2 /* Copyright (c) 2009, 2010. The SimGrid Team.
3 * All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
9 commit: e2d6799c4182f00443b3013aadb1c2412372460f
10 This commit retrieves the old implementation of CPU_TI with multi-levels.
13 #include "surf_private.h"
14 #include "trace_mgr_private.h"
15 #include "cpu_ti_private.h"
17 #include "surf/surf_resource.h"
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_ti, surf,
20 "Logging specific to the SURF CPU TRACE INTEGRATION module");
24 cpu_ti_running_action_set_that_does_not_need_being_checked = NULL;
25 static xbt_swag_t cpu_ti_modified_cpu = NULL;
26 static xbt_heap_t cpu_ti_action_heap;
28 /* prototypes of new trace functions */
29 static double surf_cpu_ti_integrate_trace(surf_cpu_ti_tgmr_t trace,
33 static double surf_cpu_ti_solve_trace(surf_cpu_ti_tgmr_t trace, double a,
35 static double surf_cpu_ti_solve_trace_somewhat_simple(surf_cpu_ti_tgmr_t
39 static void surf_cpu_ti_free_tmgr(surf_cpu_ti_tgmr_t trace);
41 static double surf_cpu_ti_integrate_trace_simple(surf_cpu_ti_trace_t trace,
43 static double surf_cpu_ti_integrate_trace_simple_point(surf_cpu_ti_trace_t
45 static double surf_cpu_ti_solve_trace_simple(surf_cpu_ti_trace_t trace,
46 double a, double amount);
47 static int surf_cpu_ti_binary_search(double *array, double a, int low,
51 static void surf_cpu_ti_free_trace(surf_cpu_ti_trace_t trace)
53 xbt_free(trace->time_points);
54 xbt_free(trace->integral);
58 static void surf_cpu_ti_free_tmgr(surf_cpu_ti_tgmr_t trace)
61 surf_cpu_ti_free_trace(trace->trace);
65 static surf_cpu_ti_trace_t surf_cpu_ti_trace_new(tmgr_trace_t power_trace)
67 surf_cpu_ti_trace_t trace;
73 trace = xbt_new0(s_surf_cpu_ti_trace_t, 1);
75 xbt_malloc0(sizeof(double) *
76 (xbt_dynar_length(power_trace->s_list.event_list) + 1));
78 xbt_malloc0(sizeof(double) *
79 (xbt_dynar_length(power_trace->s_list.event_list) + 1));
80 trace->nb_points = xbt_dynar_length(power_trace->s_list.event_list);
81 xbt_dynar_foreach(power_trace->s_list.event_list, cpt, val) {
82 trace->time_points[i] = time;
83 trace->integral[i] = integral;
84 integral += val.delta * val.value;
88 trace->time_points[i] = time;
89 trace->integral[i] = integral;
94 * \brief Creates a new integration trace from a tmgr_trace_t
96 * \param power_trace CPU availability trace
97 * \param value Percentage of CPU power available (useful to fixed tracing)
98 * \param spacing Initial spacing
99 * \return Integration trace structure
101 static surf_cpu_ti_tgmr_t cpu_ti_parse_trace(tmgr_trace_t power_trace,
104 surf_cpu_ti_tgmr_t trace;
105 double total_time = 0.0;
108 trace = xbt_new0(s_surf_cpu_ti_tgmr_t, 1);
110 /* no availability file, fixed trace */
112 trace->type = TRACE_FIXED;
113 trace->value = value;
114 XBT_DEBUG("No availability trace. Constant value = %lf", value);
118 /* only one point available, fixed trace */
119 if (xbt_dynar_length(power_trace->s_list.event_list) == 1) {
120 xbt_dynar_get_cpy(power_trace->s_list.event_list, 0, &val);
121 trace->type = TRACE_FIXED;
122 trace->value = val.value;
126 trace->type = TRACE_DYNAMIC;
127 trace->power_trace = power_trace;
129 /* count the total time of trace file */
130 xbt_dynar_foreach(power_trace->s_list.event_list, cpt, val) {
131 total_time += val.delta;
133 trace->trace = surf_cpu_ti_trace_new(power_trace);
134 trace->last_time = total_time;
136 surf_cpu_ti_integrate_trace_simple(trace->trace, 0, total_time);
138 XBT_DEBUG("Total integral %lf, last_time %lf ",
139 trace->total, trace->last_time);
145 static void* cpu_ti_create_resource(const char *name, xbt_dynar_t power_peak,
