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"
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 if (trace->time_points)
54 xbt_free(trace->time_points);
56 xbt_free(trace->integral);
60 static void surf_cpu_ti_free_tmgr(surf_cpu_ti_tgmr_t trace)
63 surf_cpu_ti_free_trace(trace->trace);
67 static surf_cpu_ti_trace_t surf_cpu_ti_trace_new(tmgr_trace_t power_trace)
69 surf_cpu_ti_trace_t trace;
75 trace = xbt_new0(s_surf_cpu_ti_trace_t, 1);
77 xbt_malloc0(sizeof(double) *
78 (xbt_dynar_length(power_trace->event_list) + 1));
80 xbt_malloc0(sizeof(double) *
81 (xbt_dynar_length(power_trace->event_list) + 1));
82 trace->nb_points = xbt_dynar_length(power_trace->event_list);
83 xbt_dynar_foreach(power_trace->event_list, cpt, val) {
84 trace->time_points[i] = time;
85 trace->integral[i] = integral;
86 integral += val.delta * val.value;
90 trace->time_points[i] = time;
91 trace->integral[i] = integral;
96 * \brief Creates a new integration trace from a tmgr_trace_t
98 * \param power_trace CPU availability trace
99 * \param value Percentage of CPU power available (useful to fixed tracing)
100 * \param spacing Initial spacing
101 * \return Integration trace structure
103 static surf_cpu_ti_tgmr_t cpu_ti_parse_trace(tmgr_trace_t power_trace,
106 surf_cpu_ti_tgmr_t trace;
107 double total_time = 0.0;
110 trace = xbt_new0(s_surf_cpu_ti_tgmr_t, 1);
112 /* no availability file, fixed trace */
114 trace->type = TRACE_FIXED;
115 trace->value = value;
116 DEBUG1("No availabily trace. Constant value = %lf", value);
120 /* only one point available, fixed trace */
121 if (xbt_dynar_length(power_trace->event_list) == 1) {
122 xbt_dynar_get_cpy(power_trace->event_list, 0, &val);
123 trace->type = TRACE_FIXED;
124 trace->value = val.value;
128 trace->type = TRACE_DYNAMIC;
129 trace->power_trace = power_trace;
131 /* count the total time of trace file */
132 xbt_dynar_foreach(power_trace->event_list, cpt, val) {
133 total_time += val.delta;
135 trace->trace = surf_cpu_ti_trace_new(power_trace);
136 trace->last_time = total_time;
138 surf_cpu_ti_integrate_trace_simple(trace->trace, 0, total_time);
140 DEBUG2("Total integral %lf, last_time %lf ",
141 trace->total, trace->last_time);
147 static cpu_ti_t cpu_ti_new(char *name, double power_peak,
149 tmgr_trace_t power_trace,
151 e_surf_resource_state_t state_initial,
152 tmgr_trace_t state_trace,
153 xbt_dict_t cpu_properties)
155 tmgr_trace_t empty_trace;
157 cpu_ti_t cpu = xbt_new0(s_cpu_ti_t, 1);
158 s_surf_action_cpu_ti_t ti_action;
159 xbt_assert1(!surf_model_resource_by_name(surf_cpu_model, name),
160 "Host '%s' declared several times in the platform file",
162 xbt_assert0(core==1,"Multi-core not handled with this model yet");
164 xbt_swag_new(xbt_swag_offset(ti_action, cpu_list_hookup));
165 cpu->generic_resource.model = surf_cpu_model;
166 cpu->generic_resource.name = name;
167 cpu->generic_resource.properties = cpu_properties;
168 cpu->power_peak = power_peak;
169 xbt_assert0(cpu->power_peak > 0, "Power has to be >0");
170 DEBUG1("power scale %lf", power_scale);
171 cpu->power_scale = power_scale;
172 cpu->avail_trace = cpu_ti_parse_trace(power_trace, power_scale);
173 cpu->state_current = state_initial;
176 tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
177 if (power_trace && xbt_dynar_length(power_trace->event_list) > 1) {
178 /* add a fake trace event if periodicity == 0 */
179 xbt_dynar_get_cpy(power_trace->event_list,
180 xbt_dynar_length(power_trace->event_list) - 1, &val);
181 if (val.delta == 0) {
182 empty_trace = tmgr_empty_trace_new();
184 tmgr_history_add_trace(history, empty_trace,
185 cpu->avail_trace->last_time, 0, cpu);
