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 surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_ti_init);
285 surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces_cpu_ti);
288 static int cpu_ti_resource_used(void *resource_id)
290 cpu_ti_t cpu = resource_id;
291 return xbt_swag_size(cpu->action_set);
294 static int cpu_ti_action_unref(surf_action_t action)
297 if (!action->refcount) {
298 xbt_swag_remove(action, action->state_set);
299 /* remove from action_set */
300 xbt_swag_remove(action, ACTION_GET_CPU(action)->action_set);
301 /* remove from heap */
302 xbt_heap_remove(cpu_ti_action_heap,
303 ((surf_action_cpu_ti_t) action)->index_heap);
304 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
305 surf_action_free(&action);
311 static void cpu_ti_action_cancel(surf_action_t action)
313 surf_action_state_set(action, SURF_ACTION_FAILED);
314 xbt_heap_remove(cpu_ti_action_heap,
315 ((surf_action_cpu_ti_t) action)->index_heap);
316 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
320 static void cpu_ti_action_state_set(surf_action_t action,
321 e_surf_action_state_t state)
323 surf_action_state_set(action, state);
324 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
329 * \brief Update the remaining amount of actions
331 * \param cpu Cpu on which the actions are running
332 * \param now Current time
334 static void cpu_ti_update_remaining_amount(cpu_ti_t cpu, double now)
336 #define GENERIC_ACTION(action) action->generic_action
338 surf_action_cpu_ti_t action;
340 /* already updated */
341 if (cpu->last_update >= now)
344 /* calcule the surface */
346 surf_cpu_ti_integrate_trace(cpu->avail_trace, cpu->last_update,
347 now) * cpu->power_peak;
348 DEBUG2("Flops total: %lf, Last update %lf", area_total,
351 xbt_swag_foreach(action, cpu->action_set) {
352 /* action not running, skip it */
353 if (GENERIC_ACTION(action).state_set !=
354 surf_cpu_model->states.running_action_set)
357 /* bogus priority, skip it */
358 if (GENERIC_ACTION(action).priority <= 0)
361 /* action suspended, skip it */
362 if (action->suspended != 0)
365 /* action don't need update */
366 if (GENERIC_ACTION(action).start >= now)
369 /* skip action that are finishing now */
370 if (GENERIC_ACTION(action).finish >= 0
371 && GENERIC_ACTION(action).finish <= now)
374 /* update remaining */
375 double_update(&(GENERIC_ACTION(action).remains),
376 area_total / (cpu->sum_priority *
377 GENERIC_ACTION(action).priority));
378 DEBUG2("Update remaining action(%p) remaining %lf", action,
379 GENERIC_ACTION(action).remains);
381 cpu->last_update = now;
382 #undef GENERIC_ACTION
386 * \brief Update the finish date of action if necessary
388 * \param cpu Cpu on which the actions are running
389 * \param now Current time
391 static void cpu_ti_update_action_finish_date(cpu_ti_t cpu, double now)
393 #define GENERIC_ACTION(action) action->generic_action
394 surf_action_cpu_ti_t action;
395 double sum_priority = 0.0, total_area, min_finish = -1;
397 /* update remaning amount of actions */
398 cpu_ti_update_remaining_amount(cpu, now);
400 xbt_swag_foreach(action, cpu->action_set) {
401 /* action not running, skip it */
402 if (GENERIC_ACTION(action).state_set !=
403 surf_cpu_model->states.running_action_set)
406 /* bogus priority, skip it */
407 if (GENERIC_ACTION(action).priority <= 0)
410 /* action suspended, skip it */
411 if (action->suspended != 0)
414 sum_priority += 1.0 / GENERIC_ACTION(action).priority;
416 cpu->sum_priority = sum_priority;
418 xbt_swag_foreach(action, cpu->action_set) {
420 /* action not running, skip it */
421 if (GENERIC_ACTION(action).state_set !=
422 surf_cpu_model->states.running_action_set)
425 /* verify if the action is really running on cpu */
426 if (action->suspended == 0 && GENERIC_ACTION(action).priority > 0) {
427 /* total area needed to finish the action. Used in trace integration */
429 (GENERIC_ACTION(action).remains) * sum_priority *
430 GENERIC_ACTION(action).priority;
