src/surf/cpu_cas01.cpp

   1 /* Copyright (c) 2009-2011, 2013-2014. 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 "plugins/energy.hpp"
  10 #include "maxmin_private.hpp"
  11 #include "simgrid/sg_config.h"
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu,
  14                                 "Logging specific to the SURF CPU IMPROVED module");
  15
  16 /*************
  17  * CallBacks *
  18  *************/
  19
  20 static void cpu_define_callbacks()
  21 {
  22   sg_platf_host_add_cb(cpu_parse_init);
  23   sg_platf_postparse_add_cb(cpu_add_traces);
  24 }
  25
  26 /*********
  27  * Model *
  28  *********/
  29 void surf_cpu_model_init_Cas01()
  30 {
  31   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  32
  33   xbt_assert(!surf_cpu_model_pm);
  34   xbt_assert(!surf_cpu_model_vm);
  35
  36   if (!strcmp(optim, "TI")) {
  37     surf_cpu_model_init_ti();
  38     return;
  39   }
  40
  41   surf_cpu_model_pm = new CpuCas01Model();
  42   surf_cpu_model_vm  = new CpuCas01Model();
  43
  44   cpu_define_callbacks();
  45   ModelPtr model_pm = surf_cpu_model_pm;
  46   ModelPtr model_vm = surf_cpu_model_vm;
  47   xbt_dynar_push(model_list, &model_pm);
  48   xbt_dynar_push(model_list, &model_vm);
  49 }
  50
  51 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
  52 {
  53   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  54   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
  55
  56   if (!strcmp(optim, "Full")) {
  57     p_updateMechanism = UM_FULL;
  58     m_selectiveUpdate = select;
  59   } else if (!strcmp(optim, "Lazy")) {
  60     p_updateMechanism = UM_LAZY;
  61     m_selectiveUpdate = 1;
  62     xbt_assert((select == 1)
  63                ||
  64                (xbt_cfg_is_default_value
  65                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
  66                "Disabling selective update while using the lazy update mechanism is dumb!");
  67   } else {
  68     xbt_die("Unsupported optimization (%s) for this model", optim);
  69   }
  70
  71   p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
  72
  73   if (getUpdateMechanism() == UM_LAZY) {
  74         shareResources = &CpuCas01Model::shareResourcesLazy;
  75         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
  76
  77   } else if (getUpdateMechanism() == UM_FULL) {
  78         shareResources = &CpuCas01Model::shareResourcesFull;
  79         updateActionsState = &CpuCas01Model::updateActionsStateFull;
  80   } else
  81     xbt_die("Invalid cpu update mechanism!");
  82
  83   if (!p_maxminSystem) {
  84     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
  85   }
  86
  87   if (getUpdateMechanism() == UM_LAZY) {
  88     p_actionHeap = new ActionHeap();
  89     p_modifiedSet = new ActionLmmList();
  90     p_maxminSystem->keep_track = p_modifiedSet;
  91   }
  92 }
  93
  94 CpuCas01Model::~CpuCas01Model()
  95 {
  96   lmm_system_free(p_maxminSystem);
  97   p_maxminSystem = NULL;
  98
  99   if (p_actionHeap)
 100     delete p_actionHeap;
 101   delete p_modifiedSet;
 102
 103   surf_cpu_model_pm = NULL;
 104
 105   delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 106 }
 107
 108 CpuPtr CpuCas01Model::createCpu(const char *name, xbt_dynar_t power_peak,
 109                                   int pstate, double power_scale,
 110                           tmgr_trace_t power_trace, int core,
 111                           e_surf_resource_state_t state_initial,
 112                           tmgr_trace_t state_trace,
 113                           xbt_dict_t cpu_properties)
 114 {
 115   CpuPtr cpu = NULL;
 116   xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
 117              "Host '%s' declared several times in the platform file",
 118              name);
 119   xbt_assert(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
 120       "Power has to be >0.0");
 121   xbt_assert(core > 0, "Invalid number of cores %d", core);
 122
 123   cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
 124   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
 125
 126   return cpu;
 127 }
 128
 129 double CpuCas01Model::shareResourcesFull(double /*now*/)
 130 {
