* under the terms of the license (GNU LGPL) which comes with this package. */
#include <src/surf/plugins/energy.hpp>
-#include <src/surf/cpu_cas01.hpp>
+#include <src/surf/cpu_interface.hpp>
#include <src/surf/virtual_machine.hpp>
/** @addtogroup SURF_plugin_energy
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_energy, surf,
"Logging specific to the SURF energy plugin");
-namespace simgrid {
-namespace energy {
-
-std::map<simgrid::surf::Host*, HostEnergy*> *surf_energy = NULL;
-
-}
-}
+std::map<simgrid::surf::Host*, simgrid::energy::HostEnergy*> *simgrid::energy::surf_energy = NULL;
using simgrid::energy::HostEnergy;
-using simgrid::energy::surf_energy;
/* Computes the consumption so far. Called lazily on need. */
static void update_consumption(simgrid::surf::Host *host, HostEnergy *host_energy) {
- double cpu_load = lmm_constraint_get_usage(host->p_cpu->getConstraint()) / host->p_cpu->m_speedPeak;
double start_time = host_energy->last_updated;
double finish_time = surf_get_clock();
+ double cpu_load;
+ if (host->p_cpu->m_speedPeak == 0)
+ // Some users declare a pstate of speed 0 flops (eg to model boot time).
+ // We consider that the machine is then fully loaded. That's arbitrary but it avoids a NaN
+ cpu_load = 1;
+ else
+ cpu_load = lmm_constraint_get_usage(host->p_cpu->getConstraint()) / host->p_cpu->m_speedPeak;
+
+ if (cpu_load > 1) // A machine with a load > 1 consumes as much as a fully loaded machine, not mores
+ cpu_load = 1;
double previous_energy = host_energy->total_energy;
double instantaneous_consumption;
- if (host->getState() == SURF_RESOURCE_OFF)
+ if (host->isOff())
instantaneous_consumption = host_energy->watts_off;
else
instantaneous_consumption = host_energy->getCurrentWattsValue(cpu_load);
host_energy->total_energy = previous_energy + energy_this_step;
host_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, host->p_cpu->m_speedPeak, previous_energy, energy_this_step);
+ XBT_DEBUG("[update_energy of %s] period=[%.2f-%.2f]; current power peak=%.0E flop/s; consumption change: %.2f J -> %.2f J",
+ host->getName(), start_time, finish_time, host->p_cpu->m_speedPeak, previous_energy, energy_this_step);
}
/** \ingroup SURF_plugin_energy
simgrid::energy::surf_energy = new std::map<simgrid::surf::Host*, simgrid::energy::HostEnergy*>();
- /* The following attaches an anonymous function to the Host::onCreation signal */
+ /* The following attaches an anonymous function to the Host::onCreation signal */
/* Search for "C++ lambda" for more information on the syntax used here */
- simgrid::surf::Host::onCreation.connect([](simgrid::surf::Host *host) {
- (*surf_energy)[host] = new HostEnergy(host);
- });
-
- simgrid::surf::VMCreatedCallbacks.connect([](simgrid::surf::VirtualMachine* vm) {
- std::map<simgrid::surf::Host*, HostEnergy*>::iterator host_energy_it = surf_energy->find(vm->p_subWs);
- xbt_assert(host_energy_it != surf_energy->end(), "The host is not in surf_energy.");
- (*surf_energy)[vm] = host_energy_it->second;
- host_energy_it->second->ref(); // protect the HostEnergy from getting deleted too early
- });
-
- simgrid::surf::Host::onDestruction.connect([](simgrid::surf::Host *host) {
- std::map<simgrid::surf::Host*, HostEnergy*>::iterator host_energy_it = surf_energy->find(host);
- xbt_assert(host_energy_it != surf_energy->end(), "The host is not in surf_energy.");
-
- HostEnergy *host_energy = host_energy_it->second;
- update_consumption(host, host_energy);
-
- if (host_energy_it->second->refcount == 1) // Don't display anything for virtual CPUs
- XBT_INFO("Total energy of host %s: %f Joules", host->getName(), host_energy->getConsumedEnergy());
- host_energy_it->second->unref();
- surf_energy->erase(host_energy_it);
- });
- simgrid::surf::CpuAction::onStateChange.connect([]
- (simgrid::surf::CpuAction *action,
- e_surf_action_state_t old,
- e_surf_action_state_t cur) {
- const char *name = getActionCpu(action)->getName();
- simgrid::surf::Host *host = static_cast<simgrid::surf::Host*>(surf_host_resource_priv(sg_host_by_name(name)));
-
- HostEnergy *host_energy = (*surf_energy)[host];
-
- if(host_energy->last_updated < surf_get_clock())
- update_consumption(host, host_energy);
-
- });
-
- simgrid::surf::Host::onStateChange.connect([]
- (simgrid::surf::Host *host,
- e_surf_resource_state_t oldState,
- e_surf_resource_state_t newState) {
- HostEnergy *host_energy = (*surf_energy)[host];
-
- if(host_energy->last_updated < surf_get_clock())
- update_consumption(host, host_energy);
- });
-
- simgrid::surf::surfExitCallbacks.connect([]() {
- delete surf_energy;
- surf_energy = NULL;