188 xbt_dict_set(surf_model_resource_set(surf_cpu_model), name, cpu,
195 static void parse_cpu_ti_init(void)
197 double power_peak = 0.0;
198 double power_scale = 0.0;
200 tmgr_trace_t power_trace = NULL;
201 e_surf_resource_state_t state_initial = SURF_RESOURCE_OFF;
202 tmgr_trace_t state_trace = NULL;
204 power_peak = get_cpu_power(A_surfxml_host_power);
205 surf_parse_get_double(&power_scale, A_surfxml_host_availability);
206 power_trace = tmgr_trace_new(A_surfxml_host_availability_file);
207 surf_parse_get_int(&core, A_surfxml_host_core);
209 xbt_assert0((A_surfxml_host_state == A_surfxml_host_state_ON) ||
210 (A_surfxml_host_state == A_surfxml_host_state_OFF),
212 if (A_surfxml_host_state == A_surfxml_host_state_ON)
213 state_initial = SURF_RESOURCE_ON;
214 if (A_surfxml_host_state == A_surfxml_host_state_OFF)
215 state_initial = SURF_RESOURCE_OFF;
216 state_trace = tmgr_trace_new(A_surfxml_host_state_file);
218 current_property_set = xbt_dict_new();
219 cpu_ti_new(xbt_strdup(A_surfxml_host_id), power_peak, power_scale,
220 power_trace, core, state_initial, state_trace,
221 current_property_set);
225 static void add_traces_cpu_ti(void)
227 xbt_dict_cursor_t cursor = NULL;
228 char *trace_name, *elm;
230 static int called = 0;
236 /* connect all traces relative to hosts */
237 xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
238 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
239 cpu_ti_t cpu = surf_model_resource_by_name(surf_cpu_model, elm);
241 xbt_assert1(cpu, "Host %s undefined", elm);
242 xbt_assert1(trace, "Trace %s undefined", trace_name);
244 if (cpu->state_event) {
245 DEBUG1("Trace already configured for this CPU(%s), ignoring it",
249 DEBUG2("Add state trace: %s to CPU(%s)", trace_name, elm);
250 cpu->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, cpu);
253 xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
254 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
255 cpu_ti_t cpu = surf_model_resource_by_name(surf_cpu_model, elm);
257 xbt_assert1(cpu, "Host %s undefined", elm);
258 xbt_assert1(trace, "Trace %s undefined", trace_name);
260 DEBUG2("Add power trace: %s to CPU(%s)", trace_name, elm);
261 if (cpu->avail_trace)
262 surf_cpu_ti_free_tmgr(cpu->avail_trace);
264 cpu->avail_trace = cpu_ti_parse_trace(trace, cpu->power_scale);
266 /* add a fake trace event if periodicity == 0 */
267 if (trace && xbt_dynar_length(trace->event_list) > 1) {
269 xbt_dynar_get_cpy(trace->event_list,
270 xbt_dynar_length(trace->event_list) - 1, &val);
271 if (val.delta == 0) {
272 tmgr_trace_t empty_trace;
273 empty_trace = tmgr_empty_trace_new();
275 tmgr_history_add_trace(history, empty_trace,
276 cpu->avail_trace->last_time, 0, cpu);
282 static void cpu_ti_define_callbacks(const char *file)
284 surf_parse_reset_parser();
285 surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_ti_init);
286 surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces_cpu_ti);
289 static int cpu_ti_resource_used(void *resource_id)
291 cpu_ti_t cpu = resource_id;
292 return xbt_swag_size(cpu->action_set);
295 static int cpu_ti_action_unref(surf_action_t action)
298 if (!action->refcount) {
299 xbt_swag_remove(action, action->state_set);
300 /* remove from action_set */
301 xbt_swag_remove(action, ACTION_GET_CPU(action)->action_set);
302 /* remove from heap */
303 xbt_heap_remove(cpu_ti_action_heap,
304 ((surf_action_cpu_ti_t) action)->index_heap);
305 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
312 static void cpu_ti_action_cancel(surf_action_t action)
314 surf_action_state_set(action, SURF_ACTION_FAILED);
315 xbt_heap_remove(cpu_ti_action_heap,
316 ((surf_action_cpu_ti_t) action)->index_heap);
