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");
23 static xbt_swag_t cpu_ti_running_action_set_that_does_not_need_being_checked = NULL;
24 static xbt_swag_t cpu_ti_modified_cpu = NULL;
25 static xbt_heap_t cpu_ti_action_heap;
27 /* prototypes of new trace functions */
28 static double surf_cpu_ti_integrate_trace(surf_cpu_ti_tgmr_t trace, double a,
32 static double surf_cpu_ti_solve_trace(surf_cpu_ti_tgmr_t trace, double a,
34 static double surf_cpu_ti_solve_trace_somewhat_simple(surf_cpu_ti_tgmr_t trace,
35 double a, double amount);
37 static void surf_cpu_ti_free_tmgr(surf_cpu_ti_tgmr_t trace);
39 static double surf_cpu_ti_integrate_trace_simple(surf_cpu_ti_trace_t trace,
41 static double surf_cpu_ti_integrate_trace_simple_point(surf_cpu_ti_trace_t trace,
43 static double surf_cpu_ti_solve_trace_simple(surf_cpu_ti_trace_t trace, double a,
45 static int surf_cpu_ti_binary_search(double *array, double a, int low, int high);
48 static void surf_cpu_ti_free_trace(surf_cpu_ti_trace_t trace)
50 if (trace->time_points)
51 xbt_free(trace->time_points);
53 xbt_free(trace->integral);
57 static void surf_cpu_ti_free_tmgr(surf_cpu_ti_tgmr_t trace)
60 surf_cpu_ti_free_trace(trace->trace);
64 static surf_cpu_ti_trace_t surf_cpu_ti_trace_new(tmgr_trace_t power_trace)
66 surf_cpu_ti_trace_t trace;
72 trace = xbt_new0(s_surf_cpu_ti_trace_t, 1);
74 xbt_malloc0(sizeof(double) *
75 (xbt_dynar_length(power_trace->event_list) + 1));
77 xbt_malloc0(sizeof(double) *
78 (xbt_dynar_length(power_trace->event_list) + 1));
79 trace->nb_points = xbt_dynar_length(power_trace->event_list);
80 xbt_dynar_foreach(power_trace->event_list, cpt, val) {
81 trace->time_points[i] = time;
82 trace->integral[i] = integral;
83 integral += val.delta * val.value;
87 trace->time_points[i] = time;
88 trace->integral[i] = integral;
93 * \brief Creates a new integration trace from a tmgr_trace_t
95 * \param power_trace CPU availability trace
96 * \param value Percentage of CPU power available (useful to fixed tracing)
97 * \param spacing Initial spacing
98 * \return Integration trace structure
100 static surf_cpu_ti_tgmr_t cpu_ti_parse_trace(tmgr_trace_t power_trace,
103 surf_cpu_ti_tgmr_t trace;
104 double total_time = 0.0;
107 trace = xbt_new0(s_surf_cpu_ti_tgmr_t, 1);
109 /* no availability file, fixed trace */
111 trace->type = TRACE_FIXED;
112 trace->value = value;
113 DEBUG1("No availabily trace. Constant value = %lf", value);
117 /* only one point available, fixed trace */
118 if (xbt_dynar_length(power_trace->event_list) == 1) {
119 xbt_dynar_get_cpy(power_trace->event_list, 0, &val);
120 trace->type = TRACE_FIXED;
121 trace->value = val.value;
125 trace->type = TRACE_DYNAMIC;
126 trace->power_trace = power_trace;
128 /* count the total time of trace file */
129 xbt_dynar_foreach(power_trace->event_list, cpt, val) {
130 total_time += val.delta;
132 trace->trace = surf_cpu_ti_trace_new(power_trace);
133 trace->last_time = total_time;
134 trace->total = surf_cpu_ti_integrate_trace_simple(trace->trace, 0, total_time);
136 DEBUG2("Total integral %lf, last_time %lf ",
137 trace->total, trace->last_time);
143 static cpu_ti_t cpu_ti_new(char *name, double power_peak,
145 tmgr_trace_t power_trace,
146 e_surf_resource_state_t state_initial,
147 tmgr_trace_t state_trace, xbt_dict_t cpu_properties)
149 tmgr_trace_t empty_trace;
151 cpu_ti_t cpu = xbt_new0(s_cpu_ti_t, 1);
152 s_surf_action_cpu_ti_t ti_action;
153 xbt_assert1(!surf_model_resource_by_name(surf_cpu_model, name),
154 "Host '%s' declared several times in the platform file", name);
155 cpu->action_set = xbt_swag_new(xbt_swag_offset(ti_action, cpu_list_hookup));
156 cpu->generic_resource.model = surf_cpu_model;
157 cpu->generic_resource.name = name;
