1 /* Copyright (c) 2009-2011. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "surf_private.h"
8 #include "surf/surf_resource.h"
9 #include "maxmin_private.h"
10 #include "simgrid/sg_config.h"
12 surf_model_t surf_cpu_model = NULL;
14 #undef GENERIC_LMM_ACTION
17 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
18 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
19 #define ACTION_GET_CPU(action) ((surf_action_cpu_Cas01_t) action)->cpu
21 typedef struct surf_action_cpu_cas01 {
22 s_surf_action_lmm_t generic_lmm_action;
23 } s_surf_action_cpu_Cas01_t, *surf_action_cpu_Cas01_t;
25 typedef struct cpu_Cas01 {
26 s_surf_resource_t generic_resource;
27 s_xbt_swag_hookup_t modified_cpu_hookup;
30 tmgr_trace_event_t power_event;
32 e_surf_resource_state_t state_current;
33 tmgr_trace_event_t state_event;
34 lmm_constraint_t constraint;
35 } s_cpu_Cas01_t, *cpu_Cas01_t;
37 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu, surf,
38 "Logging specific to the SURF CPU IMPROVED module");
43 cpu_running_action_set_that_does_not_need_being_checked = NULL;
46 /* This function is registered as a callback to sg_platf_new_host() and never called directly */
47 static void *cpu_create_resource(const char *name, double power_peak,
49 tmgr_trace_t power_trace,
51 e_surf_resource_state_t state_initial,
52 tmgr_trace_t state_trace,
53 xbt_dict_t cpu_properties)
55 cpu_Cas01_t cpu = NULL;
57 xbt_assert(!surf_cpu_resource_by_name(name),
58 "Host '%s' declared several times in the platform file",
60 cpu = (cpu_Cas01_t) surf_resource_new(sizeof(s_cpu_Cas01_t),
63 cpu->power_peak = power_peak;
64 xbt_assert(cpu->power_peak > 0, "Power has to be >0");
65 cpu->power_scale = power_scale;
67 xbt_assert(core > 0, "Invalid number of cores %d", core);
71 tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
73 cpu->state_current = state_initial;
76 tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
79 lmm_constraint_new(surf_cpu_model->model_private->maxmin_system, cpu,
80 cpu->core * cpu->power_scale * cpu->power_peak);
82 xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
88 static void parse_cpu_init(sg_platf_host_cbarg_t host)
90 cpu_create_resource(host->id,
96 host->state_trace, host->properties);
99 static void cpu_add_traces_cpu(void)
101 xbt_dict_cursor_t cursor = NULL;
102 char *trace_name, *elm;
103 static int called = 0;
108 /* connect all traces relative to hosts */
109 xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
110 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
111 cpu_Cas01_t host = surf_cpu_resource_by_name(elm);
113 xbt_assert(host, "Host %s undefined", elm);
114 xbt_assert(trace, "Trace %s undefined", trace_name);
117 tmgr_history_add_trace(history, trace, 0.0, 0, host);
120 xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
121 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
122 cpu_Cas01_t host = surf_cpu_resource_by_name(elm);
124 xbt_assert(host, "Host %s undefined", elm);
125 xbt_assert(trace, "Trace %s undefined", trace_name);
128 tmgr_history_add_trace(history, trace, 0.0, 0, host);
132 static void cpu_define_callbacks()
134 sg_platf_host_add_cb(parse_cpu_init);
135 sg_platf_postparse_add_cb(cpu_add_traces_cpu);
138 static int cpu_resource_used(void *resource)
140 return lmm_constraint_used(surf_cpu_model->model_private->maxmin_system,
141 ((cpu_Cas01_t) resource)->constraint);
144 static double cpu_share_resources_lazy(double now)
146 return generic_share_resources_lazy(now, surf_cpu_model);
149 static double cpu_share_resources_full(double now)
151 s_surf_action_cpu_Cas01_t action;
152 return generic_maxmin_share_resources(surf_cpu_model->states.
