-/* 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. */
#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 <xbt/config.hpp>
#include <boost/algorithm/string.hpp>
+#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<double> 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<double>
+ 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<std::string> cfg_governor("plugin/dvfs/governor",
- "Which Governor should be used that adapts the CPU frequency?", "performance",
-
- std::map<std::string, std::string>({
- {"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<int> 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<std::string, std::string, std::less<>>({
+#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<int>
+ 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<int> 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<int>
+ 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
* 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;
*/
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()); }
*/
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()); }
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
*
* > 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 {
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();
}
};
+#if HAVE_SMPI
class Adagio : public Governor {
private:
int best_pstate = 0;
double comp_counter = 0;
double comp_timer = 0;
- std::vector<std::vector<double>> rates;
+ std::vector<std::vector<double>> 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? */
explicit Adagio(simgrid::s4u::Host* ptr)
: Governor(ptr), rates(100, std::vector<double>(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()
{
{
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<double>(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;
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--) {
task_id++;
}
- virtual void update() override {}
+ void update() override {}
};
+#endif
} // namespace dvfs
} // namespace plugin
} // namespace simgrid
boost::algorithm::to_lower(dvfs_governor);
}
- auto governor = [&dvfs_governor, &daemon_proc]() {
+ auto governor = [&dvfs_governor, &daemon_proc]() -> std::unique_ptr<simgrid::plugin::dvfs::Governor> {
if (dvfs_governor == "conservative") {
- return std::unique_ptr<simgrid::plugin::dvfs::Governor>(
- new simgrid::plugin::dvfs::Conservative(daemon_proc->get_host()));
+ return std::make_unique<simgrid::plugin::dvfs::Conservative>(daemon_proc->get_host());
} else if (dvfs_governor == "ondemand") {
- return std::unique_ptr<simgrid::plugin::dvfs::Governor>(
- new simgrid::plugin::dvfs::OnDemand(daemon_proc->get_host()));
- } else if (dvfs_governor == "adagio") {
- return std::unique_ptr<simgrid::plugin::dvfs::Governor>(
- new simgrid::plugin::dvfs::Adagio(daemon_proc->get_host()));
- } else if (dvfs_governor == "performance") {
- return std::unique_ptr<simgrid::plugin::dvfs::Governor>(
- new simgrid::plugin::dvfs::Performance(daemon_proc->get_host()));
+ return std::make_unique<simgrid::plugin::dvfs::OnDemand>(daemon_proc->get_host());
+ }
+#if HAVE_SMPI
+ else if (dvfs_governor == "adagio") {
+ return std::make_unique<simgrid::plugin::dvfs::Adagio>(daemon_proc->get_host());
+ }
+#endif
+ else if (dvfs_governor == "performance") {
+ return std::make_unique<simgrid::plugin::dvfs::Performance>(daemon_proc->get_host());
} else if (dvfs_governor == "powersave") {
- return std::unique_ptr<simgrid::plugin::dvfs::Governor>(
- new simgrid::plugin::dvfs::Powersave(daemon_proc->get_host()));
+ return std::make_unique<simgrid::plugin::dvfs::Powersave>(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<simgrid::plugin::dvfs::Governor>(
- new simgrid::plugin::dvfs::Performance(daemon_proc->get_host()));
+ return std::make_unique<simgrid::plugin::dvfs::Performance>(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)
/* **************************** 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.
*/
