X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/397fc830a6a13c81f7d4b2730d76b60eaed420ee..b372d23d3d8818b4547ef207f43b45709298a002:/src/plugins/host_dvfs.cpp diff --git a/src/plugins/host_dvfs.cpp b/src/plugins/host_dvfs.cpp index 4cb1f04cf1..4378b2b5ee 100644 --- a/src/plugins/host_dvfs.cpp +++ b/src/plugins/host_dvfs.cpp @@ -1,4 +1,4 @@ -/* Copyright (c) 2010-2018. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2010-2020. 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. */ @@ -6,40 +6,54 @@ #include "simgrid/plugins/dvfs.h" #include "simgrid/plugins/load.h" #include "simgrid/s4u/Engine.hpp" +#include "src/internal_config.h" // HAVE_SMPI #include "src/kernel/activity/ExecImpl.hpp" #include "src/plugins/vm/VirtualMachineImpl.hpp" +#if HAVE_SMPI #include "src/smpi/plugins/ampi/ampi.hpp" +#endif #include #include +#if HAVE_SMPI +#include "src/smpi/include/smpi_request.hpp" +#endif SIMGRID_REGISTER_PLUGIN(host_dvfs, "Dvfs support", &sg_host_dvfs_plugin_init) -static simgrid::config::Flag cfg_sampling_rate("plugin/dvfs/sampling-rate", {"plugin/dvfs/sampling_rate"}, - "How often should the dvfs plugin check whether the frequency needs to be changed?", 0.1, - [](double val){if (val != 0.1) sg_host_dvfs_plugin_init();}); +static simgrid::config::Flag + cfg_sampling_rate("plugin/dvfs/sampling-rate", + "How often should the dvfs plugin check whether the frequency needs to be changed?", 0.1, + [](double val) { + if (val != 0.1) + sg_host_dvfs_plugin_init(); + }); static simgrid::config::Flag cfg_governor("plugin/dvfs/governor", - "Which Governor should be used that adapts the CPU frequency?", "performance", - - std::map({ - {"adagio", "TODO: Doc"}, - {"conservative", "TODO: Doc"}, - {"ondemand", "TODO: Doc"}, - {"performance", "TODO: Doc"}, - {"powersave", "TODO: Doc"}, - }), - - [](std::string val) { if (val != "performance") sg_host_dvfs_plugin_init(); }); - -static simgrid::config::Flag cfg_min_pstate("plugin/dvfs/min-pstate", {"plugin/dvfs/min_pstate"}, - "Which pstate is the minimum (and hence fastest) pstate for this governor?", 0, - [](int index) {}); + "Which Governor should be used that adapts the CPU frequency?", + "performance", + + std::map>({ +#if HAVE_SMPI + {"adagio", "TODO: Doc"}, +#endif + {"conservative", "TODO: Doc"}, {"ondemand", "TODO: Doc"}, + {"performance", "TODO: Doc"}, {"powersave", "TODO: Doc"}, + }), + + [](const std::string& val) { + if (val != "performance") + sg_host_dvfs_plugin_init(); + }); + +static simgrid::config::Flag + cfg_min_pstate("plugin/dvfs/min-pstate", + "Which pstate is the minimum (and hence fastest) pstate for this governor?", 0); static const int max_pstate_not_limited = -1; -static simgrid::config::Flag cfg_max_pstate("plugin/dvfs/max-pstate", {"plugin/dvfs/max_pstate"}, - "Which pstate is the maximum (and hence slowest) pstate for this governor?", max_pstate_not_limited, - [](int index) {}); +static simgrid::config::Flag + cfg_max_pstate("plugin/dvfs/max-pstate", + "Which pstate is the maximum (and hence slowest) pstate for this governor?", max_pstate_not_limited); /** @addtogroup SURF_plugin_load @@ -73,19 +87,17 @@ namespace dvfs { * global configuration */ class Governor { - -private: simgrid::s4u::Host* const host_; double sampling_rate_; - int min_pstate; //< Never use a pstate less than this one - int max_pstate; //< Never use a pstate larger than this one + int min_pstate = cfg_min_pstate; //< Never use a pstate less than this one + int max_pstate = cfg_max_pstate; //< Never use a pstate larger than this one public: explicit Governor(simgrid::s4u::Host* ptr) : host_(ptr) - , min_pstate(cfg_min_pstate) - , max_pstate(cfg_max_pstate == max_pstate_not_limited ? host_->get_pstate_count() - 1 : cfg_max_pstate) { + if (cfg_max_pstate == max_pstate_not_limited) + max_pstate = host_->get_pstate_count() - 1; init(); } virtual ~Governor() = default; @@ -132,7 +144,7 @@ public: */ class Performance : public Governor { public: - explicit Performance(simgrid::s4u::Host* ptr) : Governor(ptr) {} + using Governor::Governor; std::string