (called) return;
+   called = 1;
+
+   /* connect all traces relative to network */
+   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
+      tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
+      link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
+      
+      xbt_assert1(link, "Link %s undefined", elm);
+      xbt_assert1(trace, "Trace %s undefined", trace_name);
+      
+      link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
+   }
+
+   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
+      tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
+      link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
+      
+      xbt_assert1(link, "Link %s undefined", elm);
+      xbt_assert1(trace, "Trace %s undefined", trace_name);
+      
+      link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
+   }
+   
+   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
+      tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
+      link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
+      
+      xbt_assert1(link, "Link %s undefined", elm);
+      xbt_assert1(trace, "Trace %s undefined", trace_name);
+      
+      link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
+   }
+}
+
+static void define_callbacks(const char *file)
+{
+  /* Figuring out the network links */
+  surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
+  surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
+  surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
+  surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
+  surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
+  surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
+  surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
+}
+
+static void *name_service(const char *name)
+{
+  network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
   return card;
 }
 
 static const char *get_resource_name(void *resource_id)
 {
-  return ((network_card_t) resource_id)->name;
+  return ((network_card_CM02_t) resource_id)->name;
 }
 
 static int resource_used(void *resource_id)
 {
-  return lmm_constraint_used(maxmin_system,
-                            ((network_link_t) resource_id)->constraint);
+  return lmm_constraint_used(network_maxmin_system,
+                            ((link_CM02_t) resource_id)->
+                            constraint);
 }
 
-static void action_free(surf_action_t action)
+static int action_free(surf_action_t action)
 {
-  xbt_swag_remove(action, action->state_set);
-  if(((surf_action_network_t)action)->variable)
-    lmm_variable_free(maxmin_system, ((surf_action_network_t)action)->variable);
-  xbt_free(action);
+  action->refcount --;
+  if (!action->refcount ) {
+    xbt_swag_remove(action, action->state_set);
+    if (((surf_action_network_CM02_t) action)->variable)
+      lmm_variable_free(network_maxmin_system,
+                       ((surf_action_network_CM02_t) action)->variable);
+    free(action);
+    return 1;
+  }
+  return 0;
+}
 
-  return;
+static void action_use(surf_action_t action)
+{
+  action->refcount ++;
 }
 
 static void action_cancel(surf_action_t action)
@@ -231,11 +338,11 @@ static void action_recycle(surf_action_t action)
 static void action_change_state(surf_action_t action,
                                e_surf_action_state_t state)
 {
-  if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED))
-    if(((surf_action_network_t)action)->variable) {
-      lmm_variable_free(maxmin_system, ((surf_action_network_t)action)->variable);
-      ((surf_action_network_t)action)->variable = NULL;
-    }
+/*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
+/*     if(((surf_action_network_CM02_t)action)->variable) { */
+/*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
+/*       ((surf_action_network_CM02_t)action)->variable = NULL; */
+/*     } */
 
   surf_action_change_state(action, state);
   return;
@@ -243,119 +350,137 @@ static void action_change_state(surf_action_t action,
 
 static double share_resources(double now)
 {
-  s_surf_action_network_t s_action;
-  surf_action_network_t action = NULL;
-  xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
-  double min = generic_maxmin_share_resources(running_actions,
-                                             xbt_swag_offset(s_action, variable));
+  s_surf_action_network_CM02_t s_action;
+  surf_action_network_CM02_t action = NULL;
+  xbt_swag_t running_actions =
+      surf_network_model->common_public->states.running_action_set;
+  double min;
+
+  min = generic_maxmin_share_resources(running_actions,
+                                      xbt_swag_offset(s_action,
+                                                      variable),
+                                      network_maxmin_system,
+                                      network_solve);
 
+#define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
+  
   xbt_swag_foreach(action, running_actions) {
-    if(action->latency>0) {
-      if(min<0) min = action->latency;
-      else if (action->latency<min) min = action->latency;
+    if (action->latency > 0) {
+      if (min < 0)
+       min = action->latency;
+      else if (action->latency < min)
+       min = action->latency;
     }
   }
 
   return min;
 }
 
-
 static void update_actions_state(double now, double delta)
 {
   double deltap = 0.0;
-  surf_action_network_t action = NULL;
-  surf_action_network_t next_action = NULL;
+  surf_action_network_CM02_t action = NULL;
+  surf_action_network_CM02_t next_action = NULL;
   xbt_swag_t running_actions =
-      surf_network_resource->common_public->states.running_action_set;
-  xbt_swag_t failed_actions =
-      surf_network_resource->common_public->states.failed_action_set;
+      surf_network_model->common_public->states.running_action_set;
+  /*
+     xbt_swag_t failed_actions =
+     surf_network_model->common_public->states.failed_action_set;
+   */
 
