X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/b1da263522ee9c5ca0b60d0ce75d3f06a2e641ba..34bbb917a7967e63d8eaa841cdb79f3c711f7ecc:/src/surf/plugins/energy.cpp diff --git a/src/surf/plugins/energy.cpp b/src/surf/plugins/energy.cpp index 4d44af5ddd..75b43a2bbb 100644 --- a/src/surf/plugins/energy.cpp +++ b/src/surf/plugins/energy.cpp @@ -4,8 +4,14 @@ /* 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. */ -#include "energy.hpp" -#include "../cpu_cas01.hpp" +#include +#include + +#include +#include +#include +#include +#include /** @addtogroup SURF_plugin_energy @@ -46,229 +52,239 @@ To simulate the energy-related elements, first call the #sg_energy_plugin_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 *surf_energy=NULL; +using simgrid::energy::HostEnergy; -static void energyCpuCreatedCallback(Cpu *cpu){ - (*surf_energy)[cpu] = new CpuEnergy(cpu); -} +namespace simgrid { +namespace energy { + +simgrid::xbt::Extension HostEnergy::EXTENSION_ID; -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; +/* Computes the consumption so far. Called lazily on need. */ +void HostEnergy::update() +{ + simgrid::surf::Host* surf_host = host->extension(); + double start_time = this->last_updated; double finish_time = surf_get_clock(); + double cpu_load; + 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(surf_host->p_cpu->getConstraint()) + / surf_host->p_cpu->m_speedPeak; - double previous_energy = cpu_energy->total_energy; - double energy_this_step = cpu_energy->getCurrentWattsValue(cpu_load)*(finish_time-start_time); + if (cpu_load > 1) // A machine with a load > 1 consumes as much as a fully loaded machine, not mores + cpu_load = 1; - cpu_energy->total_energy = previous_energy + energy_this_step; - cpu_energy->last_updated = finish_time; + double previous_energy = this->total_energy; - 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(Cpu *cpu, CpuEnergy *cpu_energy) { - double start_time = cpu_energy->last_updated; - double finish_time = surf_get_clock(); + double instantaneous_consumption; + if (host->isOff()) + instantaneous_consumption = this->watts_off; + else + instantaneous_consumption = this->getCurrentWattsValue(cpu_load); - double previous_energy = cpu_energy->total_energy; - double energy_this_step = cpu_energy->watts_off*(finish_time-start_time); + double energy_this_step = instantaneous_consumption*(finish_time-start_time); - cpu_energy->total_energy = previous_energy + energy_this_step; - cpu_energy->last_updated = finish_time; + this->total_energy = previous_energy + energy_this_step; + this->last_updated = finish_time; - XBT_DEBUG("[cpu_update_energy] off period=[%.2f-%.2f]; consumption change: %.2f J -> %.2f J", - start_time, finish_time, 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", + surf_host->getName(), start_time, finish_time, surf_host->p_cpu->m_speedPeak, previous_energy, energy_this_step); } -static void energyCpuDestructedCallback(Cpu *cpu){ - std::map::iterator cpu_energy_it = surf_energy->find(cpu); - xbt_assert(cpu_energy_it != surf_energy->end(), "The cpu is not in surf_energy."); - - 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); - - // 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); +HostEnergy::HostEnergy(simgrid::Host *ptr) : + host(ptr), last_updated(surf_get_clock()) +{ + initWattsRangeList(); + + if (host->getProperties() != NULL) { + char* off_power_str = (char*)xbt_dict_get_or_null(host->getProperties(), "watt_off"); + if (off_power_str != NULL) + watts_off = atof(off_power_str); + else + watts_off = 0; } } -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(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) - update_consumption_off(cpu, cpu_energy); - else - update_consumption_running(cpu, cpu_energy); - } +HostEnergy::~HostEnergy() +{ + // Ignore virtual machines + if (dynamic_cast(host->extension())) + return; + this->update(); + XBT_INFO("Total energy of host %s: %f Joules", + host->getName().c_str(), this->getConsumedEnergy()); } -static void sg_energy_plugin_exit() +double HostEnergy::getWattMinAt(int pstate) { - delete surf_energy; - surf_energy = NULL; + xbt_assert(!power_range_watts_list.empty(), + "No power range properties specified for host %s", host->getName().c_str()); + return power_range_watts_list[pstate].first; } -/** \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 (surf_energy == NULL) { - surf_energy = new std::map(); - surf_callback_connect(cpuCreatedCallbacks, energyCpuCreatedCallback); - surf_callback_connect(cpuDestructedCallbacks, energyCpuDestructedCallback); - surf_callback_connect(cpuActionStateChangedCallbacks, energyCpuActionStateChangedCallback); - surf_callback_connect(surfExitCallbacks, sg_energy_plugin_exit); - surf_callback_connect(cpuStateChangedCallbacks, energyStateChangedCallback); - } +double HostEnergy::getWattMaxAt(int pstate) +{ + xbt_assert(!power_range_watts_list.empty(), + "No power range properties specified for host %s", host->getName().c_str()); + return power_range_watts_list[pstate].second; } -/** - * - */ -CpuEnergy::CpuEnergy(Cpu *ptr) +/** @brief Computes the power consumed by the host according to the current pstate and processor load */ +double HostEnergy::getCurrentWattsValue(double cpu_load) { - cpu = ptr; - total_energy = 0; - power_range_watts_list = getWattsRangeList(); - last_updated = surf_get_clock(); - - if (cpu->getProperties() != NULL) { - char* off_power_str = (char*)xbt_dict_get_or_null(cpu->getProperties(), "watt_off"); - if (off_power_str != NULL) - watts_off = atof(off_power_str); - else - watts_off = 0; - } + xbt_assert(!power_range_watts_list.empty(), + "No power range properties specified for host %s", host->getName().c_str()); -} - -CpuEnergy::~CpuEnergy(){ - unsigned int iter; - xbt_dynar_t