src/surf/cpu_cas01.cpp

   1 /* Copyright (c) 2009-2011, 2013-2015. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #include "cpu_cas01.hpp"
   8 #include "cpu_ti.hpp"
   9 #include "maxmin_private.hpp"
  10 #include "simgrid/sg_config.h"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu,
  13                                 "Logging specific to the SURF CPU IMPROVED module");
  14
  15 /*********
  16  * Model *
  17  *********/
  18 void surf_cpu_model_init_Cas01()
  19 {
  20   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  21
  22   xbt_assert(!surf_cpu_model_pm);
  23   xbt_assert(!surf_cpu_model_vm);
  24
  25   if (!strcmp(optim, "TI")) {
  26     surf_cpu_model_init_ti();
  27     return;
  28   }
  29
  30   surf_cpu_model_pm = new CpuCas01Model();
  31   surf_cpu_model_vm  = new CpuCas01Model();
  32
  33   sg_platf_postparse_add_cb(cpu_add_traces);
  34
  35   Model *model_pm = surf_cpu_model_pm;
  36   Model *model_vm = surf_cpu_model_vm;
  37   xbt_dynar_push(all_existing_models, &model_pm);
  38   xbt_dynar_push(all_existing_models, &model_vm);
  39 }
  40
  41 CpuCas01Model::CpuCas01Model() : CpuModel()
  42 {
  43   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  44   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
  45
  46   if (!strcmp(optim, "Full")) {
  47     p_updateMechanism = UM_FULL;
  48     m_selectiveUpdate = select;
  49   } else if (!strcmp(optim, "Lazy")) {
  50     p_updateMechanism = UM_LAZY;
  51     m_selectiveUpdate = 1;
  52     xbt_assert((select == 1)
  53                ||
  54                (xbt_cfg_is_default_value
  55                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
  56                "Disabling selective update while using the lazy update mechanism is dumb!");
  57   } else {
  58     xbt_die("Unsupported optimization (%s) for this model", optim);
  59   }
  60
  61   p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
  62
  63   if (getUpdateMechanism() == UM_LAZY) {
  64         shareResources = &CpuCas01Model::shareResourcesLazy;
  65         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
  66
  67   } else if (getUpdateMechanism() == UM_FULL) {
  68         shareResources = &CpuCas01Model::shareResourcesFull;
  69         updateActionsState = &CpuCas01Model::updateActionsStateFull;
  70   } else
  71     xbt_die("Invalid cpu update mechanism!");
  72
  73   if (!p_maxminSystem) {
  74     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
  75   }
  76
  77   if (getUpdateMechanism() == UM_LAZY) {
  78     p_actionHeap = xbt_heap_new(8, NULL);
  79     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
  80     p_modifiedSet = new ActionLmmList();
  81     p_maxminSystem->keep_track = p_modifiedSet;
  82   }
  83 }
  84
  85 CpuCas01Model::~CpuCas01Model()
  86 {
  87   lmm_system_free(p_maxminSystem);
  88   p_maxminSystem = NULL;
  89
  90   if (p_actionHeap)
  91     xbt_heap_free(p_actionHeap);
  92   delete p_modifiedSet;
  93
  94   surf_cpu_model_pm = NULL;
  95
  96   delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
  97 }
  98
  99 Cpu *CpuCas01Model::createCpu(const char *name, xbt_dynar_t power_peak,
 100                                   int pstate, double power_scale,
 101                           tmgr_trace_t power_trace, int core,
 102                           e_surf_resource_state_t state_initial,
 103                           tmgr_trace_t state_trace,
 104                           xbt_dict_t cpu_properties)
 105 {
 106   Cpu *cpu = NULL;
 107   sg_host_t host = sg_host_by_name(name);
 108   xbt_assert(!sg_host_surfcpu(host),
 109              "Host '%s' declared several times in the platform file",
 110              name);
 111   xbt_assert(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
 112       "Power has to be >0.0. Did you forget to specify the mandatory power attribute?");
 113   xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
 114
 115   cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
 116   sg_host_surfcpu_register(host, cpu);
 117   return cpu;
 118 }
 119
 120 double CpuCas01Model::shareResourcesFull(double /*now*/)
 121 {
 122   return Model::shareResourcesMaxMin(getRunningActionSet(),
 123                              p_maxminSystem, lmm_solve);
 124 }