432 total_area /= cpu->power_peak;
434 GENERIC_ACTION(action).finish =
435 surf_cpu_ti_solve_trace(cpu->avail_trace, now, total_area);
436 /* verify which event will happen before (max_duration or finish time) */
437 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
438 (GENERIC_ACTION(action).start +
439 GENERIC_ACTION(action).max_duration <
440 GENERIC_ACTION(action).finish))
441 min_finish = GENERIC_ACTION(action).start +
442 GENERIC_ACTION(action).max_duration;
444 min_finish = GENERIC_ACTION(action).finish;
446 /* put the max duration time on heap */
447 if (GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
449 (GENERIC_ACTION(action).start +
450 GENERIC_ACTION(action).max_duration);
452 /* add in action heap */
453 DEBUG2("action(%p) index %d", action, action->index_heap);
454 if (action->index_heap >= 0) {
455 surf_action_cpu_ti_t heap_act =
456 xbt_heap_remove(cpu_ti_action_heap, action->index_heap);
457 if (heap_act != action)
460 if (min_finish != NO_MAX_DURATION)
461 xbt_heap_push(cpu_ti_action_heap, action, min_finish);
464 ("Update finish time: Cpu(%s) Action: %p, Start Time: %lf Finish Time: %lf Max duration %lf",
465 cpu->generic_resource.name, action, GENERIC_ACTION(action).start,
466 GENERIC_ACTION(action).finish,
467 GENERIC_ACTION(action).max_duration);
469 /* remove from modified cpu */
470 xbt_swag_remove(cpu, cpu_ti_modified_cpu);
471 #undef GENERIC_ACTION
474 static double cpu_ti_share_resources(double now)
476 cpu_ti_t cpu, cpu_next;
477 double min_action_duration = -1;
479 /* iterates over modified cpus to update share resources */
480 xbt_swag_foreach_safe(cpu, cpu_next, cpu_ti_modified_cpu) {
481 cpu_ti_update_action_finish_date(cpu, now);
483 /* get the min next event if heap not empty */
484 if (xbt_heap_size(cpu_ti_action_heap) > 0)
485 min_action_duration = xbt_heap_maxkey(cpu_ti_action_heap) - now;
487 DEBUG1("Share resources, min next event date: %lf", min_action_duration);
489 return min_action_duration;
492 static void cpu_ti_update_actions_state(double now, double delta)
494 #define GENERIC_ACTION(action) action->generic_action
495 surf_action_cpu_ti_t action;
496 while ((xbt_heap_size(cpu_ti_action_heap) > 0)
497 && (xbt_heap_maxkey(cpu_ti_action_heap) <= now)) {
498 action = xbt_heap_pop(cpu_ti_action_heap);
499 DEBUG1("Action %p: finish", action);
500 GENERIC_ACTION(action).finish = surf_get_clock();
501 /* set the remains to 0 due to precision problems when updating the remaining amount */
502 GENERIC_ACTION(action).remains = 0;
503 cpu_ti_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
504 /* update remaining amout of all actions */
505 cpu_ti_update_remaining_amount(action->cpu, surf_get_clock());
507 #undef GENERIC_ACTION
510 static void cpu_ti_update_resource_state(void *id,
511 tmgr_trace_event_t event_type,
512 double value, double date)
515 surf_action_cpu_ti_t action;
517 if (event_type == cpu->power_event) {
518 tmgr_trace_t power_trace;
519 surf_cpu_ti_tgmr_t trace;
522 DEBUG3("Finish trace date: %lf value %lf date %lf", surf_get_clock(),
524 /* update remaining of actions and put in modified cpu swag */
525 cpu_ti_update_remaining_amount(cpu, date);
526 xbt_swag_insert(cpu, cpu_ti_modified_cpu);
528 power_trace = cpu->avail_trace->power_trace;
529 xbt_dynar_get_cpy(power_trace->event_list,
530 xbt_dynar_length(power_trace->event_list) - 1, &val);
532 surf_cpu_ti_free_tmgr(cpu->avail_trace);
533 cpu->power_scale = val.value;
535 trace = xbt_new0(s_surf_cpu_ti_tgmr_t, 1);
536 trace->type = TRACE_FIXED;
537 trace->value = val.value;
538 DEBUG1("value %lf", val.value);
540 cpu->avail_trace = trace;
542 if (tmgr_trace_event_free(event_type))
543 cpu->power_event = NULL;
545 } else if (event_type == cpu->state_event) {
547 cpu->state_current = SURF_RESOURCE_ON;
549 cpu->state_current = SURF_RESOURCE_OFF;
551 /* put all action running on cpu to failed */
552 xbt_swag_foreach(action, cpu->action_set) {
553 if (surf_action_state_get((surf_action_t) action) ==
