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/* Copyright (c) 2007-2025. 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/s4u.hpp"
#include "simgrid/plugins/energy.h"
#include "simgrid/s4u/VirtualMachine.hpp"
XBT_LOG_NEW_DEFAULT_CATEGORY(energy_vm, "Messages of this example");
namespace sg4 = simgrid::s4u;
static void executor()
{
sg4::this_actor::execute(300E6);
XBT_INFO("This worker is done.");
}
static void dvfs()
{
sg4::Engine& e = *sg4::this_actor::get_engine();
sg4::Host* host1 = sg4::Host::by_name("MyHost1");
sg4::Host* host2 = sg4::Host::by_name("MyHost2");
sg4::Host* host3 = sg4::Host::by_name("MyHost3");
/* Host 1 */
XBT_INFO("Creating and starting two VMs");
auto* vm_host1 = host1->create_vm("vm_host1", 1);
vm_host1->start();
auto* vm_host2 = host2->create_vm("vm_host2", 1);
vm_host2->start();
XBT_INFO("Create two activities on Host1: both inside a VM");
e.add_actor("p11", vm_host1, executor);
e.add_actor("p12", vm_host1, executor);
XBT_INFO("Create two activities on Host2: one inside a VM, the other directly on the host");
e.add_actor("p21", vm_host2, executor);
e.add_actor("p22", host2, executor);
XBT_INFO("Create two activities on Host3: both directly on the host");
e.add_actor("p31", host3, executor);
e.add_actor("p32", host3, executor);
XBT_INFO("Wait 5 seconds. The activities are still running (they run for 3 seconds, but 2 activities are co-located, "
"so they run for 6 seconds)");
sg4::this_actor::sleep_for(5);
XBT_INFO("Wait another 5 seconds. The activities stop at some point in between");
sg4::this_actor::sleep_for(5);
vm_host1->destroy();
vm_host2->destroy();
}
int main(int argc, char* argv[])
{
sg_host_energy_plugin_init();
sg4::Engine e(&argc, argv);
xbt_assert(argc > 1, "Usage: %s platform_file\n\tExample: %s ../platforms/energy_platform.xml\n", argv[0], argv[0]);
e.load_platform(argv[1]);
e.add_actor("dvfs", e.host_by_name("MyHost1"), dvfs);
e.run();
XBT_INFO("Total simulation time: %.2f; Host2 and Host3 must have the exact same energy consumption; Host1 is "
"multi-core and will differ.",
sg4::Engine::get_clock());
return 0;
}
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