317 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
321 static void cpu_ti_action_state_set(surf_action_t action,
322 e_surf_action_state_t state)
324 surf_action_state_set(action, state);
325 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
330 * \brief Update the remaining amount of actions
332 * \param cpu Cpu on which the actions are running
333 * \param now Current time
335 static void cpu_ti_update_remaining_amount(cpu_ti_t cpu, double now)
337 #define GENERIC_ACTION(action) action->generic_action
339 surf_action_cpu_ti_t action;
341 /* already updated */
342 if (cpu->last_update >= now)
345 /* calcule the surface */
347 surf_cpu_ti_integrate_trace(cpu->avail_trace, cpu->last_update,
348 now) * cpu->power_peak;
349 DEBUG2("Flops total: %lf, Last update %lf", area_total,
352 xbt_swag_foreach(action, cpu->action_set) {
353 /* action not running, skip it */
354 if (GENERIC_ACTION(action).state_set !=
355 surf_cpu_model->states.running_action_set)
358 /* bogus priority, skip it */
359 if (GENERIC_ACTION(action).priority <= 0)
362 /* action suspended, skip it */
363 if (action->suspended != 0)
366 /* action don't need update */
367 if (GENERIC_ACTION(action).start >= now)
370 /* skip action that are finishing now */
371 if (GENERIC_ACTION(action).finish >= 0
372 && GENERIC_ACTION(action).finish <= now)
375 /* update remaining */
376 double_update(&(GENERIC_ACTION(action).remains),
377 area_total / (cpu->sum_priority *
378 GENERIC_ACTION(action).priority));
379 DEBUG2("Update remaining action(%p) remaining %lf", action,
380 GENERIC_ACTION(action).remains);
382 cpu->last_update = now;
383 #undef GENERIC_ACTION
387 * \brief Update the finish date of action if necessary
389 * \param cpu Cpu on which the actions are running
390 * \param now Current time
392 static void cpu_ti_update_action_finish_date(cpu_ti_t cpu, double now)
394 #define GENERIC_ACTION(action) action->generic_action
395 surf_action_cpu_ti_t action;
396 double sum_priority = 0.0, total_area, min_finish = -1;
398 /* update remaning amount of actions */
399 cpu_ti_update_remaining_amount(cpu, now);
401 xbt_swag_foreach(action, cpu->action_set) {
402 /* action not running, skip it */
403 if (GENERIC_ACTION(action).state_set !=
404 surf_cpu_model->states.running_action_set)
407 /* bogus priority, skip it */
408 if (GENERIC_ACTION(action).priority <= 0)
411 /* action suspended, skip it */
412 if (action->suspended != 0)
415 sum_priority += 1.0 / GENERIC_ACTION(action).priority;
417 cpu->sum_priority = sum_priority;
419 xbt_swag_foreach(action, cpu->action_set) {
421 /* action not running, skip it */
422 if (GENERIC_ACTION(action).state_set !=
423 surf_cpu_model->states.running_action_set)
426 /* verify if the action is really running on cpu */
427 if (action->suspended == 0 && GENERIC_ACTION(action).priority > 0) {
428 /* total area needed to finish the action. Used in trace integration */
430 (GENERIC_ACTION(action).remains) * sum_priority *
431 GENERIC_ACTION(action).priority;
433 total_area /= cpu->power_peak;
435 GENERIC_ACTION(action).finish =
436 surf_cpu_ti_solve_trace(cpu->avail_trace, now, total_area);
437 /* verify which event will happen before (max_duration or finish time) */
438 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
439 (GENERIC_ACTION(action).start +
440 GENERIC_ACTION(action).max_duration <
441 GENERIC_ACTION(action).finish))
442 min_finish = GENERIC_ACTION(action).start +
443 GENERIC_ACTION(action).max_duration;
445 min_finish = GENERIC_ACTION(action).finish;
447 /* put the max duration time on heap */
448 if (GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
