X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/45c3f1cfee86fb48c96d53f8267f99b6db6e3d7a..347f9a2ca55bffc88bf965952b9be3a15535e908:/src/surf/plugins/energy.cpp diff --git a/src/surf/plugins/energy.cpp b/src/surf/plugins/energy.cpp index 993ac0b7ed..1ee70cfced 100644 --- a/src/surf/plugins/energy.cpp +++ b/src/surf/plugins/energy.cpp @@ -1,91 +1,179 @@ -/* Copyright (c) 2010, 2012-2014. The SimGrid Team. +/* Copyright (c) 2010, 2012-2015. 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. */ -#include "energy.hpp" -#include "../cpu_cas01.hpp" +#include +#include +#include /** @addtogroup SURF_plugin_energy - * - * - * BlaBla energy + + +This is the energy plugin, enabling to account not only for computation time, +but also for the dissipated energy in the simulated platform. + +The energy consumption of a CPU depends directly of its current load. Specify that consumption in your platform file as follows: + +\verbatim + + + + +\endverbatim + +The first property means that when your host is up and running, but without anything to do, it will dissipate 100 Watts. +If it's fully loaded, it will dissipate 200 Watts. If its load is at 50%, then it will dissipate 150 Watts. +The second property means that when your host is turned off, it will dissipate only 10 Watts (please note that these values are arbitrary). + +If your CPU is using pstates, then you can provide one consumption interval per pstate. + +\verbatim + + + + +\endverbatim + +That host has 3 levels of performance with the following performance: 100 Mflop/s, 50 Mflop/s or 20 Mflop/s. +It starts at pstate 0 (ie, at 100 Mflop/s). In this case, you have to specify one interval per pstate in the watt_per_state property. +In this example, the idle consumption is 95 Watts, 93 Watts and 90 Watts in each pstate while the CPU burn consumption are at 200 Watts, +170 Watts and 150 Watts respectively. + +To change the pstate of a given CPU, use the following functions: #MSG_host_get_nb_pstates(), #MSG_host_set_pstate(), #MSG_host_get_power_peak_at(). + +To simulate the energy-related elements, first call the #sg_energy_plugin_init() before your #MSG_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; +namespace simgrid { +namespace energy { -static void energyCpuCreatedCallback(CpuPtr cpu){ - (*surf_energy)[cpu] = new CpuEnergy(cpu); -} +std::map *surf_energy = NULL; -static void energyCpuDestructedCallback(CpuPtr cpu){ - std::map::iterator cpuIt = surf_energy->find(cpu); - xbt_assert(cpuIt != surf_energy->end(), "The cpu is not in surf_energy."); - XBT_INFO("Total energy (Joules) of host %s: %f", cpu->getName(), cpuIt->second->getConsumedEnergy()); - delete cpuIt->second; - surf_energy->erase(cpuIt); +} } -static void energyCpuActionStateChangedCallback(CpuActionPtr action){ - CpuPtr cpu = getActionCpu(action); - CpuEnergyPtr cpu_energy = (*surf_energy)[cpu]; +using simgrid::energy::HostEnergy; +using simgrid::energy::surf_energy; - if(cpu_energy->last_updated < surf_get_clock()) { - double cpu_load = lmm_constraint_get_usage(cpu->getConstraint()) / cpu->m_powerPeak; - double start_time = cpu_energy->last_updated; - double finish_time = surf_get_clock(); +/* 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(); - /*XBT_DEBUG("[cpu_update_energy] action time interval=(%f-%f), current power peak=%f, current pstate=%d", - start_time, finish_time, cpu->m_powerPeak, cpu->m_pstate);*/ - XBT_DEBUG("[cpu_update_energy] action time interval=(%f-%f), current power peak=%f", - start_time, finish_time, cpu->m_powerPeak); - double current_energy = cpu_energy->total_energy; - double action_energy = cpu_energy->getCurrentWattsValue(cpu_load)*(finish_time-start_time); + double previous_energy = host_energy->total_energy; - cpu_energy->total_energy = current_energy + action_energy; - cpu_energy->last_updated = finish_time; + double instantaneous_consumption; + if (host->getState() == SURF_RESOURCE_OFF) + instantaneous_consumption = host_energy->watts_off; + else + instantaneous_consumption = host_energy->getCurrentWattsValue(cpu_load); - XBT_DEBUG("[cpu_update_energy] old_energy_value=%f, action_energy_value=%f", current_energy, action_energy); - } -} + double