148 tmgr_trace_t power_trace,
150 e_surf_resource_state_t state_initial,
151 tmgr_trace_t state_trace,
152 xbt_dict_t cpu_properties)
154 tmgr_trace_t empty_trace;
157 s_surf_action_cpu_ti_t ti_action;
158 xbt_assert(core==1,"Multi-core not handled with this model yet");
159 xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
160 "Host '%s' declared several times in the platform file",
162 xbt_assert(core==1,"Multi-core not handled with this model yet");
163 cpu = (cpu_ti_t) surf_resource_new(sizeof(s_cpu_ti_t),
164 surf_cpu_model, name,cpu_properties, NULL);
166 xbt_swag_new(xbt_swag_offset(ti_action, cpu_list_hookup));
168 xbt_dynar_get_cpy(power_peak, 0, &cpu->power_peak);
169 xbt_dynar_free(&power_peak); /* kill memory leak */
170 //cpu->power_peak = power_peak;
171 cpu->pstate = pstate;
172 XBT_DEBUG("CPU create: peak=%lf, pstate=%d",cpu->power_peak, cpu->pstate);
174 xbt_assert(cpu->power_peak > 0, "Power has to be >0");
175 XBT_DEBUG("power scale %lf", power_scale);
176 cpu->power_scale = power_scale;
177 cpu->avail_trace = cpu_ti_parse_trace(power_trace, power_scale);
178 cpu->state_current = state_initial;
181 tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
182 if (power_trace && xbt_dynar_length(power_trace->s_list.event_list) > 1) {
183 /* add a fake trace event if periodicity == 0 */
184 xbt_dynar_get_cpy(power_trace->s_list.event_list,
185 xbt_dynar_length(power_trace->s_list.event_list) - 1, &val);
186 if (val.delta == 0) {
187 empty_trace = tmgr_empty_trace_new();
189 tmgr_history_add_trace(history, empty_trace,
190 cpu->avail_trace->last_time, 0, cpu);
193 xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
195 return xbt_lib_get_elm_or_null(host_lib, name);
199 static void parse_cpu_ti_init(sg_platf_host_cbarg_t host)
201 cpu_ti_create_resource(host->id,
213 static void add_traces_cpu_ti(void)
215 xbt_dict_cursor_t cursor = NULL;
216 char *trace_name, *elm;
218 static int called = 0;
224 /* connect all traces relative to hosts */
225 xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
226 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
227 cpu_ti_t cpu = surf_cpu_resource_priv(surf_cpu_resource_by_name(elm));
229 xbt_assert(cpu, "Host %s undefined", elm);
230 xbt_assert(trace, "Trace %s undefined", trace_name);
232 if (cpu->state_event) {
233 XBT_DEBUG("Trace already configured for this CPU(%s), ignoring it",
237 XBT_DEBUG("Add state trace: %s to CPU(%s)", trace_name, elm);
238 cpu->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, cpu);
241 xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
242 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
243 cpu_ti_t cpu = surf_cpu_resource_priv(surf_cpu_resource_by_name(elm));
245 xbt_assert(cpu, "Host %s undefined", elm);
246 xbt_assert(trace, "Trace %s undefined", trace_name);
248 XBT_DEBUG("Add power trace: %s to CPU(%s)", trace_name, elm);
249 if (cpu->avail_trace)
250 surf_cpu_ti_free_tmgr(cpu->avail_trace);
252 cpu->avail_trace = cpu_ti_parse_trace(trace, cpu->power_scale);
254 /* add a fake trace event if periodicity == 0 */
255 if (trace && xbt_dynar_length(trace->s_list.event_list) > 1) {
257 xbt_dynar_get_cpy(trace->s_list.event_list,
258 xbt_dynar_length(trace->s_list.event_list) - 1, &val);
259 if (val.delta == 0) {
260 tmgr_trace_t empty_trace;
261 empty_trace = tmgr_empty_trace_new();
263 tmgr_history_add_trace(history, empty_trace,
264 cpu->avail_trace->last_time, 0, cpu);
270 static void cpu_ti_define_callbacks()
272 sg_platf_host_add_cb(parse_cpu_ti_init);
273 sg_platf_postparse_add_cb(add_traces_cpu_ti);
276 static int cpu_ti_resource_used(void *resource_id)