158 cpu->generic_resource.properties = cpu_properties;
159 cpu->power_peak = power_peak;
160 xbt_assert0(cpu->power_peak > 0, "Power has to be >0");
161 DEBUG1("power scale %lf", power_scale);
162 cpu->power_scale = power_scale;
163 cpu->avail_trace = cpu_ti_parse_trace(power_trace, power_scale);
164 cpu->state_current = state_initial;
167 tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
168 if (power_trace && xbt_dynar_length(power_trace->event_list) > 1) {
169 /* add a fake trace event if periodicity == 0 */
170 xbt_dynar_get_cpy(power_trace->event_list,
171 xbt_dynar_length(power_trace->event_list) - 1, &val);
172 if (val.delta == 0) {
173 empty_trace = tmgr_empty_trace_new();
175 tmgr_history_add_trace(history, empty_trace,
176 cpu->avail_trace->last_time, 0, cpu);
179 xbt_dict_set(surf_model_resource_set(surf_cpu_model), name, cpu,
186 static void parse_cpu_ti_init(void)
188 double power_peak = 0.0;
189 double power_scale = 0.0;
190 tmgr_trace_t power_trace = NULL;
191 e_surf_resource_state_t state_initial = SURF_RESOURCE_OFF;
192 tmgr_trace_t state_trace = NULL;
194 power_peak = get_cpu_power(A_surfxml_host_power);
195 surf_parse_get_double(&power_scale, A_surfxml_host_availability);
196 power_trace = tmgr_trace_new(A_surfxml_host_availability_file);
198 xbt_assert0((A_surfxml_host_state == A_surfxml_host_state_ON) ||
199 (A_surfxml_host_state == A_surfxml_host_state_OFF),
201 if (A_surfxml_host_state == A_surfxml_host_state_ON)
202 state_initial = SURF_RESOURCE_ON;
203 if (A_surfxml_host_state == A_surfxml_host_state_OFF)
204 state_initial = SURF_RESOURCE_OFF;
205 state_trace = tmgr_trace_new(A_surfxml_host_state_file);
207 current_property_set = xbt_dict_new();
208 cpu_ti_new(xbt_strdup(A_surfxml_host_id), power_peak, power_scale,
209 power_trace, state_initial, state_trace, current_property_set);
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_model_resource_by_name(surf_cpu_model, elm);
229 xbt_assert1(cpu, "Host %s undefined", elm);
230 xbt_assert1(trace, "Trace %s undefined", trace_name);
232 if (cpu->state_event) {
233 DEBUG1("Trace already configured for this CPU(%s), ignoring it", elm);
236 DEBUG2("Add state trace: %s to CPU(%s)", trace_name, elm);
237 cpu->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, cpu);
240 xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
241 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
242 cpu_ti_t cpu = surf_model_resource_by_name(surf_cpu_model, elm);
244 xbt_assert1(cpu, "Host %s undefined", elm);
245 xbt_assert1(trace, "Trace %s undefined", trace_name);
247 DEBUG2("Add power trace: %s to CPU(%s)", trace_name, elm);
248 if (cpu->avail_trace)
249 surf_cpu_ti_free_tmgr(cpu->avail_trace);
251 cpu->avail_trace = cpu_ti_parse_trace(trace, cpu->power_scale);
253 /* add a fake trace event if periodicity == 0 */
254 if (trace && xbt_dynar_length(trace->event_list) > 1) {
256 xbt_dynar_get_cpy(trace->event_list,
257 xbt_dynar_length(trace->event_list) - 1, &val);
258 if (val.delta == 0) {
259 tmgr_trace_t empty_trace;
260 empty_trace = tmgr_empty_trace_new();
262 tmgr_history_add_trace(history, empty_trace,
263 cpu->avail_trace->last_time, 0, cpu);
269 static void cpu_ti_define_callbacks(const char *file)
271 surf_parse_reset_parser();
272 surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_ti_init);
273 surfxml_add_callback(ETag_surfxml_platform_cb_list, &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, ACTION_GET_CPU(action)->action_set);
289 /* remove from heap */
290 xbt_heap_remove(cpu_ti_action_heap, ((surf_action_cpu_ti_t) action)->index_heap);
291 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
298 static void cpu_ti_action_cancel(surf_action_t action)
