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 "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  * CallBacks *
  17  *************/
  18
  19 static void cpu_define_callbacks()
  20 {
  21   sg_platf_host_add_cb(cpu_parse_init);
  22   sg_platf_postparse_add_cb(cpu_add_traces);
  23 }
  24
  25 /*********
  26  * Model *
  27  *********/
  28 void surf_cpu_model_init_Cas01()
  29 {
  30   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  31
  32   xbt_assert(!surf_cpu_model_pm);
  33   xbt_assert(!surf_cpu_model_vm);
  34
  35   if (!strcmp(optim, "TI")) {
  36     surf_cpu_model_init_ti();
  37     return;
  38   }
  39
  40   surf_cpu_model_pm = new CpuCas01Model();
  41   surf_cpu_model_vm  = new CpuCas01Model();
  42
  43   cpu_define_callbacks();
  44   ModelPtr model_pm = surf_cpu_model_pm;
  45   ModelPtr model_vm = surf_cpu_model_vm;
  46   xbt_dynar_push(model_list, &model_pm);
  47   xbt_dynar_push(model_list, &model_vm);
  48 }
  49
  50 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
  51 {
  52   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  53   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
  54
  55   if (!strcmp(optim, "Full")) {
  56     p_updateMechanism = UM_FULL;
  57     m_selectiveUpdate = select;
  58   } else if (!strcmp(optim, "Lazy")) {
  59     p_updateMechanism = UM_LAZY;
  60     m_selectiveUpdate = 1;
  61     xbt_assert((select == 1)
  62                ||
  63                (xbt_cfg_is_default_value
  64                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
  65                "Disabling selective update while using the lazy update mechanism is dumb!");
  66   } else {
  67     xbt_die("Unsupported optimization (%s) for this model", optim);
  68   }
  69
  70   p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
  71
  72   if (getUpdateMechanism() == UM_LAZY) {
  73         shareResources = &CpuCas01Model::shareResourcesLazy;
  74         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
  75
  76   } else if (getUpdateMechanism() == UM_FULL) {
  77         shareResources = &CpuCas01Model::shareResourcesFull;
  78         updateActionsState = &CpuCas01Model::updateActionsStateFull;
  79   } else
  80     xbt_die("Invalid cpu update mechanism!");
  81
  82   if (!p_maxminSystem) {
  83     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
  84   }
  85
  86   if (getUpdateMechanism() == UM_LAZY) {
  87     p_actionHeap = xbt_heap_new(8, NULL);
  88     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
  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     xbt_heap_free(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   sg_host_t host = sg_host_by_name(name);
 117   xbt_assert(!sg_host_surfcpu(host),
 118              "Host '%s' declared several times in the platform file",
 119              name);
 120   xbt_assert(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
 121       "Power has to be >0.0. Did you forget to specify the mandatory power attribute?");
 122   xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
 123
 124   cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
 125   sg_host_surfcpu_set(host, cpu);
 126
 127   return cpu;
 128 }
 129
 130 double CpuCas01Model::shareResourcesFull(double /*now*/)
 131 {
 132   return Model::shareResourcesMaxMin(getRunningActionSet(),
 133                              p_maxminSystem, lmm_solve);
 134 }
 135
 136 void CpuCas01Model::addTraces()
 137 {
 138   xbt_dict_cursor_t cursor = NULL;
 139   char *trace_name, *elm;
 140   static int called = 0;
 141   if (called)
 142     return;
 143   called = 1;
 144
 145   /* connect all traces relative to hosts */
 146   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 147     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 148     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(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->setStateEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
 154   }
 155
 156   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 157     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 158     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(sg_host_surfcpu(sg_host_by_name(elm)));
 159
 160     xbt_assert(host, "Host %s undefined", elm);
 161     xbt_assert(trace, "Trace %s undefined", trace_name);
 162
 163     host->setPowerEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
 164   }
 165 }
 166
 167 /************
 168  * Resource *
 169  ************/
 170 CpuCas01::CpuCas01(CpuCas01ModelPtr model, const char *name, xbt_dynar_t powerPeak,
 171                          int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
 172                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
 173                          xbt_dict_t properties)
 174 : Cpu(model, name, properties,
 175           lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
 176           core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale) {
 177   p_powerEvent = NULL;
 178   p_powerPeakList = powerPeak;
 179   m_pstate = pstate;
 180
 181   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_powerPeak, m_pstate);
 182
 183   m_core = core;
 184   setState(stateInitial);
 185   if (powerTrace)
 186     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, this);
 187
 188   if (stateTrace)
 189     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, this);
 190 }
 191
 192 CpuCas01::~CpuCas01(){
 193   if (getModel() == surf_cpu_model_pm)
 194     xbt_dynar_free(&p_powerPeakList);
 195 }
 196
 197 void CpuCas01::setStateEvent(tmgr_trace_event_t stateEvent)
 198 {
 199   p_stateEvent = stateEvent;
 200 }
 201
 202 void CpuCas01::setPowerEvent(tmgr_trace_event_t powerEvent)
 203 {
 204   p_powerEvent = powerEvent;
 205 }
 206
 207 xbt_dynar_t CpuCas01::getPowerPeakList(){
 208   return p_powerPeakList;
