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 static void *cpu_create_resource(const char *name, double power_peak,
48 tmgr_trace_t power_trace,
50 e_surf_resource_state_t state_initial,
51 tmgr_trace_t state_trace,
52 xbt_dict_t cpu_properties)
54 cpu_Cas01_t cpu = NULL;
56 xbt_assert(!surf_cpu_resource_by_name(name),
57 "Host '%s' declared several times in the platform file",
59 cpu = (cpu_Cas01_t) surf_resource_new(sizeof(s_cpu_Cas01_t),
62 cpu->power_peak = power_peak;
63 xbt_assert(cpu->power_peak > 0, "Power has to be >0");
64 cpu->power_scale = power_scale;
66 xbt_assert(core > 0, "Invalid number of cores %d", core);
70 tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
72 cpu->state_current = state_initial;
75 tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
78 lmm_constraint_new(surf_cpu_model->model_private->maxmin_system, cpu,
79 cpu->core * cpu->power_scale * cpu->power_peak);
81 xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
87 static void parse_cpu_init(sg_platf_host_cbarg_t host)
89 cpu_create_resource(host->id,
95 host->state_trace, host->properties);
98 static void cpu_add_traces_cpu(void)
100 xbt_dict_cursor_t cursor = NULL;
101 char *trace_name, *elm;
102 static int called = 0;
107 /* connect all traces relative to hosts */
108 xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
109 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
110 cpu_Cas01_t host = surf_cpu_resource_by_name(elm);
112 xbt_assert(host, "Host %s undefined", elm);
113 xbt_assert(trace, "Trace %s undefined", trace_name);
116 tmgr_history_add_trace(history, trace, 0.0, 0, host);
119 xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
120 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
121 cpu_Cas01_t host = surf_cpu_resource_by_name(elm);
123 xbt_assert(host, "Host %s undefined", elm);
124 xbt_assert(trace, "Trace %s undefined", trace_name);
127 tmgr_history_add_trace(history, trace, 0.0, 0, host);
131 static void cpu_define_callbacks()
133 sg_platf_host_add_cb(parse_cpu_init);
134 sg_platf_postparse_add_cb(cpu_add_traces_cpu);
137 static int cpu_resource_used(void *resource)
139 return lmm_constraint_used(surf_cpu_model->model_private->maxmin_system,
140 ((cpu_Cas01_t) resource)->constraint);
143 static double cpu_share_resources_lazy(double now)
145 return generic_share_resources_lazy(now, surf_cpu_model);
148 static double cpu_share_resources_full(double now)
150 s_surf_action_cpu_Cas01_t action;
151 return generic_maxmin_share_resources(surf_cpu_model->states.
153 xbt_swag_offset(action,
156 surf_cpu_model->model_private->maxmin_system, lmm_solve);
159 static void cpu_update_actions_state_lazy(double now, double delta)
161 generic_update_actions_state_lazy(now, delta, surf_cpu_model);
164 static void cpu_update_actions_state_full(double now, double delta)
166 generic_update_actions_state_full(now, delta, surf_cpu_model);
169 static void cpu_update_resource_state(void *id,
170 tmgr_trace_event_t event_type,
171 double value, double date)
173 cpu_Cas01_t cpu = id;
174 lmm_variable_t var = NULL;
175 lmm_element_t elem = NULL;
177 surf_watched_hosts();
179 if (event_type == cpu->power_event) {
180 cpu->power_scale = value;
181 lmm_update_constraint_bound(surf_cpu_model->model_private->maxmin_system, cpu->constraint,
182 cpu->core * cpu->power_scale *
185 TRACE_surf_host_set_power(date, cpu->generic_resource.name,
186 cpu->core * cpu->power_scale *
189 while ((var = lmm_get_var_from_cnst
190 (surf_cpu_model->model_private->maxmin_system, cpu->constraint, &elem))) {