154 xbt_swag_offset(action,
157 surf_cpu_model->model_private->maxmin_system, lmm_solve);
160 static void cpu_update_actions_state_lazy(double now, double delta)
162 generic_update_actions_state_lazy(now, delta, surf_cpu_model);
165 static void cpu_update_actions_state_full(double now, double delta)
167 generic_update_actions_state_full(now, delta, surf_cpu_model);
170 static void cpu_update_resource_state(void *id,
171 tmgr_trace_event_t event_type,
172 double value, double date)
174 cpu_Cas01_t cpu = id;
175 lmm_variable_t var = NULL;
176 lmm_element_t elem = NULL;
178 surf_watched_hosts();
180 if (event_type == cpu->power_event) {
181 cpu->power_scale = value;
182 lmm_update_constraint_bound(surf_cpu_model->model_private->maxmin_system, cpu->constraint,
183 cpu->core * cpu->power_scale *
186 TRACE_surf_host_set_power(date, cpu->generic_resource.name,
187 cpu->core * cpu->power_scale *
190 while ((var = lmm_get_var_from_cnst
191 (surf_cpu_model->model_private->maxmin_system, cpu->constraint, &elem))) {
192 surf_action_cpu_Cas01_t action = lmm_variable_id(var);
193 lmm_update_variable_bound(surf_cpu_model->model_private->maxmin_system,
194 GENERIC_LMM_ACTION(action).variable,
195 cpu->power_scale * cpu->power_peak);
197 if (tmgr_trace_event_free(event_type))
198 cpu->power_event = NULL;
199 } else if (event_type == cpu->state_event) {
201 cpu->state_current = SURF_RESOURCE_ON;
203 lmm_constraint_t cnst = cpu->constraint;
205 cpu->state_current = SURF_RESOURCE_OFF;
207 while ((var = lmm_get_var_from_cnst(surf_cpu_model->model_private->maxmin_system, cnst, &elem))) {
208 surf_action_t action = lmm_variable_id(var);
210 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
211 surf_action_state_get(action) == SURF_ACTION_READY ||
212 surf_action_state_get(action) ==
213 SURF_ACTION_NOT_IN_THE_SYSTEM) {
214 action->finish = date;
215 surf_action_state_set(action, SURF_ACTION_FAILED);
219 if (tmgr_trace_event_free(event_type))
220 cpu->state_event = NULL;
222 XBT_CRITICAL("Unknown event ! \n");
229 static surf_action_t cpu_execute(void *cpu, double size)
231 surf_action_cpu_Cas01_t action = NULL;
232 cpu_Cas01_t CPU = cpu;
234 XBT_IN("(%s,%g)", surf_resource_name(CPU), size);
236 surf_action_new(sizeof(s_surf_action_cpu_Cas01_t), size,
238 CPU->state_current != SURF_RESOURCE_ON);
240 GENERIC_LMM_ACTION(action).suspended = 0; /* Should be useless because of the
241 calloc but it seems to help valgrind... */
243 GENERIC_LMM_ACTION(action).variable =
244 lmm_variable_new(surf_cpu_model->model_private->maxmin_system, action,
245 GENERIC_ACTION(action).priority,
246 CPU->power_scale * CPU->power_peak, 1);
247 if (surf_cpu_model->model_private->update_mechanism == UM_LAZY) {
248 GENERIC_LMM_ACTION(action).index_heap = -1;
249 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
250 GENERIC_LMM_ACTION(action).last_value = 0.0;
252 lmm_expand(surf_cpu_model->model_private->maxmin_system, CPU->constraint,
253 GENERIC_LMM_ACTION(action).variable, 1.0);
255 return (surf_action_t) action;
258 static surf_action_t cpu_action_sleep(void *cpu, double duration)
260 surf_action_cpu_Cas01_t action = NULL;
263 duration = MAX(duration, MAXMIN_PRECISION);
265 XBT_IN("(%s,%g)", surf_resource_name(cpu), duration);
266 action = (surf_action_cpu_Cas01_t) cpu_execute(cpu, 1.0);
267 // FIXME: sleep variables should not consume 1.0 in lmm_expand
268 GENERIC_ACTION(action).max_duration = duration;
269 GENERIC_LMM_ACTION(action).suspended = 2;
270 if (duration == NO_MAX_DURATION) {
271 /* Move to the *end* of the corresponding action set. This convention
272 is used to speed up update_resource_state */
273 xbt_swag_remove(action, ((surf_action_t) action)->state_set);
274 ((surf_action_t) action)->state_set =
275 cpu_running_action_set_that_does_not_need_being_checked;
276 xbt_swag_insert(action, ((surf_action_t) action)->state_set);
279 lmm_update_variable_weight(surf_cpu_model->model_private->maxmin_system,
280 GENERIC_LMM_ACTION(action).variable, 0.0);
281 if (surf_cpu_model->model_private->update_mechanism == UM_LAZY) { // remove action from the heap
282 surf_action_lmm_heap_remove(surf_cpu_model->model_private->action_heap,(surf_action_lmm_t)action);
283 // this is necessary for a variable with weight 0 since such
284 // variables are ignored in lmm and we need to set its max_duration
285 // correctly at the next call to share_resources
286 xbt_swag_insert_at_head(action,surf_cpu_model->model_private->modified_set);
290 return (surf_action_t) action;
293 static e_surf_resource_state_t cpu_get_state(void *cpu)
295 return ((cpu_Cas01_t) cpu)->state_current;
298 static double cpu_get_speed(void *cpu, double load)
300 return load * (((cpu_Cas01_t) cpu)->power_peak);
303 static double cpu_get_available_speed(void *cpu)
305 /* number between 0 and 1 */
306 return ((cpu_Cas01_t) cpu)->power_scale;
