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[simgrid.git] / src / surf / cpu_im.c
1 /* Copyright (c) 2009, 2010. The SimGrid Team.
2  * All rights reserved.                                                     */
3
4 /* This program is free software; you can redistribute it and/or modify it
5  * under the terms of the license (GNU LGPL) which comes with this package. */
6
7 #include "surf_private.h"
8
9 #undef GENERIC_LMM_ACTION
10 #undef GENERIC_ACTION
11 #undef ACTION_GET_CPU
12 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
13 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
14 #define ACTION_GET_CPU(action) ((surf_action_cpu_Cas01_im_t) action)->cpu
15
16 typedef struct surf_action_cpu_cas01_im {
17   s_surf_action_lmm_t generic_lmm_action;
18   s_xbt_swag_hookup_t cpu_list_hookup;
19   int index_heap;
20   void *cpu;
21 } s_surf_action_cpu_Cas01_im_t, *surf_action_cpu_Cas01_im_t;
22
23 typedef struct cpu_Cas01_im {
24   s_surf_resource_t generic_resource;
25   s_xbt_swag_hookup_t modified_cpu_hookup;
26   double power_peak;
27   double power_scale;
28   tmgr_trace_event_t power_event;
29   e_surf_resource_state_t state_current;
30   tmgr_trace_event_t state_event;
31   lmm_constraint_t constraint;
32   xbt_swag_t action_set;
33   double last_update;
34 } s_cpu_Cas01_im_t, *cpu_Cas01_im_t;
35
36 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_im, surf,
37                                 "Logging specific to the SURF CPU IMPROVED module");
38
39
40 lmm_system_t cpu_im_maxmin_system = NULL;
41 static xbt_swag_t cpu_im_modified_cpu = NULL;
42 static xbt_heap_t cpu_im_action_heap = NULL;
43 extern int sg_maxmin_selective_update;
44
45
46 static xbt_swag_t cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
47
48 static cpu_Cas01_im_t cpu_im_new(char *name, double power_peak,
49                               double power_scale,
50                               tmgr_trace_t power_trace,
51                               e_surf_resource_state_t state_initial,
52                               tmgr_trace_t state_trace,
53                               xbt_dict_t cpu_properties)
54 {
55   cpu_Cas01_im_t cpu = NULL;
56   s_surf_action_cpu_Cas01_im_t action;
57   cpu = xbt_new0(s_cpu_Cas01_im_t, 1);
58
59   #ifdef HAVE_TRACING
60   TRACE_surf_host_declaration (name, power_scale * power_peak);
61   #endif
62
63   xbt_assert1(!surf_model_resource_by_name(surf_cpu_model, name),
64               "Host '%s' declared several times in the platform file", name);
65   cpu->generic_resource.model = surf_cpu_model;
66   cpu->generic_resource.name = name;
67   cpu->generic_resource.properties = cpu_properties;
68   cpu->power_peak = power_peak;
69   xbt_assert0(cpu->power_peak > 0, "Power has to be >0");
70   cpu->power_scale = power_scale;
71   if (power_trace)
72     cpu->power_event =
73       tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
74
75   cpu->state_current = state_initial;
76   if (state_trace)
77     cpu->state_event =
78       tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
79
80   cpu->constraint =
81     lmm_constraint_new(cpu_im_maxmin_system, cpu,
82                        cpu->power_scale * cpu->power_peak);
83
84   xbt_dict_set(surf_model_resource_set(surf_cpu_model), name, cpu,
85                surf_resource_free);
86   cpu->action_set = xbt_swag_new(xbt_swag_offset(action, cpu_list_hookup));
87
88   return cpu;
89 }
90
91
92 static void parse_cpu_im_init(void)
93 {
94   double power_peak = 0.0;
95   double power_scale = 0.0;
96   tmgr_trace_t power_trace = NULL;
97   e_surf_resource_state_t state_initial = SURF_RESOURCE_OFF;
98   tmgr_trace_t state_trace = NULL;
99
100   power_peak = get_cpu_power(A_surfxml_host_power);
101   surf_parse_get_double(&power_scale, A_surfxml_host_availability);
102   power_trace = tmgr_trace_new(A_surfxml_host_availability_file);
103
104   xbt_assert0((A_surfxml_host_state == A_surfxml_host_state_ON) ||
105               (A_surfxml_host_state == A_surfxml_host_state_OFF),
106               "Invalid state");
107   if (A_surfxml_host_state == A_surfxml_host_state_ON)
108     state_initial = SURF_RESOURCE_ON;
109   if (A_surfxml_host_state == A_surfxml_host_state_OFF)
110     state_initial = SURF_RESOURCE_OFF;
111   state_trace = tmgr_trace_new(A_surfxml_host_state_file);
112
113   current_property_set = xbt_dict_new();
114   cpu_im_new(xbt_strdup(A_surfxml_host_id), power_peak, power_scale,
115           power_trace, state_initial, state_trace, current_property_set);
116
117 }
118
119 static void cpu_im_add_traces_cpu(void)
120 {