555 || surf_action_state_get((surf_action_t) action) ==
557 || surf_action_state_get((surf_action_t) action) ==
558 SURF_ACTION_NOT_IN_THE_SYSTEM) {
559 action->generic_action.finish = date;
560 cpu_ti_action_state_set((surf_action_t) action,
562 if (action->index_heap >= 0) {
563 surf_action_cpu_ti_t heap_act =
564 xbt_heap_remove(cpu_ti_action_heap, action->index_heap);
565 if (heap_act != action)
571 if (tmgr_trace_event_free(event_type))
572 cpu->state_event = NULL;
574 CRITICAL0("Unknown event ! \n");
581 static surf_action_t cpu_ti_execute(void *cpu, double size)
583 surf_action_cpu_ti_t action = NULL;
586 XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
588 surf_action_new(sizeof(s_surf_action_cpu_ti_t), size, surf_cpu_model,
589 CPU->state_current != SURF_RESOURCE_ON);
591 action->index_heap = -1;
593 xbt_swag_insert(CPU, cpu_ti_modified_cpu);
595 xbt_swag_insert(action, CPU->action_set);
597 action->suspended = 0; /* Should be useless because of the
598 calloc but it seems to help valgrind... */
601 return (surf_action_t) action;
604 static void cpu_ti_action_update_index_heap(void *action, int i)
606 ((surf_action_cpu_ti_t) action)->index_heap = i;
609 static surf_action_t cpu_ti_action_sleep(void *cpu, double duration)
611 surf_action_cpu_ti_t action = NULL;
614 duration = MAX(duration, MAXMIN_PRECISION);
616 XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
617 action = (surf_action_cpu_ti_t) cpu_ti_execute(cpu, 1.0);
618 action->generic_action.max_duration = duration;
619 action->suspended = 2;
620 if (duration == NO_MAX_DURATION) {
621 /* Move to the *end* of the corresponding action set. This convention
622 is used to speed up update_resource_state */
623 xbt_swag_remove(action, ((surf_action_t) action)->state_set);
624 ((surf_action_t) action)->state_set =
625 cpu_ti_running_action_set_that_does_not_need_being_checked;
626 xbt_swag_insert(action, ((surf_action_t) action)->state_set);
629 return (surf_action_t) action;
632 static void cpu_ti_action_suspend(surf_action_t action)
634 XBT_IN1("(%p)", action);
635 if (((surf_action_cpu_ti_t) action)->suspended != 2) {
636 ((surf_action_cpu_ti_t) action)->suspended = 1;
637 xbt_heap_remove(cpu_ti_action_heap,
638 ((surf_action_cpu_ti_t) action)->index_heap);
639 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
644 static void cpu_ti_action_resume(surf_action_t action)
646 XBT_IN1("(%p)", action);
647 if (((surf_action_cpu_ti_t) action)->suspended != 2) {
648 ((surf_action_cpu_ti_t) action)->suspended = 0;
649 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
654 static int cpu_ti_action_is_suspended(surf_action_t action)
656 return (((surf_action_cpu_ti_t) action)->suspended == 1);
659 static void cpu_ti_action_set_max_duration(surf_action_t action,
662 surf_action_cpu_ti_t ACT = (surf_action_cpu_ti_t) action;
665 XBT_IN2("(%p,%g)", action, duration);
667 action->max_duration = duration;
671 (action->start + action->max_duration) <
672 action->finish ? (action->start +
673 action->max_duration) : action->finish;
675 min_finish = action->finish;
677 /* add in action heap */
678 if (ACT->index_heap >= 0) {
679 surf_action_cpu_ti_t heap_act =
680 xbt_heap_remove(cpu_ti_action_heap, ACT->index_heap);
684 xbt_heap_push(cpu_ti_action_heap, ACT, min_finish);
689 static void cpu_ti_action_set_priority(surf_action_t action,
692 XBT_IN2("(%p,%g)", action, priority);
693 action->priority = priority;
694 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
698 static double cpu_ti_action_get_remains(surf_action_t action)
700 XBT_IN1("(%p)", action);
701 cpu_ti_update_remaining_amount((cpu_ti_t)
702 ((surf_action_cpu_ti_t) action)->cpu,
704 return action->remains;
708 static e_surf_resource_state_t cpu_ti_get_state(void *cpu)
710 return ((cpu_ti_t) cpu)->state_current;
713 static double cpu_ti_get_speed(void *cpu, double load)
715 return load * (((cpu_ti_t) cpu)->power_peak);
719 * \brief Auxiliary function to update the CPU power scale.