300 surf_action_state_set(action, SURF_ACTION_FAILED);
301 xbt_heap_remove(cpu_ti_action_heap, ((surf_action_cpu_ti_t) action)->index_heap);
302 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
306 static void cpu_ti_action_state_set(surf_action_t action,
307 e_surf_action_state_t state)
309 surf_action_state_set(action, state);
310 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
315 * \brief Update the remaining amount of actions
317 * \param cpu Cpu on which the actions are running
318 * \param now Current time
320 static void cpu_ti_update_remaining_amount(cpu_ti_t cpu, double now)
322 #define GENERIC_ACTION(action) action->generic_action
324 surf_action_cpu_ti_t action;
326 /* already updated */
327 if (cpu->last_update >= now)
330 /* calcule the surface */
332 surf_cpu_ti_integrate_trace(cpu->avail_trace, cpu->last_update,
333 now) * cpu->power_peak;
334 DEBUG2("Flops total: %lf, Last update %lf", area_total, cpu->last_update);
336 xbt_swag_foreach(action, cpu->action_set) {
337 /* action not running, skip it */
338 if (GENERIC_ACTION(action).state_set !=
339 surf_cpu_model->states.running_action_set)
342 /* bogus priority, skip it */
343 if (GENERIC_ACTION(action).priority <= 0)
346 /* action suspended, skip it */
347 if (action->suspended != 0)
350 /* action don't need update */
351 if (GENERIC_ACTION(action).start >= now)
354 /* skip action that are finishing now */
355 if (GENERIC_ACTION(action).finish >= 0
356 && GENERIC_ACTION(action).finish <= now)
359 /* update remaining */
360 double_update(&(GENERIC_ACTION(action).remains),
361 area_total / (cpu->sum_priority *
362 GENERIC_ACTION(action).priority));
363 DEBUG2("Update remaining action(%p) remaining %lf", action,
364 GENERIC_ACTION(action).remains);
366 cpu->last_update = now;
367 #undef GENERIC_ACTION
371 * \brief Update the finish date of action if necessary
373 * \param cpu Cpu on which the actions are running
374 * \param now Current time
376 static void cpu_ti_update_action_finish_date(cpu_ti_t cpu, double now)
378 #define GENERIC_ACTION(action) action->generic_action
379 surf_action_cpu_ti_t action;
380 double sum_priority = 0.0, total_area, min_finish = -1;
382 /* update remaning amount of actions */
383 cpu_ti_update_remaining_amount(cpu, now);
385 xbt_swag_foreach(action, cpu->action_set) {
386 /* action not running, skip it */
387 if (GENERIC_ACTION(action).state_set !=
388 surf_cpu_model->states.running_action_set)
391 /* bogus priority, skip it */
392 if (GENERIC_ACTION(action).priority <= 0)
395 /* action suspended, skip it */
396 if (action->suspended != 0)
399 sum_priority += 1.0 / GENERIC_ACTION(action).priority;
401 cpu->sum_priority = sum_priority;
403 xbt_swag_foreach(action, cpu->action_set) {
405 /* action not running, skip it */
406 if (GENERIC_ACTION(action).state_set !=
407 surf_cpu_model->states.running_action_set)
410 /* verify if the action is really running on cpu */
411 if (action->suspended == 0 && GENERIC_ACTION(action).priority > 0) {
412 /* total area needed to finish the action. Used in trace integration */
414 (GENERIC_ACTION(action).remains) * sum_priority *
415 GENERIC_ACTION(action).priority;
417 total_area /= cpu->power_peak;
419 GENERIC_ACTION(action).finish =
420 surf_cpu_ti_solve_trace(cpu->avail_trace, now, total_area);
421 /* verify which event will happen before (max_duration or finish time) */
422 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
423 (GENERIC_ACTION(action).start +
424 GENERIC_ACTION(action).max_duration <
425 GENERIC_ACTION(action).finish))
426 min_finish = GENERIC_ACTION(action).start +
427 GENERIC_ACTION(action).max_duration;
429 min_finish = GENERIC_ACTION(action).finish;
431 /* put the max duration time on heap */