121   xbt_dict_cursor_t cursor = NULL;
122   char *trace_name, *elm;
123   static int called = 0;
124   if (called)
125     return;
126   called = 1;
127
128   /* connect all traces relative to hosts */
129   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
130     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
131     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
132
133     xbt_assert1(host, "Host %s undefined", elm);
134     xbt_assert1(trace, "Trace %s undefined", trace_name);
135
136     host->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, host);
137   }
138
139   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
140     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
141     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
142
143     xbt_assert1(host, "Host %s undefined", elm);
144     xbt_assert1(trace, "Trace %s undefined", trace_name);
145
146     host->power_event = tmgr_history_add_trace(history, trace, 0.0, 0, host);
147   }
148 }
149
150 static void cpu_im_define_callbacks(const char *file)
151 {
152
153   surf_parse_reset_parser();
154   surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_im_init);
155   surfxml_add_callback(ETag_surfxml_platform_cb_list, &cpu_im_add_traces_cpu);
156 }
157
158 static int cpu_im_resource_used(void *resource_id)
159 {
160   return lmm_constraint_used(cpu_im_maxmin_system,
161                              ((cpu_Cas01_im_t) resource_id)->constraint);
162 }
163
164 static int cpu_im_action_unref(surf_action_t action)
165 {
166   action->refcount--;
167   if (!action->refcount) {
168     xbt_swag_remove(action, action->state_set);
169     if (((surf_action_lmm_t) action)->variable)
170       lmm_variable_free(cpu_im_maxmin_system,
171                         ((surf_action_lmm_t) action)->variable);
172     /* remove from heap */
173     xbt_heap_remove(cpu_im_action_heap,
174                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
175     xbt_swag_remove(action,
176                     ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
177     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
178 #ifdef HAVE_TRACING
179     if (action->category) xbt_free (action->category);
180 #endif
181     free(action);
182     return 1;
183   }
184   return 0;
185 }
186
187 static void cpu_im_action_cancel(surf_action_t action)
188 {
189   surf_action_state_set(action, SURF_ACTION_FAILED);
190   xbt_heap_remove(cpu_im_action_heap,
191                   ((surf_action_cpu_Cas01_im_t) action)->index_heap);
192   xbt_swag_remove(action,
193                   ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
194   return;
195 }
196
197 static void cpu_im_cpu_action_state_set(surf_action_t action,
198                                  e_surf_action_state_t state)
199 {
200 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
201 /*     if(((surf_action_lmm_t)action)->variable) { */
202 /*       lmm_variable_disable(cpu_im_maxmin_system, ((surf_action_lmm_t)action)->variable); */
203 /*       ((surf_action_lmm_t)action)->variable = NULL; */
204 /*     } */
205
206   surf_action_state_set(action, state);
207   return;
208 }
209
210 static void cpu_im_update_remains(cpu_Cas01_im_t cpu, double now)
211 {
212   surf_action_cpu_Cas01_im_t action;
213
214   if (cpu->last_update >= now)
215     return;
216   xbt_swag_foreach(action, cpu->action_set) {
217     if (GENERIC_ACTION(action).state_set !=
218         surf_cpu_model->states.running_action_set)
219       continue;
220
221     /* bogus priority, skip it */
222     if (GENERIC_ACTION(action).priority <= 0)
223       continue;
224
225     if (GENERIC_ACTION(action).remains > 0) {
226       double_update(&(GENERIC_ACTION(action).remains),
227                     lmm_variable_getvalue(GENERIC_LMM_ACTION
228                                           (action).variable) * (now -
229                                                                 cpu->last_update));
230 #ifdef HAVE_TRACING
231       TRACE_surf_host_set_utilization (cpu->generic_resource.name,
232                 action->generic_lmm_action.generic_action.data, lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable), cpu->last_update, now-cpu->last_update);
233 #endif
234       DEBUG2("Update action(%p) remains %lf", action,
235              GENERIC_ACTION(action).remains);
236     }
237   }
238   cpu->last_update = now;
239 }
240
241 static double cpu_im_share_resources(double now)
242 {
243   surf_action_cpu_Cas01_im_t action;
244   double min;
245   double value;
246   cpu_Cas01_im_t cpu, cpu_next;
247
