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  * Model *
  23  *********/
  24 void surf_cpu_model_init_Cas01()
  25 {
  26   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  27
  28   if (surf_cpu_model)
  29     return;
  30
  31   if (!strcmp(optim, "TI")) {
  32     surf_cpu_model = new CpuTiModel();
  33     return;
  34   }
  35
  36   surf_cpu_model = new CpuCas01Model();
  37   xbt_dynar_push(model_list, &surf_cpu_model);
  38 }
  39
  40 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
  41 {
  42   CpuCas01ActionLmm action;
  43
  44   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  45   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
  46
  47   if (!strcmp(optim, "Full")) {
  48     p_updateMechanism = UM_FULL;
  49     m_selectiveUpdate = select;
  50   } else if (!strcmp(optim, "Lazy")) {
  51     p_updateMechanism = UM_LAZY;
  52     m_selectiveUpdate = 1;
  53     xbt_assert((select == 1)
  54                ||
  55                (xbt_cfg_is_default_value
  56                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
  57                "Disabling selective update while using the lazy update mechanism is dumb!");
  58   } else {
  59     xbt_die("Unsupported optimization (%s) for this model", optim);
  60   }
  61
  62   cpu_running_action_set_that_does_not_need_being_checked =
  63       xbt_swag_new(xbt_swag_offset(action, p_stateHookup));
  64
  65   if (p_updateMechanism == UM_LAZY) {
  66         shareResources = &CpuCas01Model::shareResourcesLazy;
  67         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
  68
  69   } else if (p_updateMechanism == UM_FULL) {
  70         shareResources = &CpuCas01Model::shareResourcesFull;
  71         updateActionsState = &CpuCas01Model::updateActionsStateFull;
  72   } else
  73     xbt_die("Invalid cpu update mechanism!");
  74
  75   if (!p_maxminSystem) {
  76     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
  77   }
  78
  79   if (p_updateMechanism == UM_LAZY) {
  80     p_actionHeap = xbt_heap_new(8, NULL);
  81     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
  82     p_modifiedSet = xbt_swag_new(xbt_swag_offset(action, p_actionListHookup));
  83     //TOREPAIR: cpu_model->model_private->maxmin_system->m_keepTrack = cpu_model->model_private->modified_set;
  84   }
  85   /* Define callbacks */
  86   //TODO sg_platf_host_add_cb(parse_cpu_init);
  87   //TODO sg_platf_postparse_add_cb(cpu_add_traces_cpu);
  88 }
  89
  90 CpuCas01Model::~CpuCas01Model()
  91 {
  92   lmm_system_free(p_maxminSystem);
  93   p_maxminSystem = NULL;
  94
  95   if (p_actionHeap)
  96     xbt_heap_free(p_actionHeap);
  97   xbt_swag_free(p_modifiedSet);
  98
  99   surf_cpu_model = NULL;
 100
 101   xbt_swag_free(cpu_running_action_set_that_does_not_need_being_checked);
 102   cpu_running_action_set_that_does_not_need_being_checked = NULL;
 103 }
 104
 105 void CpuCas01Model::parseInit(sg_platf_host_cbarg_t host)
 106 {
 107   createResource(host->id,
 108         host->power_peak,
 109         host->power_scale,
 110         host->power_trace,
 111         host->core_amount,
 112         host->initial_state,
 113         host->state_trace,
 114         host->properties);
 115 }
 116 CpuCas01LmmPtr CpuCas01Model::createResource(const char *name, double power_peak, double power_scale,
 117                           tmgr_trace_t power_trace, int core,
 118                           e_surf_resource_state_t state_initial,
 119                           tmgr_trace_t state_trace,
 120                           xbt_dict_t cpu_properties)
 121 {
 122   CpuCas01LmmPtr cpu = NULL;
 123
 124   xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