721 * This function uses the trace structure to return the power scale at the determined time a.
722 * \param trace Trace structure to search the updated power scale
724 * \return CPU power scale
726 static double surf_cpu_ti_get_power_scale(surf_cpu_ti_tgmr_t trace,
733 reduced_a = a - floor(a / trace->last_time) * trace->last_time;
735 surf_cpu_ti_binary_search(trace->trace->time_points, reduced_a, 0,
736 trace->trace->nb_points - 1);
737 xbt_dynar_get_cpy(trace->power_trace->event_list, 0, &val);
741 static double cpu_ti_get_available_speed(void *cpu)
745 surf_cpu_ti_get_power_scale(CPU->avail_trace, surf_get_clock());
746 /* number between 0 and 1 */
747 return CPU->power_scale;
750 static void cpu_ti_create_resource(char *name, double power_peak,
752 tmgr_trace_t power_trace,
754 e_surf_resource_state_t state_initial,
755 tmgr_trace_t state_trace,
756 xbt_dict_t cpu_properties)
758 xbt_assert0(core==1,"Multi-core not handled with this model yet");
759 cpu_ti_new(name, power_peak, power_scale, power_trace, core,
760 state_initial, state_trace, cpu_properties);
763 static void cpu_ti_finalize(void)
766 xbt_dict_cursor_t cursor;
768 xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key,
771 xbt_swag_free(CPU->action_set);
772 surf_cpu_ti_free_tmgr(CPU->avail_trace);
775 surf_model_exit(surf_cpu_model);
776 surf_cpu_model = NULL;
779 (cpu_ti_running_action_set_that_does_not_need_being_checked);
780 xbt_swag_free(cpu_ti_modified_cpu);
781 cpu_ti_running_action_set_that_does_not_need_being_checked = NULL;
782 xbt_heap_free(cpu_ti_action_heap);
785 static void surf_cpu_ti_model_init_internal(void)
787 s_surf_action_t action;
790 surf_cpu_model = surf_model_init();
792 cpu_ti_running_action_set_that_does_not_need_being_checked =
793 xbt_swag_new(xbt_swag_offset(action, state_hookup));
795 cpu_ti_modified_cpu =
796 xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
798 surf_cpu_model->name = "CPU_TI";
800 surf_cpu_model->action_unref = cpu_ti_action_unref;
801 surf_cpu_model->action_cancel = cpu_ti_action_cancel;
802 surf_cpu_model->action_state_set = cpu_ti_action_state_set;
804 surf_cpu_model->model_private->resource_used = cpu_ti_resource_used;
805 surf_cpu_model->model_private->share_resources = cpu_ti_share_resources;
806 surf_cpu_model->model_private->update_actions_state =
807 cpu_ti_update_actions_state;
808 surf_cpu_model->model_private->update_resource_state =
809 cpu_ti_update_resource_state;
810 surf_cpu_model->model_private->finalize = cpu_ti_finalize;
812 surf_cpu_model->suspend = cpu_ti_action_suspend;
813 surf_cpu_model->resume = cpu_ti_action_resume;
814 surf_cpu_model->is_suspended = cpu_ti_action_is_suspended;
815 surf_cpu_model->set_max_duration = cpu_ti_action_set_max_duration;
816 surf_cpu_model->set_priority = cpu_ti_action_set_priority;
817 surf_cpu_model->get_remains = cpu_ti_action_get_remains;
819 surf_cpu_model->extension.cpu.execute = cpu_ti_execute;
820 surf_cpu_model->extension.cpu.sleep = cpu_ti_action_sleep;
822 surf_cpu_model->extension.cpu.get_state = cpu_ti_get_state;
823 surf_cpu_model->extension.cpu.get_speed = cpu_ti_get_speed;
824 surf_cpu_model->extension.cpu.get_available_speed =
825 cpu_ti_get_available_speed;
826 surf_cpu_model->extension.cpu.create_resource = cpu_ti_create_resource;
827 surf_cpu_model->extension.cpu.add_traces = add_traces_cpu_ti;
829 cpu_ti_action_heap = xbt_heap_new(8, NULL);
830 xbt_heap_set_update_callback(cpu_ti_action_heap,
831 cpu_ti_action_update_index_heap);
835 void surf_cpu_model_init_ti(const char *filename)
839 surf_cpu_ti_model_init_internal();
840 cpu_ti_define_callbacks(filename);
841 xbt_dynar_push(model_list, &surf_cpu_model);
846 * \brief Integrate trace
848 * Wrapper around surf_cpu_integrate_trace_simple() to get
851 * \param trace Trace structure.
