X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/49e85177c669d793e84242983a1b1f430e47184e..4caf1eca81e75be76c2a1c4d3a15896845c58247:/src/surf/plugins/energy.cpp diff --git a/src/surf/plugins/energy.cpp b/src/surf/plugins/energy.cpp index 993ac0b7ed..702372318a 100644 --- a/src/surf/plugins/energy.cpp +++ b/src/surf/plugins/energy.cpp @@ -1,4 +1,4 @@ -/* 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 @@ -8,9 +8,42 @@ #include "../cpu_cas01.hpp" /** @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); @@ -23,34 +56,66 @@ static void energyCpuCreatedCallback(CpuPtr cpu){ (*surf_energy)[cpu] = new CpuEnergy(cpu); } +static void update_consumption_running(CpuPtr cpu, CpuEnergyPtr cpu_energy) { + 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(); + + double previous_energy = cpu_energy->total_energy; + double energy_this_step = cpu_energy->getCurrentWattsValue(cpu_load)*(finish_time-start_time); + + cpu_energy->total_energy = previous_energy + energy_this_step; + cpu_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, cpu->m_powerPeak, previous_energy, energy_this_step); +} +static void update_consumption_off(CpuPtr cpu, CpuEnergyPtr cpu_energy) { + double start_time = cpu_energy->last_updated; + double finish_time = surf_get_clock(); + + double previous_energy = cpu_energy->total_energy; + double energy_this_step = cpu_energy->watts_off*(finish_time-start_time); + + cpu_energy->total_energy = previous_energy + energy_this_step; + cpu_energy->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); +} + 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); + 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."); + + CpuEnergyPtr 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); + + 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); } -static void energyCpuActionStateChangedCallback(CpuActionPtr action){ +static void energyCpuActionStateChangedCallback(CpuActionPtr action, e_surf_action_state_t old, e_surf_action_state_t cur){ CpuPtr cpu = getActionCpu(action); CpuEnergyPtr cpu_energy = (*surf_energy)[cpu]; 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(); - - /*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); + update_consumption_running(cpu, cpu_energy); + } +} - cpu_energy->total_energy = current_energy + action_energy; - cpu_energy->last_updated = finish_time; +static void energyStateChangedCallback(CpuPtr cpu, e_surf_resource_state_t oldState, e_surf_resource_state_t newState){ + CpuEnergyPtr cpu_energy = (*surf_energy)[cpu]; - XBT_DEBUG("[cpu_update_energy] old_energy_value=%f, action_energy_value=%f", current_energy, action_energy); + 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); } } @@ -62,7 +127,7 @@ static void sg_energy_plugin_exit() /** \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) { @@ -71,6 +136,7 @@ void sg_energy_plugin_init() { surf_callback_connect(cpuDestructedCallbacks, energyCpuDestructedCallback); surf_callback_connect(cpuActionStateChangedCallbacks, energyCpuActionStateChangedCallback); surf_callback_connect(surfExitCallbacks, sg_energy_plugin_exit); + surf_callback_connect(cpuStateChangedCallbacks, energyStateChangedCallback); } } @@ -83,6 +149,15 @@ CpuEnergy::CpuEnergy(CpuPtr 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; + } + } CpuEnergy::~CpuEnergy(){ @@ -93,7 +168,6 @@ CpuEnergy::~CpuEnergy(){ xbt_dynar_free(&power_range_watts_list); } - /** * Computes the power consumed by the host according to the current pstate and processor load * @@ -130,6 +204,12 @@ double CpuEnergy::getCurrentWattsValue(double cpu_load) double CpuEnergy::getConsumedEnergy() { + 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; } @@ -144,7 +224,7 @@ xbt_dynar_t CpuEnergy::getWattsRangeList() if (cpu->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(cpu->getProperties(), "watt_per_state"); if (all_power_values_str == NULL) return NULL;