278 cpu_ti_t cpu = resource_id;
279 return xbt_swag_size(cpu->action_set);
282 static int cpu_ti_action_unref(surf_action_t action)
285 if (!action->refcount) {
286 xbt_swag_remove(action, action->state_set);
287 /* remove from action_set */
288 xbt_swag_remove(action, ((cpu_ti_t)surf_cpu_resource_priv(ACTION_GET_CPU(action)))->action_set);
289 /* remove from heap */
290 xbt_heap_remove(cpu_ti_action_heap,
291 ((surf_action_cpu_ti_t) action)->index_heap);
292 xbt_swag_insert(((cpu_ti_t)surf_cpu_resource_priv(ACTION_GET_CPU(action))), cpu_ti_modified_cpu);
293 surf_action_free(&action);
299 static void cpu_ti_action_cancel(surf_action_t action)
301 surf_action_state_set(action, SURF_ACTION_FAILED);
302 xbt_heap_remove(cpu_ti_action_heap,
303 ((surf_action_cpu_ti_t) action)->index_heap);
304 xbt_swag_insert(surf_cpu_resource_priv(ACTION_GET_CPU(action)), cpu_ti_modified_cpu);
308 static void cpu_ti_action_state_set(surf_action_t action,
309 e_surf_action_state_t state)
311 surf_action_state_set(action, state);
312 xbt_swag_insert(surf_cpu_resource_priv(ACTION_GET_CPU(action)), cpu_ti_modified_cpu);
317 * \brief Update the remaining amount of actions
319 * \param cpu Cpu on which the actions are running
320 * \param now Current time
322 static void cpu_ti_update_remaining_amount(cpu_ti_t cpu, double now)
325 surf_action_cpu_ti_t action;
327 /* already updated */
328 if (cpu->last_update >= now)
331 /* calcule the surface */
333 surf_cpu_ti_integrate_trace(cpu->avail_trace, cpu->last_update,
334 now) * cpu->power_peak;
335 XBT_DEBUG("Flops total: %lf, Last update %lf", area_total,
338 xbt_swag_foreach(action, cpu->action_set) {
339 surf_action_t generic = (surf_action_t)action;
340 /* action not running, skip it */
341 if (generic->state_set !=
342 surf_cpu_model->states.running_action_set)
345 /* bogus priority, skip it */
346 if (generic->priority <= 0)
349 /* action suspended, skip it */
350 if (action->suspended != 0)
353 /* action don't need update */
354 if (generic->start >= now)
357 /* skip action that are finishing now */
358 if (generic->finish >= 0
359 && generic->finish <= now)
362 /* update remaining */
363 double_update(&(generic->remains),
364 area_total / (cpu->sum_priority *
366 XBT_DEBUG("Update remaining action(%p) remaining %lf", action,
369 cpu->last_update = now;
370 #undef GENERIC_ACTION
374 * \brief Update the finish date of action if necessary
376 * \param cpu Cpu on which the actions are running
377 * \param now Current time
379 static void cpu_ti_update_action_finish_date(cpu_ti_t cpu, double now)
381 #define GENERIC_ACTION(action) action->generic_action
382 surf_action_cpu_ti_t action;
383 double sum_priority = 0.0, total_area, min_finish = -1;
385 /* update remaning amount of actions */
386 cpu_ti_update_remaining_amount(cpu, now);
388 xbt_swag_foreach(action, cpu->action_set) {
389 /* action not running, skip it */
390 if (GENERIC_ACTION(action).state_set !=
391 surf_cpu_model->states.running_action_set)
394 /* bogus priority, skip it */
395 if (GENERIC_ACTION(action).priority <= 0)
398 /* action suspended, skip it */
399 if (action->suspended != 0)
402 sum_priority += 1.0 / GENERIC_ACTION(action).priority;
404 cpu->sum_priority = sum_priority;
406 xbt_swag_foreach(action, cpu->action_set) {
408 /* action not running, skip it */
409 if (GENERIC_ACTION(action).state_set !=
410 surf_cpu_model->states.running_action_set)
413 /* verify if the action is really running on cpu */
414 if (action->suspended == 0 && GENERIC_ACTION(action).priority > 0) {
415 /* total area needed to finish the action. Used in trace integration */