852 * \param a Begin of interval
853 * \param b End of interval
854 * \return the integrate value. -1 if an error occurs.
856 static double surf_cpu_ti_integrate_trace(surf_cpu_ti_tgmr_t trace,
862 int a_index, b_index;
864 if ((a < 0.0) || (a > b)) {
866 ("Error, invalid integration interval [%.2f,%.2f]. You probably have a task executing with negative computation amount. Check your code.",
873 if (trace->type == TRACE_FIXED) {
874 return ((b - a) * trace->value);
877 if (ceil(a / trace->last_time) == a / trace->last_time)
878 a_index = 1 + (int) (ceil(a / trace->last_time));
880 a_index = (int) (ceil(a / trace->last_time));
882 b_index = (int) (floor(b / trace->last_time));
884 if (a_index > b_index) { /* Same chunk */
885 return surf_cpu_ti_integrate_trace_simple(trace->trace,
887 1) * trace->last_time,
893 first_chunk = surf_cpu_ti_integrate_trace_simple(trace->trace,
898 middle_chunk = (b_index - a_index) * trace->total;
899 last_chunk = surf_cpu_ti_integrate_trace_simple(trace->trace,
905 DEBUG3("first_chunk=%.2f middle_chunk=%.2f last_chunk=%.2f\n",
906 first_chunk, middle_chunk, last_chunk);
908 return (first_chunk + middle_chunk + last_chunk);
912 * \brief Auxiliary function to calculate the integral between a and b.
913 * It simply calculates the integral at point a and b and returns the difference
915 * \param trace Trace structure
916 * \param a Initial point
917 * \param b Final point
920 static double surf_cpu_ti_integrate_trace_simple(surf_cpu_ti_trace_t trace,
923 return surf_cpu_ti_integrate_trace_simple_point(trace,
925 surf_cpu_ti_integrate_trace_simple_point(trace, a);
929 * \brief Auxiliary function to calculate the integral at point a.
930 * \param trace Trace structure
934 static double surf_cpu_ti_integrate_trace_simple_point(surf_cpu_ti_trace_t
941 surf_cpu_ti_binary_search(trace->time_points, a, 0,
942 trace->nb_points - 1);
943 integral += trace->integral[ind];
945 ("a %lf ind %d integral %lf ind + 1 %lf ind %lf time +1 %lf time %lf",
946 a, ind, integral, trace->integral[ind + 1], trace->integral[ind],
947 trace->time_points[ind + 1], trace->time_points[ind]);
948 double_update(&a_aux, trace->time_points[ind]);
951 ((trace->integral[ind + 1] -
952 trace->integral[ind]) / (trace->time_points[ind + 1] -
953 trace->time_points[ind])) * (a -
957 DEBUG2("Integral a %lf = %lf", a, integral);
963 * \brief Calculate the time needed to execute "amount" on cpu.