450 (GENERIC_ACTION(action).start +
451 GENERIC_ACTION(action).max_duration);
453 /* add in action heap */
454 DEBUG2("action(%p) index %d", action, action->index_heap);
455 if (action->index_heap >= 0) {
456 surf_action_cpu_ti_t heap_act =
457 xbt_heap_remove(cpu_ti_action_heap, action->index_heap);
458 if (heap_act != action)
461 if (min_finish != NO_MAX_DURATION)
462 xbt_heap_push(cpu_ti_action_heap, action, min_finish);
465 ("Update finish time: Cpu(%s) Action: %p, Start Time: %lf Finish Time: %lf Max duration %lf",
466 cpu->generic_resource.name, action, GENERIC_ACTION(action).start,
467 GENERIC_ACTION(action).finish,
468 GENERIC_ACTION(action).max_duration);
470 /* remove from modified cpu */
471 xbt_swag_remove(cpu, cpu_ti_modified_cpu);
472 #undef GENERIC_ACTION
475 static double cpu_ti_share_resources(double now)
477 cpu_ti_t cpu, cpu_next;
478 double min_action_duration = -1;
480 /* iterates over modified cpus to update share resources */
481 xbt_swag_foreach_safe(cpu, cpu_next, cpu_ti_modified_cpu) {
482 cpu_ti_update_action_finish_date(cpu, now);
484 /* get the min next event if heap not empty */
485 if (xbt_heap_size(cpu_ti_action_heap) > 0)
486 min_action_duration = xbt_heap_maxkey(cpu_ti_action_heap) - now;
488 DEBUG1("Share resources, min next event date: %lf", min_action_duration);
490 return min_action_duration;
493 static void cpu_ti_update_actions_state(double now, double delta)
495 #define GENERIC_ACTION(action) action->generic_action
496 surf_action_cpu_ti_t action;
497 while ((xbt_heap_size(cpu_ti_action_heap) > 0)
498 && (xbt_heap_maxkey(cpu_ti_action_heap) <= now)) {
499 action = xbt_heap_pop(cpu_ti_action_heap);
500 DEBUG1("Action %p: finish", action);
501 GENERIC_ACTION(action).finish = surf_get_clock();
502 /* set the remains to 0 due to precision problems when updating the remaining amount */
503 GENERIC_ACTION(action).remains = 0;
504 cpu_ti_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
505 /* update remaining amout of all actions */
506 cpu_ti_update_remaining_amount(action->cpu, surf_get_clock());
508 #undef GENERIC_ACTION
511 static void cpu_ti_update_resource_state(void *id,
512 tmgr_trace_event_t event_type,
513 double value, double date)
516 surf_action_cpu_ti_t action;
518 if (event_type == cpu->power_event) {
519 tmgr_trace_t power_trace;
520 surf_cpu_ti_tgmr_t trace;
523 DEBUG3("Finish trace date: %lf value %lf date %lf", surf_get_clock(),
525 /* update remaining of actions and put in modified cpu swag */
526 cpu_ti_update_remaining_amount(cpu, date);
527 xbt_swag_insert(cpu, cpu_ti_modified_cpu);
529 power_trace = cpu->avail_trace->power_trace;
530 xbt_dynar_get_cpy(power_trace->event_list,
531 xbt_dynar_length(power_trace->event_list) - 1, &val);
533 surf_cpu_ti_free_tmgr(cpu->avail_trace);
534 cpu->power_scale = val.value;
536 trace = xbt_new0(s_surf_cpu_ti_tgmr_t, 1);
537 trace->type = TRACE_FIXED;
538 trace->value = val.value;
539 DEBUG1("value %lf", val.value);
541 cpu->avail_trace = trace;
543 if (tmgr_trace_event_free(event_type))
544 cpu->power_event = NULL;
546 } else if (event_type == cpu->state_event) {
548 cpu->state_current = SURF_RESOURCE_ON;
550 cpu->state_current = SURF_RESOURCE_OFF;
552 /* put all action running on cpu to failed */
553 xbt_swag_foreach(action, cpu->action_set) {
554 if (surf_action_state_get((surf_action_t) action) ==
556 || surf_action_state_get((surf_action_t) action) ==
558 || surf_action_state_get((surf_action_t) action) ==
559 SURF_ACTION_NOT_IN_THE_SYSTEM) {
560 action->generic_action.finish = date;
561 cpu_ti_action_state_set((surf_action_t) action,
563 if (action->index_heap >= 0) {
564 surf_action_cpu_ti_t heap_act =