power_tuple = NULL; - xbt_dynar_foreach(power_range_watts_list, iter, power_tuple) - xbt_dynar_free(&power_tuple); - xbt_dynar_free(&power_range_watts_list); -} + /* 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->getPState()); + double min_power = range.first; + double max_power = range.second; + double power_slope = max_power - min_power; + 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); -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(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(cpu)->getPState(), xbt_dynar_t); - double max_power = xbt_dynar_get_as(current_power_values, 1, double); - return max_power; + return current_power; } -/** - * Computes the power consumed by the host according to the current pstate and processor load - * - */ -double CpuEnergy::getCurrentWattsValue(double cpu_load) +double HostEnergy::getConsumedEnergy() { - 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()); + if(last_updated < surf_get_clock()) + this->update(); + return total_energy; +} - /* retrieve the power values associated with the current pstate */ - xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, static_cast(cpu)->getPState(), xbt_dynar_t); +void HostEnergy::initWattsRangeList() +{ + if (host->getProperties() == NULL) + return; + char* all_power_values_str = + (char*)xbt_dict_get_or_null(host->getProperties(), "watt_per_state"); + if (all_power_values_str == NULL) + return; - /* 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; + xbt_dynar_t all_power_values = xbt_str_split(all_power_values_str, ","); + int pstate_nb = xbt_dynar_length(all_power_values); - double current_power = min_power + cpu_load * power_slope; + for (int i=0; i< pstate_nb; i++) + { + /* 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().c_str()); - 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); + /* min_power corresponds to the idle power (cpu load = 0) */ + /* max_power is the power consumed at 100% cpu load */ + power_range_watts_list.push_back(power_range( + atof(xbt_dynar_get_as(current_power_values, 0, char*)), + atof(xbt_dynar_get_as(current_power_values, 1, char*)) + )); + } + xbt_dynar_free(&all_power_values); +} - return current_power; +double surf_host_get_wattmin_at(sg_host_t host, int pstate) +{ + xbt_assert(HostEnergy::EXTENSION_ID.valid(), + "The Energy plugin is not active. " + "Please call sg_energy_plugin_init() during initialization."); + return host->extension()->getWattMinAt(pstate); +} +double surf_host_get_wattmax_at(sg_host_t host, int pstate) +{ + xbt_assert(HostEnergy::EXTENSION_ID.valid(), + "The Energy plugin is not active. " + "Please call sg_energy_plugin_init() during initialization."); + return host->extension()->getWattMaxAt(pstate); } -double CpuEnergy::getConsumedEnergy() +double surf_host_get_consumed_energy(sg_host_t host) { - - if(last_updated < surf_get_clock()) { - if (cpu->getState() == SURF_RESOURCE_OFF) - update_consumption_off(cpu, this); - else - update_consumption_running(cpu, this); - } - return total_energy; + xbt_assert(HostEnergy::EXTENSION_ID.valid(), + "The Energy plugin is not active. " + "Please call sg_energy_plugin_init() during initialization."); + return host->extension()->getConsumedEnergy(); } -xbt_dynar_t CpuEnergy::getWattsRangeList() +} +} + +/* **************************** 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(void) { - xbt_dynar_t power_range_list; - xbt_dynar_t power_tuple; - int i = 0, pstate_nb=0; - xbt_dynar_t current_power_values; - double min_power, max_power; + if (HostEnergy::EXTENSION_ID.valid()) + return; - if (cpu->getProperties() == NULL) - return NULL; + HostEnergy::EXTENSION_ID = simgrid::Host::extension_create(); - char* all_power_values_str = (char*)xbt_dict_get_or_null(cpu->getProperties(), "watt_per_state"); + /* 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(host)) // Ignore virtual machines + return; + host->p_host->extension_set(new HostEnergy(host->p_host)); + }); - if (all_power_values_str == NULL) - return NULL; + 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::VirtualMachine *vm = dynamic_cast(host); + if (vm) // If it's a VM, take the corresponding PM + host = vm->getPm()->extension(); + HostEnergy *host_energy = host->p_host->extension(); - power_range_list = xbt_dynar_new(sizeof(xbt_dynar_t), NULL); - xbt_dynar_t all_power_values = xbt_str_split(all_power_values_str, ","); + if(host_energy->last_updated < surf_get_clock()) + host_energy->update(); - pstate_nb = xbt_dynar_length(all_power_values); - for (i=0; i< pstate_nb; i++) - { - /* retrieve the power values associated with the current pstate */ - 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", - cpu->getName()); + }); - /* min_power corresponds to the idle power (cpu load = 0) */ - /* max_power is the power consumed at 100% cpu load */ - min_power = atof(xbt_dynar_get_as(current_power_values, 0, char*)); - max_power = atof(xbt_dynar_get_as(current_power_values, 1, char*)); + simgrid::surf::Host::onStateChange.connect([] (simgrid::surf::Host *host) { + if (dynamic_cast(host)) // Ignore virtual machines + return; - power_tuple = xbt_dynar_new(sizeof(double), NULL); - xbt_dynar_push_as(power_tuple, double, min_power); - xbt_dynar_push_as(power_tuple, double, max_power); + HostEnergy *host_energy = host->p_host->extension(); - xbt_dynar_push_as(power_range_list, xbt_dynar_t, power_tuple); - xbt_dynar_free(¤t_power_values); - } - xbt_dynar_free(&all_power_values); - return power_range_list; + if(host_energy->last_updated < surf_get_clock()) + host_energy->update(); + }); +} + +/** @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); +} + +/** @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 + )); +} +/** @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 + )); }