309 static void cpu_finalize(void)
311 lmm_system_free(surf_cpu_model->model_private->maxmin_system);
312 surf_cpu_model->model_private->maxmin_system = NULL;
314 if (surf_cpu_model->model_private->action_heap)
315 xbt_heap_free(surf_cpu_model->model_private->action_heap);
316 xbt_swag_free(surf_cpu_model->model_private->modified_set);
318 surf_model_exit(surf_cpu_model);
319 surf_cpu_model = NULL;
321 xbt_swag_free(cpu_running_action_set_that_does_not_need_being_checked);
322 cpu_running_action_set_that_does_not_need_being_checked = NULL;
325 static void surf_cpu_model_init_internal()
327 s_surf_action_t action;
328 s_surf_action_cpu_Cas01_t comp;
330 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
332 xbt_cfg_get_int(_sg_cfg_set, "cpu/maxmin_selective_update");
334 surf_cpu_model = surf_model_init();
336 if (!strcmp(optim, "Full")) {
337 surf_cpu_model->model_private->update_mechanism = UM_FULL;
338 surf_cpu_model->model_private->selective_update = select;
339 } else if (!strcmp(optim, "Lazy")) {
340 surf_cpu_model->model_private->update_mechanism = UM_LAZY;
341 surf_cpu_model->model_private->selective_update = 1;
342 xbt_assert((select == 1)
344 (xbt_cfg_is_default_value
345 (_sg_cfg_set, "cpu/maxmin_selective_update")),
346 "Disabling selective update while using the lazy update mechanism is dumb!");
348 xbt_die("Unsupported optimization (%s) for this model", optim);
351 cpu_running_action_set_that_does_not_need_being_checked =
352 xbt_swag_new(xbt_swag_offset(action, state_hookup));
354 surf_cpu_model->name = "cpu";
356 surf_cpu_model->action_unref = surf_action_unref;
357 surf_cpu_model->action_cancel = surf_action_cancel;
358 surf_cpu_model->action_state_set = surf_action_state_set;
360 surf_cpu_model->model_private->resource_used = cpu_resource_used;
362 if (surf_cpu_model->model_private->update_mechanism == UM_LAZY) {
363 surf_cpu_model->model_private->share_resources =
364 cpu_share_resources_lazy;
365 surf_cpu_model->model_private->update_actions_state =
366 cpu_update_actions_state_lazy;
367 } else if (surf_cpu_model->model_private->update_mechanism == UM_FULL) {
368 surf_cpu_model->model_private->share_resources =
369 cpu_share_resources_full;
370 surf_cpu_model->model_private->update_actions_state =
371 cpu_update_actions_state_full;
373 xbt_die("Invalid cpu update mechanism!");
375 surf_cpu_model->model_private->update_resource_state =
376 cpu_update_resource_state;
377 surf_cpu_model->model_private->finalize = cpu_finalize;
379 surf_cpu_model->suspend = surf_action_suspend;
380 surf_cpu_model->resume = surf_action_resume;
381 surf_cpu_model->is_suspended = surf_action_is_suspended;
382 surf_cpu_model->set_max_duration = surf_action_set_max_duration;
383 surf_cpu_model->set_priority = surf_action_set_priority;
385 surf_cpu_model->set_category = surf_action_set_category;
387 surf_cpu_model->get_remains = surf_action_get_remains;
389 surf_cpu_model->extension.cpu.execute = cpu_execute;
390 surf_cpu_model->extension.cpu.sleep = cpu_action_sleep;
392 surf_cpu_model->extension.cpu.get_state = cpu_get_state;
393 surf_cpu_model->extension.cpu.get_speed = cpu_get_speed;
394 surf_cpu_model->extension.cpu.get_available_speed =
395 cpu_get_available_speed;
396 surf_cpu_model->extension.cpu.add_traces = cpu_add_traces_cpu;
398 if (!surf_cpu_model->model_private->maxmin_system) {
399 surf_cpu_model->model_private->maxmin_system = lmm_system_new(surf_cpu_model->model_private->selective_update);
401 if (surf_cpu_model->model_private->update_mechanism == UM_LAZY) {
402 surf_cpu_model->model_private->action_heap = xbt_heap_new(8, NULL);
403 xbt_heap_set_update_callback(surf_cpu_model->model_private->action_heap,
404 surf_action_lmm_update_index_heap);
405 surf_cpu_model->model_private->modified_set =
406 xbt_swag_new(xbt_swag_offset(comp, generic_lmm_action.action_list_hookup));
407 surf_cpu_model->model_private->maxmin_system->keep_track = surf_cpu_model->model_private->modified_set;
411 /*********************************************************************/
412 /* Basic sharing model for CPU: that is where all this started... ;) */
413 /*********************************************************************/
414 /* @InProceedings{casanova01simgrid, */
415 /* author = "H. Casanova", */
416 /* booktitle = "Proceedings of the IEEE Symposium on Cluster Computing */
417 /* and the Grid (CCGrid'01)", */
418 /* publisher = "IEEE Computer Society", */
419 /* title = "Simgrid: {A} Toolkit for the Simulation of Application */
423 /* note = "Available at */
424 /* \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
427 void surf_cpu_model_init_Cas01()
429 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
434 if (!strcmp(optim, "TI")) {
435 surf_cpu_model_init_ti();
439 surf_cpu_model_init_internal();
440 cpu_define_callbacks();
441 xbt_dynar_push(model_list, &surf_cpu_model);