src/surf/cpu.cpp

   1 #include "cpu.hpp"
   2
   3 extern "C" {
   4 XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
   5 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu, surf,
   6                                 "Logging specific to the SURF cpu module");
   7 }
   8
   9 CpuModelPtr surf_cpu_model;
  10
  11 /*********
  12  * Model *
  13  *********/
  14
  15 void CpuModel::updateActionsStateLazy(double now, double delta)
  16 {
  17   void *_action;
  18   CpuActionLmmPtr action;
  19   while ((xbt_heap_size(p_actionHeap) > 0)
  20          && (double_equals(xbt_heap_maxkey(p_actionHeap), now))) {
  21     action = dynamic_cast<CpuActionLmmPtr>(static_cast<ActionLmmPtr>(xbt_heap_pop(p_actionHeap)));
  22     XBT_CDEBUG(surf_kernel, "Something happened to action %p", action);
  23 #ifdef HAVE_TRACING
  24     if (TRACE_is_enabled()) {
  25       CpuPtr cpu = (CpuPtr) lmm_constraint_id(lmm_get_cnst_from_var(p_maxminSystem, action->p_variable, 0));
  26       TRACE_surf_host_set_utilization(cpu->m_name, action->p_category,
  27                                       lmm_variable_getvalue(action->p_variable),
  28                                       action->m_lastUpdate,
  29                                       now - action->m_lastUpdate);
  30     }
  31 #endif
  32
  33     action->m_finish = surf_get_clock();
  34     XBT_CDEBUG(surf_kernel, "Action %p finished", action);
  35
  36     action->updateEnergy();
  37
  38     /* set the remains to 0 due to precision problems when updating the remaining amount */
  39     action->m_remains = 0;
  40     action->setState(SURF_ACTION_DONE);
  41     action->heapRemove(p_actionHeap); //FIXME: strange call since action was already popped
  42   }
  43 #ifdef HAVE_TRACING
  44   if (TRACE_is_enabled()) {
  45     //defining the last timestamp that we can safely dump to trace file
  46     //without losing the event ascending order (considering all CPU's)
  47     double smaller = -1;
  48     xbt_swag_foreach(_action, p_runningActionSet) {
  49       action = dynamic_cast<CpuActionLmmPtr>(static_cast<ActionPtr>(_action));
  50         if (smaller < 0) {
  51           smaller = action->m_lastUpdate;
  52           continue;
  53         }
  54         if (action->m_lastUpdate < smaller) {
  55           smaller = action->m_lastUpdate;
  56         }
  57     }
  58     if (smaller > 0) {
  59       TRACE_last_timestamp_to_dump = smaller;
  60     }
  61   }
  62 #endif
  63   return;
  64 }
  65
  66 void CpuModel::updateActionsStateFull(double now, double delta)
  67 {
  68   void *_action, *_next_action;
  69   CpuActionLmmPtr action = NULL;
  70   xbt_swag_t running_actions = p_runningActionSet;
  71
  72   xbt_swag_foreach_safe(_action, _next_action, running_actions) {
  73     action = dynamic_cast<CpuActionLmmPtr>(static_cast<ActionPtr>(_action));
  74 #ifdef HAVE_TRACING
  75     if (TRACE_is_enabled()) {
  76       CpuPtr x = (CpuPtr) lmm_constraint_id(lmm_get_cnst_from_var
  77                               (p_maxminSystem, action->p_variable, 0));
  78
  79       TRACE_surf_host_set_utilization(x->m_name,
  80                                       action->p_category,
  81                                       lmm_variable_getvalue(action->p_variable),
  82                                       now - delta,
  83                                       delta);
  84       TRACE_last_timestamp_to_dump = now - delta;
  85     }
  86 #endif
  87
  88     double_update(&(action->m_remains),
  89                   lmm_variable_getvalue(action->p_variable) * delta);
  90
  91
  92     if (action->m_maxDuration != NO_MAX_DURATION)
  93       double_update(&(action->m_maxDuration), delta);
  94
  95
  96     if ((action->m_remains <= 0) &&
  97         (lmm_get_variable_weight(action->p_variable) > 0)) {
  98       action->m_finish = surf_get_clock();
  99       action->setState(SURF_ACTION_DONE);
 100
 101     } else if ((action->m_maxDuration != NO_MAX_DURATION) &&
 102                (action->m_maxDuration <= 0)) {
 103       action->m_finish = surf_get_clock();
 104       action->setState(SURF_ACTION_DONE);
 105     }
 106     action->updateEnergy();
 107   }
 108
 109   return;
 110 }
 111
 112 /************
 113  * Resource *
 114  ************/
 115
 116 double Cpu::getSpeed(double load)
 117 {
 118   return load * m_powerPeak;
 119 }
 120
 121 double Cpu::getAvailableSpeed()
 122 {
 123 /* number between 0 and 1 */
 124   return m_powerScale;
 125 }
 126
 127 int Cpu::getCore()
 128 {
 129   return m_core;
 130 }
 131
 132 /**********
 133  * Action *
 134  **********/
 135
 136 void CpuActionLmm::updateRemainingLazy(double now)
 137 {
 138   double delta = 0.0;
 139
 140   xbt_assert(p_stateSet == p_model->p_runningActionSet,
 141       "You're updating an action that is not running.");
 142
 143   /* bogus priority, skip it */
 144   xbt_assert(m_priority > 0,
 145       "You're updating an action that seems suspended.");
 146
 147   delta = now - m_lastUpdate;
 148
 149   if (m_remains > 0) {
 150     XBT_CDEBUG(surf_kernel, "Updating action(%p): remains was %lf, last_update was: %lf", this, m_remains, m_lastUpdate);
 151     double_update(&(m_remains), m_lastValue * delta);
 152
 153 #ifdef HAVE_TRACING
 154     if (TRACE_is_enabled()) {
 155       CpuPtr cpu = (CpuPtr) lmm_constraint_id(lmm_get_cnst_from_var(p_model->p_maxminSystem, p_variable, 0));
 156       TRACE_surf_host_set_utilization(cpu->m_name, p_category, m_lastValue, m_lastUpdate, now - m_lastUpdate);
 157     }
 158 #endif
 159     XBT_CDEBUG(surf_kernel, "Updating action(%p): remains is now %lf", this, m_remains);
 160   }
 161
 162   m_lastUpdate = now;
 163   m_lastValue = lmm_variable_getvalue(p_variable);
 164 }