565 xbt_heap_remove(cpu_ti_action_heap, action->index_heap);
566 if (heap_act != action)
572 if (tmgr_trace_event_free(event_type))
573 cpu->state_event = NULL;
575 CRITICAL0("Unknown event ! \n");
582 static surf_action_t cpu_ti_execute(void *cpu, double size)
584 surf_action_cpu_ti_t action = NULL;
587 XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
589 surf_action_new(sizeof(s_surf_action_cpu_ti_t), size, surf_cpu_model,
590 CPU->state_current != SURF_RESOURCE_ON);
592 action->index_heap = -1;
594 xbt_swag_insert(CPU, cpu_ti_modified_cpu);
596 xbt_swag_insert(action, CPU->action_set);
598 action->suspended = 0; /* Should be useless because of the
599 calloc but it seems to help valgrind... */
602 return (surf_action_t) action;
605 static void cpu_ti_action_update_index_heap(void *action, int i)
607 ((surf_action_cpu_ti_t) action)->index_heap = i;
610 static surf_action_t cpu_ti_action_sleep(void *cpu, double duration)
612 surf_action_cpu_ti_t action = NULL;
615 duration = MAX(duration, MAXMIN_PRECISION);
617 XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
618 action = (surf_action_cpu_ti_t) cpu_ti_execute(cpu, 1.0);
619 action->generic_action.max_duration = duration;
620 action->suspended = 2;
621 if (duration == NO_MAX_DURATION) {
622 /* Move to the *end* of the corresponding action set. This convention
623 is used to speed up update_resource_state */
624 xbt_swag_remove(action, ((surf_action_t) action)->state_set);
625 ((surf_action_t) action)->state_set =
626 cpu_ti_running_action_set_that_does_not_need_being_checked;
627 xbt_swag_insert(action, ((surf_action_t) action)->state_set);
630 return (surf_action_t) action;
633 static void cpu_ti_action_suspend(surf_action_t action)
635 XBT_IN1("(%p)", action);
636 if (((surf_action_cpu_ti_t) action)->suspended != 2) {
637 ((surf_action_cpu_ti_t) action)->suspended = 1;
638 xbt_heap_remove(cpu_ti_action_heap,
639 ((surf_action_cpu_ti_t) action)->index_heap);
640 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
645 static void cpu_ti_action_resume(surf_action_t action)
647 XBT_IN1("(%p)", action);
648 if (((surf_action_cpu_ti_t) action)->suspended != 2) {
649 ((surf_action_cpu_ti_t) action)->suspended = 0;
650 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
655 static int cpu_ti_action_is_suspended(surf_action_t action)
657 return (((surf_action_cpu_ti_t) action)->suspended == 1);
660 static void cpu_ti_action_set_max_duration(surf_action_t action,
663 surf_action_cpu_ti_t ACT = (surf_action_cpu_ti_t) action;
666 XBT_IN2("(%p,%g)", action, duration);
668 action->max_duration = duration;
672 (action->start + action->max_duration) <
673 action->finish ? (action->start +
674 action->max_duration) : action->finish;
676 min_finish = action->finish;
678 /* add in action heap */
679 if (ACT->index_heap >= 0) {
680 surf_action_cpu_ti_t heap_act =
681 xbt_heap_remove(cpu_ti_action_heap, ACT->index_heap);
685 xbt_heap_push(cpu_ti_action_heap, ACT, min_finish);
690 static void cpu_ti_action_set_priority(surf_action_t action,
693 XBT_IN2("(%p,%g)", action, priority);
694 action->priority = priority;
695 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
699 static double cpu_ti_action_get_remains(surf_action_t action)
701 XBT_IN1("(%p)", action);
702 cpu_ti_update_remaining_amount((cpu_ti_t)
703 ((surf_action_cpu_ti_t) action)->cpu,
705 return action->remains;
709 static e_surf_resource_state_t cpu_ti_get_state(void *cpu)
711 return ((cpu_ti_t) cpu)->state_current;
714 static double cpu_ti_get_speed(void *cpu, double load)
716 return load * (((cpu_ti_t) cpu)->power_peak);
720 * \brief Auxiliary function to update the CPU power scale.
