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[trace] removing obsolete code (host and link declaration is in instr_routing.c)
[simgrid.git] / src / surf / network.c
index fd42c0c..cfa1139 100644 (file)
@@ -1,6 +1,5 @@
-/*     $Id$     */
-
-/* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
+/* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 #include "xbt/str.h"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
-                               "Logging specific to the SURF network module");
+                                "Logging specific to the SURF network module");
 
-surf_network_model_t surf_network_model = NULL;
+surf_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;
-
-double latency_factor = 1.0; /* default value */
-double bandwidth_factor = 1.0; /* default value */
-double weight_S_parameter = 0.0; /* default value */
-
-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(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 link_free(void *nw_link)
-{
-  free(((link_CM02_t) nw_link)->name);
-  xbt_dict_free(&(((link_CM02_t)nw_link)->properties));
-  free(nw_link);
-}
-
-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)
-{
-  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->model = (surf_model_t) surf_network_model;
-  nw_link->name = name;
-  nw_link->bw_current = bw_initial;
-  if (bw_trace)
-    nw_link->bw_event =
-       tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
-  nw_link->lat_current = lat_initial;
-  if (lat_trace)
-    nw_link->lat_event =
-       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
-  nw_link->state_current = state_initial;
-  if (state_trace)
-    nw_link->state_event =
-       tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
 
-  nw_link->constraint =
-      lmm_constraint_new(network_maxmin_system, nw_link,
-                        bandwidth_factor*nw_link->bw_current);
+double sg_sender_gap = 0.0;
+double sg_latency_factor = 1.0; /* default value; can be set by model or from command line */
+double sg_bandwidth_factor = 1.0;       /* default value; can be set by model or from command line */
+double sg_weight_S_parameter = 0.0;     /* default value; can be set by model or from command line */
 
-  if (policy == SURF_LINK_FATPIPE)
-    lmm_constraint_shared(nw_link->constraint);
+double sg_tcp_gamma = 0.0;
+int sg_network_fullduplex = 0;
 
-  nw_link->properties = properties;
+xbt_dict_t gap_lookup = NULL;
 
-  current_property_set = properties;
+static double net_get_link_bandwidth(const void *link);
 
-  xbt_dict_set(link_set, name, nw_link, link_free);
+static void gap_append(double size, const link_CM02_t link, surf_action_network_CM02_t action) {
+   const char* src = link->lmm_resource.generic_resource.name;
+   xbt_fifo_t fifo;
+   surf_action_network_CM02_t last_action;
+   double bw;
 
-  return nw_link;
+   if(sg_sender_gap > 0.0) {
+      if(!gap_lookup) {
+         gap_lookup = xbt_dict_new();
+      }
+      fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, src);
+      action->sender.gap = 0.0;
+      if(fifo && xbt_fifo_size(fifo) > 0) {
+         /* Compute gap from last send */
+         last_action = (surf_action_network_CM02_t)xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
+         bw = net_get_link_bandwidth(link);
+         action->sender.gap = last_action->sender.gap + max(sg_sender_gap, last_action->sender.size / bw);
+         action->latency += action->sender.gap;
+      }
+      /* Append action as last send */
+      action->sender.link_name = link->lmm_resource.generic_resource.name;
+      fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
+      if(!fifo) {
+         fifo = xbt_fifo_new();
+         xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
+      }
+      action->sender.fifo_item = xbt_fifo_push(fifo, action);
+      action->sender.size = size;
+   }
 }
 
-static void network_card_free(void *nw_card)
+static void gap_unknown(surf_action_network_CM02_t action) {
+   action->sender.gap = 0.0;
+   action->sender.link_name = NULL;
+   action->sender.fifo_item = NULL;
+   action->sender.size = 0.0;
+}
+
+static void gap_remove(surf_action_network_CM02_t action) {
+   xbt_fifo_t fifo;
+   size_t size;
+
+   if(sg_sender_gap > 0.0 && action->sender.link_name && action->sender.fifo_item) {
+      fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
+      xbt_fifo_remove_item(fifo, action->sender.fifo_item);
+      size = xbt_fifo_size(fifo);
+      if(size == 0) {
+         xbt_fifo_free(fifo);
+         xbt_dict_remove(gap_lookup, action->sender.link_name);
+         size = xbt_dict_size(gap_lookup);
+         if(size == 0) {
+            xbt_dict_free(&gap_lookup);
+         }
+      }
+   }
+}
+
+/******************************************************************************/
+/*                           Factors callbacks                                */
+/******************************************************************************/
+static double constant_latency_factor(double size)
+{
+  return sg_latency_factor;
+}
+
+static double constant_bandwidth_factor(double size)
 {
-  free(((network_card_CM02_t) nw_card)->name);
-  free(nw_card);
+  return sg_bandwidth_factor;
 }
 