 131   return Model::shareResourcesMaxMin(getRunningActionSet(),
 132                              p_maxminSystem, lmm_solve);
 133 }
 134
 135 void CpuCas01Model::addTraces()
 136 {
 137   xbt_dict_cursor_t cursor = NULL;
 138   char *trace_name, *elm;
 139   static int called = 0;
 140   if (called)
 141     return;
 142   called = 1;
 143
 144   /* connect all traces relative to hosts */
 145   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 146     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 147     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
 148
 149     xbt_assert(host, "Host %s undefined", elm);
 150     xbt_assert(trace, "Trace %s undefined", trace_name);
 151
 152     host->setStateEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
 153   }
 154
 155   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 156     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 157     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
 158
 159     xbt_assert(host, "Host %s undefined", elm);
 160     xbt_assert(trace, "Trace %s undefined", trace_name);
 161
 162     host->setPowerEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
 163   }
 164 }
 165
 166 /************
 167  * Resource *
 168  ************/
 169 CpuCas01::CpuCas01(CpuCas01ModelPtr model, const char *name, xbt_dynar_t powerPeak,
 170                          int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
 171                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
 172                          xbt_dict_t properties)
 173 : Cpu(model, name, properties,
 174           lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
 175           core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale) {
 176   p_powerEvent = NULL;
 177   p_powerPeakList = powerPeak;
 178   m_pstate = pstate;
 179
 180   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_powerPeak, m_pstate);
 181
 182   m_core = core;
 183   setState(stateInitial);
 184   if (powerTrace)
 185     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, this);
 186
 187   if (stateTrace)
 188     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, this);
 189 }
 190
 191 CpuCas01::~CpuCas01(){
 192   if (getModel() == surf_cpu_model_pm)
 193     xbt_dynar_free(&p_powerPeakList);
 194 }
 195
 196 void CpuCas01::setStateEvent(tmgr_trace_event_t stateEvent)
 197 {
 198   p_stateEvent = stateEvent;
 199 }
 200
 201 void CpuCas01::setPowerEvent(tmgr_trace_event_t powerEvent)
 202 {
 203   p_powerEvent = powerEvent;
 204 }
 205
 206 xbt_dynar_t CpuCas01::getPowerPeakList(){
 207   return p_powerPeakList;
 208 }
 209
 210 int CpuCas01::getPState()
 211 {
 212   return m_pstate;
 213 }
 214
 215 bool CpuCas01::isUsed()
 216 {
 217   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 218 }
 219
 220 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
 221 {
 222   lmm_variable_t var = NULL;
 223   lmm_element_t elem = NULL;
 224
 225   if (event_type == p_powerEvent) {
 226         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 227         xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
 228
 229     m_powerScale = value;
 230     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
 231                                 m_core * m_powerScale *
 232                                 m_powerPeak);
 233 #ifdef HAVE_TRACING
 234     TRACE_surf_host_set_power(date, getName(),
 235                               m_core * m_powerScale *
 236                               m_powerPeak);
 237 #endif
 238     while ((var = lmm_get_var_from_cnst
 239             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
 240       CpuCas01ActionPtr action = static_cast<CpuCas01ActionPtr>(lmm_variable_id(var));
 241
 242       lmm_update_variable_bound(getModel()->getMaxminSystem(),
 243                                 action->getVariable(),
 244                                 m_powerScale * m_powerPeak);
 245     }
 246     if (tmgr_trace_event_free(event_type))
 247       p_powerEvent = NULL;
 248   } else if (event_type == p_stateEvent) {
 249         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 250     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
