-/* Copyright (c) 2007-2010, 2013-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2007-2018. 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. */
{
s4u_Host* host = simgrid::s4u::Host::by_name("MyHost1");
- XBT_INFO("Initial peak speed: %.0E flop/s; number of flops computed so far: %.0E (should be 0)", host->getSpeed(),
- sg_host_get_computed_flops(host));
+ XBT_INFO("Initial peak speed: %.0E flop/s; number of flops computed so far: %.0E (should be 0) and current average load: %.5f (should be 0)", host->getSpeed(),
+ sg_host_get_computed_flops(host), sg_host_get_avg_load(host));
- double start = simgrid::s4u::Engine::getClock();
+ double start = simgrid::s4u::Engine::get_clock();
XBT_INFO("Sleep for 10 seconds");
simgrid::s4u::this_actor::sleep_for(10);
+ double speed = host->getSpeed();
XBT_INFO("Done sleeping %.2fs; peak speed: %.0E flop/s; number of flops computed so far: %.0E (nothing should have "
"changed)",
- simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+ simgrid::s4u::Engine::get_clock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
// Run a task
- start = simgrid::s4u::Engine::getClock();
- XBT_INFO("Run a task of %.0E flops", 100E6);
- simgrid::s4u::this_actor::execute(100E6);
-
- XBT_INFO("Done working on my task; this took %.2fs; current peak speed: %.0E flop/s; number of flops computed so "
- "far: %.0E",
- simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+ start = simgrid::s4u::Engine::get_clock();
+ XBT_INFO("Run a task of %.0E flops at current speed of %.0E flop/s", 200E6, host->getSpeed());
+ simgrid::s4u::this_actor::execute(200E6);
+
+ XBT_INFO("Done working on my task; this took %.2fs; current peak speed: %.0E flop/s (when I started the computation, "
+ "the speed was set to %.0E flop/s); number of flops computed so "
+ "far: %.2E, average load as reported by the HostLoad plugin: %.5f (should be %.5f)",
+ simgrid::s4u::Engine::get_clock() - start, host->getSpeed(), speed, sg_host_get_computed_flops(host),
+ sg_host_get_avg_load(host),
+ static_cast<double>(200E6) /
+ (10.5 * speed * host->get_core_count() +
+ (simgrid::s4u::Engine::get_clock() - start - 0.5) * host->getSpeed() * host->get_core_count()));
// ========= Change power peak =========
- int pstate = 2;
- host->setPstate(pstate);
- XBT_INFO("========= Requesting pstate %d (speed should be of %.0E flop/s and is of %.0E flop/s)", pstate,
- host->getPstateSpeed(pstate), host->getSpeed());
+ int pstate = 1;
+ host->set_pstate(pstate);
+ XBT_INFO("========= Requesting pstate %d (speed should be of %.0E flop/s and is of %.0E flop/s, average load is %.5f)", pstate,
+ host->getPstateSpeed(pstate), host->getSpeed(), sg_host_get_avg_load(host));
// Run a second task
- start = simgrid::s4u::Engine::getClock();
+ start = simgrid::s4u::Engine::get_clock();
XBT_INFO("Run a task of %.0E flops", 100E6);
simgrid::s4u::this_actor::execute(100E6);
XBT_INFO("Done working on my task; this took %.2fs; current peak speed: %.0E flop/s; number of flops computed so "
- "far: %.0E",
- simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+ "far: %.2E",
+ simgrid::s4u::Engine::get_clock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
- start = simgrid::s4u::Engine::getClock();
- XBT_INFO("========= Requesting a reset of the computation counter");
+ start = simgrid::s4u::Engine::get_clock();
+ XBT_INFO("========= Requesting a reset of the computation and load counters");
sg_host_load_reset(host);
+ XBT_INFO("After reset: %.0E flops computed; load is %.5f", sg_host_get_computed_flops(host), sg_host_get_avg_load(host));
XBT_INFO("Sleep for 4 seconds");
simgrid::s4u::this_actor::sleep_for(4);
XBT_INFO("Done sleeping %.2f s; peak speed: %.0E flop/s; number of flops computed so far: %.0E",
- simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+ simgrid::s4u::Engine::get_clock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
// =========== Turn the other host off ==========
s4u_Host* host2 = simgrid::s4u::Host::by_name("MyHost2");
- XBT_INFO("Turning MyHost2 off, and sleeping another 10 seconds. MyHost2 computed %.0f flops so far.",
- sg_host_get_computed_flops(host2));
- host2->turnOff();
- start = simgrid::s4u::Engine::getClock();
+ XBT_INFO("Turning MyHost2 off, and sleeping another 10 seconds. MyHost2 computed %.0f flops so far and has an average load of %.5f.",
+ sg_host_get_computed_flops(host2), sg_host_get_avg_load(host2));
+ host2->turn_off();
+ start = simgrid::s4u::Engine::get_clock();
simgrid::s4u::this_actor::sleep_for(10);
XBT_INFO("Done sleeping %.2f s; peak speed: %.0E flop/s; number of flops computed so far: %.0E",
- simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+ simgrid::s4u::Engine::get_clock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+}
+
+static void change_speed()
+{
+ s4u_Host* host = simgrid::s4u::Host::by_name("MyHost1");
+ simgrid::s4u::this_actor::sleep_for(10.5);
+ XBT_INFO("I slept until now, but now I'll change the speed of this host "
+ "while the other process is still computing! This should slow the computation down.");
+ host->set_pstate(2);
}
int main(int argc, char* argv[])
{
sg_host_load_plugin_init();
- simgrid::s4u::Engine* e = new simgrid::s4u::Engine(&argc, argv);
+ simgrid::s4u::Engine e(&argc, argv);
xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s msg_platform.xml\n", argv[0], argv[0]);
- e->loadPlatform(argv[1]);
+ e.load_platform(argv[1]);
- simgrid::s4u::Actor::createActor("load_test", simgrid::s4u::Host::by_name("MyHost1"), execute_load_test);
+ simgrid::s4u::Actor::create("load_test", simgrid::s4u::Host::by_name("MyHost1"), execute_load_test);
+ simgrid::s4u::Actor::create("change_speed", simgrid::s4u::Host::by_name("MyHost1"), change_speed);
- e->run();
+ e.run();
- XBT_INFO("Total simulation time: %.2f", simgrid::s4u::Engine::getClock());
+ XBT_INFO("Total simulation time: %.2f", simgrid::s4u::Engine::get_clock());
- delete e;
return 0;
}
