XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_energy, surf,
"Logging specific to the SURF energy plugin");
-std::map<simgrid::surf::Host*, simgrid::energy::HostEnergy*> *simgrid::energy::surf_energy = NULL;
-
using simgrid::energy::HostEnergy;
+namespace simgrid {
+namespace energy {
+
+simgrid::xbt::Extension<simgrid::Host, HostEnergy> HostEnergy::EXTENSION_ID;
+
/* Computes the consumption so far. Called lazily on need. */
-static void update_consumption(simgrid::surf::Host *host, HostEnergy *host_energy) {
- double start_time = host_energy->last_updated;
+void HostEnergy::update()
+{
+ simgrid::surf::Host* surf_host = host->extension<simgrid::surf::Host>();
+ double start_time = this->last_updated;
double finish_time = surf_get_clock();
double cpu_load;
- if (host->p_cpu->m_speedPeak == 0)
+ if (surf_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;
+ cpu_load = lmm_constraint_get_usage(surf_host->p_cpu->getConstraint())
+ / surf_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 previous_energy = this->total_energy;
double instantaneous_consumption;
if (host->isOff())
- instantaneous_consumption = host_energy->watts_off;
+ instantaneous_consumption = this->watts_off;
else
- instantaneous_consumption = host_energy->getCurrentWattsValue(cpu_load);
+ instantaneous_consumption = this->getCurrentWattsValue(cpu_load);
double energy_this_step = instantaneous_consumption*(finish_time-start_time);
- host_energy->total_energy = previous_energy + energy_this_step;
- host_energy->last_updated = finish_time;
+ this->total_energy = previous_energy + energy_this_step;
+ this->last_updated = finish_time;
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);
+ surf_host->getName(), start_time, finish_time, surf_host->p_cpu->m_speedPeak, previous_energy, energy_this_step);
}
-namespace simgrid {
-namespace energy {
-
-HostEnergy::HostEnergy(simgrid::surf::Host *ptr) :
+HostEnergy::HostEnergy(simgrid::Host *ptr) :
host(ptr), last_updated(surf_get_clock())
{
initWattsRangeList();
double HostEnergy::getWattMinAt(int pstate)
{
xbt_assert(!power_range_watts_list.empty(),
- "No power range properties specified for host %s", host->getName());
+ "No power range properties specified for host %s", host->getName().c_str());
return power_range_watts_list[pstate].first;
}
double HostEnergy::getWattMaxAt(int pstate)
{
xbt_assert(!power_range_watts_list.empty(),
- "No power range properties specified for host %s", host->getName());
+ "No power range properties specified for host %s", host->getName().c_str());
return power_range_watts_list[pstate].second;
}
double HostEnergy::getCurrentWattsValue(double cpu_load)
{
xbt_assert(!power_range_watts_list.empty(),
- "No power range properties specified for host %s", host->getName());
+ "No power range properties specified for host %s", host->getName().c_str());
/* min_power corresponds to the idle power (cpu load = 0) */
/* max_power is the power consumed at 100% cpu load */
- auto range = power_range_watts_list.at(host->p_cpu->getPState());
+ auto range = power_range_watts_list.at(host->getPState());
double min_power = range.first;
double max_power = range.second;
double power_slope = max_power - min_power;
double HostEnergy::getConsumedEnergy()
{
- if(last_updated < surf_get_clock())
- update_consumption(host, this);
+ if (last_updated < surf_get_clock()) // We need to simcall this as it modifies the environment
+ simgrid::simix::kernel(std::bind(&HostEnergy::update, this));
+
return total_energy;
}
/* retrieve the power values associated with the current pstate */
xbt_dynar_t current_power_values = xbt_str_split(xbt_dynar_get_as(all_power_values, i, char*), ":");
xbt_assert(xbt_dynar_length(current_power_values) > 1,
- "Power properties incorrectly defined - could not retrieve min and max power values for host %s",
- host->getName());
+ "Power properties incorrectly defined - "
+ "could not retrieve min and max power values for host %s",
+ host->getName().c_str());
/* min_power corresponds to the idle power (cpu load = 0) */
/* max_power is the power consumed at 100% cpu load */
xbt_dynar_free(&all_power_values);
}
-
-double surf_host_get_wattmin_at(sg_host_t host, int pstate){
- xbt_assert(surf_energy!=NULL, "The Energy plugin is not active. Please call sg_energy_plugin_init() during initialization.");
- std::map<simgrid::surf::Host*, HostEnergy*>::iterator hostIt = surf_energy->find(host->extension<simgrid::surf::Host>());
- return hostIt->second->getWattMinAt(pstate);
}
-double surf_host_get_wattmax_at(sg_host_t host, int pstate){
- xbt_assert(surf_energy!=NULL, "The Energy plugin is not active. Please call sg_energy_plugin_init() during initialization.");
- std::map<simgrid::surf::Host*, HostEnergy*>::iterator hostIt = surf_energy->find(host->extension<simgrid::surf::Host>());
