src/surf/cpu.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   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. */
   7
   8 #include "cpu_private.h"
   9
  10 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu, surf,
  11                                 "Logging specific to the SURF CPU module");
  12
  13 surf_cpu_model_t surf_cpu_model = NULL;
  14 lmm_system_t cpu_maxmin_system = NULL;
  15
  16 xbt_dict_t cpu_set = NULL;
  17
  18 static void cpu_free(void *cpu)
  19 {
  20   free(((cpu_Cas01_t) cpu)->name);
  21   free(cpu);
  22 }
  23
  24 static cpu_Cas01_t cpu_new(char *name, double power_scale,
  25                            double power_initial,
  26                            tmgr_trace_t power_trace,
  27                            e_surf_cpu_state_t state_initial,
  28                            tmgr_trace_t state_trace,
  29                            xbt_dict_t cpu_properties)
  30 {
  31   cpu_Cas01_t cpu = xbt_new0(s_cpu_Cas01_t, 1);
  32   xbt_assert1(!xbt_dict_get_or_null(cpu_set, name),
  33               "Host '%s' declared several times in the platform file",name);
  34
  35   cpu->model = (surf_model_t) surf_cpu_model;
  36   cpu->name = name;
  37   cpu->power_scale = power_scale;
  38   xbt_assert0(cpu->power_scale > 0, "Power has to be >0");
  39   cpu->power_current = power_initial;
  40   if (power_trace)
  41     cpu->power_event =
  42         tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
  43
  44   cpu->state_current = state_initial;
  45   if (state_trace)
  46     cpu->state_event =
  47         tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
  48
  49   cpu->constraint =
  50       lmm_constraint_new(cpu_maxmin_system, cpu,
  51                          cpu->power_current * cpu->power_scale);
  52
  53   /*add the property set*/
  54   cpu->properties = cpu_properties;
  55
  56   current_property_set = cpu_properties;
  57
  58   xbt_dict_set(cpu_set, name, cpu, cpu_free);
  59
  60   return cpu;
  61 }
  62
  63
  64 static void parse_cpu_init(void)
  65 {
  66   double power_scale = 0.0;
  67   double power_initial = 0.0;
  68   tmgr_trace_t power_trace = NULL;
  69   e_surf_cpu_state_t state_initial = SURF_CPU_OFF;
  70   tmgr_trace_t state_trace = NULL;
  71
  72   power_scale = get_cpu_power(A_surfxml_host_power);
  73   surf_parse_get_double(&power_initial, A_surfxml_host_availability);
  74   surf_parse_get_trace(&power_trace, A_surfxml_host_availability_file);
  75
  76   xbt_assert0((A_surfxml_host_state == A_surfxml_host_state_ON) ||
  77               (A_surfxml_host_state == A_surfxml_host_state_OFF),
  78               "Invalid state");
  79   if (A_surfxml_host_state == A_surfxml_host_state_ON)
  80     state_initial = SURF_CPU_ON;
  81   if (A_surfxml_host_state == A_surfxml_host_state_OFF)
  82     state_initial = SURF_CPU_OFF;
  83   surf_parse_get_trace(&state_trace, A_surfxml_host_state_file);
  84
  85   current_property_set = xbt_dict_new();
  86   cpu_new(xbt_strdup(A_surfxml_host_id), power_scale, power_initial, power_trace, state_initial,
  87           state_trace,  current_property_set);
  88
  89 }
  90
  91 static void add_traces_cpu(void) {
  92    xbt_dict_cursor_t cursor=NULL;
  93    char *trace_name,*elm;
  94
  95    static int called = 0;
  96
  97    if (called) return;
  98    called = 1;
  99
 100
 101    /* connect all traces relative to hosts */
 102    xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 103       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 104       cpu_Cas01_t host = xbt_dict_get_or_null(cpu_set, elm);
 105
 106       xbt_assert1(host, "Host %s undefined", elm);
 107       xbt_assert1(trace, "Trace %s undefined", trace_name);
 108
 109       host->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, host);
 110    }
 111
 112    xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 113       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 114       cpu_Cas01_t host = xbt_dict_get_or_null(cpu_set, elm);
 115
 116       xbt_assert1(host, "Host %s undefined", elm);
 117       xbt_assert1(trace, "Trace %s undefined", trace_name);
 118
 119       host->power_event = tmgr_history_add_trace(history, trace, 0.0, 0, host);
 120    }
 121 }
 122
 123 static void define_callbacks(const char *file)
 124 {
 125   surf_parse_reset_parser();
 126   surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_init);
 127   surfxml_add_callback(STag_surfxml_prop_cb_list, parse_properties);
 128   surfxml_add_callback(STag_surfxml_random_cb_list, &init_randomness);