   xbt_swag_foreach_safe(action, next_action, running_actions) {
     deltap = delta;
     if (action->latency > 0) {
       if (action->latency > deltap) {
-       surf_double_update(&(action->latency),deltap);
+       double_update(&(action->latency), deltap);
        deltap = 0.0;
       } else {
-       surf_double_update(&(deltap), action->latency);
+       double_update(&(deltap), action->latency);
        action->latency = 0.0;
       }
-      if ((action->latency == 0.0) && !(action->suspended)) 
-       lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
+      if ((action->latency == 0.0) && !(action->suspended))
+       lmm_update_variable_weight(network_maxmin_system, action->variable,
+                                  action->lat_current);
     }
-    surf_double_update(&(action->generic_action.remains),
-       lmm_variable_getvalue(action->variable) * deltap);
+    double_update(&(action->generic_action.remains),
+                 lmm_variable_getvalue(action->variable) * deltap);
     if (action->generic_action.max_duration != NO_MAX_DURATION)
-      surf_double_update(&(action->generic_action.max_duration), delta);
+      double_update(&(action->generic_action.max_duration), delta);
 
-    /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
-
-    if (action->generic_action.remains <= 0) {
+    if ((action->generic_action.remains <= 0) &&
+       (lmm_get_variable_weight(action->variable) > 0)) {
       action->generic_action.finish = surf_get_clock();
       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
               (action->generic_action.max_duration <= 0)) {
       action->generic_action.finish = surf_get_clock();
       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
-    } else {                   /* Need to check that none of the resource has failed */
-      lmm_constraint_t cnst = NULL;
-      int i = 0;
-      network_link_t nw_link = NULL;
-
-      while ((cnst =
-             lmm_get_cnst_from_var(maxmin_system, action->variable,
-                                   i++))) {
-       nw_link = lmm_constraint_id(cnst);
-       if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
-         action->generic_action.finish = surf_get_clock();
-         action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
-         break;
-       }
-      }
     }
   }
 
-  xbt_swag_foreach_safe(action, next_action, failed_actions) {
-    lmm_variable_disable(maxmin_system, action->variable);
-  }
-
   return;
 }
 
 static void update_resource_state(void *id,
                                  tmgr_trace_event_t event_type,
-                                 double value)
+                                 double value, double date)
 {
-  network_link_t nw_link = id;
+  link_CM02_t nw_link = id;
   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
-  /*    "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
-  /*    value, event_type); */
+  /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
+  /*     value, event_type); */
 
   if (event_type == nw_link->bw_event) {
     nw_link->bw_current = value;
-    lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
+    lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
                                nw_link->bw_current);
   } else if (event_type == nw_link->lat_event) {
     double delta = value - nw_link->lat_current;
     lmm_variable_t var = NULL;
-    surf_action_network_t action = NULL;
+    lmm_element_t elem = NULL;
+    surf_action_network_CM02_t action = NULL;
 
     nw_link->lat_current = value;
-    while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
+    while ((var= lmm_get_var_from_cnst
+          (network_maxmin_system, nw_link->constraint, &elem))) {
       action = lmm_variable_id(var);
       action->lat_current += delta;
-      if(action->rate<0)
-       lmm_update_variable_bound(maxmin_system, action->variable,
-                                 SG_TCP_CTE_GAMMA / action->lat_current);
-      else 
-       lmm_update_variable_bound(maxmin_system, action->variable,
-                                 min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
+      if (action->rate < 0)
+       lmm_update_variable_bound(network_maxmin_system, action->variable,
+                                 SG_TCP_CTE_GAMMA / (2.0 *
+                                                     action->
+                                                     lat_current));
+      else
+       lmm_update_variable_bound(network_maxmin_system, action->variable,
+                                 min(action->rate,
+                                     SG_TCP_CTE_GAMMA / (2.0 *
+                                                         action->
+                                                         lat_current)));
+      if (!(action->suspended))
+       lmm_update_variable_weight(network_maxmin_system, action->variable,
+                                  action->lat_current);
+
     }
   } else if (event_type == nw_link->state_event) {
     if (value > 0)
-      nw_link->state_current = SURF_NETWORK_LINK_ON;
-    else
-      nw_link->state_current = SURF_NETWORK_LINK_OFF;
+      nw_link->state_current = SURF_LINK_ON;
+    else {
+      lmm_constraint_t cnst = nw_link->constraint;
+      lmm_variable_t var = NULL;
+      lmm_element_t elem = NULL;
+
+      nw_link->state_current = SURF_LINK_OFF;
+      while ((var= lmm_get_var_from_cnst
+             (network_maxmin_system, cnst, &elem))) {
+       surf_action_t action = lmm_variable_id(var) ;
+
+       if(surf_action_get_state(action)==SURF_ACTION_RUNNING ||
+          surf_action_get_state(action)==SURF_ACTION_READY) {
+         action->finish = date;
+         action_change_state( action, SURF_ACTION_FAILED);
+       }
+      }
+    }
   } else {
     CRITICAL0("Unknown event ! \n");
     xbt_abort();
@@ -364,163 +489,296 @@ static void update_resource_state(void *id,
   return;
 }
 