 251
 252     if (value > 0) {
 253       if(getState() == SURF_RESOURCE_OFF)
 254         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
 255       setState(SURF_RESOURCE_ON);
 256     } else {
 257       lmm_constraint_t cnst = getConstraint();
 258
 259       setState(SURF_RESOURCE_OFF);
 260
 261       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
 262         ActionPtr action = static_cast<ActionPtr>(lmm_variable_id(var));
 263
 264         if (action->getState() == SURF_ACTION_RUNNING ||
 265             action->getState() == SURF_ACTION_READY ||
 266             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
 267           action->setFinishTime(date);
 268           action->setState(SURF_ACTION_FAILED);
 269         }
 270       }
 271     }
 272     if (tmgr_trace_event_free(event_type))
 273       p_stateEvent = NULL;
 274   } else {
 275     XBT_CRITICAL("Unknown event ! \n");
 276     xbt_abort();
 277   }
 278
 279   return;
 280 }
 281
 282 CpuActionPtr CpuCas01::execute(double size)
 283 {
 284
 285   XBT_IN("(%s,%g)", getName(), size);
 286   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), size, getState() != SURF_RESOURCE_ON,
 287                                                               m_powerScale * m_powerPeak, getConstraint());
 288
 289   XBT_OUT();
 290   return action;
 291 }
 292
 293 CpuActionPtr CpuCas01::sleep(double duration)
 294 {
 295   if (duration > 0)
 296     duration = MAX(duration, sg_surf_precision);
 297
 298   XBT_IN("(%s,%g)", getName(), duration);
 299   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), 1.0, getState() != SURF_RESOURCE_ON,
 300                                                       m_powerScale * m_powerPeak, getConstraint());
 301
 302
 303   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 304   action->m_maxDuration = duration;
 305   action->m_suspended = 2;
 306   if (duration == NO_MAX_DURATION) {
 307     /* Move to the *end* of the corresponding action set. This convention
 308        is used to speed up update_resource_state  */
 309         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
 310     action->p_stateSet = static_cast<CpuCas01ModelPtr>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 311     action->getStateSet()->push_back(*action);
 312   }
 313
 314   lmm_update_variable_weight(getModel()->getMaxminSystem(),
 315                              action->getVariable(), 0.0);
 316   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
 317     action->heapRemove();
 318     // this is necessary for a variable with weight 0 since such
 319     // variables are ignored in lmm and we need to set its max_duration
 320     // correctly at the next call to share_resources
 321     getModel()->getModifiedSet()->push_front(*action);
 322   }
 323
 324   XBT_OUT();
 325   return action;
 326 }
 327
 328 double CpuCas01::getCurrentPowerPeak()
 329 {
 330   return m_powerPeak;
 331 }
 332
 333 double CpuCas01::getPowerPeakAt(int pstate_index)
 334 {
 335   xbt_dynar_t plist = p_powerPeakList;
 336   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 337
 338   return xbt_dynar_get_as(plist, pstate_index, double);
 339 }
 340
 341 int CpuCas01::getNbPstates()
 342 {
 343   return xbt_dynar_length(p_powerPeakList);
 344 }
 345
 346 void CpuCas01::setPowerPeakAt(int pstate_index)
 347 {
 348   xbt_dynar_t plist = p_powerPeakList;
 349   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 350
 351   double new_power_peak = xbt_dynar_get_as(plist, pstate_index, double);
 352   m_pstate = pstate_index;
 353   m_powerPeak = new_power_peak;
 354 }
 355
 356 /**********
 357  * Action *
 358  **********/
 359
 360 CpuCas01Action::CpuCas01Action(ModelPtr model, double cost, bool failed, double power, lmm_constraint_t constraint)
 361  : CpuAction(model, cost, failed,
 362                      lmm_variable_new(model->getMaxminSystem(), this,
 363                      1.0, power, 1))
 364 {
 365   m_suspended = 0;
 366   if (model->getUpdateMechanism() == UM_LAZY) {
 367     m_lastUpdate = surf_get_clock();
 368     m_lastValue = 0.0;
 369   }
 370   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
 371 }