191 surf_action_cpu_Cas01_t action = lmm_variable_id(var);
192 lmm_update_variable_bound(surf_cpu_model->model_private->maxmin_system,
193 GENERIC_LMM_ACTION(action).variable,
194 cpu->power_scale * cpu->power_peak);
196 if (tmgr_trace_event_free(event_type))
197 cpu->power_event = NULL;
198 } else if (event_type == cpu->state_event) {
200 cpu->state_current = SURF_RESOURCE_ON;
202 lmm_constraint_t cnst = cpu->constraint;
204 cpu->state_current = SURF_RESOURCE_OFF;
206 while ((var = lmm_get_var_from_cnst(surf_cpu_model->model_private->maxmin_system, cnst, &elem))) {
207 surf_action_t action = lmm_variable_id(var);
209 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
210 surf_action_state_get(action) == SURF_ACTION_READY ||
211 surf_action_state_get(action) ==
212 SURF_ACTION_NOT_IN_THE_SYSTEM) {
213 action->finish = date;
214 surf_action_state_set(action, SURF_ACTION_FAILED);
218 if (tmgr_trace_event_free(event_type))
219 cpu->state_event = NULL;
221 XBT_CRITICAL("Unknown event ! \n");
228 static surf_action_t cpu_execute(void *cpu, double size)
230 surf_action_cpu_Cas01_t action = NULL;
231 cpu_Cas01_t CPU = cpu;
233 XBT_IN("(%s,%g)", surf_resource_name(CPU), size);
235 surf_action_new(sizeof(s_surf_action_cpu_Cas01_t), size,
237 CPU->state_current != SURF_RESOURCE_ON);
239 GENERIC_LMM_ACTION(action).suspended = 0; /* Should be useless because of the
240 calloc but it seems to help valgrind... */
242 GENERIC_LMM_ACTION(action).variable =
243 lmm_variable_new(surf_cpu_model->model_private->maxmin_system, action,
244 GENERIC_ACTION(action).priority,
245 CPU->power_scale * CPU->power_peak, 1);
246 if (surf_cpu_model->model_private->update_mechanism == UM_LAZY) {
247 GENERIC_LMM_ACTION(action).index_heap = -1;
248 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
249 GENERIC_LMM_ACTION(action).last_value = 0.0;
251 lmm_expand(surf_cpu_model->model_private->maxmin_system, CPU->constraint,
252 GENERIC_LMM_ACTION(action).variable, 1.0);
254 return (surf_action_t) action;
257 static surf_action_t cpu_action_sleep(void *cpu, double duration)
259 surf_action_cpu_Cas01_t action = NULL;
262 duration = MAX(duration, MAXMIN_PRECISION);
264 XBT_IN("(%s,%g)", surf_resource_name(cpu), duration);
265 action = (surf_action_cpu_Cas01_t) cpu_execute(cpu, 1.0);
266 // FIXME: sleep variables should not consume 1.0 in lmm_expand
267 GENERIC_ACTION(action).max_duration = duration;
268 GENERIC_LMM_ACTION(action).suspended = 2;
269 if (duration == NO_MAX_DURATION) {
270 /* Move to the *end* of the corresponding action set. This convention
271 is used to speed up update_resource_state */
272 xbt_swag_remove(action, ((surf_action_t) action)->state_set);
273 ((surf_action_t) action)->state_set =
274 cpu_running_action_set_that_does_not_need_being_checked;
275 xbt_swag_insert(action, ((surf_action_t) action)->state_set);
278 lmm_update_variable_weight(surf_cpu_model->model_private->maxmin_system,
279 GENERIC_LMM_ACTION(action).variable, 0.0);
280 if (surf_cpu_model->model_private->update_mechanism == UM_LAZY) { // remove action from the heap
281 surf_action_lmm_heap_remove(surf_cpu_model->model_private->action_heap,(surf_action_lmm_t)action);
282 // this is necessary for a variable with weight 0 since such
283 // variables are ignored in lmm and we need to set its max_duration
284 // correctly at the next call to share_resources
285 xbt_swag_insert_at_head(action,surf_cpu_model->model_private->modified_set);
289 return (surf_action_t) action;
292 static e_surf_resource_state_t cpu_get_state(void *cpu)
294 return ((cpu_Cas01_t) cpu)->state_current;
