simgrid::s4u::Host* host = nullptr;
std::vector<PowerRange>
power_range_watts_list; /*< List of (min_power,max_power) pairs corresponding to each cpu pstate */
+
+ /* We need to keep track of what pstate has been used, as we will sometimes
+ * be notified only *after* a pstate has been used (but we need to update the energy consumption
+ * with the old pstate!)
+ */
+ int pstate = 0;
+
public:
double watts_off = 0.0; /*< Consumption when the machine is turned off (shutdown) */
double total_energy = 0.0; /*< Total energy consumed by the host */
double start_time = this->last_updated;
double finish_time = surf_get_clock();
double cpu_load;
- if (host->pimpl_cpu->getPstateSpeedCurrent() <= 0)
+ double current_speed = host->speed();
+ if (current_speed <= 0)
// Some users declare a pstate of speed 0 flops (e.g., 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->pimpl_cpu->constraint()) / host->pimpl_cpu->getPstateSpeedCurrent();
+ cpu_load = lmm_constraint_get_usage(host->pimpl_cpu->constraint()) / current_speed;
/** Divide by the number of cores here **/
cpu_load /= host->pimpl_cpu->coreCount();
this->total_energy = previous_energy + energy_this_step;
this->last_updated = finish_time;
-
+ this->pstate = host->pstate();
XBT_DEBUG(
"[update_energy of %s] period=[%.2f-%.2f]; current power peak=%.0E flop/s; consumption change: %.2f J -> %.2f J",
host->cname(), start_time, finish_time, host->pimpl_cpu->speed_.peak, previous_energy, energy_this_step);
/* min_power corresponds to the power consumed when only one core is active */
/* max_power is the power consumed at 100% cpu load */
- auto range = power_range_watts_list.at(host->pstate());
+ auto range = power_range_watts_list.at(this->pstate);
double current_power = 0;
double min_power = 0;
double max_power = 0;
{
for (simgrid::surf::Cpu* cpu : action->cpus()) {
simgrid::s4u::Host* host = cpu->getHost();
- if (host == nullptr)
- continue;
+ if (host != nullptr) {
- // If it's a VM, take the corresponding PM
- simgrid::s4u::VirtualMachine* vm = dynamic_cast<simgrid::s4u::VirtualMachine*>(host);
- if (vm) // If it's a VM, take the corresponding PM
- host = vm->pimpl_vm_->getPm();
+ // If it's a VM, take the corresponding PM
+ simgrid::s4u::VirtualMachine* vm = dynamic_cast<simgrid::s4u::VirtualMachine*>(host);
+ if (vm) // If it's a VM, take the corresponding PM
+ host = vm->pimpl_vm_->getPm();
- // Get the host_energy extension for the relevant host
- HostEnergy* host_energy = host->extension<HostEnergy>();
+ // Get the host_energy extension for the relevant host
+ HostEnergy* host_energy = host->extension<HostEnergy>();
- if (host_energy->last_updated < surf_get_clock())
- host_energy->update();
+ if (host_energy->last_updated < surf_get_clock())
+ host_energy->update();
+ }
}
}
-/* This callback is fired either when the host change its state (on/off) or its speed
- * (because the user changed the pstate, or because of external trace events) */
+/* This callback is fired either when the host changes its state (on/off) ("onStateChange") or its speed
+ * (because the user changed the pstate, or because of external trace events) ("onSpeedChange") */
static void onHostChange(simgrid::s4u::Host& host)
{
if (dynamic_cast<simgrid::s4u::VirtualMachine*>(&host)) // Ignore virtual machines
HostEnergy* host_energy = host.extension<HostEnergy>();
- if (host_energy->last_updated < surf_get_clock())
- host_energy->update();
+ host_energy->update();
}
static void onHostDestruction(simgrid::s4u::Host& host)
HostEnergy* host_energy = host.extension<HostEnergy>();
host_energy->update();
- XBT_INFO("Total energy of host %s: %f Joules", host.cname(), host_energy->getConsumedEnergy());
+ XBT_INFO("Energy consumption of host %s: %f Joules", host.cname(), host_energy->getConsumedEnergy());
}
static void onSimulationEnd()
{
sg_host_t* host_list = sg_host_list();
int host_count = sg_host_count();
- double total_energy = 0.0; // Total energy consumption (whole plattform)
+ double total_energy = 0.0; // Total energy consumption (whole platform)
double used_hosts_energy = 0.0; // Energy consumed by hosts that computed something
for (int i = 0; i < host_count; i++) {
if (dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[i]) == nullptr) { // Ignore virtual machines
bool host_was_used = (host_list[i]->extension<HostEnergy>()->last_updated != 0);
- double energy = 0.0;
- energy = host_list[i]->extension<HostEnergy>()->getConsumedEnergy();
+ double energy = host_list[i]->extension<HostEnergy>()->getConsumedEnergy();
total_energy += energy;
if (host_was_used)
used_hosts_energy += energy;
}
}
- XBT_INFO("Summed energy consumption: %f Joules; used hosts consumed: %f Joules; unused (idle) hosts consumed: %f",
+ XBT_INFO("Total energy consumption: %f Joules (used hosts: %f Joules; unused/idle hosts: %f)",
total_energy, used_hosts_energy, total_energy - used_hosts_energy);
+ xbt_free(host_list);
}
/* **************************** Public interface *************************** */