432 if (GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
434 (GENERIC_ACTION(action).start +
435 GENERIC_ACTION(action).max_duration);
437 /* add in action heap */
438 DEBUG2("action(%p) index %d", action, action->index_heap);
439 if (action->index_heap >= 0) {
440 surf_action_cpu_ti_t heap_act =
441 xbt_heap_remove(cpu_ti_action_heap, action->index_heap);
442 if (heap_act != action)
445 if (min_finish != NO_MAX_DURATION)
446 xbt_heap_push(cpu_ti_action_heap, action, min_finish);
449 ("Update finish time: Cpu(%s) Action: %p, Start Time: %lf Finish Time: %lf Max duration %lf",
450 cpu->generic_resource.name, action, GENERIC_ACTION(action).start,
451 GENERIC_ACTION(action).finish, GENERIC_ACTION(action).max_duration);
453 /* remove from modified cpu */
454 xbt_swag_remove(cpu, cpu_ti_modified_cpu);
455 #undef GENERIC_ACTION
458 static double cpu_ti_share_resources(double now)
460 cpu_ti_t cpu, cpu_next;
461 double min_action_duration = -1;
463 /* iterates over modified cpus to update share resources */
464 xbt_swag_foreach_safe(cpu, cpu_next, cpu_ti_modified_cpu) {
465 cpu_ti_update_action_finish_date(cpu, now);
467 /* get the min next event if heap not empty */
468 if (xbt_heap_size(cpu_ti_action_heap) > 0)
469 min_action_duration = xbt_heap_maxkey(cpu_ti_action_heap) - now;
471 DEBUG1("Share resources, min next event date: %lf", min_action_duration);
473 return min_action_duration;
476 static void cpu_ti_update_actions_state(double now, double delta)
478 #define GENERIC_ACTION(action) action->generic_action
479 surf_action_cpu_ti_t action;
480 while ((xbt_heap_size(cpu_ti_action_heap) > 0)
481 && (xbt_heap_maxkey(cpu_ti_action_heap) <= now)) {
482 action = xbt_heap_pop(cpu_ti_action_heap);
483 DEBUG1("Action %p: finish", action);
484 GENERIC_ACTION(action).finish = surf_get_clock();
485 /* set the remains to 0 due to precision problems when updating the remaining amount */
486 GENERIC_ACTION(action).remains = 0;
487 cpu_ti_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
488 /* update remaining amout of all actions */
489 cpu_ti_update_remaining_amount(action->cpu, surf_get_clock());
491 #undef GENERIC_ACTION
494 static void cpu_ti_update_resource_state(void *id,
495 tmgr_trace_event_t event_type,
496 double value, double date)
499 surf_action_cpu_ti_t action;
501 if (event_type == cpu->power_event) {
502 tmgr_trace_t power_trace;
503 surf_cpu_ti_tgmr_t trace;
506 DEBUG3("Finish trace date: %lf value %lf date %lf", surf_get_clock(),
508 /* update remaining of actions and put in modified cpu swag */
509 cpu_ti_update_remaining_amount(cpu, date);
510 xbt_swag_insert(cpu, cpu_ti_modified_cpu);
512 power_trace = cpu->avail_trace->power_trace;
513 xbt_dynar_get_cpy(power_trace->event_list,
514 xbt_dynar_length(power_trace->event_list) - 1, &val);
516 surf_cpu_ti_free_tmgr(cpu->avail_trace);
517 cpu->power_scale = val.value;
519 trace = xbt_new0(s_surf_cpu_ti_tgmr_t, 1);
520 trace->type = TRACE_FIXED;
521 trace->value = val.value;
522 DEBUG1("value %lf", val.value);
524 cpu->avail_trace = trace;
526 if (tmgr_trace_event_free(event_type))
527 cpu->power_event = NULL;
529 } else if (event_type == cpu->state_event) {
531 cpu->state_current = SURF_RESOURCE_ON;
533 cpu->state_current = SURF_RESOURCE_OFF;
535 /* put all action running on cpu to failed */
536 xbt_swag_foreach(action, cpu->action_set) {
537 if (surf_action_state_get((surf_action_t) action) ==
539 || surf_action_state_get((surf_action_t) action) ==
541 || surf_action_state_get((surf_action_t) action) ==
542 SURF_ACTION_NOT_IN_THE_SYSTEM) {
543 action->generic_action.finish = date;
544 cpu_ti_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
545 if (action->index_heap >= 0) {
