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(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
 109       "Power has to be >0.0. Did you forget to specify the mandatory power attribute?");
 110   xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
 111
 112   cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
 113   sg_host_surfcpu_register(host, cpu);
 114   return cpu;
 115 }
 116
 117 double CpuCas01Model::shareResourcesFull(double /*now*/)
 118 {
 119   return Model::shareResourcesMaxMin(getRunningActionSet(),
 120                              p_maxminSystem, lmm_solve);
 121 }
 122
 123 void CpuCas01Model::addTraces()
 124 {
 125   xbt_dict_cursor_t cursor = NULL;
 126   char *trace_name, *elm;
 127   static int called = 0;
 128   if (called)
 129     return;
 130   called = 1;
 131
 132   /* connect all traces relative to hosts */
 133   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 134     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 135     CpuCas01 *host = static_cast<CpuCas01*>(sg_host_surfcpu(sg_host_by_name(elm)));
 136
 137     xbt_assert(host, "Host %s undefined", elm);
 138     xbt_assert(trace, "Trace %s undefined", trace_name);
 139
 140     host->setStateEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
 141   }
 142
 143   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 144     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 145     CpuCas01 *host = static_cast<CpuCas01*>(sg_host_surfcpu(sg_host_by_name(elm)));
 146
 147     xbt_assert(host, "Host %s undefined", elm);
 148     xbt_assert(trace, "Trace %s undefined", trace_name);
 149
 150     host->setPowerEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
 151   }
 152 }
 153
 154 /************
 155  * Resource *
 156  ************/
 157 CpuCas01::CpuCas01(CpuCas01Model *model, const char *name, xbt_dynar_t powerPeak,
 158                          int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
 159                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
 160                          xbt_dict_t properties)
 161 : Cpu(model, name, properties,
 162           lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
 163           core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale,
 164     stateInitial) {
 165   p_speedEvent = NULL;
 166
 167   // Copy the power peak array:
 168   p_speedPeakList = xbt_dynar_new(sizeof(double), nullptr);
 169   unsigned long n = xbt_dynar_length(powerPeak);
 170   for (unsigned long i = 0; i != n; ++i) {
 171     double value = xbt_dynar_get_as(powerPeak, i, double);
 172     xbt_dynar_push(p_speedPeakList, &value);
 173   }
 174
 175   m_pstate = pstate;
 176
 177   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_speedPeak, m_pstate);
 178
 179   m_core = core;
 180   if (powerTrace)
 181     p_speedEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, this);
 182
 183   if (stateTrace)
 184     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, this);
 185 }
 186
 187 CpuCas01::~CpuCas01(){
 188   if (getModel() == surf_cpu_model_pm)
 189     xbt_dynar_free(&p_speedPeakList);
 190 }
 191
 192 void CpuCas01::setStateEvent(tmgr_trace_event_t stateEvent)
 193 {
 194   p_stateEvent = stateEvent;
 195 }
 196
 197 void CpuCas01::setPowerEvent(tmgr_trace_event_t powerEvent)
 198 {
 199   p_speedEvent = powerEvent;
 200 }
 201
 202 xbt_dynar_t CpuCas01::getPowerPeakList(){
 203   return p_speedPeakList;
 204 }
 205
 206 int CpuCas01::getPState()
 207 {
 208   return m_pstate;
 209 }
 210
 211 bool CpuCas01::isUsed()
 212 {
 213   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 214 }
 215
 216 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
 217 {
 218   lmm_variable_t var = NULL;
 219   lmm_element_t elem = NULL;
 220
 221   if (event_type == p_speedEvent) {
 222         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 223         xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
 224
 225     m_speedScale = value;
 226     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
 227                                 m_core * m_speedScale *
 228                                 m_speedPeak);
 229     TRACE_surf_host_set_power(date, getName(),
 230                               m_core * m_speedScale *
 231                               m_speedPeak);
 232     while ((var = lmm_get_var_from_cnst
 233             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
 234       CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
 235
 236       lmm_update_variable_bound(getModel()->getMaxminSystem(),