 129   surfxml_add_callback(ETag_surfxml_random_cb_list, &add_randomness);
 130 }
 131
 132 static void *name_service(const char *name)
 133 {
 134   return xbt_dict_get_or_null(cpu_set, name);
 135 }
 136
 137 static const char *get_resource_name(void *resource_id)
 138 {
 139   return ((cpu_Cas01_t) resource_id)->name;
 140 }
 141
 142 static int resource_used(void *resource_id)
 143 {
 144   return lmm_constraint_used(cpu_maxmin_system,
 145                              ((cpu_Cas01_t) resource_id)->constraint);
 146 }
 147
 148 static int action_free(surf_action_t action)
 149 {
 150   action->using--;
 151   if (!action->using) {
 152     xbt_swag_remove(action, action->state_set);
 153     if (((surf_action_cpu_Cas01_t) action)->variable)
 154       lmm_variable_free(cpu_maxmin_system,
 155                         ((surf_action_cpu_Cas01_t) action)->variable);
 156     free(action);
 157     return 1;
 158   }
 159   return 0;
 160 }
 161
 162 static void action_use(surf_action_t action)
 163 {
 164   action->using++;
 165 }
 166
 167 static void action_cancel(surf_action_t action)
 168 {
 169   surf_action_change_state(action, SURF_ACTION_FAILED);
 170   return;
 171 }
 172
 173 static void action_recycle(surf_action_t action)
 174 {
 175   DIE_IMPOSSIBLE;
 176 }
 177
 178 static void action_change_state(surf_action_t action,
 179                                 e_surf_action_state_t state)
 180 {
 181 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 182 /*     if(((surf_action_cpu_Cas01_t)action)->variable) { */
 183 /*       lmm_variable_disable(cpu_maxmin_system, ((surf_action_cpu_Cas01_t)action)->variable); */
 184 /*       ((surf_action_cpu_Cas01_t)action)->variable = NULL; */
 185 /*     } */
 186
 187   surf_action_change_state(action, state);
 188   return;
 189 }
 190
 191 static double share_resources(double now)
 192 {
 193   s_surf_action_cpu_Cas01_t action;
 194   return generic_maxmin_share_resources(surf_cpu_model->common_public->
 195                                         states.running_action_set,
 196                                         xbt_swag_offset(action, variable),
 197                                         cpu_maxmin_system, lmm_solve);
 198 }
 199
 200 static void update_actions_state(double now, double delta)
 201 {
 202   surf_action_cpu_Cas01_t action = NULL;
 203   surf_action_cpu_Cas01_t next_action = NULL;
 204   xbt_swag_t running_actions =
 205       surf_cpu_model->common_public->states.running_action_set;
 206   /* FIXME: UNUSED
 207      xbt_swag_t failed_actions =
 208      surf_cpu_model->common_public->states.failed_action_set;
 209    */
 210
 211   xbt_swag_foreach_safe(action, next_action, running_actions) {
 212     double_update(&(action->generic_action.remains),
 213                   lmm_variable_getvalue(action->variable) * delta);
 214     if (action->generic_action.max_duration != NO_MAX_DURATION)
 215       double_update(&(action->generic_action.max_duration), delta);
 216     if ((action->generic_action.remains <= 0) &&
 217         (lmm_get_variable_weight(action->variable) > 0)) {
 218       action->generic_action.finish = surf_get_clock();
 219       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 220     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 221                (action->generic_action.max_duration <= 0)) {
 222       action->generic_action.finish = surf_get_clock();
 223       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 224     } else {                    /* Need to check that none of the model has failed */
 225       lmm_constraint_t cnst = NULL;
 226       int i = 0;
 227       cpu_Cas01_t cpu = NULL;
 228
 229       while ((cnst =
 230               lmm_get_cnst_from_var(cpu_maxmin_system, action->variable,
 231                                     i++))) {
 232         cpu = lmm_constraint_id(cnst);
 233         if (cpu->state_current == SURF_CPU_OFF) {
 234           action->generic_action.finish = surf_get_clock();
 235           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 236           break;
 237         }
 238       }
 239     }
 240   }
 241
 242   return;
 243 }
 244
 245 static void update_resource_state(void *id,
 246                                   tmgr_trace_event_t event_type,
 247                                   double value)
 248 {
 249   cpu_Cas01_t cpu = id;
 250
 251   if (event_type == cpu->power_event) {
 252     cpu->power_current = value;
 253     lmm_update_constraint_bound(cpu_maxmin_system, cpu->constraint,
 254                                 cpu->power_current * cpu->power_scale);