546 surf_action_cpu_ti_t heap_act =
547 xbt_heap_remove(cpu_ti_action_heap, action->index_heap);
548 if (heap_act != action)
554 if (tmgr_trace_event_free(event_type))
555 cpu->state_event = NULL;
557 CRITICAL0("Unknown event ! \n");
564 static surf_action_t cpu_ti_execute(void *cpu, double size)
566 surf_action_cpu_ti_t action = NULL;
569 XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
571 surf_action_new(sizeof(s_surf_action_cpu_ti_t), size, surf_cpu_model,
572 CPU->state_current != SURF_RESOURCE_ON);
574 action->index_heap = -1;
576 xbt_swag_insert(CPU, cpu_ti_modified_cpu);
578 xbt_swag_insert(action, CPU->action_set);
580 action->suspended = 0; /* Should be useless because of the
581 calloc but it seems to help valgrind... */
584 return (surf_action_t) action;
587 static void cpu_ti_action_update_index_heap(void *action, int i)
589 ((surf_action_cpu_ti_t) action)->index_heap = i;
592 static surf_action_t cpu_ti_action_sleep(void *cpu, double duration)
594 surf_action_cpu_ti_t action = NULL;
597 duration = MAX(duration, MAXMIN_PRECISION);
599 XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
600 action = (surf_action_cpu_ti_t) cpu_ti_execute(cpu, 1.0);
601 action->generic_action.max_duration = duration;
602 action->suspended = 2;
603 if (duration == NO_MAX_DURATION) {
604 /* Move to the *end* of the corresponding action set. This convention
605 is used to speed up update_resource_state */
606 xbt_swag_remove(action, ((surf_action_t) action)->state_set);
607 ((surf_action_t) action)->state_set =
608 cpu_ti_running_action_set_that_does_not_need_being_checked;
609 xbt_swag_insert(action, ((surf_action_t) action)->state_set);
612 return (surf_action_t) action;
615 static void cpu_ti_action_suspend(surf_action_t action)
617 XBT_IN1("(%p)", action);
618 if (((surf_action_cpu_ti_t) action)->suspended != 2) {
619 ((surf_action_cpu_ti_t) action)->suspended = 1;
620 xbt_heap_remove(cpu_ti_action_heap, ((surf_action_cpu_ti_t) action)->index_heap);
621 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
626 static void cpu_ti_action_resume(surf_action_t action)
628 XBT_IN1("(%p)", action);
629 if (((surf_action_cpu_ti_t) action)->suspended != 2) {
630 ((surf_action_cpu_ti_t) action)->suspended = 0;
631 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
636 static int cpu_ti_action_is_suspended(surf_action_t action)
638 return (((surf_action_cpu_ti_t) action)->suspended == 1);
641 static void cpu_ti_action_set_max_duration(surf_action_t action, double duration)
643 surf_action_cpu_ti_t ACT = (surf_action_cpu_ti_t) action;
646 XBT_IN2("(%p,%g)", action, duration);
648 action->max_duration = duration;
652 (action->start + action->max_duration) <
653 action->finish ? (action->start +
654 action->max_duration) : action->finish;
656 min_finish = action->finish;
658 /* add in action heap */
659 if (ACT->index_heap >= 0) {
660 surf_action_cpu_ti_t heap_act =
661 xbt_heap_remove(cpu_ti_action_heap, ACT->index_heap);
665 xbt_heap_push(cpu_ti_action_heap, ACT, min_finish);
670 static void cpu_ti_action_set_priority(surf_action_t action, double priority)
672 XBT_IN2("(%p,%g)", action, priority);
673 action->priority = priority;
674 xbt_swag_insert(ACTION_GET_CPU(action), cpu_ti_modified_cpu);
678 static double cpu_ti_action_get_remains(surf_action_t action)
680 XBT_IN1("(%p)", action);
681 cpu_ti_update_remaining_amount((cpu_ti_t) ((surf_action_cpu_ti_t) action)->cpu,
683 return action->remains;
687 static e_surf_resource_state_t cpu_ti_get_state(void *cpu)
689 return ((cpu_ti_t) cpu)->state_current;
692 static double cpu_ti_get_speed(void *cpu, double load)
694 return load * (((cpu_ti_t) cpu)->power_peak);
698 * \brief Auxiliary function to update the CPU power scale.