 237                                 action->getVariable(),
 238                                 m_speedScale * m_speedPeak);
 239     }
 240     if (tmgr_trace_event_free(event_type))
 241       p_speedEvent = NULL;
 242   } else if (event_type == p_stateEvent) {
 243         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 244     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
 245
 246     if (value > 0) {
 247       if(getState() == SURF_RESOURCE_OFF)
 248         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
 249       setState(SURF_RESOURCE_ON);
 250     } else {
 251       lmm_constraint_t cnst = getConstraint();
 252
 253       setState(SURF_RESOURCE_OFF);
 254
 255       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
 256         Action *action = static_cast<Action*>(lmm_variable_id(var));
 257
 258         if (action->getState() == SURF_ACTION_RUNNING ||
 259             action->getState() == SURF_ACTION_READY ||
 260             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
 261           action->setFinishTime(date);
 262           action->setState(SURF_ACTION_FAILED);
 263         }
 264       }
 265     }
 266     if (tmgr_trace_event_free(event_type))
 267       p_stateEvent = NULL;
 268   } else {
 269     XBT_CRITICAL("Unknown event ! \n");
 270     xbt_abort();
 271   }
 272
 273   return;
 274 }
 275
 276 CpuAction *CpuCas01::execute(double size)
 277 {
 278
 279   XBT_IN("(%s,%g)", getName(), size);
 280   CpuCas01Action *action = new CpuCas01Action(getModel(), size, getState() != SURF_RESOURCE_ON,
 281                                                               m_speedScale * m_speedPeak, getConstraint());
 282
 283   XBT_OUT();
 284   return action;
 285 }
 286
 287 CpuAction *CpuCas01::sleep(double duration)
 288 {
 289   if (duration > 0)
 290     duration = MAX(duration, sg_surf_precision);
 291
 292   XBT_IN("(%s,%g)", getName(), duration);
 293   CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, getState() != SURF_RESOURCE_ON,
 294                                                       m_speedScale * m_speedPeak, getConstraint());
 295
 296
 297   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 298   action->m_maxDuration = duration;
 299   action->m_suspended = 2;
 300   if (duration == NO_MAX_DURATION) {
 301     /* Move to the *end* of the corresponding action set. This convention
 302        is used to speed up update_resource_state  */
 303         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
 304     action->p_stateSet = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 305     action->getStateSet()->push_back(*action);
 306   }
 307
 308   lmm_update_variable_weight(getModel()->getMaxminSystem(),
 309                              action->getVariable(), 0.0);
 310   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
 311     action->heapRemove(getModel()->getActionHeap());
 312     // this is necessary for a variable with weight 0 since such
 313     // variables are ignored in lmm and we need to set its max_duration
 314     // correctly at the next call to share_resources
 315     getModel()->getModifiedSet()->push_front(*action);
 316   }
 317
 318   XBT_OUT();
 319   return action;
 320 }
 321
 322 double CpuCas01::getCurrentPowerPeak()
 323 {
 324   return m_speedPeak;
 325 }
 326
 327 double CpuCas01::getPowerPeakAt(int pstate_index)
 328 {
 329   xbt_dynar_t plist = p_speedPeakList;
 330   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 331
 332   return xbt_dynar_get_as(plist, pstate_index, double);
 333 }
 334
 335 int CpuCas01::getNbPstates()
 336 {
 337   return xbt_dynar_length(p_speedPeakList);
 338 }
 339
 340 void CpuCas01::setPstate(int pstate_index)
 341 {
 342   xbt_dynar_t plist = p_speedPeakList;
 343   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 344
 345   double new_pstate = xbt_dynar_get_as(plist, pstate_index, double);
 346   m_pstate = pstate_index;
 347   m_speedPeak = new_pstate;
 348 }
 349
 350 int CpuCas01::getPstate()
 351 {
 352   return m_pstate;
 353 }
 354
 355 /**********
 356  * Action *
 357  **********/
 358
 359 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double power, lmm_constraint_t constraint)
 360  : CpuAction(model, cost, failed,
 361                      lmm_variable_new(model->getMaxminSystem(), this,
 362                      1.0, power, 1))
 363 {
 364   m_suspended = 0;
 365   if (model->getUpdateMechanism() == UM_LAZY) {
 366     m_indexHeap = -1;
 367     m_lastUpdate = surf_get_clock();
 368     m_lastValue = 0.0;
 369   }
 370   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
 371 }