-static int network_card_new(const char *card_name)
+static double constant_bandwidth_constraint(double rate, double bound,
+                                            double size)
 {
-  network_card_CM02_t card =
-      xbt_dict_get_or_null(network_card_set, card_name);
+  return rate;
+}
+
+/**********************/
+/*   SMPI callbacks   */
+/**********************/
+static double smpi_latency_factor(double size)
+{
+  /* 1 B <= size <= 1 KiB */
+  if (size <= 1024.0) {
+    return 1.0056;
+  }
 
-  if (!card) {
-    card = xbt_new0(s_network_card_CM02_t, 1);
-    card->name = xbt_strdup(card_name);
-    card->id = host_number++;
-    xbt_dict_set(network_card_set, card_name, card, network_card_free);
+  /* 2 KiB <= size <= 32 KiB */
+  if (size <= 32768.0) {
+    return 1.8805;
   }
-  return card->id;
+
+  /* 64 KiB <= size <= 4 MiB */
+  return 22.7111;
+}
+
+static double smpi_bandwidth_factor(double size)
+{
+  /* 1 B <= size <= 1 KiB */
+  if (size <= 1024.0) {
+    return 0.2758;
+  }
+
+  /* 2 KiB <= size <= 32 KiB */
+  if (size <= 32768.0) {
+    return 0.5477;
+  }
+
+  /* 64 KiB <= size <= 4 MiB */
+  return 0.9359;
 }
 
-static void route_new(int src_id, int dst_id,
-                     link_CM02_t * link_list, int nb_link)
+static double smpi_bandwidth_constraint(double rate, double bound,
+                                        double size)
 {
-  ROUTE_SIZE(src_id, dst_id) = nb_link;
-  ROUTE(src_id, dst_id) = link_list =
-      xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
+  return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
 }
 
-static void parse_link_init(void)
+
+static double (*latency_factor_callback) (double) =
+    &constant_latency_factor;
+static double (*bandwidth_factor_callback) (double) =
+    &constant_bandwidth_factor;
+static double (*bandwidth_constraint_callback) (double, double, double) =
+    &constant_bandwidth_constraint;
+
+
+static link_CM02_t net_link_new(char *name,
+                                double bw_initial,
+                                tmgr_trace_t bw_trace,
+                                double lat_initial,
+                                tmgr_trace_t lat_trace,
+                                e_surf_resource_state_t
+                                state_initial,
+                                tmgr_trace_t state_trace,
+                                e_surf_link_sharing_policy_t
+                                policy, xbt_dict_t properties)
+{
+  link_CM02_t nw_link = (link_CM02_t)
+      surf_resource_lmm_new(sizeof(s_link_CM02_t),
+                            surf_network_model, name, properties,
+                            network_maxmin_system,
+                            sg_bandwidth_factor * bw_initial,
+                            history,
+                            state_initial, state_trace,
+                            bw_initial, bw_trace);
+
+  xbt_assert1(!xbt_dict_get_or_null
+              (surf_network_model->resource_set, name),
+              "Link '%s' declared several times in the platform file.",
+              name);
+
+  nw_link->lat_current = lat_initial;
+  if (lat_trace)
+    nw_link->lat_event =
+        tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
+
+  if (policy == SURF_LINK_FATPIPE)
+    lmm_constraint_shared(nw_link->lmm_resource.constraint);
+
+  xbt_dict_set(surf_network_model->resource_set, name, nw_link,
+               surf_resource_free);
+
+  return nw_link;
+}
+
+static void net_parse_link_init(void)
 {
   char *name_link;
   double bw_initial;
   tmgr_trace_t bw_trace;
   double lat_initial;
   tmgr_trace_t lat_trace;
-  e_surf_link_state_t state_initial_link = SURF_LINK_ON;
+  e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
   tmgr_trace_t state_trace;
-
+  DEBUG0("link_CM02");
   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);
+  bw_trace = tmgr_trace_new(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);
+  lat_trace = tmgr_trace_new(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");
+  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;
+    state_initial_link = SURF_RESOURCE_ON;
+  else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
+    state_initial_link = SURF_RESOURCE_OFF;
 