248   xbt_swag_foreach(cpu, cpu_im_modified_cpu)
249     cpu_im_update_remains(cpu, now);
250
251   lmm_solve(cpu_im_maxmin_system);
252
253   xbt_swag_foreach_safe(cpu, cpu_next, cpu_im_modified_cpu) {
254     xbt_swag_foreach(action, cpu->action_set) {
255       if (GENERIC_ACTION(action).state_set !=
256           surf_cpu_model->states.running_action_set)
257         continue;
258
259       /* bogus priority, skip it */
260       if (GENERIC_ACTION(action).priority <= 0)
261         continue;
262
263       min = -1;
264       value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
265       if (value > 0) {
266         if (GENERIC_ACTION(action).remains > 0)
267           value = GENERIC_ACTION(action).remains / value;
268         else
269           value = 0.0;
270       }
271       if (value > 0)
272         min = now + value;
273
274       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
275           && (min == -1
276               || GENERIC_ACTION(action).start +
277               GENERIC_ACTION(action).max_duration < min))
278         min =
279           GENERIC_ACTION(action).start + GENERIC_ACTION(action).max_duration;
280
281       DEBUG4("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
282              GENERIC_ACTION(action).start, now + value,
283              GENERIC_ACTION(action).max_duration);
284
285       if (action->index_heap >= 0) {
286         surf_action_cpu_Cas01_im_t heap_act =
287           xbt_heap_remove(cpu_im_action_heap, action->index_heap);
288         if (heap_act != action)
289           DIE_IMPOSSIBLE;
290       }
291       if (min != -1) {
292         xbt_heap_push(cpu_im_action_heap, action, min);
293         DEBUG2("Insert at heap action(%p) min %lf", action, min);
294       }
295     }
296     xbt_swag_remove(cpu, cpu_im_modified_cpu);
297   }
298   return xbt_heap_size(cpu_im_action_heap) >
299     0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
300 }
301
302 static void cpu_im_update_actions_state(double now, double delta)
303 {
304   surf_action_cpu_Cas01_im_t action;
305
306   while ((xbt_heap_size(cpu_im_action_heap) > 0)
307          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
308     action = xbt_heap_pop(cpu_im_action_heap);
309     DEBUG1("Action %p: finish", action);
310     GENERIC_ACTION(action).finish = surf_get_clock();
311     /* set the remains to 0 due to precision problems when updating the remaining amount */
312 #ifdef HAVE_TRACING
313     TRACE_surf_host_set_utilization (((cpu_Cas01_im_t)(action->cpu))->generic_resource.name,
314               action->generic_lmm_action.generic_action.data, lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable), ((cpu_Cas01_im_t)(action->cpu))->last_update, now-((cpu_Cas01_im_t)(action->cpu))->last_update);
315 #endif
316     GENERIC_ACTION(action).remains = 0;
317     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
318     cpu_im_update_remains(action->cpu, surf_get_clock());
319   }
320   return;
321 }
322
323 static void cpu_im_update_resource_state(void *id,
324                                   tmgr_trace_event_t event_type,
325                                   double value, double date)
326 {
327   cpu_Cas01_im_t cpu = id;
328   if (event_type == cpu->power_event) {
329     cpu->power_scale = value;
330     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
331                                 cpu->power_scale * cpu->power_peak);
332 #ifdef HAVE_TRACING
333     TRACE_surf_host_set_power (date, cpu->generic_resource.name, cpu->power_scale * cpu->power_peak);
334 #endif
335     xbt_swag_insert(cpu, cpu_im_modified_cpu);
336     if (tmgr_trace_event_free(event_type))
337       cpu->power_event = NULL;
338   } else if (event_type == cpu->state_event) {
339     if (value > 0)
340       cpu->state_current = SURF_RESOURCE_ON;
341     else {
342       lmm_constraint_t cnst = cpu->constraint;
343       lmm_variable_t var = NULL;
344       lmm_element_t elem = NULL;
345
346       cpu->state_current = SURF_RESOURCE_OFF;
347
348       while ((var = lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
349         surf_action_t action = lmm_variable_id(var);
350
351         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
352             surf_action_state_get(action) == SURF_ACTION_READY ||
353             surf_action_state_get(action) == SURF_ACTION_NOT_IN_THE_SYSTEM) {
354           action->finish = date;
355           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
356         }
357       }
358     }
359     if (tmgr_trace_event_free(event_type))
360       cpu->state_event = NULL;
361   } else {
