-/* Copyright (c) 2010, 2012-2016. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2010, 2012-2018. 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 "src/plugins/vm/VirtualMachineImpl.hpp"
#include "src/surf/cpu_interface.hpp"
+#include <boost/algorithm/string.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/split.hpp>
#include <simgrid/msg.h>
#include <string>
#include <utility>
#include <vector>
+#include <xbt/config.hpp>
/** @addtogroup SURF_plugin_load
}
}
- virtual void update() = 0;
+ virtual void update() {}
double samplingRate() { return sampling_rate; }
};
public:
static simgrid::xbt::Extension<simgrid::s4u::Host, HostDvfs> EXTENSION_ID;
- explicit HostDvfs(simgrid::s4u::Host* ptr);
+ explicit HostDvfs(simgrid::s4u::Host*);
~HostDvfs();
-
-private:
- simgrid::s4u::Host* host = nullptr;
};
simgrid::xbt::Extension<simgrid::s4u::Host, HostDvfs> HostDvfs::EXTENSION_ID;
-HostDvfs::HostDvfs(simgrid::s4u::Host* ptr) : host(ptr)
-{
-}
+HostDvfs::HostDvfs(simgrid::s4u::Host* ptr) {}
HostDvfs::~HostDvfs() = default;
}
using simgrid::plugin::HostDvfs;
/* **************************** events callback *************************** */
-static int check(int argc, char* argv[]);
-
static void on_host_added(simgrid::s4u::Host& host)
{
if (dynamic_cast<simgrid::s4u::VirtualMachine*>(&host)) // Ignore virtual machines
return;
- // host.extension_set(new HostDvfs(&host));
- // This call must be placed in this function. Otherweise, the daemonize() call comes too late and
- // SMPI will take this process as an MPI process!
- MSG_process_daemonize(MSG_process_create("daemon", check, NULL, &host));
-}
+ std::string name = std::string("dvfs-daemon-") + host.getCname();
+ simgrid::s4u::ActorPtr daemon = simgrid::s4u::Actor::createActor(name.c_str(), &host, []() {
+ /**
+ * This lambda function is the function the actor (daemon) will execute
+ * all the time - in the case of the dvfs plugin, this controls when to
+ * lower/raise the frequency.
+ */
+ simgrid::s4u::ActorPtr daemonProc = simgrid::s4u::Actor::self();
+
+ XBT_DEBUG("DVFS process on %s is a daemon: %d", daemonProc->getHost()->getName().c_str(), daemonProc->isDaemon());
+
+ std::string dvfs_governor;
+ const char* host_conf = daemonProc->getHost()->getProperty("plugin/dvfs/governor");
+ if (host_conf != nullptr) {
+ dvfs_governor = std::string(daemonProc->getHost()->getProperty("plugin/dvfs/governor"));
+ boost::algorithm::to_lower(dvfs_governor);
+ } else {
+ dvfs_governor = xbt_cfg_get_string("plugin/dvfs/governor");
+ boost::algorithm::to_lower(dvfs_governor);
+ }
-static int check(int argc, char* argv[])
-{
- msg_host_t host = MSG_host_self();
-
- int isDaemon = (MSG_process_self())->getImpl()->isDaemon();
- XBT_INFO("Bin ein Daemon: %d", isDaemon);
-
- simgrid::plugin::dvfs::Conservative governor(host);
- while (1) {
- // 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)
- MSG_process_sleep(governor.samplingRate());
- governor.update();
- XBT_INFO("Governor just updated!");
- }
+ simgrid::plugin::dvfs::Governor governor(daemonProc->getHost());
+ if (dvfs_governor == "conservative") {
+ governor = simgrid::plugin::dvfs::Conservative(daemonProc->getHost());
+ }
- // const char* dvfs_governor = host->property("plugin/dvfs/governor");
+ while (1) {
+ // 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)
+ simgrid::s4u::this_actor::sleep_for(governor.samplingRate());
+ governor.update();
+ XBT_INFO("Governor just updated!");
+ }
+
+ XBT_WARN("I should have never reached this point: daemons should be killed when all regular processes are done");
+ return 0;
+ });
- XBT_INFO("I will never reach that point: daemons are killed when regular processes are done");
- return 0;
+ // This call must be placed in this function. Otherweise, the daemonize() call comes too late and
+ // SMPI will take this process as an MPI process!
+ daemon->daemonize();
}
/* **************************** Public interface *************************** */
simgrid::s4u::Host::onCreation.connect(&on_host_added);
xbt_cfg_register_double("plugin/dvfs/sampling_rate", 0.1, nullptr,
"How often should the dvfs plugin check whether the frequency needs to be changed?");
+ xbt_cfg_register_string("plugin/dvfs/governor", "performance", nullptr,
+ "Which Governor should be used that adapts the CPU frequency?");
}
SG_END_DECL()