965 * Here, amount can span multiple trace periods
967 * \param trace CPU trace structure
968 * \param a Initial time
969 * \param amount Amount to be executed
972 static double surf_cpu_ti_solve_trace(surf_cpu_ti_tgmr_t trace, double a,
977 double reduced_amount;
981 /* Fix very small negative numbers */
982 if ((a < 0.0) && (a > -EPSILON)) {
985 if ((amount < 0.0) && (amount > -EPSILON)) {
990 if ((a < 0.0) || (amount < 0.0)) {
992 ("Error, invalid parameters [a = %.2f, amount = %.2f]. You probably have a task executing with negative computation amount. Check your code.",
997 /* At this point, a and amount are positive */
999 if (amount < EPSILON)
1002 /* Is the trace fixed ? */
1003 if (trace->type == TRACE_FIXED) {
1004 return (a + (amount / trace->value));
1007 DEBUG2("amount %lf total %lf", amount, trace->total);
1008 /* Reduce the problem to one where amount <= trace_total */
1009 quotient = (int) (floor(amount / trace->total));
1010 reduced_amount = (trace->total) * ((amount / trace->total) -
1011 floor(amount / trace->total));
1012 reduced_a = a - (trace->last_time) * (int) (floor(a / trace->last_time));
1014 DEBUG3("Quotient: %d reduced_amount: %lf reduced_a: %lf", quotient,
1015 reduced_amount, reduced_a);
1017 /* Now solve for new_amount which is <= trace_total */
1019 fprintf(stderr,"reduced_a = %.2f\n",reduced_a);
1020 fprintf(stderr,"reduced_amount = %.2f\n",reduced_amount);
1023 surf_cpu_ti_solve_trace_somewhat_simple(trace, reduced_a,
1026 /* Re-map to the original b and amount */
1027 b = (trace->last_time) * (int) (floor(a / trace->last_time)) +
1028 (quotient * trace->last_time) + reduced_b;
1033 * \brief Auxiliary function to solve integral
1035 * Here, amount is <= trace->total
1036 * and a <=trace->last_time
1039 static double surf_cpu_ti_solve_trace_somewhat_simple(surf_cpu_ti_tgmr_t
1043 double amount_till_end;
1046 DEBUG2("Solve integral: [%.2f, amount=%.2f]", a, amount);
1048 surf_cpu_ti_integrate_trace(trace, a, trace->last_time);
1050 fprintf(stderr,"amount_till_end=%.2f\n",amount_till_end);
1053 if (amount_till_end > amount) {
1054 b = surf_cpu_ti_solve_trace_simple(trace->trace, a, amount);
1056 b = trace->last_time +
1057 surf_cpu_ti_solve_trace_simple(trace->trace, 0.0,
1058 amount - amount_till_end);
1064 * \brief Auxiliary function to solve integral.
1065 * It returns the date when the requested amount of flops is available
1066 * \param trace Trace structure
1067 * \param a Initial point
1068 * \param amount Amount of flops
1069 * \return The date when amount is available.
1071 static double surf_cpu_ti_solve_trace_simple(surf_cpu_ti_trace_t trace,
1072 double a, double amount)
1077 integral_a = surf_cpu_ti_integrate_trace_simple_point(trace, a);
1079 surf_cpu_ti_binary_search(trace->integral, integral_a + amount, 0,
1080 trace->nb_points - 1);
1081 time = trace->time_points[ind];
1083 (integral_a + amount -
1084 trace->integral[ind]) / ((trace->integral[ind + 1] -
1085 trace->integral[ind]) /
1086 (trace->time_points[ind + 1] -
1087 trace->time_points[ind]));
1093 * \brief Binary search in array.
1094 * It returns the first point of the interval in which "a" is.
1095 * \param array Array
1096 * \param a Value to search
1097 * \param low Low bound to search in array
1098 * \param high Upper bound to search in array
1099 * \return Index of point
1101 static int surf_cpu_ti_binary_search(double *array, double a, int low,
1104 int mid = low + (high - low) / 2;
1105 DEBUG5("a %lf low %d high %d mid %d value %lf", a, low, high, mid,
1107 /* a == array[mid] */
1108 if (array[mid] == a)
1110 /* a is between mid and mid+1 */
1111 if (array[mid] < a && array[mid + 1] > a)
1115 return surf_cpu_ti_binary_search(array, a, mid + 1, high);
1117 return surf_cpu_ti_binary_search(array, a, low, mid - 1);