700 * This function uses the trace structure to return the power scale at the determined time a.
701 * \param trace Trace structure to search the updated power scale
703 * \return CPU power scale
705 static double surf_cpu_ti_get_power_scale(surf_cpu_ti_tgmr_t trace, double a)
711 reduced_a = a - floor(a / trace->last_time) * trace->last_time;
713 surf_cpu_ti_binary_search(trace->trace->time_points, reduced_a, 0,
714 trace->trace->nb_points - 1);
715 xbt_dynar_get_cpy(trace->power_trace->event_list, 0, &val);
719 static double cpu_ti_get_available_speed(void *cpu)
723 surf_cpu_ti_get_power_scale(CPU->avail_trace, surf_get_clock());
724 /* number between 0 and 1 */
725 return CPU->power_scale;
728 static void cpu_ti_finalize(void)
731 xbt_dict_cursor_t cursor;
733 xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key, cpu) {
735 xbt_swag_free(CPU->action_set);
736 surf_cpu_ti_free_tmgr(CPU->avail_trace);
739 surf_model_exit(surf_cpu_model);
740 surf_cpu_model = NULL;
742 xbt_swag_free(cpu_ti_running_action_set_that_does_not_need_being_checked);
743 xbt_swag_free(cpu_ti_modified_cpu);
744 cpu_ti_running_action_set_that_does_not_need_being_checked = NULL;
745 xbt_heap_free(cpu_ti_action_heap);
748 static void surf_cpu_ti_model_init_internal(void)
750 s_surf_action_t action;
753 surf_cpu_model = surf_model_init();
755 cpu_ti_running_action_set_that_does_not_need_being_checked =
756 xbt_swag_new(xbt_swag_offset(action, state_hookup));
758 cpu_ti_modified_cpu = xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
760 surf_cpu_model->name = "CPU_TI";
762 surf_cpu_model->action_unref = cpu_ti_action_unref;
763 surf_cpu_model->action_cancel = cpu_ti_action_cancel;
764 surf_cpu_model->action_state_set = cpu_ti_action_state_set;
766 surf_cpu_model->model_private->resource_used = cpu_ti_resource_used;
767 surf_cpu_model->model_private->share_resources = cpu_ti_share_resources;
768 surf_cpu_model->model_private->update_actions_state = cpu_ti_update_actions_state;
769 surf_cpu_model->model_private->update_resource_state =
770 cpu_ti_update_resource_state;
771 surf_cpu_model->model_private->finalize = cpu_ti_finalize;
773 surf_cpu_model->suspend = cpu_ti_action_suspend;
774 surf_cpu_model->resume = cpu_ti_action_resume;
775 surf_cpu_model->is_suspended = cpu_ti_action_is_suspended;
776 surf_cpu_model->set_max_duration = cpu_ti_action_set_max_duration;
777 surf_cpu_model->set_priority = cpu_ti_action_set_priority;
778 surf_cpu_model->get_remains = cpu_ti_action_get_remains;
780 surf_cpu_model->extension.cpu.execute = cpu_ti_execute;
781 surf_cpu_model->extension.cpu.sleep = cpu_ti_action_sleep;
783 surf_cpu_model->extension.cpu.get_state = cpu_ti_get_state;
784 surf_cpu_model->extension.cpu.get_speed = cpu_ti_get_speed;
785 surf_cpu_model->extension.cpu.get_available_speed = cpu_ti_get_available_speed;
787 cpu_ti_action_heap = xbt_heap_new(8, NULL);
788 xbt_heap_set_update_callback(cpu_ti_action_heap, cpu_ti_action_update_index_heap);
792 void surf_cpu_model_init_ti(const char *filename)
796 surf_cpu_ti_model_init_internal();
797 cpu_ti_define_callbacks(filename);
798 xbt_dynar_push(model_list, &surf_cpu_model);
803 * \brief Integrate trace
805 * Wrapper around surf_cpu_integrate_trace_simple() to get
808 * \param trace Trace structure.