362     CRITICAL0("Unknown event ! \n");
363     xbt_abort();
364   }
365
366   return;
367 }
368
369 static surf_action_t cpu_im_execute(void *cpu, double size)
370 {
371   surf_action_cpu_Cas01_im_t action = NULL;
372   cpu_Cas01_im_t CPU = cpu;
373
374   XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
375   action =
376     surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
377                     surf_cpu_model, CPU->state_current != SURF_RESOURCE_ON);
378
379   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
380                                                    calloc but it seems to help valgrind... */
381
382   GENERIC_LMM_ACTION(action).variable =
383     lmm_variable_new(cpu_im_maxmin_system, action,
384                      GENERIC_ACTION(action).priority, -1.0, 1);
385   action->index_heap = -1;
386   action->cpu = CPU;
387   xbt_swag_insert(CPU, cpu_im_modified_cpu);
388   xbt_swag_insert(action, CPU->action_set);
389   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
390              GENERIC_LMM_ACTION(action).variable, 1.0);
391   XBT_OUT;
392   return (surf_action_t) action;
393 }
394
395 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
396 {
397   surf_action_cpu_Cas01_im_t action = NULL;
398
399   if (duration > 0)
400     duration = MAX(duration, MAXMIN_PRECISION);
401
402   XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
403   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
404   GENERIC_ACTION(action).max_duration = duration;
405   GENERIC_LMM_ACTION(action).suspended = 2;
406   if (duration == NO_MAX_DURATION) {
407     /* Move to the *end* of the corresponding action set. This convention
408        is used to speed up update_resource_state  */
409     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
410     ((surf_action_t) action)->state_set =
411       cpu_im_running_action_set_that_does_not_need_being_checked;
412     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
413   }
414
415   lmm_update_variable_weight(cpu_im_maxmin_system,
416                              GENERIC_LMM_ACTION(action).variable, 0.0);
417   xbt_swag_insert(cpu, cpu_im_modified_cpu);
418   XBT_OUT;
419   return (surf_action_t) action;
420 }
421
422 static void cpu_im_action_suspend(surf_action_t action)
423 {
424   XBT_IN1("(%p)", action);
425   if (((surf_action_lmm_t) action)->suspended != 2) {
426     lmm_update_variable_weight(cpu_im_maxmin_system,
427                                ((surf_action_lmm_t) action)->variable, 0.0);
428     ((surf_action_lmm_t) action)->suspended = 1;
429     xbt_heap_remove(cpu_im_action_heap,
430                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
431     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
432   }
433   XBT_OUT;
434 }
435
436 static void cpu_im_action_resume(surf_action_t action)
437 {
438
439   XBT_IN1("(%p)", action);
440   if (((surf_action_lmm_t) action)->suspended != 2) {
441     lmm_update_variable_weight(cpu_im_maxmin_system,
442                                ((surf_action_lmm_t) action)->variable,
443                                action->priority);
444     ((surf_action_lmm_t) action)->suspended = 0;
445     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
446   }
447   XBT_OUT;
448 }
449
450 static int cpu_im_action_is_suspended(surf_action_t action)
451 {
452   return (((surf_action_lmm_t) action)->suspended == 1);
453 }
454
455 static void cpu_im_action_set_max_duration(surf_action_t action, double duration)
456 {
457   XBT_IN2("(%p,%g)", action, duration);
458
459   action->max_duration = duration;
460   /* insert cpu in modified_cpu set to notice the max duration change */
461   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
462   XBT_OUT;
463 }
464
465 static void cpu_im_action_set_priority(surf_action_t action, double priority)
466 {
467   XBT_IN2("(%p,%g)", action, priority);
468   action->priority = priority;
469   lmm_update_variable_weight(cpu_im_maxmin_system,
470                              ((surf_action_lmm_t) action)->variable,
471                              priority);
472
473   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
474   XBT_OUT;
475 }
476
477 static double cpu_im_action_get_remains(surf_action_t action)
478 {
479   XBT_IN1("(%p)", action);
480   /* update remains before return it */
481   cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
482   return action->remains;
483   XBT_OUT;
484 }
485
486 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
487 {
488   return ((cpu_Cas01_im_t) cpu)->state_current;
489 }
490