-static surf_action_t communicate(void *src, void *dst, double size, double rate)
+static surf_action_t communicate(void *src, void *dst, double size,
+                                double rate)
 {
-  surf_action_network_t action = NULL;
-  network_card_t card_src = src;
-  network_card_t card_dst = dst;
+  surf_action_network_CM02_t action = NULL;
+  /* LARGE PLATFORMS HACK:
+     Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
+     Use the cluster_id for ->id */
+  network_card_CM02_t card_src = src;
+  network_card_CM02_t card_dst = dst;
   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
-  network_link_t *route = ROUTE(card_src->id, card_dst->id);
+  link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
+  /* LARGE PLATFORMS HACK:
+     total_route_size = route_size + src->link_nb + dst->nb */
   int i;
 
-  action = xbt_new0(s_surf_action_network_t, 1);
+  XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
+  /* LARGE PLATFORMS HACK:
+     assert on total_route_size */
+  xbt_assert2(route_size,
+             "You're trying to send data from %s to %s but there is no connexion between these two cards.",
+             card_src->name, card_dst->name);
+
+  action = xbt_new0(s_surf_action_network_CM02_t, 1);
 
+  action->generic_action.refcount  = 1;
   action->generic_action.cost = size;
   action->generic_action.remains = size;
   action->generic_action.max_duration = NO_MAX_DURATION;
-  action->generic_action.start = -1.0;
+  action->generic_action.start = surf_get_clock();
   action->generic_action.finish = -1.0;
-  action->generic_action.resource_type =
-      (surf_resource_t) surf_network_resource;
-
+  action->generic_action.model_type =
+      (surf_model_t) surf_network_model;
+  action->suspended = 0;       /* Should be useless because of the 
+                                  calloc but it seems to help valgrind... */
   action->generic_action.state_set =
-      surf_network_resource->common_public->states.running_action_set;
-
+      surf_network_model->common_public->states.running_action_set;
+  for (i = 0; i < route_size; i++) 
+    if(route[i]->state_current == SURF_LINK_OFF) {
+      action->generic_action.state_set =
+       surf_network_model->common_public->states.failed_action_set;
+      break;
+    }
+  
   xbt_swag_insert(action, action->generic_action.state_set);
   action->rate = rate;
 
   action->latency = 0.0;
   for (i = 0; i < route_size; i++)
     action->latency += route[i]->lat_current;
+  /* LARGE PLATFORMS HACK:
+     Add src->link and dst->link latencies */
   action->lat_current = action->latency;
 
-  if(action->latency>0)
-    action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
-                                       route_size);
-  else 
-    action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
-                                       route_size);
-
-  if(action->rate<0)
-    lmm_update_variable_bound(maxmin_system, action->variable,
-                             SG_TCP_CTE_GAMMA / action->lat_current);
-  else 
-    lmm_update_variable_bound(maxmin_system, action->variable,
-                             min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
-
-  if(route_size == 0) {
-    action_change_state((surf_action_t) action, SURF_ACTION_DONE);
+  /* LARGE PLATFORMS HACK:
+     lmm_variable_new(..., total_route_size)*/
+  if (action->latency > 0)
+    action->variable =
+       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
+                        route_size);
+  else
+    action->variable =
+       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
+                        route_size);
+
+  if (action->rate < 0) {
+    if (action->lat_current > 0)
+      lmm_update_variable_bound(network_maxmin_system, action->variable,
+                               SG_TCP_CTE_GAMMA / (2.0 *
+                                                   action->lat_current));
+    else
+      lmm_update_variable_bound(network_maxmin_system, action->variable,
+                               -1.0);
+  } else {
+    if (action->lat_current > 0)
+      lmm_update_variable_bound(network_maxmin_system, action->variable,
+                               min(action->rate,
+                                   SG_TCP_CTE_GAMMA / (2.0 *
+                                                       action->
+                                                       lat_current)));
+    else
+      lmm_update_variable_bound(network_maxmin_system, action->variable,
+                               action->rate);
   }
 
