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