-  if (A_surfxml_link_sharing_policy ==
-      A_surfxml_link_sharing_policy_SHARED)
+  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());
-
-}
-
-static int src_id = -1;
-static int dst_id = -1;
+  else
+         {
+         if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FATPIPE)
+                 policy_initial_link = SURF_LINK_FATPIPE;
+         else if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FULLDUPLEX)
+                 policy_initial_link = SURF_LINK_FULLDUPLEX;
+         }
+
+  state_trace = tmgr_trace_new(A_surfxml_link_state_file);
+
+  if(policy_initial_link == SURF_LINK_FULLDUPLEX)
+  {
+         net_link_new(bprintf("%s_UP",name_link), bw_initial, bw_trace,
+                      lat_initial, lat_trace, state_initial_link, state_trace,
+                      policy_initial_link, xbt_dict_new());
+         net_link_new(bprintf("%s_DOWN",name_link), bw_initial, bw_trace,
+                      lat_initial, lat_trace, state_initial_link, state_trace,
+                      policy_initial_link, xbt_dict_new());
+  }
+  else
+  {
+         net_link_new(name_link, bw_initial, bw_trace,
+                      lat_initial, lat_trace, state_initial_link, state_trace,
+                      policy_initial_link, xbt_dict_new());
+  }
 
-static void parse_route_set_endpoints(void)
-{
-  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_set_route(void)
+static void net_create_resource(char *name,
+                                double bw_initial,
+                                tmgr_trace_t bw_trace,
+                                double lat_initial,
+                                tmgr_trace_t lat_trace,
+                                e_surf_resource_state_t
+                                state_initial,
+                                tmgr_trace_t state_trace,
+                                e_surf_link_sharing_policy_t policy,
+                                xbt_dict_t properties)
 {
-  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);    
-  }
+  net_link_new(name, bw_initial, bw_trace,
+               lat_initial, lat_trace, state_initial, state_trace,
+               policy, xbt_dict_new());
 }
 
-static void add_loopback(void)
-{
-  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 add_route(void)
+static void net_add_traces(void)
 {
-  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);
-   }
-}
+  char *trace_name, *elm;
 
-static void count_hosts(void)
-{
-   host_number++;
-}
+  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(surf_network_model->resource_set, elm);
+
+    xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
+                trace_name, elm);
+    xbt_assert2(trace,
+                "Cannot connect trace %s to link %s: trace undefined",
+                trace_name, elm);
+
+    link->lmm_resource.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(surf_network_model->resource_set, elm);
 
-static void add_traces(void) {
-   xbt_dict_cursor_t cursor=NULL;
-   char *trace_name,*elm;
-   
-   static int called = 0;
-   if (called) return;
-   called = 1;
+    xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
+                trace_name, elm);
+    xbt_assert2(trace,
+                "Cannot connect trace %s to link %s: trace undefined",
+                trace_name, elm);
 
-   /* 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);
-   }
+    link->lmm_resource.power.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);
-   }
-}
+  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(surf_network_model->resource_set, elm);
 
-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);
-}
+    xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
+                trace_name, elm);
+    xbt_assert2(trace,
+                "Cannot connect trace %s to link %s: trace undefined",
+                trace_name, elm);
 
-static void *name_service(const char *name)
-{
-  network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
-  return card;
+    link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
+  }
 }
 
-static const char *get_resource_name(void *resource_id)
+static void net_define_callbacks(const char *file)
 {
-  return ((network_card_CM02_t) resource_id)->name;
+  /* Figuring out the network links */
+  surfxml_add_callback(STag_surfxml_link_cb_list, &net_parse_link_init);
+  surfxml_add_callback(ETag_surfxml_platform_cb_list, &net_add_traces);
 }
 
-static int resource_used(void *resource_id)
+static int net_resource_used(void *resource_id)
 {
   return lmm_constraint_used(network_maxmin_system,
-                            ((link_CM02_t) resource_id)->
-                            constraint);
+                             ((surf_resource_lmm_t)
+                              resource_id)->constraint);
 }
 
-static int action_free(surf_action_t action)
+static int net_action_unref(surf_action_t action)
 {
-  action->refcount --;
-  if (!action->refcount ) {
+  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);
+                        ((surf_action_network_CM02_t) action)->variable);
+#ifdef HAVE_TRACING
+    xbt_free(((surf_action_network_CM02_t) action)->src_name);
+    xbt_free(((surf_action_network_CM02_t) action)->dst_name);
+    if (action->category)
+      xbt_free(action->category);
+#endif
     free(action);
     return 1;
   }
   return 0;
 }
 
-static void action_use(surf_action_t action)
+static void net_action_cancel(surf_action_t action)
 {
-  action->refcount ++;
+  surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 }
 
-static void action_cancel(surf_action_t action)
+void net_action_recycle(surf_action_t action)
 {
   return;
 }
 
-static void action_recycle(surf_action_t action)
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+int net_get_link_latency_limited(surf_action_t action)
 {
-  return;
+  return action->latency_limited;
 }
+#endif
 
-static void action_change_state(surf_action_t action,
-                               e_surf_action_state_t state)
+double net_action_get_remains(surf_action_t action)
 {
-/*   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;
+  return action->remains;
 }
 