   for (i = 0; i < route_size; i++)
-    lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
+    lmm_expand(network_maxmin_system, route[i]->constraint,
+              action->variable, 1.0);
+  /* LARGE PLATFORMS HACK:
+     expand also with src->link and dst->link */
+
+  XBT_OUT;
 
   return (surf_action_t) action;
 }
 
+/* returns an array of link_CM02_t */
+static const void **get_route(void *src, void *dst)
+{
+  network_card_CM02_t card_src = src;
+  network_card_CM02_t card_dst = dst;
+  return (const void **) ROUTE(card_src->id, card_dst->id);
+}
+
+static int get_route_size(void *src, void *dst)
+{
+  network_card_CM02_t card_src = src;
+  network_card_CM02_t card_dst = dst;
+  return ROUTE_SIZE(card_src->id, card_dst->id);
+}
+
+static const char *get_link_name(const void *link)
+{
+  return ((link_CM02_t) link)->name;
+}
+
+static double get_link_bandwidth(const void *link)
+{
+  return ((link_CM02_t) link)->bw_current;
+}
+
+static double get_link_latency(const void *link)
+{
+  return ((link_CM02_t) link)->lat_current;
+}
+
+static int link_shared(const void *link)
+{
+  return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
+}
+
+static xbt_dict_t get_properties(void *link)
+{
+ return ((link_CM02_t) link)->properties;
+}
+
 static void action_suspend(surf_action_t action)
 {
-  ((surf_action_network_t) action)->suspended = 1;
-  lmm_update_variable_weight(maxmin_system,
-                            ((surf_action_network_t) action)->variable, 0.0);
+  ((surf_action_network_CM02_t) action)->suspended = 1;
+  lmm_update_variable_weight(network_maxmin_system,
+                            ((surf_action_network_CM02_t) action)->
+                            variable, 0.0);
 }
 
 static void action_resume(surf_action_t action)
 {
-  lmm_update_variable_weight(maxmin_system,
-                            ((surf_action_network_t) action)->variable, 1.0);
-  ((surf_action_network_t) action)->suspended = 0;
+  if (((surf_action_network_CM02_t) action)->suspended) {
+    lmm_update_variable_weight(network_maxmin_system,
+                              ((surf_action_network_CM02_t) action)->
+                              variable,
+                              ((surf_action_network_CM02_t) action)->
+                              lat_current);
+    ((surf_action_network_CM02_t) action)->suspended = 0;
+  }
 }
 
 static int action_is_suspended(surf_action_t action)
 {
-  return ((surf_action_network_t) action)->suspended;
+  return ((surf_action_network_CM02_t) action)->suspended;
+}
+
+static void action_set_max_duration(surf_action_t action, double duration)
+{
+  action->max_duration = duration;
 }
 
 static void finalize(void)
 {
-  int i,j;
+  int i, j;
 
   xbt_dict_free(&network_card_set);
-  xbt_dict_free(&network_link_set);
-  xbt_swag_free(surf_network_resource->common_public->states.
+  xbt_dict_free(&link_set);
+  xbt_swag_free(surf_network_model->common_public->states.
                ready_action_set);
-  xbt_swag_free(surf_network_resource->common_public->states.
+  xbt_swag_free(surf_network_model->common_public->states.
                running_action_set);
-  xbt_swag_free(surf_network_resource->common_public->states.
+  xbt_swag_free(surf_network_model->common_public->states.
                failed_action_set);
-  xbt_swag_free(surf_network_resource->common_public->states.
+  xbt_swag_free(surf_network_model->common_public->states.
                done_action_set);
-  xbt_free(surf_network_resource->common_public);
-  xbt_free(surf_network_resource->common_private);
-  xbt_free(surf_network_resource->extension_public);
-
-  xbt_free(surf_network_resource);
-  surf_network_resource = NULL;
-
-  for (i = 0; i < card_number; i++) 
-    for (j = 0; j < card_number; j++) 
-      xbt_free(ROUTE(i,j));
-  xbt_free(routing_table);
+  free(surf_network_model->common_public);
+  free(surf_network_model->common_private);
+  free(surf_network_model->extension_public);
+
+  free(surf_network_model);
+  surf_network_model = NULL;
+
+  loopback = NULL;
+  for (i = 0; i < host_number; i++)
+    for (j = 0; j < host_number; j++)
+      free(ROUTE(i, j));
+  free(routing_table);
   routing_table = NULL;
-  xbt_free(routing_table_size);
+  free(routing_table_size);
   routing_table_size = NULL;
-  card_number = 0;
+  host_number = 0;
+  lmm_system_free(network_maxmin_system);
+  network_maxmin_system = NULL;
 }
 