 255   } else if (event_type == cpu->state_event) {
 256     if (value > 0)
 257       cpu->state_current = SURF_CPU_ON;
 258     else
 259       cpu->state_current = SURF_CPU_OFF;
 260   } else {
 261     CRITICAL0("Unknown event ! \n");
 262     xbt_abort();
 263   }
 264
 265   return;
 266 }
 267
 268 static surf_action_t execute(void *cpu, double size)
 269 {
 270   surf_action_cpu_Cas01_t action = NULL;
 271   cpu_Cas01_t CPU = cpu;
 272
 273   XBT_IN2("(%s,%g)", CPU->name, size);
 274   action = xbt_new0(s_surf_action_cpu_Cas01_t, 1);
 275
 276   action->generic_action.using = 1;
 277   action->generic_action.cost = size;
 278   action->generic_action.remains = size;
 279   action->generic_action.priority = 1.0;
 280   action->generic_action.max_duration = NO_MAX_DURATION;
 281   action->generic_action.start = surf_get_clock();
 282   action->generic_action.finish = -1.0;
 283   action->generic_action.model_type =
 284       (surf_model_t) surf_cpu_model;
 285   action->suspended = 0;        /* Should be useless because of the
 286                                    calloc but it seems to help valgrind... */
 287
 288   if (CPU->state_current == SURF_CPU_ON)
 289     action->generic_action.state_set =
 290         surf_cpu_model->common_public->states.running_action_set;
 291   else
 292     action->generic_action.state_set =
 293         surf_cpu_model->common_public->states.failed_action_set;
 294   xbt_swag_insert(action, action->generic_action.state_set);
 295
 296   action->variable = lmm_variable_new(cpu_maxmin_system, action,
 297                                       action->generic_action.priority,
 298                                       -1.0, 1);
 299   lmm_expand(cpu_maxmin_system, CPU->constraint, action->variable, 1.0);
 300   XBT_OUT;
 301   return (surf_action_t) action;
 302 }
 303
 304 static surf_action_t action_sleep(void *cpu, double duration)
 305 {
 306   surf_action_cpu_Cas01_t action = NULL;
 307   duration=MAX(duration,MAXMIN_PRECISION);
 308   XBT_IN2("(%s,%g)", ((cpu_Cas01_t) cpu)->name, duration);
 309   action = (surf_action_cpu_Cas01_t) execute(cpu, 1.0);
 310   action->generic_action.max_duration = duration;
 311   action->suspended = 2;
 312
 313   lmm_update_variable_weight(cpu_maxmin_system, action->variable, 0.0);
 314   XBT_OUT;
 315   return (surf_action_t) action;
 316 }
 317
 318 static void action_suspend(surf_action_t action)
 319 {
 320   XBT_IN1("(%p)", action);
 321   if (((surf_action_cpu_Cas01_t) action)->suspended != 2) {
 322     lmm_update_variable_weight(cpu_maxmin_system,
 323                                ((surf_action_cpu_Cas01_t) action)->
 324                                variable, 0.0);
 325     ((surf_action_cpu_Cas01_t) action)->suspended = 1;
 326   }
 327   XBT_OUT;
 328 }
 329
 330 static void action_resume(surf_action_t action)
 331 {
 332   XBT_IN1("(%p)", action);
 333   if (((surf_action_cpu_Cas01_t) action)->suspended != 2) {
 334     lmm_update_variable_weight(cpu_maxmin_system,
 335                                ((surf_action_cpu_Cas01_t) action)->
 336                                variable, action->priority);
 337     ((surf_action_cpu_Cas01_t) action)->suspended = 0;
 338   }
 339   XBT_OUT;
 340 }
 341
 342 static int action_is_suspended(surf_action_t action)
 343 {
 344   return (((surf_action_cpu_Cas01_t) action)->suspended == 1);
 345 }
 346
 347 static void action_set_max_duration(surf_action_t action, double duration)
 348 {
 349   XBT_IN2("(%p,%g)", action, duration);
 350   action->max_duration = duration;
 351   XBT_OUT;
 352 }
 353
 354 static void action_set_priority(surf_action_t action, double priority)
 355 {
 356   XBT_IN2("(%p,%g)", action, priority);
 357   action->priority = priority;
 358   lmm_update_variable_weight(cpu_maxmin_system, ((surf_action_cpu_Cas01_t) action)->variable, priority);
 359
 360   XBT_OUT;
 361 }
 362
 363 static e_surf_cpu_state_t get_state(void *cpu)
 364 {
 365   return ((cpu_Cas01_t) cpu)->state_current;
 366 }
 367
 368 static double get_speed(void *cpu, double load)
 369 {
 370   return load * (((cpu_Cas01_t) cpu)->power_scale);
 371 }
 372
 373 static double get_available_speed(void *cpu)
 374 {
 375   /* number between 0 and 1 */
 376   return ((cpu_Cas01_t) cpu)->power_current;
 377 }
 378
 379 static xbt_dict_t get_properties(void *cpu)
 380 {
 381  return ((cpu_Cas01_t) cpu)->properties;
 382 }
 383
 384 static void finalize(void)
 385 {
 386   xbt_dict_free(&cpu_set);
 387   xbt_swag_free(surf_cpu_model->common_public->states.ready_action_set);
 388   xbt_swag_free(surf_cpu_model->common_public->states.