-static double share_resources(double now)
+static double net_share_resources(double now)
 {
   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;
+      surf_network_model->states.running_action_set;
   double min;
 
   min = generic_maxmin_share_resources(running_actions,
-                                      xbt_swag_offset(s_action,
-                                                      variable),
-                                      network_maxmin_system,
-                                      network_solve);
+                                       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) {
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+    if (lmm_is_variable_limited_by_latency(action->variable)) {
+      (action->generic_action).latency_limited = 1;
+    } else {
+      (action->generic_action).latency_limited = 0;
+    }
+#endif
     if (action->latency > 0) {
       if (min < 0)
-       min = action->latency;
+        min = action->latency;
       else if (action->latency < min)
-       min = action->latency;
+        min = action->latency;
     }
   }
 
   return min;
 }
 
-static void update_actions_state(double now, double delta)
+static void net_update_actions_state(double now, double delta)
 {
   double deltap = 0.0;
   surf_action_network_CM02_t action = NULL;
   surf_action_network_CM02_t next_action = NULL;
   xbt_swag_t running_actions =
-      surf_network_model->common_public->states.running_action_set;
+      surf_network_model->states.running_action_set;
   /*
      xbt_swag_t failed_actions =
-     surf_network_model->common_public->states.failed_action_set;
+     surf_network_model->states.failed_action_set;
    */
 
   xbt_swag_foreach_safe(action, next_action, running_actions) {
     deltap = delta;
     if (action->latency > 0) {
       if (action->latency > deltap) {
-       double_update(&(action->latency), deltap);
-       deltap = 0.0;
+        double_update(&(action->latency), deltap);
+        deltap = 0.0;
       } else {
-       double_update(&(deltap), action->latency);
-       action->latency = 0.0;
+        double_update(&(deltap), action->latency);
+        action->latency = 0.0;
       }
       if ((action->latency == 0.0) && !(action->suspended))
-       lmm_update_variable_weight(network_maxmin_system, action->variable,
-                                  action->weight);
+        lmm_update_variable_weight(network_maxmin_system, action->variable,
+                                   action->weight);
+    }
+#ifdef HAVE_TRACING
+    xbt_dynar_t route =
+        global_routing->get_route(action->src_name, action->dst_name);
+    link_CM02_t link;
+    unsigned int i;
+    xbt_dynar_foreach(route, i, link) {
+      TRACE_surf_link_set_utilization(link,
+                                      action->generic_action.data,
+                                      (surf_action_t) action,
+                                      lmm_variable_getvalue
+                                      (action->variable), now - delta,
+                                      delta);
+    }
+#endif
+    if(!lmm_get_number_of_cnst_from_var(network_maxmin_system, action->variable)) {
+                               /* There is actually no link used, hence an infinite bandwidth.
+                                * This happens often when using models like vivaldi.
+                                * In such case, just make sure that the action completes immediately.
+                                */
+       double_update(&(action->generic_action.remains),
+                       action->generic_action.remains);
     }
     double_update(&(action->generic_action.remains),
-                 lmm_variable_getvalue(action->variable) * deltap);
+                  lmm_variable_getvalue(action->variable) * deltap);
     if (action->generic_action.max_duration != NO_MAX_DURATION)
       double_update(&(action->generic_action.max_duration), delta);
 
     if ((action->generic_action.remains <= 0) &&
-       (lmm_get_variable_weight(action->variable) > 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)) {
+      surf_network_model->action_state_set((surf_action_t) action,
+                                           SURF_ACTION_DONE);
+      gap_remove(action);
+    } 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);
+      surf_network_model->action_state_set((surf_action_t) action,
+                                           SURF_ACTION_DONE);
+      gap_remove(action);
     }
   }
 
   return;
 }
 
-static void update_resource_state(void *id,
-                                 tmgr_trace_event_t event_type,
-                                 double value, double date)
+static void net_update_resource_state(void *id,
+                                      tmgr_trace_event_t event_type,
+                                      double value, double date)
 {
   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); */
 
-  if (event_type == nw_link->bw_event) {
-    double delta = weight_S_parameter/value - weight_S_parameter/nw_link->bw_current;
+  if (event_type == nw_link->lmm_resource.power.event) {
+    double delta =
+        sg_weight_S_parameter / value - sg_weight_S_parameter /
+        (nw_link->lmm_resource.power.peak *
+         nw_link->lmm_resource.power.scale);
     lmm_variable_t var = NULL;
     lmm_element_t elem = NULL;
     surf_action_network_CM02_t action = NULL;
 