-static void surf_network_resource_init_internal(void)
+static void surf_network_model_init_internal(void)
 {
   s_surf_action_t action;
 
-  surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
+  surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 
-  surf_network_resource->common_private =
-      xbt_new0(s_surf_resource_private_t, 1);
-  surf_network_resource->common_public =
-      xbt_new0(s_surf_resource_public_t, 1);
-  surf_network_resource->extension_public =
-      xbt_new0(s_surf_network_resource_extension_public_t, 1);
+  surf_network_model->common_private =
+      xbt_new0(s_surf_model_private_t, 1);
+  surf_network_model->common_public =
+      xbt_new0(s_surf_model_public_t, 1);
+  surf_network_model->extension_public =
+      xbt_new0(s_surf_network_model_extension_public_t, 1);
 
-  surf_network_resource->common_public->states.ready_action_set =
+  surf_network_model->common_public->states.ready_action_set =
       xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_network_resource->common_public->states.running_action_set =
+  surf_network_model->common_public->states.running_action_set =
       xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_network_resource->common_public->states.failed_action_set =
+  surf_network_model->common_public->states.failed_action_set =
       xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_network_resource->common_public->states.done_action_set =
+  surf_network_model->common_public->states.done_action_set =
       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 
-  surf_network_resource->common_public->name_service = name_service;
-  surf_network_resource->common_public->get_resource_name =
+  surf_network_model->common_public->name_service = name_service;
+  surf_network_model->common_public->get_resource_name =
       get_resource_name;
-  surf_network_resource->common_public->action_get_state =
+  surf_network_model->common_public->action_get_state =
       surf_action_get_state;
-  surf_network_resource->common_public->action_free = action_free;
-  surf_network_resource->common_public->action_cancel = action_cancel;
-  surf_network_resource->common_public->action_recycle = action_recycle;
-  surf_network_resource->common_public->action_change_state =
+  surf_network_model->common_public->action_get_start_time =
+      surf_action_get_start_time;
+  surf_network_model->common_public->action_get_finish_time =
+      surf_action_get_finish_time;
+  surf_network_model->common_public->action_free = action_free;
+  surf_network_model->common_public->action_use = action_use;
+  surf_network_model->common_public->action_cancel = action_cancel;
+  surf_network_model->common_public->action_recycle = action_recycle;
+  surf_network_model->common_public->action_change_state =
       action_change_state;
-  surf_network_resource->common_public->action_set_data = surf_action_set_data;
-  surf_network_resource->common_public->name = "network";
+  surf_network_model->common_public->action_set_data =
+      surf_action_set_data;
+  surf_network_model->common_public->name = "network";
 
-  surf_network_resource->common_private->resource_used = resource_used;
-  surf_network_resource->common_private->share_resources = share_resources;
-  surf_network_resource->common_private->update_actions_state =
+  surf_network_model->common_private->resource_used = resource_used;
+  surf_network_model->common_private->share_resources = share_resources;
+  surf_network_model->common_private->update_actions_state =
       update_actions_state;
-  surf_network_resource->common_private->update_resource_state =
+  surf_network_model->common_private->update_resource_state =
       update_resource_state;
-  surf_network_resource->common_private->finalize = finalize;
-
-  surf_network_resource->common_public->suspend = action_suspend;
-  surf_network_resource->common_public->resume = action_resume;
-  surf_network_resource->common_public->is_suspended = action_is_suspended;
-
-  surf_network_resource->extension_public->communicate = communicate;
-
-  network_link_set = xbt_dict_new();
+  surf_network_model->common_private->finalize = finalize;
+
+  surf_network_model->common_public->suspend = action_suspend;
+  surf_network_model->common_public->resume = action_resume;
+  surf_network_model->common_public->is_suspended = action_is_suspended;
+  surf_cpu_model->common_public->set_max_duration =
+      action_set_max_duration;
+
+  surf_network_model->extension_public->communicate = communicate;
+  surf_network_model->extension_public->get_route = get_route;
+  surf_network_model->extension_public->get_route_size = get_route_size;
+  surf_network_model->extension_public->get_link_name = get_link_name;
+  surf_network_model->extension_public->get_link_bandwidth =
+      get_link_bandwidth;
+  surf_network_model->extension_public->get_link_latency =
+      get_link_latency;
+  surf_network_model->extension_public->link_shared =
+      link_shared;
+
+  surf_network_model->common_public->get_properties =  get_properties;
+
+  link_set = xbt_dict_new();
   network_card_set = xbt_dict_new();
 
