X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8c354c48ec90c997cc7213ce96ca97d882934166..6761e997f501c19abb9cf5329733d556b1dfcfd8:/src/surf/cpu.c

diff --git a/src/surf/cpu.c b/src/surf/cpu.c
index 0fa4303209..0568742ee2 100644
--- a/src/surf/cpu.c
+++ b/src/surf/cpu.c
@@ -6,55 +6,45 @@
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "cpu_private.h"
-#include "xbt/dict.h"
 
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(cpu, surf,
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu, surf,
 				"Logging specific to the SURF CPU module");
 
-surf_cpu_resource_t surf_cpu_resource = NULL;
+surf_cpu_model_t surf_cpu_model = NULL;
+lmm_system_t cpu_maxmin_system = NULL;
 
-static xbt_dict_t cpu_set = NULL;
+xbt_dict_t cpu_set = NULL;
 
-static void cpu_free(void *CPU)
+static void cpu_free(void *cpu)
 {
-/*   cpu_t cpu = CPU; */
-/* lmm_constraint_free(maxmin_system,cpu->constraint); */
-/* Clean somewhere else ! */
-
-  xbt_free(CPU);
+  free(((cpu_Cas01_t) cpu)->name);
+  free(cpu);
 }
 
-/* power_scale is the basic power of the cpu when the cpu is
-   completely available. power_initial is therefore expected to be
-   comprised between 0.0 and 1.0, just as the values of power_trace.
-   state_trace values mean SURF_CPU_ON if >0 and SURF_CPU_OFF
-   otherwise.
-*/
-static cpu_t cpu_new(const char *name, xbt_maxmin_float_t power_scale,
-		     xbt_maxmin_float_t power_initial,
-		     tmgr_trace_t power_trace,
-		     e_surf_cpu_state_t state_initial,
-		     tmgr_trace_t state_trace)
+static cpu_Cas01_t cpu_new(char *name, double power_scale,
+			   double power_initial,
+			   tmgr_trace_t power_trace,
+			   e_surf_cpu_state_t state_initial,
+			   tmgr_trace_t state_trace)
 {
-  cpu_t cpu = xbt_new0(s_cpu_t, 1);
+  cpu_Cas01_t cpu = xbt_new0(s_cpu_Cas01_t, 1);
 
-  cpu->resource = (surf_resource_t) surf_cpu_resource;
+  cpu->model = (surf_model_t) surf_cpu_model;
   cpu->name = name;
   cpu->power_scale = power_scale;
+  xbt_assert0(cpu->power_scale > 0, "Power has to be >0");
   cpu->power_current = power_initial;
-/*   cpu->power_trace = power_trace; */
   if (power_trace)
     cpu->power_event =
 	tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
 
   cpu->state_current = state_initial;
-/*   cpu->state_trace = state_trace; */
   if (state_trace)
     cpu->state_event =
 	tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
 
   cpu->constraint =
-      lmm_constraint_new(maxmin_system, cpu,
+      lmm_constraint_new(cpu_maxmin_system, cpu,
 			 cpu->power_current * cpu->power_scale);
 
   xbt_dict_set(cpu_set, name, cpu, cpu_free);
@@ -62,43 +52,28 @@ static cpu_t cpu_new(const char *name, xbt_maxmin_float_t power_scale,
   return cpu;
 }
 
-/*  
-   Semantic:  name       scale     initial     power     initial     state
-                                    power      trace      state      trace
-   
-   Token:   TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD
-   Type:     string      float      float      string     ON/OFF     string
-*/
-
 static void parse_cpu(void)
 {
-  e_surf_token_t token;
   char *name = NULL;
-  xbt_maxmin_float_t power_scale = 0.0;
-  xbt_maxmin_float_t power_initial = 0.0;
-  tmgr_trace_t power_trace = NULL;;
+  double power_scale = 0.0;
+  double power_initial = 0.0;
+  tmgr_trace_t power_trace = NULL;
   e_surf_cpu_state_t state_initial = SURF_CPU_OFF;
   tmgr_trace_t state_trace = NULL;
 