-    nw_link->bw_current = value;
-    lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
-                               bandwidth_factor*nw_link->bw_current);
-    if(weight_S_parameter>0) {
-      while ((var= lmm_get_var_from_cnst
-             (network_maxmin_system, nw_link->constraint, &elem))) {
-       action = lmm_variable_id(var);
-       action->weight += delta;
-       if (!(action->suspended))
-         lmm_update_variable_weight(network_maxmin_system, action->variable,
-                                    action->weight);
+    nw_link->lmm_resource.power.peak = value;
+    lmm_update_constraint_bound(network_maxmin_system,
+                                nw_link->lmm_resource.constraint,
+                                sg_bandwidth_factor *
+                                (nw_link->lmm_resource.power.peak *
+                                 nw_link->lmm_resource.power.scale));
+#ifdef HAVE_TRACING
+    TRACE_surf_link_set_bandwidth(date, nw_link,
+                                  sg_bandwidth_factor *
+                                  (nw_link->lmm_resource.power.peak *
+                                   nw_link->lmm_resource.power.scale));
+#endif
+    if (sg_weight_S_parameter > 0) {
+      while ((var = lmm_get_var_from_cnst
+              (network_maxmin_system, nw_link->lmm_resource.constraint,
+               &elem))) {
+        action = lmm_variable_id(var);
+        action->weight += delta;
+        if (!(action->suspended))
+          lmm_update_variable_weight(network_maxmin_system,
+                                     action->variable, action->weight);
       }
     }
+    if (tmgr_trace_event_free(event_type))
+      nw_link->lmm_resource.power.event = NULL;
   } else if (event_type == nw_link->lat_event) {
     double delta = value - nw_link->lat_current;
     lmm_variable_t var = NULL;
@@ -460,47 +531,58 @@ static void update_resource_state(void *id,
     surf_action_network_CM02_t action = NULL;
 
     nw_link->lat_current = value;
-    while ((var= lmm_get_var_from_cnst
-          (network_maxmin_system, nw_link->constraint, &elem))) {
+    while ((var = lmm_get_var_from_cnst
+            (network_maxmin_system, nw_link->lmm_resource.constraint,
+             &elem))) {
       action = lmm_variable_id(var);
       action->lat_current += delta;
       action->weight += delta;
       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)));
+        lmm_update_variable_bound(network_maxmin_system, action->variable,
+                                  sg_tcp_gamma / (2.0 *
+                                                  action->lat_current));
+      else {
+        lmm_update_variable_bound(network_maxmin_system, action->variable,
+                                  min(action->rate,
+                                      sg_tcp_gamma / (2.0 *
+                                                      action->lat_current)));
+
+        if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
+          INFO0("Flow is limited BYBANDWIDTH");
+        } else {
+          INFO1("Flow is limited BYLATENCY, latency of flow is %f",
+                action->lat_current);
+        }
+      }
       if (!(action->suspended))
-       lmm_update_variable_weight(network_maxmin_system, action->variable,
-                                  action->weight);
+        lmm_update_variable_weight(network_maxmin_system, action->variable,
+                                   action->weight);
 
     }
-  } else if (event_type == nw_link->state_event) {
+    if (tmgr_trace_event_free(event_type))
+      nw_link->lat_event = NULL;
+  } else if (event_type == nw_link->lmm_resource.state_event) {
     if (value > 0)
-      nw_link->state_current = SURF_LINK_ON;
+      nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
     else {
-      lmm_constraint_t cnst = nw_link->constraint;
+      lmm_constraint_t cnst = nw_link->lmm_resource.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) ;
+      nw_link->lmm_resource.state_current = SURF_RESOURCE_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);
-       }
+        if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
+            surf_action_state_get(action) == SURF_ACTION_READY) {
+          action->finish = date;
+          surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
+        }
       }
     }
+    if (tmgr_trace_event_free(event_type))
+      nw_link->lmm_resource.state_event = NULL;
   } else {
     CRITICAL0("Unknown event ! \n");
     xbt_abort();
@@ -509,282 +591,303 @@ 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 net_communicate(const char *src_name,
+                                     const char *dst_name, double size,
+                                     double rate)
 {
+  unsigned int i;
+  link_CM02_t link;
+  int failed = 0;
   surf_action_network_CM02_t action = NULL;
+  double bandwidth_bound;
+  double latency=0.0;
   /* 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);
-  link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
+
+  xbt_dynar_t back_route = NULL;
+  int constraints_per_variable = 0;
+  // I will need this route for some time so let's call get_route_no_cleanup
+  xbt_dynar_t route = global_routing->get_route_no_cleanup(src_name, dst_name);
+
+
+  if (sg_network_fullduplex == 1) {
+    back_route = global_routing->get_route(dst_name, src_name);
+  }
+
   /* LARGE PLATFORMS HACK:
      total_route_size = route_size + src->link_nb + dst->nb */
-  int i;
 