energy_this_step = instantaneous_consumption*(finish_time-start_time); -static void sg_energy_plugin_exit() -{ - delete surf_energy; - surf_energy = NULL; + 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); } /** \ingroup SURF_plugin_energy * \brief Enable energy plugin - * \details Enable energy plugin to get joules consumption of each cpu. + * \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); + if (simgrid::energy::surf_energy == NULL) { + + simgrid::energy::surf_energy = new std::map(); + + /* 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::iterator host_energy_it = + surf_energy->find(vm->p_hostPM->extension(simgrid::surf::Host::EXTENSION_ID)); + 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::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(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; + }); } } +namespace simgrid { +namespace energy { + /** * */ -CpuEnergy::CpuEnergy(CpuPtr ptr) - : cpu(ptr) +HostEnergy::HostEnergy(simgrid::surf::Host *ptr) { + host = ptr; total_energy = 0; power_range_watts_list = getWattsRangeList(); last_updated = surf_get_clock(); + + 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; + } + } -CpuEnergy::~CpuEnergy(){ +HostEnergy::~HostEnergy(){ unsigned int iter; xbt_dynar_t power_tuple = NULL; xbt_dynar_foreach(power_range_watts_list, iter, power_tuple) @@ -94,25 +182,31 @@ CpuEnergy::~CpuEnergy(){ } -/** - * Computes the power consumed by the host according to the current pstate and processor load - * - */ -double CpuEnergy::getCurrentWattsValue(double cpu_load) +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(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(host->p_cpu)->getPState(), xbt_dynar_t); + double max_power = xbt_dynar_get_as(current_power_values, 1, double); + return max_power; +} + +/** @brief Computes the power consumed by the host according to the current pstate and processor load */ +double HostEnergy::getCurrentWattsValue(double cpu_load) { xbt_dynar_t power_range_list = power_range_watts_list; - - if (power_range_list == NULL) - { - XBT_DEBUG("No power range properties specified for host %s", cpu->getName()); - return 0; - } - /*xbt_assert(xbt_dynar_length(power_range_list) == xbt_dynar_length(cpu->p_powerPeakList), - "The number of power ranges in the properties does not match the number of pstates for host %s", - cpu->getName());*/ + 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(cpu)->getPState(), xbt_dynar_t); + xbt_dynar_t current_power_values = xbt_dynar_get_as( power_range_list, + static_cast(host->p_cpu)->getPState(), + xbt_dynar_t); /* min_power corresponds to the idle power (cpu load = 0) */ /* max_power is the power consumed at 100% cpu load */ @@ -128,12 +222,14 @@ double CpuEnergy::getCurrentWattsValue(double cpu_load) return current_power; } -double CpuEnergy::getConsumedEnergy() +double HostEnergy::getConsumedEnergy() { - return total_energy; + if(last_updated < surf_get_clock()) + update_consumption(host, this); + return total_energy; } -xbt_dynar_t CpuEnergy::getWattsRangeList() +xbt_dynar_t HostEnergy::getWattsRangeList() { xbt_dynar_t power_range_list; xbt_dynar_t power_tuple; @@ -141,10 +237,10 @@ xbt_dynar_t CpuEnergy::getWattsRangeList() xbt_dynar_t current_power_values; double min_power, max_power; - if (cpu->getProperties() == NULL) + if (host->getProperties() == NULL) return NULL; - char* all_power_values_str = (char*)xbt_dict_get_or_null(cpu->getProperties(), "power_per_state"); + char* all_power_values_str = (char*)xbt_dict_get_or_null(host->getProperties(), "watt_per_state"); if (all_power_values_str == NULL) return NULL; @@ -160,7 +256,7 @@ xbt_dynar_t CpuEnergy::getWattsRangeList() 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()); + host->getName()); /* min_power corresponds to the idle power (cpu load = 0) */ /* max_power is the power consumed at 100% cpu load */ @@ -177,3 +273,6 @@ xbt_dynar_t CpuEnergy::getWattsRangeList() xbt_dynar_free(&all_power_values); return power_range_list; } + +} +}