-  name = xbt_strdup(surf_parse_text);
+  name = xbt_strdup(A_surfxml_cpu_name);
+  surf_parse_get_double(&power_scale, A_surfxml_cpu_power);
+  surf_parse_get_double(&power_initial, A_surfxml_cpu_availability);
+  surf_parse_get_trace(&power_trace, A_surfxml_cpu_availability_file);
 
-  surf_parse_float(&power_scale);
-  surf_parse_float(&power_initial);
-  surf_parse_trace(&power_trace);
-
-  token = surf_parse();		/* state_initial */
-  xbt_assert1((token == TOKEN_WORD), "Parse error line %d", line_pos);
-  if (strcmp(surf_parse_text, "ON") == 0)
+  xbt_assert0((A_surfxml_cpu_state == A_surfxml_cpu_state_ON) ||
+	      (A_surfxml_cpu_state == A_surfxml_cpu_state_OFF),
+	      "Invalid state");
+  if (A_surfxml_cpu_state == A_surfxml_cpu_state_ON)
     state_initial = SURF_CPU_ON;
-  else if (strcmp(surf_parse_text, "OFF") == 0)
+  if (A_surfxml_cpu_state == A_surfxml_cpu_state_OFF)
     state_initial = SURF_CPU_OFF;
-  else {
-    CRITICAL2("Invalid cpu state (line %d): %s neq ON or OFF\n", line_pos,
-	      surf_parse_text);
-    xbt_abort();
-  }
-
-  surf_parse_trace(&state_trace);
+  surf_parse_get_trace(&state_trace, A_surfxml_cpu_state_file);
 
   cpu_new(name, power_scale, power_initial, power_trace, state_initial,
 	  state_trace);
@@ -106,128 +81,116 @@ static void parse_cpu(void)
 
 static void parse_file(const char *file)
 {
-  e_surf_token_t token;
-
-  find_section(file, "CPU");
-
-  while (1) {
-    token = surf_parse();
-
-    if (token == TOKEN_END_SECTION)
-      break;
-    if (token == TOKEN_NEWLINE)
-      continue;
-
-    if (token == TOKEN_WORD)
-      parse_cpu();
-    else {
-      CRITICAL1("Parse error line %d\n", line_pos);
-      xbt_abort();
-    }
-  }
-
-  close_section("CPU");
+  surf_parse_reset_parser();
+  ETag_surfxml_cpu_fun = parse_cpu;
+  surf_parse_open(file);
+  xbt_assert1((!surf_parse()), "Parse error in %s", file);
+  surf_parse_close();
 }
 
 static void *name_service(const char *name)
 {
-  void *cpu = NULL;
-
-  xbt_dict_get(cpu_set, name, &cpu);
-
-  return cpu;
+  return xbt_dict_get_or_null(cpu_set, name);
 }
 
-static const char *get_resource_name(void *resource_id)
+static const char *get_model_name(void *model_id)
 {
-  return ((cpu_t) resource_id)->name;
+  return ((cpu_Cas01_t) model_id)->name;
 }
 
-static int resource_used(void *resource_id)
+static int model_used(void *model_id)
 {
-  return lmm_constraint_used(maxmin_system,
-			     ((cpu_t) resource_id)->constraint);
+  return lmm_constraint_used(cpu_maxmin_system,
+			     ((cpu_Cas01_t) model_id)->constraint);
 }
 
-static void action_free(surf_action_t action)
+static int action_free(surf_action_t action)
 {
-  surf_action_cpu_t Action = (surf_action_cpu_t) action;
-
-  xbt_swag_remove(action, action->state_set);
-  lmm_variable_free(maxmin_system, Action->variable);
-  xbt_free(action);
+  action->using--;
+  if (!action->using) {
+    xbt_swag_remove(action, action->state_set);
+    if (((surf_action_cpu_Cas01_t) action)->variable)
+      lmm_variable_free(cpu_maxmin_system,
+			((surf_action_cpu_Cas01_t) action)->variable);
+    free(action);
+    return 1;
+  }
+  return 0;
+}
 
-  return;
+static void action_use(surf_action_t action)
+{
+  action->using++;
 }
 
 static void action_cancel(surf_action_t action)
 {
+  surf_action_change_state(action, SURF_ACTION_FAILED);
   return;
 }
 
 static void action_recycle(surf_action_t action)
 {
-  return;
+  DIE_IMPOSSIBLE;
 }
 