get_name() const override { return "Performance"; } void update() override { get_host()->set_pstate(get_min_pstate()); } @@ -150,7 +162,7 @@ public: */ class Powersave : public Governor { public: - explicit Powersave(simgrid::s4u::Host* ptr) : Governor(ptr) {} + using Governor::Governor; std::string get_name() const override { return "Powersave"; } void update() override { get_host()->set_pstate(get_max_pstate()); } @@ -173,7 +185,7 @@ class OnDemand : public Governor { double freq_up_threshold_ = 0.80; public: - explicit OnDemand(simgrid::s4u::Host* ptr) : Governor(ptr) {} + using Governor::Governor; std::string get_name() const override { return "OnDemand"; } void update() override @@ -211,9 +223,9 @@ public: * * > The CPUfreq governor "conservative", much like the "ondemand" * > governor, sets the CPU frequency depending on the current usage. It - * > differs in behaviour in that it gracefully increases and decreases the + * > differs in behavior in that it gracefully increases and decreases the * > CPU speed rather than jumping to max speed the moment there is any load - * > on the CPU. This behaviour is more suitable in a battery powered + * > on the CPU. This behavior is more suitable in a battery powered * > environment. */ class Conservative : public Governor { @@ -221,10 +233,10 @@ class Conservative : public Governor { double freq_down_threshold_ = .2; public: - explicit Conservative(simgrid::s4u::Host* ptr) : Governor(ptr) {} - virtual std::string get_name() const override { return "Conservative"; } + using Governor::Governor; + std::string get_name() const override { return "Conservative"; } - virtual void update() override + void update() override { double load = get_host()->get_core_count() * sg_host_get_avg_load(get_host()); int pstate = get_host()->get_pstate(); @@ -251,6 +263,7 @@ public: } }; +#if HAVE_SMPI class Adagio : public Governor { private: int best_pstate = 0; @@ -258,7 +271,7 @@ private: double comp_counter = 0; double comp_timer = 0; - std::vector> rates; + std::vector> rates; // Each host + all frequencies of that host unsigned int task_id = 0; bool iteration_running = false; /*< Are we currently between iteration_in and iteration_out calls? */ @@ -267,41 +280,42 @@ public: explicit Adagio(simgrid::s4u::Host* ptr) : Governor(ptr), rates(100, std::vector(ptr->get_pstate_count(), 0.0)) { - simgrid::smpi::plugin::ampi::on_iteration_in.connect([this](simgrid::s4u::ActorPtr actor) { + simgrid::smpi::plugin::ampi::on_iteration_in.connect([this](simgrid::s4u::Actor const& actor) { // Every instance of this class subscribes to this event, so one per host // This means that for any actor, all 'hosts' are normally notified of these // changes, even those who don't currently run the actor 'proc_id'. // -> Let's check if this signal call is for us! - if (get_host() == actor->get_host()) { + if (get_host() == actor.get_host()) { iteration_running = true; } }); - simgrid::smpi::plugin::ampi::on_iteration_out.connect([this](simgrid::s4u::ActorPtr actor) { - if (get_host() == actor->get_host()) { + simgrid::smpi::plugin::ampi::on_iteration_out.connect([this](simgrid::s4u::Actor const& actor) { + if (get_host() == actor.get_host()) { iteration_running = false; task_id = 0; } }); - simgrid::kernel::activity::ExecImpl::on_creation.connect([this](simgrid::kernel::activity::ExecImplPtr activity) { - if (activity->host_ == get_host()) + simgrid::s4u::Exec::on_start.connect([this](simgrid::s4u::Exec const& activity) { + if (activity.get_host() == get_host()) pre_task(); }); - simgrid::kernel::activity::ExecImpl::on_completion.connect([this](simgrid::kernel::activity::ExecImplPtr activity) { + simgrid::s4u::Exec::on_completion.connect([this](simgrid::s4u::Exec const& activity) { // For more than one host (not yet supported), we can access the host via - // simcalls_.front()->issuer->iface()->get_host() - if (activity->host_ == get_host() && iteration_running) { - comp_timer += activity->surf_action_->get_finish_time() - activity->surf_action_->get_start_time(); + // simcalls_.front()->issuer->get_iface()->get_host() + if (activity.get_host() == get_host() && iteration_running) { + comp_timer += activity.get_finish_time() - activity.get_start_time(); + } + }); + // FIXME I think that this fires at the same time for all hosts, so when the src sends something, + // the dst will be notified even though it didn't even arrive at the recv yet + simgrid::s4u::Link::on_communicate.connect([this](const kernel::resource::NetworkAction& act) { + if ((get_host() == &act.get_src() || get_host() == &act.get_dst()) && iteration_running) { + post_task(); } }); - simgrid::s4u::Link::on_communicate.connect( - [this](kernel::resource::NetworkAction* action, s4u::Host* src, s4u::Host* dst) { - if ((get_host() == src || get_host() == dst) && iteration_running) { - post_task(); - } - }); } - virtual std::string get_name() const override { return "Adagio"; } + std::string get_name() const override { return "Adagio"; } void pre_task() { @@ -321,9 +335,8 @@ public: { double computed_flops = sg_host_get_computed_flops(get_host()) - comp_counter; double target_time = (simgrid::s4u::Engine::get_clock() - start_time); - target_time = - target_time * - static_cast(99.0 / 100.0); // FIXME We account for t_copy arbitrarily with 1% -- this needs to be fixed + target_time = target_time * 99.0 / 100.0; // FIXME We account for t_copy arbitrarily with 1% + // -- this needs to be fixed bool is_initialized = rates[task_id][best_pstate] != 0; rates[task_id][best_pstate] = computed_flops / comp_timer; @@ -331,7 +344,6 @@ public: for (int i = 1; i < get_host()->get_pstate_count(); i++) { rates[task_id][i] = rates[task_id][0] * (get_host()->get_pstate_speed(i) / get_host()->get_speed()); } - is_initialized = true; } for (int pstate = get_host()->get_pstate_count() - 1; pstate >= 0; pstate--) { @@ -344,8 +356,9 @@ public: task_id++; } - virtual void update() override {} + void update() override {} }; +#endif } // namespace dvfs } // namespace plugin } // namespace simgrid @@ -377,31 +390,29 @@ static void on_host_added(simgrid::s4u::Host& host) boost::algorithm::to_lower(dvfs_governor); } - auto governor = [&dvfs_governor, &daemon_proc]() { + auto governor = [&dvfs_governor, &daemon_proc]() -> std::unique_ptr { if (dvfs_governor == "conservative") { - return std::unique_ptr( - new simgrid::plugin::dvfs::Conservative(daemon_proc->get_host())); + return std::make_unique(daemon_proc->get_host()); } else if (dvfs_governor == "ondemand") { - return std::unique_ptr( - new simgrid::plugin::dvfs::OnDemand(daemon_proc->get_host())); - } else if (dvfs_governor == "adagio") { - return std::unique_ptr( - new simgrid::plugin::dvfs::Adagio(daemon_proc->get_host())); - } else if (dvfs_governor == "performance") { - return std::unique_ptr( - new simgrid::plugin::dvfs::Performance(daemon_proc->get_host())); + return std::make_unique(daemon_proc->get_host()); + } +#if HAVE_SMPI + else if (dvfs_governor == "adagio") { + return std::make_unique(daemon_proc->get_host()); + } +#endif + else if (dvfs_governor == "performance") { + return std::make_unique(daemon_proc->get_host()); } else if (dvfs_governor == "powersave") { - return std::unique_ptr( - new simgrid::plugin::dvfs::Powersave(daemon_proc->get_host())); + return std::make_unique(daemon_proc->get_host()); } else { XBT_CRITICAL("No governor specified for host %s, falling back to Performance", daemon_proc->get_host()->get_cname()); - return std::unique_ptr( - new simgrid::plugin::dvfs::Performance(daemon_proc->get_host())); + return std::make_unique(daemon_proc->get_host()); } }(); - while (1) { + while (true) { // Sleep *before* updating; important for startup (i.e., t = 0). // In the beginning, we want to go with the pstates specified in the platform file // (so we sleep first) @@ -421,7 +432,7 @@ static void on_host_added(simgrid::s4u::Host& host) /* **************************** Public interface *************************** */ -/** @ingroup SURF_plugin_load +/** * @brief Initializes the HostDvfs plugin * @details The HostDvfs plugin provides an API to get the current load of each host. */