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(parse_cpu_init);
  23   sg_platf_postparse_add_cb(add_traces_cpu);
  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 = static_cast<ModelPtr>(surf_cpu_model_pm);
  46   ModelPtr model_vm = static_cast<ModelPtr>(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 = xbt_heap_new(8, NULL);
  89     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
  90     p_modifiedSet = new ActionLmmList();
  91     p_maxminSystem->keep_track = p_modifiedSet;
  92   }
  93 }
  94
  95 CpuCas01Model::~CpuCas01Model()
  96 {
  97   lmm_system_free(p_maxminSystem);
  98   p_maxminSystem = NULL;
  99
 100   if (p_actionHeap)
 101     xbt_heap_free(p_actionHeap);
 102   delete p_modifiedSet;
 103
 104   surf_cpu_model_pm = NULL;
 105
 106   delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 107 }
 108
 109 void CpuCas01Model::parseInit(sg_platf_host_cbarg_t host)
 110 {
 111   createResource(host->id,
 112         host->power_peak,
 113         host->pstate,
 114         host->power_scale,
 115         host->power_trace,
 116         host->core_amount,
 117         host->initial_state,
 118         host->state_trace,
 119         host->properties);
 120 }
 121
 122 CpuPtr CpuCas01Model::createResource(const char *name, xbt_dynar_t power_peak,
 123                                   int pstate, double power_scale,
 124                           tmgr_trace_t power_trace, int core,
 125                           e_surf_resource_state_t state_initial,
 126                           tmgr_trace_t state_trace,
 127                           xbt_dict_t cpu_properties)
 128 {
 129   CpuPtr cpu = NULL;
 130   xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
 131              "Host '%s' declared several times in the platform file",
 132              name);
 133   xbt_assert(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
 134       "Power has to be >0.0");
 135   xbt_assert(core > 0, "Invalid number of cores %d", core);
 136
 137   cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
 138   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, static_cast<ResourcePtr>(cpu));
 139
 140   return cpu;
 141 }
 142
 143 double CpuCas01Model::shareResourcesFull(double /*now*/)
 144 {
 145   return Model::shareResourcesMaxMin(getRunningActionSet(),
 146                              p_maxminSystem, lmm_solve);
 147 }
 148
 149 void CpuCas01Model::addTraces()
 150 {
 151   xbt_dict_cursor_t cursor = NULL;
 152   char *trace_name, *elm;
 153   static int called = 0;
 154   if (called)
 155     return;
 156   called = 1;
 157
 158   /* connect all traces relative to hosts */
 159   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 160     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 161     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
 162
 163     xbt_assert(host, "Host %s undefined", elm);
 164     xbt_assert(trace, "Trace %s undefined", trace_name);
 165
 166     host->setStateEvent(tmgr_history_add_trace(history, trace, 0.0, 0, static_cast<ResourcePtr>(host)));
 167   }
 168
 169   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 170     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 171     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
 172
 173     xbt_assert(host, "Host %s undefined", elm);
 174     xbt_assert(trace, "Trace %s undefined", trace_name);
 175
 176     host->setPowerEvent(tmgr_history_add_trace(history, trace, 0.0, 0, static_cast<ResourcePtr>(host)));
 177   }
 178 }
 179
 180 /************
 181  * Resource *
 182  ************/
 183 CpuCas01::CpuCas01(CpuCas01ModelPtr model, const char *name, xbt_dynar_t powerPeak,
 184                          int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
 185                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
 186                          xbt_dict_t properties)
 187 : Cpu(model, name, properties,
 188           lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
 189           core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale) {
 190   p_powerEvent = NULL;
 191   p_powerPeakList = powerPeak;
 192   m_pstate = pstate;
 193
 194   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_powerPeak, m_pstate);
 195
 196   m_core = core;
 197   setState(stateInitial);
 198   if (powerTrace)
 199     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, static_cast<ResourcePtr>(this));
 200
 201   if (stateTrace)
 202     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, static_cast<ResourcePtr>(this));
 203 }
 204
 205 CpuCas01::~CpuCas01(){
 206   if (getModel() == surf_cpu_model_pm)
 207     xbt_dynar_free(&p_powerPeakList);
 208 }
 209
 210 void CpuCas01::setStateEvent(tmgr_trace_event_t stateEvent)
 211 {
 212   p_stateEvent = stateEvent;
 213 }
 214
 215 void CpuCas01::setPowerEvent(tmgr_trace_event_t powerEvent)
 216 {
 217   p_powerEvent = powerEvent;
 218 }
 219
 220 xbt_dynar_t CpuCas01::getPowerPeakList(){
 221   return p_powerPeakList;
 222 }
 223
 224 int CpuCas01::getPState()
 225 {
 226   return m_pstate;
 227 }
 228
 229 bool CpuCas01::isUsed()
 230 {
 231   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 232 }
 233
 234 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
 235 {
 236   lmm_variable_t var = NULL;
 237   lmm_element_t elem = NULL;
 238
 239   if (event_type == p_powerEvent) {