- });
+ simgrid::surf::Host::onCreation.connect([](simgrid::surf::Host *host) {
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host)) // Ignore virtual machines
+ return;
+
+ (*simgrid::energy::surf_energy)[host] = new HostEnergy(host);
+ });
+
+ simgrid::surf::Host::onDestruction.connect([](simgrid::surf::Host *host) {
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host)) // Ignore virtual machines
+ return;
+
+ std::map<simgrid::surf::Host*, HostEnergy*>::iterator host_energy_it = simgrid::energy::surf_energy->find(host);
+ xbt_assert(host_energy_it != simgrid::energy::surf_energy->end(), "The host is not in surf_energy.");
+
+ HostEnergy *host_energy = host_energy_it->second;
+ update_consumption(host, host_energy);
+
+ XBT_INFO("Total energy of host %s: %f Joules", host->getName(), host_energy->getConsumedEnergy());
+ host_energy_it->second->unref();
+ simgrid::energy::surf_energy->erase(host_energy_it);
+ });
+
+ simgrid::surf::CpuAction::onStateChange.connect([](simgrid::surf::CpuAction *action,
+ e_surf_action_state_t old,
+ e_surf_action_state_t cur) {
+ const char *name = getActionCpu(action)->getName();
+ simgrid::surf::Host *host = surf_host_resource_priv(sg_host_by_name(name));
+ simgrid::surf::VirtualMachine *vm = dynamic_cast<simgrid::surf::VirtualMachine*>(host);
+ if (vm) // If it's a VM, take the corresponding PM
+ host = surf_host_resource_priv(vm->getPm());
+
+ HostEnergy *host_energy = (*simgrid::energy::surf_energy)[host];
+
+ if(host_energy->last_updated < surf_get_clock())
+ update_consumption(host, host_energy);
+
+ });
+
+ simgrid::surf::Host::onStateChange.connect([] (simgrid::surf::Host *host) {
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host)) // Ignore virtual machines
+ return;
+
+ HostEnergy *host_energy = (*simgrid::energy::surf_energy)[host];
+
+ if(host_energy->last_updated < surf_get_clock())
+ update_consumption(host, host_energy);
+ });
+
+ simgrid::surf::surfExitCallbacks.connect([]() {
+ delete simgrid::energy::surf_energy;
+ simgrid::energy::surf_energy = NULL;
+ });
}
}
double HostEnergy::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", host->getName());
- xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, static_cast<simgrid::surf::CpuCas01*>(host->p_cpu)->getPState(), xbt_dynar_t);
+ xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, host->p_cpu->getPState(), xbt_dynar_t);
double min_power = xbt_dynar_get_as(current_power_values, 0, double);
return min_power;
}
double HostEnergy::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", host->getName());
- xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, static_cast<simgrid::surf::CpuCas01*>(host->p_cpu)->getPState(), xbt_dynar_t);
+ xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, host->p_cpu->getPState(), xbt_dynar_t);
double max_power = xbt_dynar_get_as(current_power_values, 1, double);
return max_power;
}
xbt_dynar_t power_range_list = power_range_watts_list;
xbt_assert(power_range_watts_list, "No power range properties specified for host %s", host->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<simgrid::surf::CpuCas01*>(host->p_cpu)->getPState(),
- xbt_dynar_t);
+ int pstate = host->p_cpu->getPState();
+ xbt_assert(pstate < (int)xbt_dynar_length(power_range_list),
+ "pstate %d >= power range amound %d",pstate,(int)xbt_dynar_length(power_range_list));
+ /* retrieve the power values associated with the current pstate */
+ xbt_dynar_t current_power_values = xbt_dynar_get_as( power_range_list, pstate, xbt_dynar_t);
- /* min_power corresponds to the idle power (cpu load = 0) */
- /* max_power is the power consumed at 100% cpu load */
- double min_power = xbt_dynar_get_as(current_power_values, 0, double);
- double max_power = xbt_dynar_get_as(current_power_values, 1, double);
- double power_slope = max_power - min_power;
+ /* min_power corresponds to the idle power (cpu load = 0) */
+ /* max_power is the power consumed at 100% cpu load */
+ double min_power = xbt_dynar_get_as(current_power_values, 0, double);
+ double max_power = xbt_dynar_get_as(current_power_values, 1, double);
+ double power_slope = max_power - min_power;
- double current_power = min_power + cpu_load * power_slope;
+ double current_power = min_power + cpu_load * power_slope;
XBT_DEBUG("[get_current_watts] min_power=%f, max_power=%f, slope=%f", min_power, max_power, power_slope);
- XBT_DEBUG("[get_current_watts] Current power (watts) = %f, load = %f", current_power, cpu_load);
+ XBT_DEBUG("[get_current_watts] Current power (watts) = %f, load = %f", current_power, cpu_load);
return current_power;
}
