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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/actor.h"
#include "simgrid/engine.h"
#include "simgrid/host.h"
#include "simgrid/plugins/energy.h"
#include "simgrid/vm.h"
#include "xbt/asserts.h"
#include "xbt/log.h"
XBT_LOG_NEW_DEFAULT_CATEGORY(energy_vm, "Messages of this example");
static void worker_func(int argc, char* argv[])
{
sg_actor_execute(300E6);
XBT_INFO("This worker is done.");
}
static void dvfs(int argc, char* argv[])
{
sg_host_t host1 = sg_host_by_name("MyHost1");
sg_host_t host2 = sg_host_by_name("MyHost2");
sg_host_t host3 = sg_host_by_name("MyHost3");
/* Host 1 */
XBT_INFO("Creating and starting two VMs");
sg_vm_t vm_host1 = sg_vm_create_core(host1, "vm_host1");
sg_vm_start(vm_host1);
sg_vm_t vm_host2 = sg_vm_create_core(host2, "vm_host2");
sg_vm_start(vm_host2);
XBT_INFO("Create two tasks on Host1: both inside a VM");
sg_actor_create("p11", (sg_host_t)vm_host1, &worker_func, 0, NULL);
sg_actor_create("p12", (sg_host_t)vm_host1, &worker_func, 0, NULL);
XBT_INFO("Create two tasks on Host2: one inside a VM, the other directly on the host");
sg_actor_create("p21", (sg_host_t)vm_host2, &worker_func, 0, NULL);
sg_actor_create("p22", host2, &worker_func, 0, NULL);
XBT_INFO("Create two tasks on Host3: both directly on the host");
sg_actor_create("p31", host3, &worker_func, 0, NULL);
sg_actor_create("p32", host3, &worker_func, 0, NULL);
XBT_INFO("Wait 5 seconds. The tasks are still running (they run for 3 seconds, but 2 tasks are co-located, "
"so they run for 6 seconds)");
sg_actor_sleep_for(5);
XBT_INFO("Wait another 5 seconds. The tasks stop at some point in between");
sg_actor_sleep_for(5);
sg_vm_destroy(vm_host1);
sg_vm_destroy(vm_host2);
}
int main(int argc, char* argv[])
{
sg_host_energy_plugin_init();
simgrid_init(&argc, argv);
xbt_assert(argc > 1, "Usage: %s platform_file\n\tExample: %s platform.xml\n", argv[0], argv[0]);
simgrid_load_platform(argv[1]);
sg_actor_create("dvfs", sg_host_by_name("MyHost1"), &dvfs, 0, NULL);
simgrid_run();
XBT_INFO("Total simulation time: %.2f; Host2 and Host3 must have the exact same energy consumption; Host1 is "
"multi-core and will differ.",
simgrid_get_clock());
return 0;
}
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