 125              "Host '%s' declared several times in the platform file",
 126              name);
 127   xbt_assert(power_peak > 0, "Power has to be >0");
 128   xbt_assert(core > 0, "Invalid number of cores %d", core);
 129
 130   cpu = new CpuCas01Lmm(this, name, power_peak, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
 131
 132   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, this);
 133
 134   return (CpuCas01LmmPtr) xbt_lib_get_elm_or_null(host_lib, name);;
 135 }
 136
 137 double CpuCas01Model::shareResourcesFull(double now)
 138 {
 139   CpuCas01ActionLmm action;
 140   Model::shareResourcesMaxMin(p_runningActionSet,
 141                              xbt_swag_offset(action, p_variable),
 142                              p_maxminSystem, lmm_solve);
 143   return 0;
 144 }
 145
 146 void CpuCas01Model::addTraces()
 147 {
 148   xbt_dict_cursor_t cursor = NULL;
 149   char *trace_name, *elm;
 150   static int called = 0;
 151   if (called)
 152     return;
 153   called = 1;
 154
 155   /* connect all traces relative to hosts */
 156   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 157     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 158     CpuCas01LmmPtr host = (CpuCas01LmmPtr) surf_cpu_resource_by_name(elm);
 159
 160     xbt_assert(host, "Host %s undefined", elm);
 161     xbt_assert(trace, "Trace %s undefined", trace_name);
 162
 163     host->p_stateEvent =
 164         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 165   }
 166
 167   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 168     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 169     CpuCas01LmmPtr host = (CpuCas01LmmPtr) surf_cpu_resource_by_name(elm);
 170
 171     xbt_assert(host, "Host %s undefined", elm);
 172     xbt_assert(trace, "Trace %s undefined", trace_name);
 173
 174     host->p_powerEvent =
 175         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 176   }
 177 }
 178
 179 /************
 180  * Resource *
 181  ************/
 182 CpuCas01Lmm::CpuCas01Lmm(CpuCas01ModelPtr model, const char *name, double powerPeak,
 183         double powerScale, tmgr_trace_t powerTrace, int core,
 184         e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
 185         xbt_dict_t properties) :
 186         CpuLmm(model, name, properties) {
 187   m_powerPeak = powerPeak;
 188   m_powerScale = powerScale;
 189   m_core = core;
 190   p_stateCurrent = stateInitial;
 191   if (powerTrace)
 192     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, this);
 193
 194   if (stateTrace)
 195     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, this);
 196
 197   p_constraint = lmm_constraint_new(p_model->p_maxminSystem, this, m_core * m_powerScale * m_powerPeak);
 198 }
 199
 200 bool CpuCas01Lmm::isUsed()
 201 {
 202   return lmm_constraint_used(p_model->p_maxminSystem, p_constraint);
 203 }
 204
 205 void CpuCas01Lmm::updateState(tmgr_trace_event_t event_type, double value, double date)
 206 {
 207   lmm_variable_t var = NULL;
 208   lmm_element_t elem = NULL;
 209
 210   surf_watched_hosts();
 211
 212   if (event_type == p_powerEvent) {
 213     m_powerScale = value;
 214     lmm_update_constraint_bound(surf_cpu_model->p_maxminSystem, p_constraint,
 215                                 m_core * m_powerScale *
 216                                 m_powerPeak);
 217 #ifdef HAVE_TRACING
 218     TRACE_surf_host_set_power(date, m_name,
 219                               m_core * m_powerScale *
 220                               m_powerPeak);
 221 #endif
 222     while ((var = lmm_get_var_from_cnst
 223             (surf_cpu_model->p_maxminSystem, p_constraint, &elem))) {