 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_cpu_Cas01_t)action)->variable) { */
+/*       lmm_variable_disable(cpu_maxmin_system, ((surf_action_cpu_Cas01_t)action)->variable); */
+/*       ((surf_action_cpu_Cas01_t)action)->variable = NULL; */
+/*     } */
+
   surf_action_change_state(action, state);
   return;
 }
 
-static xbt_heap_float_t share_resources(xbt_heap_float_t now)
+static double share_models(double now)
 {
-  surf_action_cpu_t action = NULL;
-  xbt_swag_t running_actions =
-      surf_cpu_resource->common_public->states.running_action_set;
-  xbt_maxmin_float_t min = -1;
-  xbt_maxmin_float_t value = -1;
-  lmm_solve(maxmin_system);
-
-  action = xbt_swag_getFirst(running_actions);
-  if (!action)
-    return -1.0;
-  value = lmm_variable_getvalue(action->variable);
-  min = action->generic_action.remains / value;
-
-  xbt_swag_foreach(action, running_actions) {
-    value = action->generic_action.remains /
-	lmm_variable_getvalue(action->variable);
-    if (value < min)
-      min = value;
-  }
-
-  return min;
+  s_surf_action_cpu_Cas01_t action;
+  return generic_maxmin_share_models2(surf_cpu_model->common_public->
+					 states.running_action_set,
+					 xbt_swag_offset(action, variable),
+					 cpu_maxmin_system, lmm_solve);
 }
 
-static void update_actions_state(xbt_heap_float_t now,
-				 xbt_heap_float_t delta)
+static void update_actions_state(double now, double delta)
 {
-  surf_action_cpu_t action = NULL;
-  surf_action_cpu_t next_action = NULL;
+  surf_action_cpu_Cas01_t action = NULL;
+  surf_action_cpu_Cas01_t next_action = NULL;
   xbt_swag_t running_actions =
-      surf_cpu_resource->common_public->states.running_action_set;
-  xbt_swag_t failed_actions =
-      surf_cpu_resource->common_public->states.failed_action_set;
+      surf_cpu_model->common_public->states.running_action_set;
+  /* FIXME: UNUSED
+     xbt_swag_t failed_actions =
+     surf_cpu_model->common_public->states.failed_action_set;
+   */
 
   xbt_swag_foreach_safe(action, next_action, running_actions) {
-    action->generic_action.remains -=
-	lmm_variable_getvalue(action->variable) * delta;
-/*     if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
-    if (action->generic_action.remains <= 0) {
+    double_update(&(action->generic_action.remains),
+		  lmm_variable_getvalue(action->variable) * delta);
+    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)) {
+      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 */
+    } else {			/* Need to check that none of the model has failed */
       lmm_constraint_t cnst = NULL;
       int i = 0;
-      cpu_t cpu = NULL;
+      cpu_Cas01_t cpu = NULL;
 
       while ((cnst =
-	      lmm_get_cnst_from_var(maxmin_system, action->variable,
+	      lmm_get_cnst_from_var(cpu_maxmin_system, action->variable,
 				    i++))) {
 	cpu = lmm_constraint_id(cnst);
 	if (cpu->state_current == SURF_CPU_OFF) {
+	  action->generic_action.finish = surf_get_clock();
 	  action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 	  break;
 	}
@@ -235,26 +198,18 @@ static void update_actions_state(xbt_heap_float_t now,
     }
   }
 
-  xbt_swag_foreach_safe(action, next_action, failed_actions) {
-    lmm_variable_disable(maxmin_system, action->variable);
-  }
-
   return;
 }
 