-  XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
+  XBT_IN4("(%s,%s,%g,%g)", src_name, 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 = surf_get_clock();
-  action->generic_action.finish = -1.0;
-  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_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;
+  latency = global_routing->get_latency(src_name,dst_name);
+  xbt_assert2(xbt_dynar_length(route) || latency,
+              "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
+              src_name, dst_name);
+
+  xbt_dynar_foreach(route, i, link) {
+    if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
+      failed = 1;
       break;
     }
-  
+  }
+  action =
+      surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
+                      surf_network_model, failed);
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+  (action->generic_action).latency_limited = 0;
+#endif
+  action->weight = action->latency = latency;
+
   xbt_swag_insert(action, action->generic_action.state_set);
   action->rate = rate;
 
-  action->latency = 0.0;
-  action->weight = 0.0;
-  for (i = 0; i < route_size; i++) {
-    action->latency += route[i]->lat_current;
-    action->weight += route[i]->lat_current + weight_S_parameter/route[i]->bw_current;
+  bandwidth_bound = -1.0;
+
+  xbt_dynar_foreach(route, i, link) {
+    action->weight +=
+        sg_weight_S_parameter /
+        (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
+    if (bandwidth_bound < 0.0)
+      bandwidth_bound =
+          (*bandwidth_factor_callback) (size) *
+          (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
+    else
+      bandwidth_bound =
+          min(bandwidth_bound,
+              (*bandwidth_factor_callback) (size) *
+              (link->lmm_resource.power.peak *
+               link->lmm_resource.power.scale));
   }
   /* LARGE PLATFORMS HACK:
      Add src->link and dst->link latencies */
   action->lat_current = action->latency;
-  action->latency *= latency_factor;
+  action->latency *= (*latency_factor_callback) (size);
+  action->rate =
+      (*bandwidth_constraint_callback) (action->rate, bandwidth_bound,
+                                        size);
+
+  if(xbt_dynar_length(route) > 0) {
+    link = *(link_CM02_t*)xbt_dynar_get_ptr(route, 0);
+    gap_append(size, link, action);
+    DEBUG5("Comm %p: %s -> %s gap=%f (lat=%f)",
+           action, src_name, dst_name, action->sender.gap, action->latency);
+  } else {
+    gap_unknown(action);
+  }
+
 
   /* LARGE PLATFORMS HACK:
-     lmm_variable_new(..., total_route_size)*/
+     lmm_variable_new(..., total_route_size) */
+  if (back_route != NULL) {
+    constraints_per_variable =
+        xbt_dynar_length(route) + xbt_dynar_length(back_route);
+  } else {
+    constraints_per_variable = xbt_dynar_length(route);
+  }
+
   if (action->latency > 0)
     action->variable =
-       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
-                        route_size);
+        lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
+                         constraints_per_variable);
   else
     action->variable =
-       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
-                        route_size);
+        lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
+                         constraints_per_variable);
 
   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));
+                                sg_tcp_gamma / (2.0 *
+                                                action->lat_current));
     else
       lmm_update_variable_bound(network_maxmin_system, action->variable,
-                               -1.0);
+                                -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)));
+                                min(action->rate,
+                                    sg_tcp_gamma / (2.0 *
+                                                    action->lat_current)));
     else
       lmm_update_variable_bound(network_maxmin_system, action->variable,
-                               action->rate);
+                                action->rate);
   }
 
-  for (i = 0; i < route_size; i++)
-    lmm_expand(network_maxmin_system, route[i]->constraint,
-              action->variable, 1.0);
+  xbt_dynar_foreach(route, i, link) {
+    lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
+               action->variable, 1.0);
+  }
+
+  if (sg_network_fullduplex == 1) {
+    DEBUG1("Fullduplex active adding backward flow using 5%c", '%');
+    xbt_dynar_foreach(back_route, i, link) {
+      lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
+                 action->variable, .05);
+    }
+  }
   /* LARGE PLATFORMS HACK:
      expand also with src->link and dst->link */
+#ifdef HAVE_TRACING
+  action->src_name = xbt_new(char, strlen(src_name) + 1);
+  strncpy(action->src_name, src_name, strlen(src_name) + 1);
+
+  action->dst_name = xbt_new(char, strlen(dst_name) + 1);
+  strncpy(action->dst_name, dst_name, strlen(dst_name) + 1);
+#endif
 
+  xbt_dynar_free(&route);
   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)
+static xbt_dynar_t net_get_route(const char *src, const char *dst)
 {
-  network_card_CM02_t card_src = src;
-  network_card_CM02_t card_dst = dst;
-  return ROUTE_SIZE(card_src->id, card_dst->id);
+  return global_routing->get_route(src, dst);
 }
 
-static const char *get_link_name(const void *link)
+static double net_get_link_bandwidth(const void *link)
 {
-  return ((link_CM02_t) link)->name;
+  surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
+  return lmm->power.peak * lmm->power.scale;
 }
 
