src/surf/cpu_cas01.cpp

   1 /* Copyright (c) 2009-2011. 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 "surf.hpp"
  10 #include "maxmin_private.h"
  11 #include "simgrid/sg_config.h"
  12
  13 extern "C" {
  14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf,
  15                                 "Logging specific to the SURF CPU IMPROVED module");
  16 }
  17
  18 static xbt_swag_t
  19     cpu_running_action_set_that_does_not_need_being_checked = NULL;
  20
  21 /*************
  22  * CallBacks *
  23  *************/
  24
  25 static void parse_cpu_init(sg_platf_host_cbarg_t host){
  26   ((CpuCas01ModelPtr)surf_cpu_model)->parseInit(host);
  27 }
  28
  29 static void cpu_add_traces_cpu(){
  30   surf_cpu_model->addTraces();
  31 }
  32
  33 static void cpu_define_callbacks()
  34 {
  35   sg_platf_host_add_cb(parse_cpu_init);
  36   sg_platf_postparse_add_cb(cpu_add_traces_cpu);
  37 }
  38
  39 /*********
  40  * Model *
  41  *********/
  42 void surf_cpu_model_init_Cas01()
  43 {
  44   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  45
  46   if (surf_cpu_model)
  47     return;
  48
  49   if (!strcmp(optim, "TI")) {
  50     surf_cpu_model = new CpuTiModel();
  51     return;
  52   }
  53
  54   surf_cpu_model = new CpuCas01Model();
  55   cpu_define_callbacks();
  56   ModelPtr model = static_cast<ModelPtr>(surf_cpu_model);
  57   xbt_dynar_push(model_list, &model);
  58 }
  59
  60 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
  61 {
  62   CpuCas01ActionLmm action;
  63
  64   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  65   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
  66
  67   if (!strcmp(optim, "Full")) {
  68     p_updateMechanism = UM_FULL;
  69     m_selectiveUpdate = select;
  70   } else if (!strcmp(optim, "Lazy")) {
  71     p_updateMechanism = UM_LAZY;
  72     m_selectiveUpdate = 1;
  73     xbt_assert((select == 1)
  74                ||
  75                (xbt_cfg_is_default_value
  76                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
  77                "Disabling selective update while using the lazy update mechanism is dumb!");
  78   } else {
  79     xbt_die("Unsupported optimization (%s) for this model", optim);
  80   }
  81
  82   cpu_running_action_set_that_does_not_need_being_checked =
  83       xbt_swag_new(xbt_swag_offset(action, p_stateHookup));
  84
  85   if (p_updateMechanism == UM_LAZY) {
  86         shareResources = &CpuCas01Model::shareResourcesLazy;
  87         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
  88
  89   } else if (p_updateMechanism == UM_FULL) {
  90         shareResources = &CpuCas01Model::shareResourcesFull;
  91         updateActionsState = &CpuCas01Model::updateActionsStateFull;
  92   } else
  93     xbt_die("Invalid cpu update mechanism!");
  94
  95   if (!p_maxminSystem) {
  96     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
  97   }
  98
  99   if (p_updateMechanism == UM_LAZY) {
 100     p_actionHeap = xbt_heap_new(8, NULL);
 101     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
 102     ActionLmmPtr _actionlmm;
 103     CpuCas01ActionLmmPtr _actioncpu;
 104     int j = xbt_swag_offset(*_actionlmm, p_actionListHookup);
 105     int k = xbt_swag_offset(*_actioncpu, p_actionListHookup);
 106     j = ((char *)&( (*_actionlmm).p_actionListHookup ) - (char *)(_actionlmm));
 107     k = ((char *)&( (*_actioncpu).p_actionListHookup ) - (char *)(_actioncpu));
 108     void *toto = &(*_actionlmm).p_actionListHookup;
 109     void *tata = _actionlmm;
 110     ActionLmm aieu;
 111     ActionLmmPtr actionBase = &aieu;
 112     void *actionBaseVoid = actionBase;
 113     void *actionBaseCVoid = static_cast<void*>(actionBase);
 114     ActionLmmPtr actionBaseVoidBase = (ActionLmmPtr)actionBaseVoid;
 115     ActionLmmPtr actionBaseCVoidCBase = static_cast<ActionLmmPtr>(actionBaseCVoid);
 116     p_modifiedSet = xbt_swag_new(xbt_swag_offset(*_actionlmm, p_actionListHookup));
 117     p_maxminSystem->keep_track = p_modifiedSet;
 118   }
 119 }
 120
 121 CpuCas01Model::~CpuCas01Model()
 122 {
 123   lmm_system_free(p_maxminSystem);
 124   p_maxminSystem = NULL;
 125
 126   if (p_actionHeap)
 127     xbt_heap_free(p_actionHeap);
 128   xbt_swag_free(p_modifiedSet);
