-/* Copyright (c) 2010-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2010-2019. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
if (this->pstate_ == pstate_off_) // The host is off (or was off at the beginning of this time interval)
return this->watts_off_;
- double current_speed = host_->get_speed();
+ double current_speed = host_->get_pstate_speed(this->pstate_);
double cpu_load;
// 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
+ else {
cpu_load = host_->pimpl_cpu->get_constraint()->get_usage() / current_speed;
- /** Divide by the number of cores here **/
- cpu_load /= host_->pimpl_cpu->get_core_count();
+ /** Divide by the number of cores here **/
+ cpu_load /= host_->pimpl_cpu->get_core_count();
- if (cpu_load > 1) // A machine with a load > 1 consumes as much as a fully loaded machine, not more
- cpu_load = 1;
- if (cpu_load > 0)
- host_was_used_ = true;
+ if (cpu_load > 1) // A machine with a load > 1 consumes as much as a fully loaded machine, not more
+ cpu_load = 1;
+ if (cpu_load > 0)
+ host_was_used_ = true;
+ }
/* The problem with this model is that the load is always 0 or 1, never something less.
* Another possibility could be to model the total energy as
/* 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(this->pstate_);
- double current_power = 0;
- double min_power = 0;
- double max_power = 0;
- double power_slope = 0;
+ double current_power;
+ double min_power;
+ double max_power;
+ double power_slope;
if (cpu_load > 0) { /* Something is going on, the machine is not idle */
min_power = range.min_;
* i.e., we need min_power + (maxCpuLoad-1/coreCount)*power_slope == max_power
* (maxCpuLoad is by definition 1)
*/
- double power_slope;
int coreCount = host_->get_core_count();
double coreReciprocal = static_cast<double>(1) / static_cast<double>(coreCount);
if (coreCount > 1)
current_power = min_power + (cpu_load - coreReciprocal) * power_slope;
} else { /* Our machine is idle, take the dedicated value! */
+ min_power = 0;
+ max_power = 0;
+ power_slope = 0;
current_power = range.idle_;
}
simgrid::kernel::activity::ExecImpl::on_creation.connect([](simgrid::kernel::activity::ExecImplPtr activity){
if (activity->host_ != nullptr) { // We only run on one host
simgrid::s4u::Host* host = activity->host_;
- if (dynamic_cast<simgrid::s4u::VirtualMachine*>(activity->host_))
- host = dynamic_cast<simgrid::s4u::VirtualMachine*>(activity->host_)->get_pm();
+ simgrid::s4u::VirtualMachine* vm = dynamic_cast<simgrid::s4u::VirtualMachine*>(host);
+ if (vm != nullptr)
+ host = vm->get_pm();
host->extension<HostEnergy>()->update();
}