-  xbt_assert0(maxmin_system, "surf_init has to be called first!");
+  if (!network_maxmin_system)
+    network_maxmin_system = lmm_system_new();
+}
+
+/***************************************************************************/
+/* New TCP sharing model based on thesis experimantation and discussions.  */
+/***************************************************************************/
+void surf_network_model_init_LegrandVelho(const char *filename)
+{
+  if (surf_network_model)
+    return;
+  surf_network_model_init_internal();
+  define_callbacks(filename);
+  xbt_dynar_push(model_list, &surf_network_model);
+  network_solve = lmm_solve;
+
+  update_model_description(surf_network_model_description,
+                          "LegrandVelho",
+                          (surf_model_t) surf_network_model);
+  INFO0("LegrandVelho Model was chosen!!");
 }
 
 /***************************************************************************/
@@ -534,11 +792,86 @@ static void surf_network_resource_init_internal(void)
 /*   month         = {oct}, */
 /*   year          = {2002} */
 /* } */
-void surf_network_resource_init_CM02(const char *filename)
+void surf_network_model_init_CM02(const char *filename)
+{
+
+  if (surf_network_model)
+    return;
+  surf_network_model_init_internal();
+  define_callbacks(filename);
+  xbt_dynar_push(model_list, &surf_network_model);
+  network_solve = lmm_solve;
+
+  update_model_description(surf_network_model_description,
+                          "CM02",
+                          (surf_model_t) surf_network_model);
+}
+
+void surf_network_model_init_Reno(const char *filename)
+{
+  if (surf_network_model)
+    return;
+  surf_network_model_init_internal();
+  define_callbacks(filename);
+
+  xbt_dynar_push(model_list, &surf_network_model);
+  lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
+                                   func_reno_fpi);
+  network_solve = lagrange_solve;
+
+  update_model_description(surf_network_model_description,
+                          "Reno",
+                          (surf_model_t) surf_network_model);
+}
+
+
+void surf_network_model_init_Reno2(const char *filename)
+{
+  if (surf_network_model)
+    return;
+  surf_network_model_init_internal();
+  define_callbacks(filename);
+
+  xbt_dynar_push(model_list, &surf_network_model);
+  lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
+                                   func_reno2_fpi);
+  network_solve = lagrange_solve;
+
+  update_model_description(surf_network_model_description,
+                          "Reno2",
+                          (surf_model_t) surf_network_model);
+}
+
+void surf_network_model_init_Vegas(const char *filename)
 {
-  if (surf_network_resource)
+  if (surf_network_model)
     return;
-  surf_network_resource_init_internal();
-  parse_file(filename);
-  xbt_dynar_push(resource_list, &surf_network_resource);
+  surf_network_model_init_internal();
+  define_callbacks(filename);
+
+  xbt_dynar_push(model_list, &surf_network_model);
+  lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
+                                   func_vegas_fpi);
+  network_solve = lagrange_solve;
+
+  update_model_description(surf_network_model_description,
+                          "Vegas",
+                          (surf_model_t) surf_network_model);
+}
+
+#ifdef HAVE_SDP
+ void surf_network_model_init_SDP(const char *filename)
+{
+  if (surf_network_model)
+    return;
+  surf_network_model_init_internal();
+  define_callbacks(filename);
+
+  xbt_dynar_push(model_list, &surf_network_model);
+  network_solve = sdp_solve;
+
+  update_model_description(surf_network_model_description,
+                          "SDP",
+                          (surf_model_t) surf_network_model);
 }
+#endif