 129
 130   surf_cpu_model = NULL;
 131
 132   xbt_swag_free(cpu_running_action_set_that_does_not_need_being_checked);
 133   cpu_running_action_set_that_does_not_need_being_checked = NULL;
 134 }
 135
 136 void CpuCas01Model::parseInit(sg_platf_host_cbarg_t host)
 137 {
 138   createResource(host->id,
 139         host->power_peak,
 140         host->power_scale,
 141         host->power_trace,
 142         host->core_amount,
 143         host->initial_state,
 144         host->state_trace,
 145         host->properties);
 146 }
 147 CpuCas01LmmPtr CpuCas01Model::createResource(const char *name, double power_peak, double power_scale,
 148                           tmgr_trace_t power_trace, int core,
 149                           e_surf_resource_state_t state_initial,
 150                           tmgr_trace_t state_trace,
 151                           xbt_dict_t cpu_properties)
 152 {
 153   CpuPtr cpu = NULL;
 154   xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
 155              "Host '%s' declared several times in the platform file",
 156              name);
 157   xbt_assert(power_peak > 0, "Power has to be >0");
 158   xbt_assert(core > 0, "Invalid number of cores %d", core);
 159
 160   cpu = new CpuCas01Lmm(this, name, power_peak, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
 161   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
 162
 163   return (CpuCas01LmmPtr) xbt_lib_get_elm_or_null(host_lib, name);;
 164 }
 165
 166 double CpuCas01Model::shareResourcesFull(double now)
 167 {
 168   CpuCas01ActionLmm action;
 169   Model::shareResourcesMaxMin(p_runningActionSet,
 170                              xbt_swag_offset(action, p_variable),
 171                              p_maxminSystem, lmm_solve);
 172   return 0;
 173 }
 174
 175 void CpuCas01Model::addTraces()
 176 {
 177   xbt_dict_cursor_t cursor = NULL;
 178   char *trace_name, *elm;
 179   static int called = 0;
 180   if (called)
 181     return;
 182   called = 1;
 183
 184   /* connect all traces relative to hosts */
 185   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 186     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 187     CpuCas01LmmPtr host = (CpuCas01LmmPtr) surf_cpu_resource_priv(surf_cpu_resource_by_name(elm));
 188
 189     xbt_assert(host, "Host %s undefined", elm);
 190     xbt_assert(trace, "Trace %s undefined", trace_name);
 191
 192     host->p_stateEvent =
 193         tmgr_history_add_trace(history, trace, 0.0, 0, (ResourcePtr) host);
 194   }
 195
 196   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 197     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 198     CpuCas01LmmPtr host = (CpuCas01LmmPtr) surf_cpu_resource_priv(surf_cpu_resource_by_name(elm));
 199
 200     xbt_assert(host, "Host %s undefined", elm);
 201     xbt_assert(trace, "Trace %s undefined", trace_name);
 202
 203     host->p_powerEvent =
 204         tmgr_history_add_trace(history, trace, 0.0, 0, (ResourcePtr) host);
 205   }
 206 }
 207
 208 /************
 209  * Resource *
 210  ************/
 211 CpuCas01Lmm::CpuCas01Lmm(CpuCas01ModelPtr model, const char *name, double powerPeak,
 212         double powerScale, tmgr_trace_t powerTrace, int core,
 213         e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
 214         xbt_dict_t properties) :
 215         CpuLmm(model, name, properties), Resource(model, name, properties) {
 216   m_powerPeak = powerPeak;
 217   m_powerScale = powerScale;
 218   m_core = core;
 219   p_stateCurrent = stateInitial;
 220   if (powerTrace)
 221     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, static_cast<ResourcePtr>(this));
 222
 223   if (stateTrace)
 224     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, static_cast<ResourcePtr>(this));
 225
 226   p_constraint = lmm_constraint_new(p_model->p_maxminSystem, this, m_core * m_powerScale * m_powerPeak);
 227 }
 228
 229 bool CpuCas01Lmm::isUsed()
 230 {
 231   return lmm_constraint_used(p_model->p_maxminSystem, p_constraint);
 232 }
 233
 234 void CpuCas01Lmm::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   surf_watched_hosts();
 240
 241   if (event_type == p_powerEvent) {
 242     m_powerScale = value;
 243     lmm_update_constraint_bound(surf_cpu_model->p_maxminSystem, p_constraint,