 125
 126 void CpuCas01Model::addTraces()
 127 {
 128   xbt_dict_cursor_t cursor = NULL;
 129   char *trace_name, *elm;
 130   static int called = 0;
 131   if (called)
 132     return;
 133   called = 1;
 134
 135   /* connect all traces relative to hosts */
 136   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 137     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 138     CpuCas01 *host = static_cast<CpuCas01*>(sg_host_surfcpu(sg_host_by_name(elm)));
 139
 140     xbt_assert(host, "Host %s undefined", elm);
 141     xbt_assert(trace, "Trace %s undefined", trace_name);
 142
 143     host->setStateEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
 144   }
 145
 146   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 147     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 148     CpuCas01 *host = static_cast<CpuCas01*>(sg_host_surfcpu(sg_host_by_name(elm)));
 149
 150     xbt_assert(host, "Host %s undefined", elm);
 151     xbt_assert(trace, "Trace %s undefined", trace_name);
 152
 153     host->setPowerEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
 154   }
 155 }
 156
 157 /************
 158  * Resource *
 159  ************/
 160 CpuCas01::CpuCas01(CpuCas01Model *model, const char *name, xbt_dynar_t powerPeak,
 161                          int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
 162                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
 163                          xbt_dict_t properties)
 164 : Cpu(model, name, properties,
 165           lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
 166           core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale,
 167     stateInitial) {
 168   p_powerEvent = NULL;
 169
 170   // Copy the power peak array:
 171   p_powerPeakList = xbt_dynar_new(sizeof(double), nullptr);
 172   unsigned long n = xbt_dynar_length(powerPeak);
 173   for (unsigned long i = 0; i != n; ++i) {
 174     double value = xbt_dynar_get_as(powerPeak, i, double);
 175     xbt_dynar_push(p_powerPeakList, &value);
 176   }
 177
 178   m_pstate = pstate;
 179
 180   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_powerPeak, m_pstate);
 181
 182   m_core = core;
 183   if (powerTrace)
 184     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, this);
 185
 186   if (stateTrace)
 187     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, this);
 188 }
 189
 190 CpuCas01::~CpuCas01(){
 191   if (getModel() == surf_cpu_model_pm)
 192     xbt_dynar_free(&p_powerPeakList);
 193 }
 194
 195 void CpuCas01::setStateEvent(tmgr_trace_event_t stateEvent)
 196 {
 197   p_stateEvent = stateEvent;
 198 }
 199
 200 void CpuCas01::setPowerEvent(tmgr_trace_event_t powerEvent)
 201 {
 202   p_powerEvent = powerEvent;
 203 }
 204
 205 xbt_dynar_t CpuCas01::getPowerPeakList(){
 206   return p_powerPeakList;
 207 }
 208
 209 int CpuCas01::getPState()
 210 {
 211   return m_pstate;
 212 }
 213
 214 bool CpuCas01::isUsed()
 215 {
 216   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 217 }
 218
 219 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
 220 {
 221   lmm_variable_t var = NULL;
 222   lmm_element_t elem = NULL;
 223
 224   if (event_type == p_powerEvent) {
 225         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 226         xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
 227
 228     m_powerScale = value;
 229     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
 230                                 m_core * m_powerScale *
 231                                 m_powerPeak);
 232     TRACE_surf_host_set_power(date, getName(),
 233                               m_core * m_powerScale *
 234                               m_powerPeak);
 235     while ((var = lmm_get_var_from_cnst
 236             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
 237       CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
 238
 239       lmm_update_variable_bound(getModel()->getMaxminSystem(),
 240                                 action->getVariable(),
 241                                 m_powerScale * m_powerPeak);
 242     }
 243     if (tmgr_trace_event_free(event_type))
 244       p_powerEvent = NULL;
 245   } else if (event_type == p_stateEvent) {
 246         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 247     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