809 * \param a Begin of interval
810 * \param b End of interval
811 * \return the integrate value. -1 if an error occurs.
813 static double surf_cpu_ti_integrate_trace(surf_cpu_ti_tgmr_t trace, double a,
819 int a_index, b_index;
821 if ((a < 0.0) || (a > b)) {
823 ("Error, invalid integration interval [%.2f,%.2f]. You probably have a task executing with negative computation amount. Check your code.",
830 if (trace->type == TRACE_FIXED) {
831 return ((b - a) * trace->value);
834 if (ceil(a / trace->last_time) == a / trace->last_time)
835 a_index = 1 + (int) (ceil(a / trace->last_time));
837 a_index = (int) (ceil(a / trace->last_time));
839 b_index = (int) (floor(b / trace->last_time));
841 if (a_index > b_index) { /* Same chunk */
842 return surf_cpu_ti_integrate_trace_simple(trace->trace,
844 1) * trace->last_time,
845 b - (b_index) * trace->last_time);
848 first_chunk = surf_cpu_ti_integrate_trace_simple(trace->trace,
850 1) * trace->last_time,
852 middle_chunk = (b_index - a_index) * trace->total;
853 last_chunk = surf_cpu_ti_integrate_trace_simple(trace->trace,
856 (b_index) * trace->last_time);
858 DEBUG3("first_chunk=%.2f middle_chunk=%.2f last_chunk=%.2f\n",
859 first_chunk, middle_chunk, last_chunk);
861 return (first_chunk + middle_chunk + last_chunk);
865 * \brief Auxiliary function to calculate the integral between a and b.
866 * It simply calculates the integral at point a and b and returns the difference
868 * \param trace Trace structure
869 * \param a Initial point
870 * \param b Final point
873 static double surf_cpu_ti_integrate_trace_simple(surf_cpu_ti_trace_t trace,
876 return surf_cpu_ti_integrate_trace_simple_point(trace,
878 surf_cpu_ti_integrate_trace_simple_point(trace, a);
882 * \brief Auxiliary function to calculate the integral at point a.
883 * \param trace Trace structure
887 static double surf_cpu_ti_integrate_trace_simple_point(surf_cpu_ti_trace_t trace,
894 surf_cpu_ti_binary_search(trace->time_points, a, 0, trace->nb_points - 1);
895 integral += trace->integral[ind];
896 DEBUG7("a %lf ind %d integral %lf ind + 1 %lf ind %lf time +1 %lf time %lf",
897 a, ind, integral, trace->integral[ind + 1], trace->integral[ind],
898 trace->time_points[ind + 1], trace->time_points[ind]);
899 double_update(&a_aux, trace->time_points[ind]);
902 ((trace->integral[ind + 1] -
903 trace->integral[ind]) / (trace->time_points[ind + 1] -
904 trace->time_points[ind])) * (a -
908 DEBUG2("Integral a %lf = %lf", a, integral);
914 * \brief Calculate the time needed to execute "amount" on cpu.