297 static double cpu_get_speed(void *cpu, double load)
299 return load * (((cpu_Cas01_t) cpu)->power_peak);
302 static double cpu_get_available_speed(void *cpu)
304 /* number between 0 and 1 */
305 return ((cpu_Cas01_t) cpu)->power_scale;
308 static void cpu_finalize(void)
310 lmm_system_free(surf_cpu_model->model_private->maxmin_system);
311 surf_cpu_model->model_private->maxmin_system = NULL;
313 if (surf_cpu_model->model_private->action_heap)
314 xbt_heap_free(surf_cpu_model->model_private->action_heap);
315 xbt_swag_free(surf_cpu_model->model_private->modified_set);
317 surf_model_exit(surf_cpu_model);
318 surf_cpu_model = NULL;
320 xbt_swag_free(cpu_running_action_set_that_does_not_need_being_checked);
321 cpu_running_action_set_that_does_not_need_being_checked = NULL;
324 static void surf_cpu_model_init_internal()
326 s_surf_action_t action;
327 s_surf_action_cpu_Cas01_t comp;
329 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
331 xbt_cfg_get_int(_sg_cfg_set, "cpu/maxmin_selective_update");
333 surf_cpu_model = surf_model_init();
335 if (!strcmp(optim, "Full")) {
336 surf_cpu_model->model_private->update_mechanism = UM_FULL;
337 surf_cpu_model->model_private->selective_update = select;
338 } else if (!strcmp(optim, "Lazy")) {
339 surf_cpu_model->model_private->update_mechanism = UM_LAZY;
340 surf_cpu_model->model_private->selective_update = 1;
341 xbt_assert((select == 1)
343 (xbt_cfg_is_default_value
344 (_sg_cfg_set, "cpu/maxmin_selective_update")),
345 "Disabling selective update while using the lazy update mechanism is dumb!");
347 xbt_die("Unsupported optimization (%s) for this model", optim);
350 cpu_running_action_set_that_does_not_need_being_checked =
351 xbt_swag_new(xbt_swag_offset(action, state_hookup));
353 surf_cpu_model->name = "cpu";
355 surf_cpu_model->action_unref = surf_action_unref;
356 surf_cpu_model->action_cancel = surf_action_cancel;
357 surf_cpu_model->action_state_set = surf_action_state_set;
359 surf_cpu_model->model_private->resource_used = cpu_resource_used;
361 if (surf_cpu_model->model_private->update_mechanism == UM_LAZY) {
362 surf_cpu_model->model_private->share_resources =
363 cpu_share_resources_lazy;
364 surf_cpu_model->model_private->update_actions_state =
365 cpu_update_actions_state_lazy;
366 } else if (surf_cpu_model->model_private->update_mechanism == UM_FULL) {
367 surf_cpu_model->model_private->share_resources =
368 cpu_share_resources_full;
369 surf_cpu_model->model_private->update_actions_state =
370 cpu_update_actions_state_full;
372 xbt_die("Invalid cpu update mechanism!");
374 surf_cpu_model->model_private->update_resource_state =
375 cpu_update_resource_state;
376 surf_cpu_model->model_private->finalize = cpu_finalize;
378 surf_cpu_model->suspend = surf_action_suspend;
379 surf_cpu_model->resume = surf_action_resume;
380 surf_cpu_model->is_suspended = surf_action_is_suspended;
381 surf_cpu_model->set_max_duration = surf_action_set_max_duration;
382 surf_cpu_model->set_priority = surf_action_set_priority;
384 surf_cpu_model->set_category = surf_action_set_category;
386 surf_cpu_model->get_remains = surf_action_get_remains;
388 surf_cpu_model->extension.cpu.execute = cpu_execute;
389 surf_cpu_model->extension.cpu.sleep = cpu_action_sleep;
391 surf_cpu_model->extension.cpu.get_state = cpu_get_state;
392 surf_cpu_model->extension.cpu.get_speed = cpu_get_speed;
393 surf_cpu_model->extension.cpu.get_available_speed =
394 cpu_get_available_speed;
395 surf_cpu_model->extension.cpu.create_resource = cpu_create_resource;
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);