and then use the following function to retrieve the consumption of a given host: #MSG_host_get_consumed_energy().
*/
-XBT_LOG_EXTERNAL_CATEGORY(surf_kernel);
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_energy, surf,
"Logging specific to the SURF energy plugin");
(*surf_energy)[cpu] = new CpuEnergy(cpu);
}
-static void update_consumption_running(Cpu *cpu, CpuEnergy *cpu_energy) {
+
+/* Computes the consumption so far. Called lazily on need. */
+static void update_consumption(Cpu *cpu, CpuEnergy *cpu_energy) {
double cpu_load = lmm_constraint_get_usage(cpu->getConstraint()) / cpu->m_powerPeak;
double start_time = cpu_energy->last_updated;
double finish_time = surf_get_clock();
double previous_energy = cpu_energy->total_energy;
- double energy_this_step = cpu_energy->getCurrentWattsValue(cpu_load)*(finish_time-start_time);
-
- cpu_energy->total_energy = previous_energy + energy_this_step;
- cpu_energy->last_updated = finish_time;
- XBT_DEBUG("[cpu_update_energy] period=[%.2f-%.2f]; current power peak=%.0E flop/s; consumption change: %.2f J -> %.2f J",
- start_time, finish_time, cpu->m_powerPeak, previous_energy, energy_this_step);
-}
-static void update_consumption_off(Cpu *cpu, CpuEnergy *cpu_energy) {
- double start_time = cpu_energy->last_updated;
- double finish_time = surf_get_clock();
+ double instantaneous_consumption;
+ if (cpu->getState() == SURF_RESOURCE_OFF)
+ instantaneous_consumption = cpu_energy->watts_off;
+ else
+ instantaneous_consumption = cpu_energy->getCurrentWattsValue(cpu_load);
- double previous_energy = cpu_energy->total_energy;
- double energy_this_step = cpu_energy->watts_off*(finish_time-start_time);
+ double energy_this_step = instantaneous_consumption*(finish_time-start_time);
cpu_energy->total_energy = previous_energy + energy_this_step;
cpu_energy->last_updated = finish_time;
- XBT_DEBUG("[cpu_update_energy] off period=[%.2f-%.2f]; consumption change: %.2f J -> %.2f J",
- start_time, finish_time, previous_energy, energy_this_step);
+ XBT_DEBUG("[cpu_update_energy] period=[%.2f-%.2f]; current power peak=%.0E flop/s; consumption change: %.2f J -> %.2f J",
+ start_time, finish_time, cpu->m_powerPeak, previous_energy, energy_this_step);
}
static void energyCpuDestructedCallback(Cpu *cpu){
xbt_assert(cpu_energy_it != surf_energy->end(), "The cpu is not in surf_energy.");
CpuEnergy *cpu_energy = cpu_energy_it->second;
- if (cpu->getState() == SURF_RESOURCE_OFF)
- update_consumption_off(cpu, cpu_energy);
- else
- update_consumption_running(cpu, cpu_energy);
-
- XBT_INFO("Total energy of host %s: %f Joules", cpu->getName(), cpu_energy->getConsumedEnergy());
- delete cpu_energy_it->second;
- surf_energy->erase(cpu_energy_it);
+ update_consumption(cpu, cpu_energy);
+
+ // Do nothing if that's a virtual CPU, only act for physical CPUs
+ if(cpu->getPhysicalCPU() == NULL){
+ XBT_INFO("Total energy of host %s: %f Joules", cpu->getName(), cpu_energy->getConsumedEnergy());
+ delete cpu_energy_it->second;
+ surf_energy->erase(cpu_energy_it);
+ }
+
}
static void energyCpuActionStateChangedCallback(CpuAction *action, e_surf_action_state_t old, e_surf_action_state_t cur){
Cpu *cpu = getActionCpu(action);
+
CpuEnergy *cpu_energy = (*surf_energy)[cpu];
- if(cpu_energy->last_updated < surf_get_clock()) {
- update_consumption_running(cpu, cpu_energy);
- }
+ if(cpu_energy->last_updated < surf_get_clock())
+ update_consumption(cpu, cpu_energy);
}
static void energyStateChangedCallback(Cpu *cpu, e_surf_resource_state_t oldState, e_surf_resource_state_t newState){
CpuEnergy *cpu_energy = (*surf_energy)[cpu];
- if(cpu_energy->last_updated < surf_get_clock()) {
- if (oldState == SURF_RESOURCE_OFF)
- update_consumption_off(cpu, cpu_energy);
- else
- update_consumption_running(cpu, cpu_energy);
- }
+ if(cpu_energy->last_updated < surf_get_clock())
+ update_consumption(cpu, cpu_energy);
}
static void sg_energy_plugin_exit()
*
*/
CpuEnergy::CpuEnergy(Cpu *ptr)
- : cpu(ptr)
{
+ cpu = ptr;
total_energy = 0;
power_range_watts_list = getWattsRangeList();
last_updated = surf_get_clock();
double CpuEnergy::getConsumedEnergy()
{
- if(last_updated < surf_get_clock()) {
- if (cpu->getState() == SURF_RESOURCE_OFF)
- update_consumption_off(cpu, this);
- else
- update_consumption_running(cpu, this);
- }
- return total_energy;
+
+ if(last_updated < surf_get_clock())
+ update_consumption(cpu, this);
+ return total_energy;
+
}
xbt_dynar_t CpuEnergy::getWattsRangeList()