417 (GENERIC_ACTION(action).remains) * sum_priority *
418 GENERIC_ACTION(action).priority;
420 total_area /= cpu->power_peak;
422 GENERIC_ACTION(action).finish =
423 surf_cpu_ti_solve_trace(cpu->avail_trace, now, total_area);
424 /* verify which event will happen before (max_duration or finish time) */
425 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
426 (GENERIC_ACTION(action).start +
427 GENERIC_ACTION(action).max_duration <
428 GENERIC_ACTION(action).finish))
429 min_finish = GENERIC_ACTION(action).start +
430 GENERIC_ACTION(action).max_duration;
432 min_finish = GENERIC_ACTION(action).finish;
434 /* put the max duration time on heap */
435 if (GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
437 (GENERIC_ACTION(action).start +
438 GENERIC_ACTION(action).max_duration);
440 /* add in action heap */
441 XBT_DEBUG("action(%p) index %d", action, action->index_heap);
442 if (action->index_heap >= 0) {
443 surf_action_cpu_ti_t heap_act =
444 xbt_heap_remove(cpu_ti_action_heap, action->index_heap);
445 if (heap_act != action)
448 if (min_finish != NO_MAX_DURATION)
449 xbt_heap_push(cpu_ti_action_heap, action, min_finish);
452 ("Update finish time: Cpu(%s) Action: %p, Start Time: %lf Finish Time: %lf Max duration %lf",
453 cpu->generic_resource.name, action, GENERIC_ACTION(action).start,
454 GENERIC_ACTION(action).finish,
455 GENERIC_ACTION(action).max_duration);
457 /* remove from modified cpu */
458 xbt_swag_remove(cpu, cpu_ti_modified_cpu);
459 #undef GENERIC_ACTION
462 static double cpu_ti_share_resources(double now)
464 cpu_ti_t cpu, cpu_next;
465 double min_action_duration = -1;
467 /* iterates over modified cpus to update share resources */
468 xbt_swag_foreach_safe(cpu, cpu_next, cpu_ti_modified_cpu) {
469 cpu_ti_update_action_finish_date(cpu, now);
471 /* get the min next event if heap not empty */
472 if (xbt_heap_size(cpu_ti_action_heap) > 0)
473 min_action_duration = xbt_heap_maxkey(cpu_ti_action_heap) - now;
475 XBT_DEBUG("Share resources, min next event date: %lf", min_action_duration);
477 return min_action_duration;
480 static void cpu_ti_update_actions_state(double now, double delta)
482 #define GENERIC_ACTION(action) action->generic_action
483 surf_action_cpu_ti_t action;
484 while ((xbt_heap_size(cpu_ti_action_heap) > 0)
485 && (xbt_heap_maxkey(cpu_ti_action_heap) <= now)) {
486 action = xbt_heap_pop(cpu_ti_action_heap);
487 XBT_DEBUG("Action %p: finish", action);
488 GENERIC_ACTION(action).finish = surf_get_clock();
489 /* set the remains to 0 due to precision problems when updating the remaining amount */
490 GENERIC_ACTION(action).remains = 0;
491 cpu_ti_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
492 /* update remaining amount of all actions */
493 cpu_ti_update_remaining_amount(surf_cpu_resource_priv(action->cpu), surf_get_clock());
495 #undef GENERIC_ACTION
498 static void cpu_ti_update_resource_state(void *id,
499 tmgr_trace_event_t event_type,
500 double value, double date)
503 surf_action_cpu_ti_t action;
505 if (event_type == cpu->power_event) {
506 tmgr_trace_t power_trace;
507 surf_cpu_ti_tgmr_t trace;
510 XBT_DEBUG("Finish trace date: %lf value %lf date %lf", surf_get_clock(),
512 /* update remaining of actions and put in modified cpu swag */
513 cpu_ti_update_remaining_amount(cpu, date);
514 xbt_swag_insert(cpu, cpu_ti_modified_cpu);
516 power_trace = cpu->avail_trace->power_trace;
517 xbt_dynar_get_cpy(power_trace->s_list.event_list,
518 xbt_dynar_length(power_trace->s_list.event_list) - 1, &val);
520 surf_cpu_ti_free_tmgr(cpu->avail_trace);