 240         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 241         xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
 242
 243     m_powerScale = value;
 244     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
 245                                 m_core * m_powerScale *
 246                                 m_powerPeak);
 247 #ifdef HAVE_TRACING
 248     TRACE_surf_host_set_power(date, getName(),
 249                               m_core * m_powerScale *
 250                               m_powerPeak);
 251 #endif
 252     while ((var = lmm_get_var_from_cnst
 253             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
 254       CpuCas01ActionPtr action = static_cast<CpuCas01ActionPtr>(static_cast<ActionPtr>(lmm_variable_id(var)));
 255
 256       lmm_update_variable_bound(getModel()->getMaxminSystem(),
 257                                 action->getVariable(),
 258                                 m_powerScale * m_powerPeak);
 259     }
 260     if (tmgr_trace_event_free(event_type))
 261       p_powerEvent = NULL;
 262   } else if (event_type == p_stateEvent) {
 263         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 264     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
 265
 266     if (value > 0) {
 267       if(getState() == SURF_RESOURCE_OFF)
 268         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
 269       setState(SURF_RESOURCE_ON);
 270     } else {
 271       lmm_constraint_t cnst = getConstraint();
 272
 273       setState(SURF_RESOURCE_OFF);
 274
 275       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
 276         ActionPtr action = static_cast<ActionPtr>(lmm_variable_id(var));
 277
 278         if (action->getState() == SURF_ACTION_RUNNING ||
 279             action->getState() == SURF_ACTION_READY ||
 280             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
 281           action->setFinishTime(date);
 282           action->setState(SURF_ACTION_FAILED);
 283         }
 284       }
 285     }
 286     if (tmgr_trace_event_free(event_type))
 287       p_stateEvent = NULL;
 288   } else {
 289     XBT_CRITICAL("Unknown event ! \n");
 290     xbt_abort();
 291   }
 292
 293   return;
 294 }
 295
 296 CpuActionPtr CpuCas01::execute(double size)
 297 {
 298
 299   XBT_IN("(%s,%g)", getName(), size);
 300   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), size, getState() != SURF_RESOURCE_ON,
 301                                                               m_powerScale * m_powerPeak, getConstraint());
 302
 303   XBT_OUT();
 304   return action;
 305 }
 306
 307 CpuActionPtr CpuCas01::sleep(double duration)
 308 {
 309   if (duration > 0)
 310     duration = MAX(duration, sg_surf_precision);
 311
 312   XBT_IN("(%s,%g)", getName(), duration);
 313   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), 1.0, getState() != SURF_RESOURCE_ON,
 314                                                       m_powerScale * m_powerPeak, getConstraint());
 315
 316
 317   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 318   action->m_maxDuration = duration;
 319   action->m_suspended = 2;
 320   if (duration == NO_MAX_DURATION) {
 321     /* Move to the *end* of the corresponding action set. This convention
 322        is used to speed up update_resource_state  */
 323         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
 324     action->p_stateSet = static_cast<CpuCas01ModelPtr>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 325     action->getStateSet()->push_back(*action);
 326   }
 327
 328   lmm_update_variable_weight(getModel()->getMaxminSystem(),
 329                              action->getVariable(), 0.0);
 330   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
 331     action->heapRemove(getModel()->getActionHeap());
 332     // this is necessary for a variable with weight 0 since such
 333     // variables are ignored in lmm and we need to set its max_duration
 334     // correctly at the next call to share_resources
 335     getModel()->getModifiedSet()->push_front(*action);
 336   }
 337
 338   XBT_OUT();
 339   return action;
 340 }
 341
 342 double CpuCas01::getCurrentPowerPeak()
 343 {
 344   return m_powerPeak;
 345 }
 346
 347 double CpuCas01::getPowerPeakAt(int pstate_index)
 348 {
 349   xbt_dynar_t plist = p_powerPeakList;
 350   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 351
 352   return xbt_dynar_get_as(plist, pstate_index, double);
 353 }
 354
 355 int CpuCas01::getNbPstates()
 356 {
 357   return xbt_dynar_length(p_powerPeakList);
 358 }
 359
 360 void CpuCas01::setPowerPeakAt(int pstate_index)
 361 {
 362   xbt_dynar_t plist = p_powerPeakList;
 363   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 364
 365   double new_power_peak = xbt_dynar_get_as(plist, pstate_index, double);
 366   m_pstate = pstate_index;
 367   m_powerPeak = new_power_peak;
 368 }
 369
 370 /**********
 371  * Action *
 372  **********/
 373
 374 CpuCas01Action::CpuCas01Action(ModelPtr model, double cost, bool failed, double power, lmm_constraint_t constraint)
 375  : CpuAction(model, cost, failed,
 376                      lmm_variable_new(model->getMaxminSystem(), static_cast<ActionPtr>(this),
 377                      1.0, power, 1))
 378 {
 379   m_suspended = 0;
 380   if (model->getUpdateMechanism() == UM_LAZY) {
 381     m_indexHeap = -1;
 382     m_lastUpdate = surf_get_clock();
 383     m_lastValue = 0.0;
 384   }
 385   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
 386 }