 248
 249     if (value > 0) {
 250       if(getState() == SURF_RESOURCE_OFF)
 251         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
 252       setState(SURF_RESOURCE_ON);
 253     } else {
 254       lmm_constraint_t cnst = getConstraint();
 255
 256       setState(SURF_RESOURCE_OFF);
 257
 258       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
 259         Action *action = static_cast<Action*>(lmm_variable_id(var));
 260
 261         if (action->getState() == SURF_ACTION_RUNNING ||
 262             action->getState() == SURF_ACTION_READY ||
 263             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
 264           action->setFinishTime(date);
 265           action->setState(SURF_ACTION_FAILED);
 266         }
 267       }
 268     }
 269     if (tmgr_trace_event_free(event_type))
 270       p_stateEvent = NULL;
 271   } else {
 272     XBT_CRITICAL("Unknown event ! \n");
 273     xbt_abort();
 274   }
 275
 276   return;
 277 }
 278
 279 CpuAction *CpuCas01::execute(double size)
 280 {
 281
 282   XBT_IN("(%s,%g)", getName(), size);
 283   CpuCas01Action *action = new CpuCas01Action(getModel(), size, getState() != SURF_RESOURCE_ON,
 284                                                               m_powerScale * m_powerPeak, getConstraint());
 285
 286   XBT_OUT();
 287   return action;
 288 }
 289
 290 CpuAction *CpuCas01::sleep(double duration)
 291 {
 292   if (duration > 0)
 293     duration = MAX(duration, sg_surf_precision);
 294
 295   XBT_IN("(%s,%g)", getName(), duration);
 296   CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, getState() != SURF_RESOURCE_ON,
 297                                                       m_powerScale * m_powerPeak, getConstraint());
 298
 299
 300   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 301   action->m_maxDuration = duration;
 302   action->m_suspended = 2;
 303   if (duration == NO_MAX_DURATION) {
 304     /* Move to the *end* of the corresponding action set. This convention
 305        is used to speed up update_resource_state  */
 306         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
 307     action->p_stateSet = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 308     action->getStateSet()->push_back(*action);
 309   }
 310
 311   lmm_update_variable_weight(getModel()->getMaxminSystem(),
 312                              action->getVariable(), 0.0);
 313   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
 314     action->heapRemove(getModel()->getActionHeap());
 315     // this is necessary for a variable with weight 0 since such
 316     // variables are ignored in lmm and we need to set its max_duration
 317     // correctly at the next call to share_resources
 318     getModel()->getModifiedSet()->push_front(*action);
 319   }
 320
 321   XBT_OUT();
 322   return action;
 323 }
 324
 325 double CpuCas01::getCurrentPowerPeak()
 326 {
 327   return m_powerPeak;
 328 }
 329
 330 double CpuCas01::getPowerPeakAt(int pstate_index)
 331 {
 332   xbt_dynar_t plist = p_powerPeakList;
 333   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 334
 335   return xbt_dynar_get_as(plist, pstate_index, double);
 336 }
 337
 338 int CpuCas01::getNbPstates()
 339 {
 340   return xbt_dynar_length(p_powerPeakList);
 341 }
 342
 343 void CpuCas01::setPstate(int pstate_index)
 344 {
 345   xbt_dynar_t plist = p_powerPeakList;
 346   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 347
 348   double new_pstate = xbt_dynar_get_as(plist, pstate_index, double);
 349   m_pstate = pstate_index;
 350   m_powerPeak = new_pstate;
 351 }
 352
 353 int CpuCas01::getPstate()
 354 {
 355   return m_pstate;
 356 }
 357
 358 /**********
 359  * Action *
 360  **********/
 361
 362 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double power, lmm_constraint_t constraint)
 363  : CpuAction(model, cost, failed,
 364                      lmm_variable_new(model->getMaxminSystem(), this,
 365                      1.0, power, 1))
 366 {
 367   m_suspended = 0;
 368   if (model->getUpdateMechanism() == UM_LAZY) {
 369     m_indexHeap = -1;
 370     m_lastUpdate = surf_get_clock();
 371     m_lastValue = 0.0;
 372   }
 373   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
 374 }