521 cpu->power_scale = val.value;
523 trace = xbt_new0(s_surf_cpu_ti_tgmr_t, 1);
524 trace->type = TRACE_FIXED;
525 trace->value = val.value;
526 XBT_DEBUG("value %lf", val.value);
528 cpu->avail_trace = trace;
530 if (tmgr_trace_event_free(event_type))
531 cpu->power_event = NULL;
533 } else if (event_type == cpu->state_event) {
535 if(cpu->state_current == SURF_RESOURCE_OFF)
536 xbt_dynar_push_as(host_that_restart, char*, (cpu->generic_resource.name));
537 cpu->state_current = SURF_RESOURCE_ON;
539 cpu->state_current = SURF_RESOURCE_OFF;
541 /* put all action running on cpu to failed */
542 xbt_swag_foreach(action, cpu->action_set) {
543 if (surf_action_state_get((surf_action_t) action) ==
545 || surf_action_state_get((surf_action_t) action) ==
547 || surf_action_state_get((surf_action_t) action) ==
548 SURF_ACTION_NOT_IN_THE_SYSTEM) {
549 action->generic_action.finish = date;
550 cpu_ti_action_state_set((surf_action_t) action,
552 if (action->index_heap >= 0) {
553 surf_action_cpu_ti_t heap_act =
554 xbt_heap_remove(cpu_ti_action_heap, action->index_heap);
555 if (heap_act != action)
561 if (tmgr_trace_event_free(event_type))
562 cpu->state_event = NULL;
564 XBT_CRITICAL("Unknown event ! \n");
571 static surf_action_t cpu_ti_execute(void *cpu, double size)
573 surf_action_cpu_ti_t action = NULL;
574 cpu_ti_t CPU = surf_cpu_resource_priv(cpu);
576 XBT_IN("(%s,%g)", surf_resource_name(CPU), size);
578 surf_action_new(sizeof(s_surf_action_cpu_ti_t), size, surf_cpu_model,
579 CPU->state_current != SURF_RESOURCE_ON);
581 action->index_heap = -1;
583 xbt_swag_insert(CPU, cpu_ti_modified_cpu);
585 xbt_swag_insert(action, CPU->action_set);
587 action->suspended = 0; /* Should be useless because of the
588 calloc but it seems to help valgrind... */
591 return (surf_action_t) action;
594 static void cpu_ti_action_update_index_heap(void *action, int i)
596 ((surf_action_cpu_ti_t) action)->index_heap = i;
599 static surf_action_t cpu_ti_action_sleep(void *cpu, double duration)
601 surf_action_cpu_ti_t action = NULL;
604 duration = MAX(duration, MAXMIN_PRECISION);
606 XBT_IN("(%s,%g)", surf_resource_name(surf_cpu_resource_priv(cpu)), duration);
607 action = (surf_action_cpu_ti_t) cpu_ti_execute(cpu, 1.0);
608 action->generic_action.max_duration = duration;
609 action->suspended = 2;
610 if (duration == NO_MAX_DURATION) {
611 /* Move to the *end* of the corresponding action set. This convention
612 is used to speed up update_resource_state */
613 xbt_swag_remove(action, ((surf_action_t) action)->state_set);
614 ((surf_action_t) action)->state_set =
615 cpu_ti_running_action_set_that_does_not_need_being_checked;
616 xbt_swag_insert(action, ((surf_action_t) action)->state_set);
619 return (surf_action_t) action;
622 static void cpu_ti_action_suspend(surf_action_t action)
624 XBT_IN("(%p)", action);
625 if (((surf_action_cpu_ti_t) action)->suspended != 2) {
626 ((surf_action_cpu_ti_t) action)->suspended = 1;
627 xbt_heap_remove(cpu_ti_action_heap,
628 ((surf_action_cpu_ti_t) action)->index_heap);
629 xbt_swag_insert(surf_cpu_resource_priv(ACTION_GET_CPU(action)), cpu_ti_modified_cpu);
634 static void cpu_ti_action_resume(surf_action_t action)
636 XBT_IN("(%p)", action);
637 if (((surf_action_cpu_ti_t) action)->suspended != 2) {
638 ((surf_action_cpu_ti_t) action)->suspended = 0;
639 xbt_swag_insert(surf_cpu_resource_priv(ACTION_GET_CPU(action)), cpu_ti_modified_cpu);
644 static int cpu_ti_action_is_suspended(surf_action_t action)
646 return (((surf_action_cpu_ti_t) action)->suspended == 1);
649 static void cpu_ti_action_set_max_duration(surf_action_t action,