-static void update_resource_state(void *id,
+static void update_model_state(void *id,
 				  tmgr_trace_event_t event_type,
-				  xbt_maxmin_float_t value)
+				  double value)
 {
-  cpu_t cpu = id;
-
-/*   printf("[" XBT_HEAP_FLOAT_T "] Asking to update CPU \"%s\" with value " */
-/* 	 XBT_MAXMIN_FLOAT_T " for event %p\n", surf_get_clock(), cpu->name, */
-/* 	 value, event_type); */
+  cpu_Cas01_t cpu = id;
 
   if (event_type == cpu->power_event) {
     cpu->power_current = value;
-    lmm_update_constraint_bound(maxmin_system,cpu->constraint,
+    lmm_update_constraint_bound(cpu_maxmin_system, cpu->constraint,
 				cpu->power_current * cpu->power_scale);
   } else if (event_type == cpu->state_event) {
     if (value > 0)
@@ -269,110 +224,220 @@ static void update_resource_state(void *id,
   return;
 }
 
-static surf_action_t execute(void *cpu, xbt_maxmin_float_t size)
+static surf_action_t execute(void *cpu, double size)
 {
-  surf_action_cpu_t action = NULL;
-  cpu_t CPU = cpu;
+  surf_action_cpu_Cas01_t action = NULL;
+  cpu_Cas01_t CPU = cpu;
 
-  action = xbt_new0(s_surf_action_cpu_t, 1);
+  XBT_IN2("(%s,%g)", CPU->name, size);
+  action = xbt_new0(s_surf_action_cpu_Cas01_t, 1);
 
+  action->generic_action.using = 1;
   action->generic_action.cost = size;
   action->generic_action.remains = size;
-  action->generic_action.start = -1.0;
+  action->generic_action.priority = 1.0;
+  action->generic_action.max_duration = NO_MAX_DURATION;
+  action->generic_action.start = surf_get_clock();
   action->generic_action.finish = -1.0;
-/*   action->generic_action.callback = cpu; */
-  action->generic_action.callback = NULL;
-  action->generic_action.resource_type =
-      (surf_resource_t) surf_cpu_resource;
+  action->generic_action.model_type =
+      (surf_model_t) surf_cpu_model;
+  action->suspended = 0;	/* Should be useless because of the 
+				   calloc but it seems to help valgrind... */
 
   if (CPU->state_current == SURF_CPU_ON)
     action->generic_action.state_set =
-	surf_cpu_resource->common_public->states.running_action_set;
+	surf_cpu_model->common_public->states.running_action_set;
   else
     action->generic_action.state_set =
-	surf_cpu_resource->common_public->states.failed_action_set;
+	surf_cpu_model->common_public->states.failed_action_set;
   xbt_swag_insert(action, action->generic_action.state_set);
 
-  action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0, 1);
-  lmm_expand(maxmin_system, ((cpu_t) cpu)->constraint, action->variable,
-	     1.0);
+  action->variable = lmm_variable_new(cpu_maxmin_system, action,
+				      action->generic_action.priority,
+				      -1.0, 1);
+  lmm_expand(cpu_maxmin_system, CPU->constraint, action->variable, 1.0);
+  XBT_OUT;
+  return (surf_action_t) action;
+}
 
+static surf_action_t action_sleep(void *cpu, double duration)
+{
+  surf_action_cpu_Cas01_t action = NULL;
+
+  XBT_IN2("(%s,%g)", ((cpu_Cas01_t) cpu)->name, duration);
+  action = (surf_action_cpu_Cas01_t) execute(cpu, 1.0);
+  action->generic_action.max_duration = duration;
+  action->suspended = 2;
+  lmm_update_variable_weight(cpu_maxmin_system, action->variable, 0.0);
+  XBT_OUT;
   return (surf_action_t) action;
 }
 
