#include "../cpu_cas01.hpp"
/** @addtogroup SURF_plugin_energy
- *
- *
- * This is the energy plugin, enabling to account not only for computation time, but also for the dissipated energy in the simulated platform.
+
+
+This is the energy plugin, enabling to account not only for computation time,
+but also for the dissipated energy in the simulated platform.
+
+The energy consumption of a CPU depends directly of its current load. Specify that consumption in your platform file as follows:
+
+\verbatim
+<host id="HostA" power="100.0Mf" >
+ <prop id="watt_per_state" value="100.0:200.0" />
+ <prop id="watt_off" value="10" />
+</host>
+\endverbatim
+
+The first property means that when your host is up and running, but without anything to do, it will dissipate 100 Watts.
+If it's fully loaded, it will dissipate 200 Watts. If its load is at 50%, then it will dissipate 150 Watts.
+The second property means that when your host is turned off, it will dissipate only 10 Watts (please note that these values are arbitrary).
+
+If your CPU is using pstates, then you can provide one consumption interval per pstate.
+
+\verbatim
+<host id="HostB" power="100.0Mf,50.0Mf,20.0Mf" pstate="0" >
+ <prop id="watt_per_state" value="95.0:200.0, 93.0:170.0, 90.0:150.0" />
+ <prop id="watt_off" value="10" />
+</host>
+\endverbatim
+
+That host has 3 levels of performance with the following performance: 100 Mflop/s, 50 Mflop/s or 20 Mflop/s.
+It starts at pstate 0 (ie, at 100 Mflop/s). In this case, you have to specify one interval per pstate in the watt_per_state property.
+In this example, the idle consumption is 95 Watts, 93 Watts and 90 Watts in each pstate while the CPU burn consumption are at 200 Watts,
+170 Watts and 150 Watts respectively.
+
+To change the pstate of a given CPU, use the following functions: #MSG_host_get_nb_pstates(), #MSG_host_set_pstate(), #MSG_host_get_power_peak_at().
+
+To simulate the energy-related elements, first call the #sg_energy_plugin_init() before your #MSG_init(),
+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");
-std::map<CpuPtr, CpuEnergyPtr> *surf_energy=NULL;
+std::map<Cpu*, CpuEnergy*> *surf_energy=NULL;
-static void energyCpuCreatedCallback(CpuPtr cpu){
+static void energyCpuCreatedCallback(Cpu *cpu){
(*surf_energy)[cpu] = new CpuEnergy(cpu);
}
-static void update_consumption_running(CpuPtr cpu, CpuEnergyPtr cpu_energy) {
+static void update_consumption_running(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();
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(CpuPtr cpu, CpuEnergyPtr cpu_energy) {
+static void update_consumption_off(Cpu *cpu, CpuEnergy *cpu_energy) {
double start_time = cpu_energy->last_updated;
double finish_time = surf_get_clock();
start_time, finish_time, previous_energy, energy_this_step);
}
-static void energyCpuDestructedCallback(CpuPtr cpu){
- std::map<CpuPtr, CpuEnergyPtr>::iterator cpu_energy_it = surf_energy->find(cpu);
+static void energyCpuDestructedCallback(Cpu *cpu){
+ std::map<Cpu*, CpuEnergy*>::iterator cpu_energy_it = surf_energy->find(cpu);
xbt_assert(cpu_energy_it != surf_energy->end(), "The cpu is not in surf_energy.");
- CpuEnergyPtr cpu_energy = cpu_energy_it->second;
+ 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);
+ // Adrien - October 2015, Changes related to VM energy extensions
+ // Only report/delete and erase if the cpu_energy is related to a physical one
+ if(cpu->isVirtual() == 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(CpuActionPtr action, e_surf_action_state_t old, e_surf_action_state_t cur){
- CpuPtr cpu = getActionCpu(action);
- CpuEnergyPtr cpu_energy = (*surf_energy)[cpu];
+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);
}
}
-static void energyStateChangedCallback(CpuPtr cpu, e_surf_resource_state_t oldState, e_surf_resource_state_t newState){
- CpuEnergyPtr cpu_energy = (*surf_energy)[cpu];
+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)
/** \ingroup SURF_plugin_energy
* \brief Enable energy plugin
- * \details Enable energy plugin to get joules consumption of each cpu.
+ * \details Enable energy plugin to get joules consumption of each cpu. You should call this function before #MSG_init().
*/
void sg_energy_plugin_init() {
if (surf_energy == NULL) {
- surf_energy = new std::map<CpuPtr, CpuEnergyPtr>();
+ surf_energy = new std::map<Cpu*, CpuEnergy*>();
surf_callback_connect(cpuCreatedCallbacks, energyCpuCreatedCallback);
surf_callback_connect(cpuDestructedCallbacks, energyCpuDestructedCallback);
surf_callback_connect(cpuActionStateChangedCallbacks, energyCpuActionStateChangedCallback);
/**
*
*/
-CpuEnergy::CpuEnergy(CpuPtr ptr)
- : cpu(ptr)
+CpuEnergy::CpuEnergy(Cpu *ptr)
{
+ cpu = ptr;
total_energy = 0;
power_range_watts_list = getWattsRangeList();
last_updated = surf_get_clock();
xbt_dynar_free(&power_range_watts_list);
}
+
+double CpuEnergy::getWattMinAt(int pstate) {
+ xbt_dynar_t power_range_list = power_range_watts_list;
+ xbt_assert(power_range_watts_list, "No power range properties specified for host %s", cpu->getName());
+ xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, static_cast<CpuCas01*>(cpu)->getPState(), xbt_dynar_t);
+ double min_power = xbt_dynar_get_as(current_power_values, 0, double);
+ return min_power;
+}
+double CpuEnergy::getWattMaxAt(int pstate) {
+ xbt_dynar_t power_range_list = power_range_watts_list;
+ xbt_assert(power_range_watts_list, "No power range properties specified for host %s", cpu->getName());
+ xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, static_cast<CpuCas01*>(cpu)->getPState(), xbt_dynar_t);
+ double max_power = xbt_dynar_get_as(current_power_values, 1, double);
+ return max_power;
+}
+
/**
* Computes the power consumed by the host according to the current pstate and processor load
*
double CpuEnergy::getCurrentWattsValue(double cpu_load)
{
xbt_dynar_t power_range_list = power_range_watts_list;
-
- if (power_range_list == NULL)
- {
- XBT_DEBUG("No power range properties specified for host %s", cpu->getName());
- return 0;
- }
- /*xbt_assert(xbt_dynar_length(power_range_list) == xbt_dynar_length(cpu->p_powerPeakList),
- "The number of power ranges in the properties does not match the number of pstates for host %s",
- cpu->getName());*/
+ xbt_assert(power_range_watts_list, "No power range properties specified for host %s", cpu->getName());
/* retrieve the power values associated with the current pstate */
- xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, static_cast<CpuCas01Ptr>(cpu)->getPState(), xbt_dynar_t);
+ xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, static_cast<CpuCas01*>(cpu)->getPState(), xbt_dynar_t);
/* min_power corresponds to the idle power (cpu load = 0) */
/* max_power is the power consumed at 100% cpu load */
double CpuEnergy::getConsumedEnergy()
{
- if(last_updated < surf_get_clock()) {
+
+ if(last_updated < surf_get_clock()) {
if (cpu->getState() == SURF_RESOURCE_OFF)
update_consumption_off(cpu, this);
else