 244                                 m_core * m_powerScale *
 245                                 m_powerPeak);
 246 #ifdef HAVE_TRACING
 247     TRACE_surf_host_set_power(date, m_name,
 248                               m_core * m_powerScale *
 249                               m_powerPeak);
 250 #endif
 251     while ((var = lmm_get_var_from_cnst
 252             (surf_cpu_model->p_maxminSystem, p_constraint, &elem))) {
 253       CpuCas01ActionLmmPtr action = static_cast<CpuCas01ActionLmmPtr>(static_cast<ActionLmmPtr>(lmm_variable_id(var)));
 254
 255       lmm_update_variable_bound(surf_cpu_model->p_maxminSystem,
 256                                 action->p_variable,
 257                                 m_powerScale * m_powerPeak);
 258     }
 259     if (tmgr_trace_event_free(event_type))
 260       p_powerEvent = NULL;
 261   } else if (event_type == p_stateEvent) {
 262     if (value > 0)
 263       p_stateCurrent = SURF_RESOURCE_ON;
 264     else {
 265       lmm_constraint_t cnst = p_constraint;
 266
 267       p_stateCurrent = SURF_RESOURCE_OFF;
 268
 269       while ((var = lmm_get_var_from_cnst(surf_cpu_model->p_maxminSystem, cnst, &elem))) {
 270         ActionLmmPtr action = static_cast<ActionLmmPtr>(lmm_variable_id(var));
 271
 272         if (action->getState() == SURF_ACTION_RUNNING ||
 273             action->getState() == SURF_ACTION_READY ||
 274             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
 275           action->m_finish = date;
 276           action->setState(SURF_ACTION_FAILED);
 277         }
 278       }
 279     }
 280     if (tmgr_trace_event_free(event_type))
 281       p_stateEvent = NULL;
 282   } else {
 283     XBT_CRITICAL("Unknown event ! \n");
 284     xbt_abort();
 285   }
 286
 287   return;
 288 }
 289
 290 CpuActionPtr CpuCas01Lmm::execute(double size)
 291 {
 292
 293   XBT_IN("(%s,%g)", m_name, size);
 294   CpuCas01ActionLmmPtr action = new CpuCas01ActionLmm(surf_cpu_model, size, p_stateCurrent != SURF_RESOURCE_ON);
 295
 296   action->m_suspended = 0;     /* Should be useless because of the
 297                                                    calloc but it seems to help valgrind... */
 298
 299   action->p_variable =
 300       lmm_variable_new(surf_cpu_model->p_maxminSystem, static_cast<ActionLmmPtr>(action),
 301                        action->m_priority,
 302                        m_powerScale * m_powerPeak, 1);
 303   if (surf_cpu_model->p_updateMechanism == UM_LAZY) {
 304     action->m_indexHeap = -1;
 305     action->m_lastUpdate = surf_get_clock();
 306     action->m_lastValue = 0.0;
 307   }
 308   lmm_expand(surf_cpu_model->p_maxminSystem, p_constraint,
 309              action->p_variable, 1.0);
 310   XBT_OUT();
 311   return action;
 312 }
 313
 314 CpuActionPtr CpuCas01Lmm::sleep(double duration)
 315 {
 316   if (duration > 0)
 317     duration = MAX(duration, MAXMIN_PRECISION);
 318
 319   XBT_IN("(%s,%g)", m_name, duration);
 320   CpuCas01ActionLmmPtr action = (CpuCas01ActionLmmPtr) execute(1.0);
 321
 322   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 323   action->m_maxDuration = duration;
 324   action->m_suspended = 2;
 325   if (duration == NO_MAX_DURATION) {
 326     /* Move to the *end* of the corresponding action set. This convention
 327        is used to speed up update_resource_state  */
 328     xbt_swag_remove(static_cast<ActionPtr>(action), action->p_stateSet);
 329     action->p_stateSet = cpu_running_action_set_that_does_not_need_being_checked;
 330     xbt_swag_insert(static_cast<ActionPtr>(action), action->p_stateSet);
 331   }
 332
 333   lmm_update_variable_weight(surf_cpu_model->p_maxminSystem,
 334                              action->p_variable, 0.0);
 335   if (surf_cpu_model->p_updateMechanism == UM_LAZY) {     // remove action from the heap
 336     action->heapRemove(surf_cpu_model->p_actionHeap);
 337     // this is necessary for a variable with weight 0 since such
 338     // variables are ignored in lmm and we need to set its max_duration
 339     // correctly at the next call to share_resources
 340     xbt_swag_insert_at_head(action, surf_cpu_model->p_modifiedSet);
 341   }
 342
 343   XBT_OUT();
 344   return action;
 345 }
 346
 347
 348 /**********
 349  * Action *
 350  **********/
 351
 352