- return hostIt->second->getWattMaxAt(pstate);
}
-double surf_host_get_consumed_energy(sg_host_t host){
- xbt_assert(surf_energy!=NULL, "The Energy plugin is not active. Please call sg_energy_plugin_init() during initialization.");
- std::map<simgrid::surf::Host*, HostEnergy*>::iterator hostIt = surf_energy->find(host->extension<simgrid::surf::Host>());
- return hostIt->second->getConsumedEnergy();
+/* **************************** events callback *************************** */
+static void onCreation(simgrid::surf::Host *host) {
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host)) // Ignore virtual machines
+ return;
+ host->p_host->extension_set(new HostEnergy(host->p_host));
}
+static void onActionStateChange(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 = sg_host_by_name(name)->extension<simgrid::surf::Host>();
+ simgrid::surf::VirtualMachine *vm = dynamic_cast<simgrid::surf::VirtualMachine*>(host);
+ if (vm) // If it's a VM, take the corresponding PM
+ host = vm->getPm()->extension<simgrid::surf::Host>();
+
+ HostEnergy *host_energy = host->p_host->extension<HostEnergy>();
+
+ if(host_energy->last_updated < surf_get_clock())
+ host_energy->update();
}
+
+static void onHostStateChange(simgrid::surf::Host *host) {
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host)) // Ignore virtual machines
+ return;
+
+ HostEnergy *host_energy = host->p_host->extension<HostEnergy>();
+
+ if(host_energy->last_updated < surf_get_clock())
+ host_energy->update();
}
-/* **************************** Public interface *************************** */
+static void onHostDestruction(simgrid::surf::Host *host) {
+ // Ignore virtual machines
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host))
+ return;
+ HostEnergy *host_energy = host->p_host->extension<HostEnergy>();
+ host_energy->update();
+ XBT_INFO("Total energy of host %s: %f Joules", host->getName(), host_energy->getConsumedEnergy());
+}
+/* **************************** Public interface *************************** */
/** \ingroup SURF_plugin_energy
* \brief Enable energy plugin
* \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 (simgrid::energy::surf_energy == NULL) {
-
- simgrid::energy::surf_energy = new std::map<simgrid::surf::Host*, simgrid::energy::HostEnergy*>();
-
- /* 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) {
- 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 = sg_host_by_name(name)->extension<simgrid::surf::Host>();
- simgrid::surf::VirtualMachine *vm = dynamic_cast<simgrid::surf::VirtualMachine*>(host);
- if (vm) // If it's a VM, take the corresponding PM
- host = vm->getPm()->extension<simgrid::surf::Host>();
-
- 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];
+void sg_energy_plugin_init(void)
+{
+ if (HostEnergy::EXTENSION_ID.valid())
+ return;
- if(host_energy->last_updated < surf_get_clock())
- update_consumption(host, host_energy);
- });
+ HostEnergy::EXTENSION_ID = simgrid::Host::extension_create<HostEnergy>();
- simgrid::surf::surfExitCallbacks.connect([]() {
- delete simgrid::energy::surf_energy;
- simgrid::energy::surf_energy = NULL;
- });
- }
+ simgrid::surf::Host::onCreation.connect(&onCreation);
+ simgrid::surf::CpuAction::onStateChange.connect(&onActionStateChange);
+ simgrid::surf::Host::onStateChange.connect(&onHostStateChange);
+ simgrid::surf::Host::onDestruction.connect(&onHostDestruction);
}
/** @brief Returns the total energy consumed by the host so far (in Joules)
* See also @ref SURF_plugin_energy.
*/
double sg_host_get_consumed_energy(sg_host_t host) {
- return simgrid::energy::surf_host_get_consumed_energy(host);
+ xbt_assert(HostEnergy::EXTENSION_ID.valid(),
+ "The Energy plugin is not active. "
+ "Please call sg_energy_plugin_init() during initialization.");
+ return host->extension<HostEnergy>()->getConsumedEnergy();
}
/** @brief Get the amount of watt dissipated at the given pstate when the host is idling */
double sg_host_get_wattmin_at(sg_host_t host, int pstate) {
- return simgrid::simix::kernel(std::bind(
- simgrid::energy::surf_host_get_wattmin_at, host, pstate
- ));
+ xbt_assert(HostEnergy::EXTENSION_ID.valid(),
+ "The Energy plugin is not active. "
+ "Please call sg_energy_plugin_init() during initialization.");
+ return host->extension<HostEnergy>()->getWattMinAt(pstate);
}
/** @brief Returns the amount of watt dissipated at the given pstate when the host burns CPU at 100% */
double sg_host_get_wattmax_at(sg_host_t host, int pstate) {
- return simgrid::simix::kernel(std::bind(
- simgrid::energy::surf_host_get_wattmax_at, host, pstate
- ));
+ xbt_assert(HostEnergy::EXTENSION_ID.valid(),
+ "The Energy plugin is not active. "
+ "Please call sg_energy_plugin_init() during initialization.");
+ return host->extension<HostEnergy>()->getWattMaxAt(pstate);
}