722 * This function uses the trace structure to return the power scale at the determined time a.
723 * \param trace Trace structure to search the updated power scale
725 * \return CPU power scale
727 static double surf_cpu_ti_get_power_scale(surf_cpu_ti_tgmr_t trace,
734 reduced_a = a - floor(a / trace->last_time) * trace->last_time;
736 surf_cpu_ti_binary_search(trace->trace->time_points, reduced_a, 0,
737 trace->trace->nb_points - 1);
738 xbt_dynar_get_cpy(trace->power_trace->event_list, 0, &val);
742 static double cpu_ti_get_available_speed(void *cpu)
746 surf_cpu_ti_get_power_scale(CPU->avail_trace, surf_get_clock());
747 /* number between 0 and 1 */
748 return CPU->power_scale;
751 static void cpu_ti_create_resource(char *name, double power_peak,
753 tmgr_trace_t power_trace,
755 e_surf_resource_state_t state_initial,
756 tmgr_trace_t state_trace,
757 xbt_dict_t cpu_properties)
759 xbt_assert0(core==1,"Multi-core not handled with this model yet");
760 cpu_ti_new(name, power_peak, power_scale, power_trace, core,
761 state_initial, state_trace, cpu_properties);
764 static void cpu_ti_finalize(void)
767 xbt_dict_cursor_t cursor;
769 xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key,
772 xbt_swag_free(CPU->action_set);
773 surf_cpu_ti_free_tmgr(CPU->avail_trace);
776 surf_model_exit(surf_cpu_model);
777 surf_cpu_model = NULL;
780 (cpu_ti_running_action_set_that_does_not_need_being_checked);
781 xbt_swag_free(cpu_ti_modified_cpu);
782 cpu_ti_running_action_set_that_does_not_need_being_checked = NULL;
783 xbt_heap_free(cpu_ti_action_heap);
786 static void surf_cpu_ti_model_init_internal(void)
788 s_surf_action_t action;
791 surf_cpu_model = surf_model_init();
793 cpu_ti_running_action_set_that_does_not_need_being_checked =
794 xbt_swag_new(xbt_swag_offset(action, state_hookup));
796 cpu_ti_modified_cpu =
797 xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
799 surf_cpu_model->name = "CPU_TI";
801 surf_cpu_model->action_unref = cpu_ti_action_unref;
802 surf_cpu_model->action_cancel = cpu_ti_action_cancel;
803 surf_cpu_model->action_state_set = cpu_ti_action_state_set;
805 surf_cpu_model->model_private->resource_used = cpu_ti_resource_used;
806 surf_cpu_model->model_private->share_resources = cpu_ti_share_resources;
807 surf_cpu_model->model_private->update_actions_state =
808 cpu_ti_update_actions_state;
809 surf_cpu_model->model_private->update_resource_state =
810 cpu_ti_update_resource_state;
811 surf_cpu_model->model_private->finalize = cpu_ti_finalize;
813 surf_cpu_model->suspend = cpu_ti_action_suspend;
814 surf_cpu_model->resume = cpu_ti_action_resume;
815 surf_cpu_model->is_suspended = cpu_ti_action_is_suspended;
816 surf_cpu_model->set_max_duration = cpu_ti_action_set_max_duration;
817 surf_cpu_model->set_priority = cpu_ti_action_set_priority;
818 surf_cpu_model->get_remains = cpu_ti_action_get_remains;
820 surf_cpu_model->extension.cpu.execute = cpu_ti_execute;
821 surf_cpu_model->extension.cpu.sleep = cpu_ti_action_sleep;
823 surf_cpu_model->extension.cpu.get_state = cpu_ti_get_state;
824 surf_cpu_model->extension.cpu.get_speed = cpu_ti_get_speed;
825 surf_cpu_model->extension.cpu.get_available_speed =
826 cpu_ti_get_available_speed;
827 surf_cpu_model->extension.cpu.create_resource = cpu_ti_create_resource;
828 surf_cpu_model->extension.cpu.add_traces = add_traces_cpu_ti;
830 cpu_ti_action_heap = xbt_heap_new(8, NULL);
831 xbt_heap_set_update_callback(cpu_ti_action_heap,
832 cpu_ti_action_update_index_heap);
836 void surf_cpu_model_init_ti(const char *filename)
840 surf_cpu_ti_model_init_internal();
841 cpu_ti_define_callbacks(filename);
842 xbt_dynar_push(model_list, &surf_cpu_model);
847 * \brief Integrate trace
849 * Wrapper around surf_cpu_integrate_trace_simple() to get
852 * \param trace Trace structure.