 389                 running_action_set);
 390   xbt_swag_free(surf_cpu_model->common_public->states.
 391                 failed_action_set);
 392   xbt_swag_free(surf_cpu_model->common_public->states.done_action_set);
 393   free(surf_cpu_model->common_public);
 394   free(surf_cpu_model->common_private);
 395   free(surf_cpu_model->extension_public);
 396
 397   free(surf_cpu_model);
 398   surf_cpu_model = NULL;
 399 }
 400
 401 static void surf_cpu_model_init_internal(void)
 402 {
 403   s_surf_action_t action;
 404
 405   surf_cpu_model = xbt_new0(s_surf_cpu_model_t, 1);
 406
 407   surf_cpu_model->common_private =
 408       xbt_new0(s_surf_model_private_t, 1);
 409   surf_cpu_model->common_public = xbt_new0(s_surf_model_public_t, 1);
 410
 411   surf_cpu_model->extension_public =
 412       xbt_new0(s_surf_cpu_model_extension_public_t, 1);
 413
 414   surf_cpu_model->common_public->states.ready_action_set =
 415       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 416   surf_cpu_model->common_public->states.running_action_set =
 417       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 418   surf_cpu_model->common_public->states.failed_action_set =
 419       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 420   surf_cpu_model->common_public->states.done_action_set =
 421       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 422
 423   surf_cpu_model->common_public->name_service = name_service;
 424   surf_cpu_model->common_public->get_resource_name = get_resource_name;
 425   surf_cpu_model->common_public->action_get_state =
 426       surf_action_get_state;
 427   surf_cpu_model->common_public->action_get_start_time =
 428       surf_action_get_start_time;
 429   surf_cpu_model->common_public->action_get_finish_time =
 430       surf_action_get_finish_time;
 431   surf_cpu_model->common_public->action_free = action_free;
 432   surf_cpu_model->common_public->action_use = action_use;
 433   surf_cpu_model->common_public->action_cancel = action_cancel;
 434   surf_cpu_model->common_public->action_recycle = action_recycle;
 435   surf_cpu_model->common_public->action_change_state =
 436       action_change_state;
 437   surf_cpu_model->common_public->action_set_data = surf_action_set_data;
 438   surf_cpu_model->common_public->name = "CPU";
 439
 440   surf_cpu_model->common_private->resource_used = resource_used;
 441   surf_cpu_model->common_private->share_resources = share_resources;
 442   surf_cpu_model->common_private->update_actions_state =
 443       update_actions_state;
 444   surf_cpu_model->common_private->update_resource_state =
 445       update_resource_state;
 446   surf_cpu_model->common_private->finalize = finalize;
 447
 448   surf_cpu_model->common_public->suspend = action_suspend;
 449   surf_cpu_model->common_public->resume = action_resume;
 450   surf_cpu_model->common_public->is_suspended = action_is_suspended;
 451   surf_cpu_model->common_public->set_max_duration =
 452       action_set_max_duration;
 453   surf_cpu_model->common_public->set_priority = action_set_priority;
 454   surf_cpu_model->extension_public->execute = execute;
 455   surf_cpu_model->extension_public->sleep = action_sleep;
 456
 457   surf_cpu_model->extension_public->get_state = get_state;
 458   surf_cpu_model->extension_public->get_speed = get_speed;
 459   surf_cpu_model->extension_public->get_available_speed =
 460       get_available_speed;
 461   /*manage the properties of the cpu*/
 462   surf_cpu_model->common_public->get_properties = get_properties;
 463
 464   if(!cpu_set) cpu_set = xbt_dict_new();
 465   if (!cpu_maxmin_system) cpu_maxmin_system = lmm_system_new();
 466 }
 467
 468 /*********************************************************************/
 469 /* Basic sharing model for CPU: that is where all this started... ;) */
 470 /*********************************************************************/
 471 /* @InProceedings{casanova01simgrid, */
 472 /*   author =       "H. Casanova", */
 473 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 474 /*                  and the Grid (CCGrid'01)", */
 475 /*   publisher =    "IEEE Computer Society", */
 476 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 477 /*                  Scheduling", */
 478 /*   year =         "2001", */
 479 /*   month =        may, */
 480 /*   note =         "Available at */
 481 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 482 /* } */
 483 void surf_cpu_model_init_Cas01(const char *filename)
 484 {
 485   if (surf_cpu_model)
 486     return;
 487   surf_cpu_model_init_internal();
 488   define_callbacks(filename);
 489   xbt_dynar_push(model_list, &surf_cpu_model);
 490 }