652 surf_action_cpu_ti_t ACT = (surf_action_cpu_ti_t) action;
655 XBT_IN("(%p,%g)", action, duration);
657 action->max_duration = duration;
661 (action->start + action->max_duration) <
662 action->finish ? (action->start +
663 action->max_duration) : action->finish;
665 min_finish = action->finish;
667 /* add in action heap */
668 if (ACT->index_heap >= 0) {
669 surf_action_cpu_ti_t heap_act =
670 xbt_heap_remove(cpu_ti_action_heap, ACT->index_heap);
674 xbt_heap_push(cpu_ti_action_heap, ACT, min_finish);
679 static void cpu_ti_action_set_priority(surf_action_t action,
682 XBT_IN("(%p,%g)", action, priority);
683 action->priority = priority;
684 xbt_swag_insert(surf_cpu_resource_priv(ACTION_GET_CPU(action)), cpu_ti_modified_cpu);
688 static double cpu_ti_action_get_remains(surf_action_t action)
690 XBT_IN("(%p)", action);
691 cpu_ti_update_remaining_amount((cpu_ti_t)
692 ((surf_action_cpu_ti_t) action)->cpu,
695 return action->remains;
698 static e_surf_resource_state_t cpu_ti_get_state(void *cpu)
700 return ((cpu_ti_t)surf_cpu_resource_priv(cpu))->state_current;
703 static double cpu_ti_get_speed(void *cpu, double load)
705 return load * ((cpu_ti_t)surf_cpu_resource_priv(cpu))->power_peak;
709 * \brief Auxiliary function to update the CPU power scale.
711 * This function uses the trace structure to return the power scale at the determined time a.
712 * \param trace Trace structure to search the updated power scale
714 * \return CPU power scale
716 static double surf_cpu_ti_get_power_scale(surf_cpu_ti_tgmr_t trace,
723 reduced_a = a - floor(a / trace->last_time) * trace->last_time;
725 surf_cpu_ti_binary_search(trace->trace->time_points, reduced_a, 0,
726 trace->trace->nb_points - 1);
727 xbt_dynar_get_cpy(trace->power_trace->s_list.event_list, point, &val);
731 static double cpu_ti_get_available_speed(void *cpu)
733 cpu_ti_t CPU = surf_cpu_resource_priv(cpu);
735 surf_cpu_ti_get_power_scale(CPU->avail_trace, surf_get_clock());
736 /* number between 0 and 1 */
737 return CPU->power_scale;
740 static void cpu_ti_finalize(void)
743 xbt_lib_cursor_t cursor;
746 xbt_lib_foreach(host_lib, cursor, key, cpu){
747 if(cpu[SURF_CPU_LEVEL])
749 cpu_ti_t CPU = cpu[SURF_CPU_LEVEL];
750 xbt_swag_free(CPU->action_set);
751 surf_cpu_ti_free_tmgr(CPU->avail_trace);
755 surf_model_exit(surf_cpu_model);
756 surf_cpu_model = NULL;
759 (cpu_ti_running_action_set_that_does_not_need_being_checked);
760 xbt_swag_free(cpu_ti_modified_cpu);
761 cpu_ti_running_action_set_that_does_not_need_being_checked = NULL;
762 xbt_heap_free(cpu_ti_action_heap);
765 static void surf_cpu_ti_model_init_internal(void)
767 s_surf_action_t action;
770 surf_cpu_model = surf_model_init();
772 cpu_ti_running_action_set_that_does_not_need_being_checked =
773 xbt_swag_new(xbt_swag_offset(action, state_hookup));
775 cpu_ti_modified_cpu =
776 xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
778 surf_cpu_model->name = "cpu_ti";
780 surf_cpu_model->action_unref = cpu_ti_action_unref;
781 surf_cpu_model->action_cancel = cpu_ti_action_cancel;
782 surf_cpu_model->action_state_set = cpu_ti_action_state_set;
784 surf_cpu_model->model_private->resource_used = cpu_ti_resource_used;
785 surf_cpu_model->model_private->share_resources = cpu_ti_share_resources;
786 surf_cpu_model->model_private->update_actions_state =
787 cpu_ti_update_actions_state;
788 surf_cpu_model->model_private->update_resource_state =
789 cpu_ti_update_resource_state;
790 surf_cpu_model->model_private->finalize = cpu_ti_finalize;
792 surf_cpu_model->suspend = cpu_ti_action_suspend;
793 surf_cpu_model->resume = cpu_ti_action_resume;