853 * \param a Begin of interval
854 * \param b End of interval
855 * \return the integrate value. -1 if an error occurs.
857 static double surf_cpu_ti_integrate_trace(surf_cpu_ti_tgmr_t trace,
863 int a_index, b_index;
865 if ((a < 0.0) || (a > b)) {
867 ("Error, invalid integration interval [%.2f,%.2f]. You probably have a task executing with negative computation amount. Check your code.",
874 if (trace->type == TRACE_FIXED) {
875 return ((b - a) * trace->value);
878 if (ceil(a / trace->last_time) == a / trace->last_time)
879 a_index = 1 + (int) (ceil(a / trace->last_time));
881 a_index = (int) (ceil(a / trace->last_time));
883 b_index = (int) (floor(b / trace->last_time));
885 if (a_index > b_index) { /* Same chunk */
886 return surf_cpu_ti_integrate_trace_simple(trace->trace,
888 1) * trace->last_time,
894 first_chunk = surf_cpu_ti_integrate_trace_simple(trace->trace,
899 middle_chunk = (b_index - a_index) * trace->total;
900 last_chunk = surf_cpu_ti_integrate_trace_simple(trace->trace,
906 DEBUG3("first_chunk=%.2f middle_chunk=%.2f last_chunk=%.2f\n",
907 first_chunk, middle_chunk, last_chunk);
909 return (first_chunk + middle_chunk + last_chunk);
913 * \brief Auxiliary function to calculate the integral between a and b.
914 * It simply calculates the integral at point a and b and returns the difference
916 * \param trace Trace structure
917 * \param a Initial point
918 * \param b Final point
921 static double surf_cpu_ti_integrate_trace_simple(surf_cpu_ti_trace_t trace,
924 return surf_cpu_ti_integrate_trace_simple_point(trace,
926 surf_cpu_ti_integrate_trace_simple_point(trace, a);
930 * \brief Auxiliary function to calculate the integral at point a.
931 * \param trace Trace structure
935 static double surf_cpu_ti_integrate_trace_simple_point(surf_cpu_ti_trace_t
942 surf_cpu_ti_binary_search(trace->time_points, a, 0,
943 trace->nb_points - 1);
944 integral += trace->integral[ind];
946 ("a %lf ind %d integral %lf ind + 1 %lf ind %lf time +1 %lf time %lf",
947 a, ind, integral, trace->integral[ind + 1], trace->integral[ind],
948 trace->time_points[ind + 1], trace->time_points[ind]);
949 double_update(&a_aux, trace->time_points[ind]);
952 ((trace->integral[ind + 1] -
953 trace->integral[ind]) / (trace->time_points[ind + 1] -
954 trace->time_points[ind])) * (a -
958 DEBUG2("Integral a %lf = %lf", a, integral);
964 * \brief Calculate the time needed to execute "amount" on cpu.
