src/surf/cpu.cpp

   1 #include "cpu.hpp"
   2
   3 extern "C" {
   4 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu, surf,
   5                                 "Logging specific to the SURF cpu module");
   6 }
   7
   8 CpuModelPtr surf_cpu_model;
   9
  10 /*********
  11  * Model *
  12  *********/
  13
  14 void CpuModel::updateActionsStateLazy(double now, double delta)
  15 {
  16   void *_action;
  17   ActionLmmPtr action;
  18   while ((xbt_heap_size(p_actionHeap) > 0)
  19          && (double_equals(xbt_heap_maxkey(p_actionHeap), now))) {
  20     action = (ActionLmmPtr) xbt_heap_pop(p_actionHeap);
  21     XBT_DEBUG("Something happened to action %p", action);
  22 #ifdef HAVE_TRACING
  23     if (TRACE_is_enabled()) {
  24       CpuPtr cpu = (CpuPtr) lmm_constraint_id(lmm_get_cnst_from_var(p_maxminSystem, action->p_variable, 0));
  25       TRACE_surf_host_set_utilization(cpu->m_name, action->p_category,
  26                                       lmm_variable_getvalue(action->p_variable),
  27                                       action->m_lastUpdate,
  28                                       now - action->m_lastUpdate);
  29     }
  30 #endif
  31
  32     action->m_finish = surf_get_clock();
  33     XBT_DEBUG("Action %p finished", action);
  34
  35     /* set the remains to 0 due to precision problems when updating the remaining amount */
  36     action->m_remains = 0;
  37     action->setState(SURF_ACTION_DONE);
  38     action->heapRemove(p_actionHeap); //FIXME: strange call since action was already popped
  39   }
  40 #ifdef HAVE_TRACING
  41   if (TRACE_is_enabled()) {
  42     //defining the last timestamp that we can safely dump to trace file
  43     //without losing the event ascending order (considering all CPU's)
  44     double smaller = -1;
  45     xbt_swag_foreach(_action, p_runningActionSet) {
  46       action = dynamic_cast<ActionLmmPtr>(static_cast<ActionPtr>(_action));
  47         if (smaller < 0) {
  48           smaller = action->m_lastUpdate;
  49           continue;
  50         }
  51         if (action->m_lastUpdate < smaller) {
  52           smaller = action->m_lastUpdate;
  53         }
  54     }
  55     if (smaller > 0) {
  56       TRACE_last_timestamp_to_dump = smaller;
  57     }
  58   }
  59 #endif
  60   return;
  61 }
  62
  63 void CpuModel::updateActionsStateFull(double now, double delta)
  64 {
  65   void *_action, *_next_action;
  66   ActionLmmPtr action = NULL;
  67   ActionLmmPtr next_action = NULL;
  68   xbt_swag_t running_actions = p_runningActionSet;
  69
  70   xbt_swag_foreach_safe(_action, _next_action, running_actions) {
  71     action = dynamic_cast<ActionLmmPtr>(static_cast<ActionPtr>(_action));
  72 #ifdef HAVE_TRACING
  73     if (TRACE_is_enabled()) {
  74       CpuPtr x = (CpuPtr) lmm_constraint_id(lmm_get_cnst_from_var
  75                               (p_maxminSystem, action->p_variable, 0));
  76
  77       TRACE_surf_host_set_utilization(x->m_name,
  78                                       action->p_category,
  79                                       lmm_variable_getvalue(action->p_variable),
  80                                       now - delta,
  81                                       delta);
  82       TRACE_last_timestamp_to_dump = now - delta;
  83     }
  84 #endif
  85
  86     double_update(&(action->m_remains),
  87                   lmm_variable_getvalue(action->p_variable) * delta);
  88
  89
  90     if (action->m_maxDuration != NO_MAX_DURATION)
  91       double_update(&(action->m_maxDuration), delta);
  92
  93
  94     if ((action->m_remains <= 0) &&
  95         (lmm_get_variable_weight(action->p_variable) > 0)) {
  96       action->m_finish = surf_get_clock();
  97       action->setState(SURF_ACTION_DONE);
  98
  99     } else if ((action->m_maxDuration != NO_MAX_DURATION) &&
 100                (action->m_maxDuration <= 0)) {
 101       action->m_finish = surf_get_clock();
 102       action->setState(SURF_ACTION_DONE);
 103     }
 104   }
 105
 106   return;
 107 }
 108
 109 /************
 110  * Resource *
 111  ************/
 112
 113 double Cpu::getSpeed(double load)
 114 {
 115   return load * m_powerPeak;
 116 }
 117
 118 double Cpu::getAvailableSpeed()
 119 {
 120 /* number between 0 and 1 */
 121   return m_powerScale;
 122 }
 123
 124 int Cpu::getCore()
 125 {
 126   return m_core;
 127 }
 128
 129 /**********
 130  * Action *
 131  **********/
 132
 133 void CpuActionLmm::updateRemainingLazy(double now)
 134 {
 135   double delta = 0.0;
 136
 137   xbt_assert(p_stateSet == p_model->p_runningActionSet,
 138       "You're updating an action that is not running.");
 139
 140   /* bogus priority, skip it */
 141   xbt_assert(m_priority > 0,
 142       "You're updating an action that seems suspended.");
 143
 144   delta = now - m_lastUpdate;
 145
 146   if (m_remains > 0) {
 147     XBT_DEBUG("Updating action(%p): remains was %lf, last_update was: %lf", this, m_remains, m_lastUpdate);
 148     double_update(&(m_remains), m_lastValue * delta);
 149
 150 #ifdef HAVE_TRACING
 151     if (TRACE_is_enabled()) {
 152       CpuPtr cpu = (CpuPtr) lmm_constraint_id(lmm_get_cnst_from_var(p_model->p_maxminSystem, p_variable, 0));
 153       TRACE_surf_host_set_utilization(cpu->m_name, p_category, m_lastValue, m_lastUpdate, now - m_lastUpdate);
 154     }
 155 #endif
 156     XBT_DEBUG("Updating action(%p): remains is now %lf", this, m_remains);
 157   }
 158
 159   m_lastUpdate = now;
 160   m_lastValue = lmm_variable_getvalue(p_variable);
 161 }