X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/02ea6400fac5265cad1af98d468964d444fc82cb..18bee871381a6ce670d9da211f43ab9b55fdc350:/src/surf/plugins/energy.cpp diff --git a/src/surf/plugins/energy.cpp b/src/surf/plugins/energy.cpp index 3d7c8a8533..b1b51c9c54 100644 --- a/src/surf/plugins/energy.cpp +++ b/src/surf/plugins/energy.cpp @@ -1,16 +1,14 @@ -/* Copyright (c) 2010, 2012-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2010, 2012-2016. 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 - #include "simgrid/plugins/energy.h" #include "simgrid/simix.hpp" -#include "src/surf/plugins/energy.hpp" +#include "src/plugins/vm/VirtualMachineImpl.hpp" #include "src/surf/cpu_interface.hpp" -#include "src/surf/virtual_machine.hpp" +#include "src/surf/plugins/energy.hpp" +#include /** @addtogroup SURF_plugin_energy @@ -66,19 +64,18 @@ simgrid::xbt::Extension HostEnergy::EXTENSION_ID /* Computes the consumption so far. Called lazily on need. */ void HostEnergy::update() { - simgrid::surf::HostImpl* surf_host = host->extension(); double start_time = this->last_updated; double finish_time = surf_get_clock(); double cpu_load; - if (surf_host->cpu_->getPstateSpeedCurrent() <= 0) + if (host->pimpl_cpu->getPstateSpeedCurrent() <= 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(surf_host->cpu_->getConstraint()) / surf_host->cpu_->getPstateSpeedCurrent(); + cpu_load = lmm_constraint_get_usage(host->pimpl_cpu->getConstraint()) / host->pimpl_cpu->getPstateSpeedCurrent(); /** Divide by the number of cores here **/ - cpu_load /= surf_host->cpu_->getCoreCount(); + cpu_load /= host->pimpl_cpu->coreCount(); if (cpu_load > 1) // A machine with a load > 1 consumes as much as a fully loaded machine, not more cpu_load = 1; @@ -104,8 +101,9 @@ void HostEnergy::update() this->total_energy = previous_energy + energy_this_step; this->last_updated = finish_time; - 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->cpu_->speed_.peak, 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", + host->cname(), start_time, finish_time, host->pimpl_cpu->speed_.peak, previous_energy, energy_this_step); } HostEnergy::HostEnergy(simgrid::s4u::Host *ptr) : host(ptr), last_updated(surf_get_clock()) @@ -115,7 +113,7 @@ HostEnergy::HostEnergy(simgrid::s4u::Host *ptr) : host(ptr), last_updated(surf_g if (host->properties() != nullptr) { char* off_power_str = (char*)xbt_dict_get_or_null(host->properties(), "watt_off"); if (off_power_str != nullptr) { - char *msg = bprintf("Invalid value for property watt_off of host %s: %%s",host->name().c_str()); + char* msg = bprintf("Invalid value for property watt_off of host %s: %%s", host->cname()); watts_off = xbt_str_parse_double(off_power_str, msg); xbt_free(msg); } @@ -128,20 +126,20 @@ HostEnergy::~HostEnergy()=default; double HostEnergy::getWattMinAt(int pstate) { - xbt_assert(!power_range_watts_list.empty(), "No power range properties specified for host %s", host->name().c_str()); + xbt_assert(!power_range_watts_list.empty(), "No power range properties specified for host %s", host->cname()); return power_range_watts_list[pstate].min; } double HostEnergy::getWattMaxAt(int pstate) { - xbt_assert(!power_range_watts_list.empty(), "No power range properties specified for host %s", host->name().c_str()); + xbt_assert(!power_range_watts_list.empty(), "No power range properties specified for host %s", host->cname()); return power_range_watts_list[pstate].max; } /** @brief Computes the power consumed by the host according to the current pstate and processor load */ double HostEnergy::getCurrentWattsValue(double cpu_load) { - xbt_assert(!power_range_watts_list.empty(), "No power range properties specified for host %s", host->name().c_str()); + xbt_assert(!power_range_watts_list.empty(), "No power range properties specified for host %s", host->cname()); /* min_power corresponds to the idle power (cpu load = 0) */ /* max_power is the power consumed at 100% cpu load */ @@ -151,11 +149,29 @@ double HostEnergy::getCurrentWattsValue(double cpu_load) double max_power = 0; double power_slope = 0; - if (cpu_load != 0) { /* Something is going on, the machine is not idle */ + if (cpu_load > 0) { /* Something is going on, the machine is not idle */ double min_power = range.min; double max_power = range.max; - double power_slope = max_power - min_power; - current_power = min_power + cpu_load * power_slope; + + /** + * The min_power states how much we consume when only one single + * core is working. This means that when cpu_load == 1/coreCount, then + * current_power == min_power. + * + * The maximum must be reached when all cores are working (but 1 core was + * already accounted for by min_power) + * i.e., we need min_power + (maxCpuLoad-1/coreCount)*power_slope == max_power + * (maxCpuLoad is by definition 1) + */ + double power_slope; + int coreCount = host->coreCount(); + double coreReciprocal = static_cast(1) / static_cast(coreCount); + if (coreCount > 1) + power_slope = (max_power - min_power) / (1 - coreReciprocal); + else + power_slope = 0; // Should be 0, since max_power == min_power (in this case) + + current_power = min_power + (cpu_load - coreReciprocal) * power_slope; } else { /* Our machine is idle, take the dedicated value! */ current_power = range.idle; @@ -189,21 +205,22 @@ void HostEnergy::initWattsRangeList() 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->name().c_str()); + xbt_assert(xbt_dynar_length(current_power_values) == 3, + "Power properties incorrectly defined - could not retrieve idle, min and max power values for host %s", + host->cname()); /* min_power corresponds to the idle power (cpu load = 0) */ /* max_power is the power consumed at 100% cpu load */ - char *msg_idle = bprintf("Invalid idle value for pstate %d on host %s: %%s", i, host->name().c_str()); - char *msg_min = bprintf("Invalid min value for pstate %d on host %s: %%s", i, host->name().c_str()); - char *msg_max = bprintf("Invalid max value for pstate %d on host %s: %%s", i, host->name().c_str()); + char* msg_idle = bprintf("Invalid idle value for pstate %d on host %s: %%s", i, host->cname()); + char* msg_min = bprintf("Invalid min value for pstate %d on host %s: %%s", i, host->cname()); + char* msg_max = bprintf("Invalid max value for pstate %d on host %s: %%s", i, host->cname()); PowerRange range( xbt_str_parse_double(xbt_dynar_get_as(current_power_values, 0, char*), msg_idle), xbt_str_parse_double(xbt_dynar_get_as(current_power_values, 1, char*), msg_min), xbt_str_parse_double(xbt_dynar_get_as(current_power_values, 2, char*), msg_max) ); power_range_watts_list.push_back(range); + xbt_free(msg_idle); xbt_free(msg_min); xbt_free(msg_max); @@ -217,8 +234,7 @@ void HostEnergy::initWattsRangeList() /* **************************** events callback *************************** */ static void onCreation(simgrid::s4u::Host& host) { - simgrid::surf::HostImpl* surf_host = host.extension(); - if (dynamic_cast(surf_host)) // Ignore virtual machines + if (dynamic_cast(&host)) // Ignore virtual machines return; host.extension_set(new HostEnergy(&host)); } @@ -229,10 +245,10 @@ static void onActionStateChange(simgrid::surf::CpuAction *action, simgrid::surf: sg_host_t sghost = sg_host_by_name(name); if(sghost == nullptr) continue; - simgrid::surf::HostImpl *host = sghost->extension(); - simgrid::surf::VirtualMachine *vm = dynamic_cast(host); + simgrid::surf::HostImpl* host = sghost->pimpl_; + simgrid::s4u::VirtualMachine* vm = dynamic_cast(sghost); if (vm) // If it's a VM, take the corresponding PM - host = vm->getPm()->extension(); + host = vm->pimpl_vm_->getPm()->pimpl_; HostEnergy *host_energy = host->piface_->extension(); @@ -242,8 +258,7 @@ static void onActionStateChange(simgrid::surf::CpuAction *action, simgrid::surf: } static void onHostStateChange(simgrid::s4u::Host &host) { - simgrid::surf::HostImpl* surf_host = host.extension(); - if (dynamic_cast(surf_host)) // Ignore virtual machines + if (dynamic_cast(&host)) // Ignore virtual machines return; HostEnergy *host_energy = host.extension(); @@ -254,12 +269,11 @@ static void onHostStateChange(simgrid::s4u::Host &host) { static void onHostDestruction(simgrid::s4u::Host& host) { // Ignore virtual machines - simgrid::surf::HostImpl* surf_host = host.extension(); - if (dynamic_cast(surf_host)) + if (dynamic_cast(&host)) return; HostEnergy *host_energy = host.extension(); host_energy->update(); - XBT_INFO("Total energy of host %s: %f Joules", host.name().c_str(), host_energy->getConsumedEnergy()); + XBT_INFO("Total energy of host %s: %f Joules", host.cname(), host_energy->getConsumedEnergy()); } /* **************************** Public interface *************************** */