916 * Here, amount can span multiple trace periods
918 * \param trace CPU trace structure
919 * \param a Initial time
920 * \param amount Amount to be executed
923 static double surf_cpu_ti_solve_trace(surf_cpu_ti_tgmr_t trace, double a,
928 double reduced_amount;
932 /* Fix very small negative numbers */
933 if ((a < 0.0) && (a > -EPSILON)) {
936 if ((amount < 0.0) && (amount > -EPSILON)) {
941 if ((a < 0.0) || (amount < 0.0)) {
943 ("Error, invalid parameters [a = %.2f, amount = %.2f]. You probably have a task executing with negative computation amount. Check your code.",
948 /* At this point, a and amount are positive */
950 if (amount < EPSILON)
953 /* Is the trace fixed ? */
954 if (trace->type == TRACE_FIXED) {
955 return (a + (amount / trace->value));
958 DEBUG2("amount %lf total %lf", amount, trace->total);
959 /* Reduce the problem to one where amount <= trace_total */
960 quotient = (int) (floor(amount / trace->total));
961 reduced_amount = (trace->total) * ((amount / trace->total) -
962 floor(amount / trace->total));
963 reduced_a = a - (trace->last_time) * (int) (floor(a / trace->last_time));
965 DEBUG3("Quotient: %d reduced_amount: %lf reduced_a: %lf", quotient,
966 reduced_amount, reduced_a);
968 /* Now solve for new_amount which is <= trace_total */
970 fprintf(stderr,"reduced_a = %.2f\n",reduced_a);
971 fprintf(stderr,"reduced_amount = %.2f\n",reduced_amount);
974 surf_cpu_ti_solve_trace_somewhat_simple(trace, reduced_a, reduced_amount);
976 /* Re-map to the original b and amount */
977 b = (trace->last_time) * (int) (floor(a / trace->last_time)) +
978 (quotient * trace->last_time) + reduced_b;
983 * \brief Auxiliary function to solve integral
985 * Here, amount is <= trace->total
986 * and a <=trace->last_time
989 static double surf_cpu_ti_solve_trace_somewhat_simple(surf_cpu_ti_tgmr_t trace,
990 double a, double amount)
992 double amount_till_end;
995 DEBUG2("Solve integral: [%.2f, amount=%.2f]", a, amount);
996 amount_till_end = surf_cpu_ti_integrate_trace(trace, a, trace->last_time);
998 fprintf(stderr,"amount_till_end=%.2f\n",amount_till_end);
1001 if (amount_till_end > amount) {
1002 b = surf_cpu_ti_solve_trace_simple(trace->trace, a, amount);
1004 b = trace->last_time +
1005 surf_cpu_ti_solve_trace_simple(trace->trace, 0.0,
1006 amount - amount_till_end);
1012 * \brief Auxiliary function to solve integral.
1013 * It returns the date when the requested amount of flops is available
1014 * \param trace Trace structure
1015 * \param a Initial point
1016 * \param amount Amount of flops
1017 * \return The date when amount is available.
1019 static double surf_cpu_ti_solve_trace_simple(surf_cpu_ti_trace_t trace, double a,
1025 integral_a = surf_cpu_ti_integrate_trace_simple_point(trace, a);
1027 surf_cpu_ti_binary_search(trace->integral, integral_a + amount, 0,
1028 trace->nb_points - 1);
1029 time = trace->time_points[ind];
1031 (integral_a + amount -
1032 trace->integral[ind]) / ((trace->integral[ind + 1] -
1033 trace->integral[ind]) /
1034 (trace->time_points[ind + 1] -
1035 trace->time_points[ind]));
1041 * \brief Binary search in array.
1042 * It returns the first point of the interval in which "a" is.
1043 * \param array Array
1044 * \param a Value to search
1045 * \param low Low bound to search in array
1046 * \param high Upper bound to search in array
1047 * \return Index of point
1049 static int surf_cpu_ti_binary_search(double *array, double a, int low, int high)
1051 int mid = low + (high - low) / 2;
1052 DEBUG5("a %lf low %d high %d mid %d value %lf", a, low, high, mid,
1054 /* a == array[mid] */
1055 if (array[mid] == a)
1057 /* a is between mid and mid+1 */
1058 if (array[mid] < a && array[mid + 1] > a)
1062 return surf_cpu_ti_binary_search(array, a, mid + 1, high);
1064 return surf_cpu_ti_binary_search(array, a, low, mid - 1);