-static double get_link_bandwidth(const void *link)
-{
-  return ((link_CM02_t) link)->bw_current;
-}
-
-static double get_link_latency(const void *link)
+static double net_get_link_latency(const void *link)
 {
   return ((link_CM02_t) link)->lat_current;
 }
 
-static int link_shared(const void *link)
+static int net_link_shared(const void *link)
 {
-  return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
+  return
+      lmm_constraint_is_shared(((surf_resource_lmm_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)
+static void net_action_suspend(surf_action_t action)
 {
   ((surf_action_network_CM02_t) action)->suspended = 1;
   lmm_update_variable_weight(network_maxmin_system,
-                            ((surf_action_network_CM02_t) action)->
-                            variable, 0.0);
+                             ((surf_action_network_CM02_t)
+                              action)->variable, 0.0);
 }
 
-static void action_resume(surf_action_t action)
+static void net_action_resume(surf_action_t action)
 {
   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)->
-                              weight);
+                               ((surf_action_network_CM02_t)
+                                action)->variable,
+                               ((surf_action_network_CM02_t)
+                                action)->weight);
     ((surf_action_network_CM02_t) action)->suspended = 0;
   }
 }
 
-static int action_is_suspended(surf_action_t action)
+static int net_action_is_suspended(surf_action_t action)
 {
   return ((surf_action_network_CM02_t) action)->suspended;
 }
 
-static void action_set_max_duration(surf_action_t action, double duration)
+void net_action_set_max_duration(surf_action_t action, double duration)
 {
   action->max_duration = duration;
 }
 
-static void finalize(void)
+#ifdef HAVE_TRACING
+static void net_action_set_category(surf_action_t action, const char *category)
 {
-  int i, j;
-
-  xbt_dict_free(&network_card_set);
-  xbt_dict_free(&link_set);
-  xbt_swag_free(surf_network_model->common_public->states.
-               ready_action_set);
-  xbt_swag_free(surf_network_model->common_public->states.
-               running_action_set);
-  xbt_swag_free(surf_network_model->common_public->states.
-               failed_action_set);
-  xbt_swag_free(surf_network_model->common_public->states.
-               done_action_set);
-  free(surf_network_model->common_public);
-  free(surf_network_model->common_private);
-  free(surf_network_model->extension_public);
+  action->category = xbt_strdup (category);
+}
+#endif
 
-  free(surf_network_model);
+static void net_finalize(void)
+{
+  surf_model_exit(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;
-  free(routing_table_size);
-  routing_table_size = NULL;
-  host_number = 0;
+  global_routing->finalize();
+
   lmm_system_free(network_maxmin_system);
   network_maxmin_system = NULL;
 }
 
 static void surf_network_model_init_internal(void)
 {
-  s_surf_action_t action;
-
-  surf_network_model = xbt_new0(s_surf_network_model_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_model->common_public->states.ready_action_set =
-      xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_network_model->common_public->states.running_action_set =
-      xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_network_model->common_public->states.failed_action_set =
-      xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_network_model->common_public->states.done_action_set =
-      xbt_swag_new(xbt_swag_offset(action, state_hookup));
-
-  surf_network_model->common_public->name_service = name_service;
-  surf_network_model->common_public->get_resource_name =
-      get_resource_name;
-  surf_network_model->common_public->action_get_state =
-      surf_action_get_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_model->common_public->action_set_data =
-      surf_action_set_data;
-  surf_network_model->common_public->name = "network";
-
-  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_model->common_private->update_resource_state =
-      update_resource_state;
-  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();
+  surf_network_model = surf_model_init();
+
+  surf_network_model->name = "network";
+  surf_network_model->action_unref = net_action_unref;
+  surf_network_model->action_cancel = net_action_cancel;
+  surf_network_model->action_recycle = net_action_recycle;
+  surf_network_model->get_remains = net_action_get_remains;
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+  surf_network_model->get_latency_limited = net_get_link_latency_limited;
+#endif
+
+  surf_network_model->model_private->resource_used = net_resource_used;
+  surf_network_model->model_private->share_resources = net_share_resources;
+  surf_network_model->model_private->update_actions_state =
+      net_update_actions_state;
+  surf_network_model->model_private->update_resource_state =
+      net_update_resource_state;
+  surf_network_model->model_private->finalize = net_finalize;
+
+  surf_network_model->suspend = net_action_suspend;
+  surf_network_model->resume = net_action_resume;
+  surf_network_model->is_suspended = net_action_is_suspended;
+  surf_network_model->set_max_duration = net_action_set_max_duration;
+#ifdef HAVE_TRACING
+  surf_network_model->set_category = net_action_set_category;
+#endif
+
+  surf_network_model->extension.network.communicate = net_communicate;
+  surf_network_model->extension.network.get_route = net_get_route;
+  surf_network_model->extension.network.get_link_bandwidth =
+      net_get_link_bandwidth;
+  surf_network_model->extension.network.get_link_latency =
+      net_get_link_latency;
+  surf_network_model->extension.network.link_shared = net_link_shared;
+  surf_network_model->extension.network.add_traces = net_add_traces;
+  surf_network_model->extension.network.create_resource =
+      net_create_resource;
 