 209 }
 210
 211 int CpuCas01::getPState()
 212 {
 213   return m_pstate;
 214 }
 215
 216 bool CpuCas01::isUsed()
 217 {
 218   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 219 }
 220
 221 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
 222 {
 223   lmm_variable_t var = NULL;
 224   lmm_element_t elem = NULL;
 225
 226   if (event_type == p_powerEvent) {
 227         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 228         xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
 229
 230     m_powerScale = value;
 231     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
 232                                 m_core * m_powerScale *
 233                                 m_powerPeak);
 234     TRACE_surf_host_set_power(date, getName(),
 235                               m_core * m_powerScale *
 236                               m_powerPeak);
 237     while ((var = lmm_get_var_from_cnst
 238             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
 239       CpuCas01ActionPtr action = static_cast<CpuCas01ActionPtr>(lmm_variable_id(var));
 240
 241       lmm_update_variable_bound(getModel()->getMaxminSystem(),
 242                                 action->getVariable(),
 243                                 m_powerScale * m_powerPeak);
 244     }
 245     if (tmgr_trace_event_free(event_type))
 246       p_powerEvent = NULL;
 247   } else if (event_type == p_stateEvent) {
 248         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 249     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
 250
 251     if (value > 0) {
 252       if(getState() == SURF_RESOURCE_OFF)
 253         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
 254       setState(SURF_RESOURCE_ON);
 255     } else {
 256       lmm_constraint_t cnst = getConstraint();
 257
 258       setState(SURF_RESOURCE_OFF);
 259
 260       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
 261         ActionPtr action = static_cast<ActionPtr>(lmm_variable_id(var));
 262
 263         if (action->getState() == SURF_ACTION_RUNNING ||
 264             action->getState() == SURF_ACTION_READY ||
 265             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
 266           action->setFinishTime(date);
 267           action->setState(SURF_ACTION_FAILED);
 268         }
 269       }
 270     }
 271     if (tmgr_trace_event_free(event_type))
 272       p_stateEvent = NULL;
 273   } else {
 274     XBT_CRITICAL("Unknown event ! \n");
 275     xbt_abort();
 276   }
 277
 278   return;
 279 }
 280
 281 CpuActionPtr CpuCas01::execute(double size)
 282 {
 283
 284   XBT_IN("(%s,%g)", getName(), size);
 285   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), size, getState() != SURF_RESOURCE_ON,
 286                                                               m_powerScale * m_powerPeak, getConstraint());
 287
 288   XBT_OUT();
 289   return action;
 290 }
 291
 292 CpuActionPtr CpuCas01::sleep(double duration)
 293 {
 294   if (duration > 0)
 295     duration = MAX(duration, sg_surf_precision);
 296
 297   XBT_IN("(%s,%g)", getName(), duration);
 298   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), 1.0, getState() != SURF_RESOURCE_ON,
 299                                                       m_powerScale * m_powerPeak, getConstraint());
 300
 301
 302   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 303   action->m_maxDuration = duration;
 304   action->m_suspended = 2;
 305   if (duration == NO_MAX_DURATION) {
 306     /* Move to the *end* of the corresponding action set. This convention
 307        is used to speed up update_resource_state  */
 308         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
 309     action->p_stateSet = static_cast<CpuCas01ModelPtr>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 310     action->getStateSet()->push_back(*action);
 311   }
 312
 313   lmm_update_variable_weight(getModel()->getMaxminSystem(),
 314                              action->getVariable(), 0.0);
 315   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
 316     action->heapRemove(getModel()->getActionHeap());
 317     // this is necessary for a variable with weight 0 since such
 318     // variables are ignored in lmm and we need to set its max_duration
 319     // correctly at the next call to share_resources
 320     getModel()->getModifiedSet()->push_front(*action);
 321   }
 322
 323   XBT_OUT();
 324   return action;
 325 }
 326
 327 double CpuCas01::getCurrentPowerPeak()
 328 {
 329   return m_powerPeak;
 330 }
 331
 332 double CpuCas01::getPowerPeakAt(int pstate_index)
 333 {
 334   xbt_dynar_t plist = p_powerPeakList;
 335   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 336
 337   return xbt_dynar_get_as(plist, pstate_index, double);
 338 }
 339
 340 int CpuCas01::getNbPstates()
 341 {
 342   return xbt_dynar_length(p_powerPeakList);
 343 }
 344
 345 void CpuCas01::setPstate(int pstate_index)
 346 {
 347   xbt_dynar_t plist = p_powerPeakList;
 348   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 349
 350   double new_pstate = xbt_dynar_get_as(plist, pstate_index, double);
 351   m_pstate = pstate_index;
 352   m_powerPeak = new_pstate;
 353 }
 354
 355 int CpuCas01::getPstate()
 356 {
 357   return m_pstate;
 358 }
 359
 360 /**********
 361  * Action *
 362  **********/
 363
 364 CpuCas01Action::CpuCas01Action(ModelPtr model, double cost, bool failed, double power, lmm_constraint_t constraint)
 365  : CpuAction(model, cost, failed,
 366                      lmm_variable_new(model->getMaxminSystem(), this,
 367                      1.0, power, 1))
 368 {
 369   m_suspended = 0;
 370   if (model->getUpdateMechanism() == UM_LAZY) {
 371     m_indexHeap = -1;
 372     m_lastUpdate = surf_get_clock();
 373     m_lastValue = 0.0;
 374   }
 375   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
 376 }