794 surf_cpu_model->is_suspended = cpu_ti_action_is_suspended;
795 surf_cpu_model->set_max_duration = cpu_ti_action_set_max_duration;
796 surf_cpu_model->set_priority = cpu_ti_action_set_priority;
797 surf_cpu_model->get_remains = cpu_ti_action_get_remains;
799 surf_cpu_model->extension.cpu.execute = cpu_ti_execute;
800 surf_cpu_model->extension.cpu.sleep = cpu_ti_action_sleep;
802 surf_cpu_model->extension.cpu.get_state = cpu_ti_get_state;
803 surf_cpu_model->extension.cpu.get_speed = cpu_ti_get_speed;
804 surf_cpu_model->extension.cpu.get_available_speed =
805 cpu_ti_get_available_speed;
806 surf_cpu_model->extension.cpu.add_traces = add_traces_cpu_ti;
808 cpu_ti_action_heap = xbt_heap_new(8, NULL);
809 xbt_heap_set_update_callback(cpu_ti_action_heap,
810 cpu_ti_action_update_index_heap);
814 void surf_cpu_model_init_ti()
816 xbt_assert(!surf_cpu_model,"CPU model already initialized. This should not happen.");
817 surf_cpu_ti_model_init_internal();
818 cpu_ti_define_callbacks();
819 xbt_dynar_push(model_list, &surf_cpu_model);
824 * \brief Integrate trace
826 * Wrapper around surf_cpu_integrate_trace_simple() to get
829 * \param trace Trace structure.
830 * \param a Begin of interval
831 * \param b End of interval
832 * \return the integrate value. -1 if an error occurs.
834 static double surf_cpu_ti_integrate_trace(surf_cpu_ti_tgmr_t trace,
840 int a_index, b_index;
842 if ((a < 0.0) || (a > b)) {
844 ("Error, invalid integration interval [%.2f,%.2f]. You probably have a task executing with negative computation amount. Check your code.",
851 if (trace->type == TRACE_FIXED) {
852 return ((b - a) * trace->value);
855 if (ceil(a / trace->last_time) == a / trace->last_time)
856 a_index = 1 + (int) (ceil(a / trace->last_time));
858 a_index = (int) (ceil(a / trace->last_time));
860 b_index = (int) (floor(b / trace->last_time));
862 if (a_index > b_index) { /* Same chunk */
863 return surf_cpu_ti_integrate_trace_simple(trace->trace,
865 1) * trace->last_time,
871 first_chunk = surf_cpu_ti_integrate_trace_simple(trace->trace,
876 middle_chunk = (b_index - a_index) * trace->total;
877 last_chunk = surf_cpu_ti_integrate_trace_simple(trace->trace,
883 XBT_DEBUG("first_chunk=%.2f middle_chunk=%.2f last_chunk=%.2f\n",
884 first_chunk, middle_chunk, last_chunk);
886 return (first_chunk + middle_chunk + last_chunk);
890 * \brief Auxiliary function to calculate the integral between a and b.
891 * It simply calculates the integral at point a and b and returns the difference
893 * \param trace Trace structure
894 * \param a Initial point
895 * \param b Final point
898 static double surf_cpu_ti_integrate_trace_simple(surf_cpu_ti_trace_t trace,
901 return surf_cpu_ti_integrate_trace_simple_point(trace,
903 surf_cpu_ti_integrate_trace_simple_point(trace, a);
907 * \brief Auxiliary function to calculate the integral at point a.
908 * \param trace Trace structure
912 static double surf_cpu_ti_integrate_trace_simple_point(surf_cpu_ti_trace_t
919 surf_cpu_ti_binary_search(trace->time_points, a, 0,
920 trace->nb_points - 1);
921 integral += trace->integral[ind];
923 ("a %lf ind %d integral %lf ind + 1 %lf ind %lf time +1 %lf time %lf",
924 a, ind, integral, trace->integral[ind + 1], trace->integral[ind],
925 trace->time_points[ind + 1], trace->time_points[ind]);
926 double_update(&a_aux, trace->time_points[ind]);
929 ((trace->integral[ind + 1] -
930 trace->integral[ind]) / (trace->time_points[ind + 1] -
931 trace->time_points[ind])) * (a -
935 XBT_DEBUG("Integral a %lf = %lf", a, integral);
941 * \brief Calculate the time needed to execute "amount" on cpu.