+static void action_suspend(surf_action_t action)
+{
+  XBT_IN1("(%p)", action);
+  if (((surf_action_cpu_Cas01_t) action)->suspended != 2) {
+    lmm_update_variable_weight(cpu_maxmin_system,
+			       ((surf_action_cpu_Cas01_t) action)->
+			       variable, 0.0);
+    ((surf_action_cpu_Cas01_t) action)->suspended = 1;
+  }
+  XBT_OUT;
+}
+
+static void action_resume(surf_action_t action)
+{
+  XBT_IN1("(%p)", action);
+  if (((surf_action_cpu_Cas01_t) action)->suspended != 2) {
+    lmm_update_variable_weight(cpu_maxmin_system,
+			       ((surf_action_cpu_Cas01_t) action)->
+			       variable, action->priority);
+    ((surf_action_cpu_Cas01_t) action)->suspended = 0;
+  }
+  XBT_OUT;
+}
+
+static int action_is_suspended(surf_action_t action)
+{
+  return (((surf_action_cpu_Cas01_t) action)->suspended == 1);
+}
+
+static void action_set_max_duration(surf_action_t action, double duration)
+{
+  XBT_IN2("(%p,%g)", action, duration);
+  action->max_duration = duration;
+  XBT_OUT;
+}
+
+static void action_set_priority(surf_action_t action, double priority)
+{
+  XBT_IN2("(%p,%g)", action, priority);
+  action->priority = priority;
+  lmm_update_variable_weight(cpu_maxmin_system, ((surf_action_cpu_Cas01_t) action)->variable, priority);
+
+  XBT_OUT;
+}
+
 static e_surf_cpu_state_t get_state(void *cpu)
 {
-  return SURF_CPU_OFF;
+  return ((cpu_Cas01_t) cpu)->state_current;
+}
+
+static double get_speed(void *cpu, double load)
+{
+  return load * (((cpu_Cas01_t) cpu)->power_scale);
+}
+
+static double get_available_speed(void *cpu)
+{
+  /* number between 0 and 1 */
+  return ((cpu_Cas01_t) cpu)->power_current;
 }
 
 static void finalize(void)
 {
   xbt_dict_free(&cpu_set);
-  xbt_swag_free(surf_cpu_resource->common_public->states.ready_action_set);
-  xbt_swag_free(surf_cpu_resource->common_public->states.
+  xbt_swag_free(surf_cpu_model->common_public->states.ready_action_set);
+  xbt_swag_free(surf_cpu_model->common_public->states.
 		running_action_set);
-  xbt_swag_free(surf_cpu_resource->common_public->states.
+  xbt_swag_free(surf_cpu_model->common_public->states.
 		failed_action_set);
-  xbt_swag_free(surf_cpu_resource->common_public->states.done_action_set);
-  xbt_free(surf_cpu_resource->common_public);
-  xbt_free(surf_cpu_resource->common_private);
-  xbt_free(surf_cpu_resource->extension_public);
+  xbt_swag_free(surf_cpu_model->common_public->states.done_action_set);
+  free(surf_cpu_model->common_public);
+  free(surf_cpu_model->common_private);
+  free(surf_cpu_model->extension_public);
 
-  xbt_free(surf_cpu_resource);
-  surf_cpu_resource = NULL;
+  free(surf_cpu_model);
+  surf_cpu_model = NULL;
 }
 
-static void surf_cpu_resource_init_internal(void)
+static void surf_cpu_model_init_internal(void)
 {
   s_surf_action_t action;
 
-  surf_cpu_resource = xbt_new0(s_surf_cpu_resource_t, 1);
+  surf_cpu_model = xbt_new0(s_surf_cpu_model_t, 1);
+
+  surf_cpu_model->common_private =
+      xbt_new0(s_surf_model_private_t, 1);
+  surf_cpu_model->common_public = xbt_new0(s_surf_model_public_t, 1);
 
-  surf_cpu_resource->common_private =
-      xbt_new0(s_surf_resource_private_t, 1);
-  surf_cpu_resource->common_public = xbt_new0(s_surf_resource_public_t, 1);
-/*   surf_cpu_resource->extension_private = xbt_new0(s_surf_cpu_resource_extension_private_t,1); */
-  surf_cpu_resource->extension_public =
-      xbt_new0(s_surf_cpu_resource_extension_public_t, 1);
+  surf_cpu_model->extension_public =
+      xbt_new0(s_surf_cpu_model_extension_public_t, 1);
 