   if (!network_maxmin_system)
     network_maxmin_system = lmm_system_new();
+
+  routing_model_create(sizeof(link_CM02_t),
+                       net_link_new(xbt_strdup("__loopback__"),
+                                    498000000, NULL, 0.000015, NULL,
+                                    SURF_RESOURCE_ON, NULL,
+                                    SURF_LINK_FATPIPE, NULL),
+                      net_get_link_latency);
+}
+
+
+
+/************************************************************************/
+/* New model based on LV08 and experimental results of MPI ping-pongs   */
+/************************************************************************/
+void surf_network_model_init_SMPI(const char *filename)
+{
+
+  if (surf_network_model)
+    return;
+  surf_network_model_init_internal();
+  latency_factor_callback = &smpi_latency_factor;
+  bandwidth_factor_callback = &smpi_bandwidth_factor;
+  bandwidth_constraint_callback = &smpi_bandwidth_constraint;
+  net_define_callbacks(filename);
+  xbt_dynar_push(model_list, &surf_network_model);
+  network_solve = lmm_solve;
+
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
+
+  update_model_description(surf_network_model_description,
+                           "SMPI", surf_network_model);
 }
 
 /************************************************************************/
@@ -796,17 +899,17 @@ void surf_network_model_init_LegrandVelho(const char *filename)
   if (surf_network_model)
     return;
   surf_network_model_init_internal();
-  define_callbacks(filename);
+  net_define_callbacks(filename);
   xbt_dynar_push(model_list, &surf_network_model);
   network_solve = lmm_solve;
 
-  latency_factor = 10.4;
-  bandwidth_factor = 0.92;
-  weight_S_parameter = 8775;
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
+                            0.92);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
 
   update_model_description(surf_network_model_description,
-                          "LegrandVelho",
-                          (surf_model_t) surf_network_model);
+                           "LV08", surf_network_model);
 }
 
 /***************************************************************************/
@@ -826,13 +929,12 @@ void surf_network_model_init_CM02(const char *filename)
   if (surf_network_model)
     return;
   surf_network_model_init_internal();
-  define_callbacks(filename);
+  net_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);
+                           "CM02", surf_network_model);
 }
 
 void surf_network_model_init_Reno(const char *filename)
@@ -840,20 +942,20 @@ void surf_network_model_init_Reno(const char *filename)
   if (surf_network_model)
     return;
   surf_network_model_init_internal();
-  define_callbacks(filename);
+  net_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);
+                                    func_reno_fpi);
   network_solve = lagrange_solve;
 
-  latency_factor = 10.4;
-  bandwidth_factor = 0.92;
-  weight_S_parameter = 8775;
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
+                            0.92);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
 
   update_model_description(surf_network_model_description,
-                          "Reno",
-                          (surf_model_t) surf_network_model);
+                           "Reno", surf_network_model);
 }
 
 
@@ -862,20 +964,21 @@ void surf_network_model_init_Reno2(const char *filename)
   if (surf_network_model)
     return;
   surf_network_model_init_internal();
-  define_callbacks(filename);
+  net_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);
+                                    func_reno2_fpi);
   network_solve = lagrange_solve;
 
-  latency_factor = 10.4;
-  bandwidth_factor = 0.92;
-  weight_S_parameter = 8775;
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
+                            0.92);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
+                            8775);
 
   update_model_description(surf_network_model_description,
-                          "Reno2",
-                          (surf_model_t) surf_network_model);
+                           "Reno2", surf_network_model);
 }
 
 void surf_network_model_init_Vegas(const char *filename)
@@ -883,35 +986,18 @@ void surf_network_model_init_Vegas(const char *filename)
   if (surf_network_model)
     return;
   surf_network_model_init_internal();
-  define_callbacks(filename);
+  net_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);
+                                    func_vegas_fpi);
   network_solve = lagrange_solve;
 
-  latency_factor = 10.4;
-  bandwidth_factor = 0.92;
-  weight_S_parameter = 8775;
-
-  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;
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
+                            0.92);
+  xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
 
   update_model_description(surf_network_model_description,
-                          "SDP",
-                          (surf_model_t) surf_network_model);
+                           "Vegas", surf_network_model);
 }
-#endif