943 * Here, amount can span multiple trace periods
945 * \param trace CPU trace structure
946 * \param a Initial time
947 * \param amount Amount to be executed
950 static double surf_cpu_ti_solve_trace(surf_cpu_ti_tgmr_t trace, double a,
955 double reduced_amount;
959 /* Fix very small negative numbers */
960 if ((a < 0.0) && (a > -EPSILON)) {
963 if ((amount < 0.0) && (amount > -EPSILON)) {
968 if ((a < 0.0) || (amount < 0.0)) {
970 ("Error, invalid parameters [a = %.2f, amount = %.2f]. You probably have a task executing with negative computation amount. Check your code.",
975 /* At this point, a and amount are positive */
977 if (amount < EPSILON)
980 /* Is the trace fixed ? */
981 if (trace->type == TRACE_FIXED) {
982 return (a + (amount / trace->value));
985 XBT_DEBUG("amount %lf total %lf", amount, trace->total);
986 /* Reduce the problem to one where amount <= trace_total */
987 quotient = (int) (floor(amount / trace->total));
988 reduced_amount = (trace->total) * ((amount / trace->total) -
989 floor(amount / trace->total));
990 reduced_a = a - (trace->last_time) * (int) (floor(a / trace->last_time));
992 XBT_DEBUG("Quotient: %d reduced_amount: %lf reduced_a: %lf", quotient,
993 reduced_amount, reduced_a);
995 /* Now solve for new_amount which is <= trace_total */
997 fprintf(stderr,"reduced_a = %.2f\n",reduced_a);
998 fprintf(stderr,"reduced_amount = %.2f\n",reduced_amount);
1001 surf_cpu_ti_solve_trace_somewhat_simple(trace, reduced_a,
1004 /* Re-map to the original b and amount */
1005 b = (trace->last_time) * (int) (floor(a / trace->last_time)) +
1006 (quotient * trace->last_time) + reduced_b;
1011 * \brief Auxiliary function to solve integral
1013 * Here, amount is <= trace->total
1014 * and a <=trace->last_time
1017 static double surf_cpu_ti_solve_trace_somewhat_simple(surf_cpu_ti_tgmr_t
1021 double amount_till_end;
1024 XBT_DEBUG("Solve integral: [%.2f, amount=%.2f]", a, amount);
1026 surf_cpu_ti_integrate_trace(trace, a, trace->last_time);
1028 fprintf(stderr,"amount_till_end=%.2f\n",amount_till_end);
1031 if (amount_till_end > amount) {
1032 b = surf_cpu_ti_solve_trace_simple(trace->trace, a, amount);
1034 b = trace->last_time +
1035 surf_cpu_ti_solve_trace_simple(trace->trace, 0.0,
1036 amount - amount_till_end);
1042 * \brief Auxiliary function to solve integral.
1043 * It returns the date when the requested amount of flops is available
1044 * \param trace Trace structure
1045 * \param a Initial point
1046 * \param amount Amount of flops
1047 * \return The date when amount is available.
1049 static double surf_cpu_ti_solve_trace_simple(surf_cpu_ti_trace_t trace,
1050 double a, double amount)
1055 integral_a = surf_cpu_ti_integrate_trace_simple_point(trace, a);
1057 surf_cpu_ti_binary_search(trace->integral, integral_a + amount, 0,
1058 trace->nb_points - 1);
1059 time = trace->time_points[ind];
1061 (integral_a + amount -
1062 trace->integral[ind]) / ((trace->integral[ind + 1] -
1063 trace->integral[ind]) /
1064 (trace->time_points[ind + 1] -
1065 trace->time_points[ind]));
1071 * \brief Binary search in array.
1072 * It returns the first point of the interval in which "a" is.
1073 * \param array Array
1074 * \param a Value to search
1075 * \param low Low bound to search in array
1076 * \param high Upper bound to search in array
1077 * \return Index of point
1079 static int surf_cpu_ti_binary_search(double *array, double a, int low,
1082 xbt_assert(low < high, "Wrong parameters: low (%d) should be smaller than"
1083 " high (%d)", low, high);
1087 mid = low + (high - low) / 2;
1088 XBT_DEBUG("a %lf low %d high %d mid %d value %lf", a, low, high, mid,
1096 while (low < high - 1);