 224       CpuCas01ActionLmmPtr action = (CpuCas01ActionLmmPtr) lmm_variable_id(var);
 225       lmm_update_variable_bound(surf_cpu_model->p_maxminSystem,
 226                                 action->p_variable,
 227                                 m_powerScale * m_powerPeak);
 228     }
 229     if (tmgr_trace_event_free(event_type))
 230       p_powerEvent = NULL;
 231   } else if (event_type == p_stateEvent) {
 232     if (value > 0)
 233       p_stateCurrent = SURF_RESOURCE_ON;
 234     else {
 235       lmm_constraint_t cnst = p_constraint;
 236
 237       p_stateCurrent = SURF_RESOURCE_OFF;
 238
 239       while ((var = lmm_get_var_from_cnst(surf_cpu_model->p_maxminSystem, cnst, &elem))) {
 240         ActionPtr action = (ActionPtr) lmm_variable_id(var);
 241
 242         if (action->getState() == SURF_ACTION_RUNNING ||
 243             action->getState() == SURF_ACTION_READY ||
 244             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
 245           action->m_finish = date;
 246           action->setState(SURF_ACTION_FAILED);
 247         }
 248       }
 249     }
 250     if (tmgr_trace_event_free(event_type))
 251       p_stateEvent = NULL;
 252   } else {
 253     XBT_CRITICAL("Unknown event ! \n");
 254     xbt_abort();
 255   }
 256
 257   return;
 258 }
 259
 260 CpuActionPtr CpuCas01Lmm::execute(double size)
 261 {
 262
 263   XBT_IN("(%s,%g)", m_name, size);
 264   CpuCas01ActionLmmPtr action = new CpuCas01ActionLmm(surf_cpu_model, size, p_stateCurrent != SURF_RESOURCE_ON);
 265
 266   action->m_suspended = 0;     /* Should be useless because of the
 267                                                    calloc but it seems to help valgrind... */
 268
 269   action->p_variable =
 270       lmm_variable_new(surf_cpu_model->p_maxminSystem, action,
 271                        action->m_priority,
 272                        m_powerScale * m_powerPeak, 1);
 273   if (surf_cpu_model->p_updateMechanism == UM_LAZY) {
 274     action->m_indexHeap = -1;
 275     action->m_lastUpdate = surf_get_clock();
 276     action->m_lastValue = 0.0;
 277   }
 278   lmm_expand(surf_cpu_model->p_maxminSystem, p_constraint,
 279              action->p_variable, 1.0);
 280   XBT_OUT();
 281   return action;
 282 }
 283
 284 CpuActionPtr CpuCas01Lmm::sleep(double duration)
 285 {
 286   if (duration > 0)
 287     duration = MAX(duration, MAXMIN_PRECISION);
 288
 289   XBT_IN("(%s,%g)", m_name, duration);
 290   CpuCas01ActionLmmPtr action = (CpuCas01ActionLmmPtr) execute(1.0);
 291
 292   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 293   action->m_maxDuration = duration;
 294   action->m_suspended = 2;
 295   if (duration == NO_MAX_DURATION) {
 296     /* Move to the *end* of the corresponding action set. This convention
 297        is used to speed up update_resource_state  */
 298     xbt_swag_remove(action, action->p_stateSet);
 299     action->p_stateSet = cpu_running_action_set_that_does_not_need_being_checked;
 300     xbt_swag_insert(action, action->p_stateSet);
 301   }
 302
 303   lmm_update_variable_weight(surf_cpu_model->p_maxminSystem,
 304                              action->p_variable, 0.0);
 305   if (surf_cpu_model->p_updateMechanism == UM_LAZY) {     // remove action from the heap
 306     action->heapRemove(surf_cpu_model->p_actionHeap);
 307     // this is necessary for a variable with weight 0 since such
 308     // variables are ignored in lmm and we need to set its max_duration
 309     // correctly at the next call to share_resources
 310     xbt_swag_insert_at_head(action, surf_cpu_model->p_modifiedSet);
 311   }
 312
 313   XBT_OUT();
 314   return action;
 315 }
 316
 317
 318 /**********
 319  * Action *
 320  **********/
 321
 322