-  surf_cpu_resource->common_public->states.ready_action_set =
+  surf_cpu_model->common_public->states.ready_action_set =
       xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_cpu_resource->common_public->states.running_action_set =
+  surf_cpu_model->common_public->states.running_action_set =
       xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_cpu_resource->common_public->states.failed_action_set =
+  surf_cpu_model->common_public->states.failed_action_set =
       xbt_swag_new(xbt_swag_offset(action, state_hookup));
-  surf_cpu_resource->common_public->states.done_action_set =
+  surf_cpu_model->common_public->states.done_action_set =
       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 
-  surf_cpu_resource->common_public->name_service = name_service;
-  surf_cpu_resource->common_public->get_resource_name = get_resource_name;
-  surf_cpu_resource->common_public->action_get_state =
+  surf_cpu_model->common_public->name_service = name_service;
+  surf_cpu_model->common_public->get_model_name = get_model_name;
+  surf_cpu_model->common_public->action_get_state =
       surf_action_get_state;
-  surf_cpu_resource->common_public->action_free = action_free;
-  surf_cpu_resource->common_public->action_cancel = action_cancel;
-  surf_cpu_resource->common_public->action_recycle = action_recycle;
-  surf_cpu_resource->common_public->action_change_state =
+  surf_cpu_model->common_public->action_get_start_time =
+      surf_action_get_start_time;
+  surf_cpu_model->common_public->action_get_finish_time =
+      surf_action_get_finish_time;
+  surf_cpu_model->common_public->action_free = action_free;
+  surf_cpu_model->common_public->action_use = action_use;
+  surf_cpu_model->common_public->action_cancel = action_cancel;
+  surf_cpu_model->common_public->action_recycle = action_recycle;
+  surf_cpu_model->common_public->action_change_state =
       action_change_state;
+  surf_cpu_model->common_public->action_set_data = surf_action_set_data;
+  surf_cpu_model->common_public->name = "CPU";
 
-  surf_cpu_resource->common_private->resource_used = resource_used;
-  surf_cpu_resource->common_private->share_resources = share_resources;
-  surf_cpu_resource->common_private->update_actions_state =
+  surf_cpu_model->common_private->model_used = model_used;
+  surf_cpu_model->common_private->share_models = share_models;
+  surf_cpu_model->common_private->update_actions_state =
       update_actions_state;
-  surf_cpu_resource->common_private->update_resource_state =
-      update_resource_state;
-  surf_cpu_resource->common_private->finalize = finalize;
-
-  surf_cpu_resource->extension_public->execute = execute;
-  surf_cpu_resource->extension_public->get_state = get_state;
+  surf_cpu_model->common_private->update_model_state =
+      update_model_state;
+  surf_cpu_model->common_private->finalize = finalize;
+
+  surf_cpu_model->common_public->suspend = action_suspend;
+  surf_cpu_model->common_public->resume = action_resume;
+  surf_cpu_model->common_public->is_suspended = action_is_suspended;
+  surf_cpu_model->common_public->set_max_duration =
+      action_set_max_duration;
+  surf_cpu_model->common_public->set_priority = action_set_priority;
+  surf_cpu_model->extension_public->execute = execute;
+  surf_cpu_model->extension_public->sleep = action_sleep;
+
+  surf_cpu_model->extension_public->get_state = get_state;
+  surf_cpu_model->extension_public->get_speed = get_speed;
+  surf_cpu_model->extension_public->get_available_speed =
+      get_available_speed;
 
   cpu_set = xbt_dict_new();
 
-  xbt_assert0(maxmin_system, "surf_init has to be called first!");
+  if (!cpu_maxmin_system)
+    cpu_maxmin_system = lmm_system_new();
 }
 
-void surf_cpu_resource_init(const char *filename)
+/*********************************************************************/
+/* Basic sharing model for CPU: that is where all this started... ;) */
+/*********************************************************************/
+/* @InProceedings{casanova01simgrid, */
+/*   author =       "H. Casanova", */
+/*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
+/*                  and the Grid (CCGrid'01)", */
+/*   publisher =    "IEEE Computer Society", */
+/*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
+/*                  Scheduling", */
+/*   year =         "2001", */
+/*   month =        may, */
+/*   note =         "Available at */
+/*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
+/* } */
+void surf_cpu_model_init_Cas01(const char *filename)
 {
-  surf_cpu_resource_init_internal();
+  if (surf_cpu_model)
+    return;
+  surf_cpu_model_init_internal();
   parse_file(filename);
-  xbt_dynar_push(resource_list, &surf_cpu_resource);
+  xbt_dynar_push(model_list, &surf_cpu_model);
 }