491 static double cpu_im_get_speed(void *cpu, double load)
492 {
493   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
494 }
495
496 static double cpu_im_get_available_speed(void *cpu)
497 {
498   /* number between 0 and 1 */
499   return ((cpu_Cas01_im_t) cpu)->power_scale;
500 }
501
502 static void cpu_im_action_update_index_heap(void *action, int i)
503 {
504   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
505 }
506 static void cpu_im_create_resource(char *name, double power_peak,
507         double power_scale,
508         tmgr_trace_t power_trace,
509         e_surf_resource_state_t state_initial,
510         tmgr_trace_t state_trace,
511         xbt_dict_t cpu_properties)
512 {
513         cpu_im_new(name,power_peak,power_scale,power_trace,
514                                           state_initial,state_trace,cpu_properties);
515 }
516
517 static void cpu_im_finalize(void)
518 {
519   void *cpu;
520   xbt_dict_cursor_t cursor;
521   char *key;
522   xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key, cpu) {
523     cpu_Cas01_im_t CPU = cpu;
524     xbt_swag_free(CPU->action_set);
525   }
526
527   lmm_system_free(cpu_im_maxmin_system);
528   cpu_im_maxmin_system = NULL;
529
530   surf_model_exit(surf_cpu_model);
531   surf_cpu_model = NULL;
532
533   xbt_swag_free(cpu_im_running_action_set_that_does_not_need_being_checked);
534   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
535   xbt_heap_free(cpu_im_action_heap);
536   xbt_swag_free(cpu_im_modified_cpu);
537 }
538
539 static void surf_cpu_im_model_init_internal(void)
540 {
541   s_surf_action_t action;
542   s_cpu_Cas01_im_t cpu;
543
544   surf_cpu_model = surf_model_init();
545
546   cpu_im_running_action_set_that_does_not_need_being_checked =
547     xbt_swag_new(xbt_swag_offset(action, state_hookup));
548
549   surf_cpu_model->name = "CPU_IM";
550
551   surf_cpu_model->action_unref = cpu_im_action_unref;
552   surf_cpu_model->action_cancel = cpu_im_action_cancel;
553   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
554
555   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
556   surf_cpu_model->model_private->share_resources = cpu_im_share_resources;
557   surf_cpu_model->model_private->update_actions_state = cpu_im_update_actions_state;
558   surf_cpu_model->model_private->update_resource_state =
559     cpu_im_update_resource_state;
560   surf_cpu_model->model_private->finalize = cpu_im_finalize;
561
562   surf_cpu_model->suspend = cpu_im_action_suspend;
563   surf_cpu_model->resume = cpu_im_action_resume;
564   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
565   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
566   surf_cpu_model->set_priority = cpu_im_action_set_priority;
567   surf_cpu_model->get_remains = cpu_im_action_get_remains;
568
569   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
570   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
571
572   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
573   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
574   surf_cpu_model->extension.cpu.get_available_speed = cpu_im_get_available_speed;
575   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
576   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
577
578   if (!cpu_im_maxmin_system) {
579     sg_maxmin_selective_update = 1;
580     cpu_im_maxmin_system = lmm_system_new();
581   }
582   cpu_im_action_heap = xbt_heap_new(8, NULL);
583   xbt_heap_set_update_callback(cpu_im_action_heap, cpu_im_action_update_index_heap);
584   cpu_im_modified_cpu = xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
585 }
586
587 /*********************************************************************/
588 /* Basic sharing model for CPU: that is where all this started... ;) */
589 /*********************************************************************/
590 /* @InProceedings{casanova01simgrid, */
591 /*   author =       "H. Casanova", */
592 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
593 /*                  and the Grid (CCGrid'01)", */
594 /*   publisher =    "IEEE Computer Society", */
595 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
596 /*                  Scheduling", */
597 /*   year =         "2001", */
598 /*   month =        may, */
599 /*   note =         "Available at */
600 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
601 /* } */
602 void surf_cpu_model_init_Cas01_im(const char *filename)
603 {
604   if (surf_cpu_model)
605     return;
606   surf_cpu_im_model_init_internal();
607   cpu_im_define_callbacks(filename);
608   xbt_dynar_push(model_list, &surf_cpu_model);
609 }