966 * Here, amount can span multiple trace periods
968 * \param trace CPU trace structure
969 * \param a Initial time
970 * \param amount Amount to be executed
973 static double surf_cpu_ti_solve_trace(surf_cpu_ti_tgmr_t trace, double a,
978 double reduced_amount;
982 /* Fix very small negative numbers */
983 if ((a < 0.0) && (a > -EPSILON)) {
986 if ((amount < 0.0) && (amount > -EPSILON)) {
991 if ((a < 0.0) || (amount < 0.0)) {
993 ("Error, invalid parameters [a = %.2f, amount = %.2f]. You probably have a task executing with negative computation amount. Check your code.",
998 /* At this point, a and amount are positive */
1000 if (amount < EPSILON)
1003 /* Is the trace fixed ? */
1004 if (trace->type == TRACE_FIXED) {
1005 return (a + (amount / trace->value));
1008 DEBUG2("amount %lf total %lf", amount, trace->total);
1009 /* Reduce the problem to one where amount <= trace_total */
1010 quotient = (int) (floor(amount / trace->total));
1011 reduced_amount = (trace->total) * ((amount / trace->total) -
1012 floor(amount / trace->total));
1013 reduced_a = a - (trace->last_time) * (int) (floor(a / trace->last_time));
1015 DEBUG3("Quotient: %d reduced_amount: %lf reduced_a: %lf", quotient,
1016 reduced_amount, reduced_a);
1018 /* Now solve for new_amount which is <= trace_total */
1020 fprintf(stderr,"reduced_a = %.2f\n",reduced_a);
1021 fprintf(stderr,"reduced_amount = %.2f\n",reduced_amount);
1024 surf_cpu_ti_solve_trace_somewhat_simple(trace, reduced_a,
1027 /* Re-map to the original b and amount */
1028 b = (trace->last_time) * (int) (floor(a / trace->last_time)) +
1029 (quotient * trace->last_time) + reduced_b;
1034 * \brief Auxiliary function to solve integral
1036 * Here, amount is <= trace->total
1037 * and a <=trace->last_time
1040 static double surf_cpu_ti_solve_trace_somewhat_simple(surf_cpu_ti_tgmr_t
1044 double amount_till_end;
1047 DEBUG2("Solve integral: [%.2f, amount=%.2f]", a, amount);
1049 surf_cpu_ti_integrate_trace(trace, a, trace->last_time);
1051 fprintf(stderr,"amount_till_end=%.2f\n",amount_till_end);
1054 if (amount_till_end > amount) {
1055 b = surf_cpu_ti_solve_trace_simple(trace->trace, a, amount);
1057 b = trace->last_time +
1058 surf_cpu_ti_solve_trace_simple(trace->trace, 0.0,
1059 amount - amount_till_end);
1065 * \brief Auxiliary function to solve integral.
1066 * It returns the date when the requested amount of flops is available
1067 * \param trace Trace structure
1068 * \param a Initial point
1069 * \param amount Amount of flops
1070 * \return The date when amount is available.
1072 static double surf_cpu_ti_solve_trace_simple(surf_cpu_ti_trace_t trace,
1073 double a, double amount)
1078 integral_a = surf_cpu_ti_integrate_trace_simple_point(trace, a);
1080 surf_cpu_ti_binary_search(trace->integral, integral_a + amount, 0,
1081 trace->nb_points - 1);
1082 time = trace->time_points[ind];
1084 (integral_a + amount -
1085 trace->integral[ind]) / ((trace->integral[ind + 1] -
1086 trace->integral[ind]) /
1087 (trace->time_points[ind + 1] -
1088 trace->time_points[ind]));
1094 * \brief Binary search in array.
1095 * It returns the first point of the interval in which "a" is.
1096 * \param array Array
1097 * \param a Value to search
1098 * \param low Low bound to search in array
1099 * \param high Upper bound to search in array
1100 * \return Index of point
1102 static int surf_cpu_ti_binary_search(double *array, double a, int low,
1105 int mid = low + (high - low) / 2;
1106 DEBUG5("a %lf low %d high %d mid %d value %lf", a, low, high, mid,
1108 /* a == array[mid] */
1109 if (array[mid] == a)
1111 /* a is between mid and mid+1 */
1112 if (array[mid] < a && array[mid + 1] > a)
1116 return surf_cpu_ti_binary_search(array, a, mid + 1, high);
1118 return surf_cpu_ti_binary_search(array, a, low, mid - 1);