static int execute_load_test(int argc, char* argv[])
{
msg_host_t host = MSG_host_by_name("MyHost1");
XBT_INFO("Initial peak speed: %.0E flop/s; number of flops computed so far: %.0E (should be 0)",
MSG_host_get_speed(host), sg_host_get_computed_flops(host));
double start = MSG_get_clock();
XBT_INFO("Sleep for 10 seconds");
MSG_process_sleep(10);
XBT_INFO("Done sleeping %.2fs; peak speed: %.0E flop/s; number of flops computed so far: %.0E (nothing should have "
"changed)",
MSG_get_clock() - start, MSG_host_get_speed(host), sg_host_get_computed_flops(host));
// Run a task
start = MSG_get_clock();
msg_task_t task1 = MSG_task_create("t1", 100E6, 0, NULL);
XBT_INFO("Run a task of %.0E flops", MSG_task_get_flops_amount(task1));
MSG_task_execute(task1);
MSG_task_destroy(task1);
XBT_INFO("Done working on my task; this took %.2fs; current peak speed: %.0E flop/s; number of flops computed so "
"far: %.0E",
MSG_get_clock() - start, MSG_host_get_speed(host), sg_host_get_computed_flops(host));
// ========= Change power peak =========
int pstate = 2;
sg_host_set_pstate(host, pstate);
XBT_INFO("========= Requesting pstate %d (speed should be of %.0E flop/s and is of %.0E flop/s)", pstate,
MSG_host_get_power_peak_at(host, pstate), MSG_host_get_speed(host));
// Run a second task
start = MSG_get_clock();
task1 = MSG_task_create("t2", 100E6, 0, NULL);
XBT_INFO("Run a task of %.0E flops", MSG_task_get_flops_amount(task1));
MSG_task_execute(task1);
MSG_task_destroy(task1);
XBT_INFO("Done working on my task; this took %.2fs; current peak speed: %.0E flop/s; number of flops computed so "
"far: %.0E",
MSG_get_clock() - start, MSG_host_get_speed(host), sg_host_get_computed_flops(host));
start = MSG_get_clock();
XBT_INFO("========= Requesting a reset of the computation counter");
sg_host_load_reset(host);
XBT_INFO("Sleep for 4 seconds");
MSG_process_sleep(4);
XBT_INFO("Done sleeping %.2f s; peak speed: %.0E flop/s; number of flops computed so far: %.0E",
MSG_get_clock() - start, MSG_host_get_speed(host), sg_host_get_computed_flops(host));
// =========== Turn the other host off ==========
XBT_INFO("Turning MyHost2 off, and sleeping another 10 seconds. MyHost2 computed %.0f flops so far.",
MSG_host_get_computed_flops(MSG_host_by_name("MyHost2")));
MSG_host_off(MSG_host_by_name("MyHost2"));
start = MSG_get_clock();
MSG_process_sleep(10);
XBT_INFO("Done sleeping %.2f s; peak speed: %.0E flop/s; number of flops computed so far: %.0E",
MSG_get_clock() - start, MSG_host_get_speed(host), sg_host_get_computed_flops(host));
return 0;
}
static int worker(int argc, char *argv[])
{
while (1) {
msg_task_t task = NULL;
XBT_ATTRIB_UNUSED int res = MSG_task_receive(&(task), "worker_mailbox");
xbt_assert(res == MSG_OK, "MSG_task_get failed");
XBT_INFO("Handling task \"%s\"", MSG_task_get_name(task));
if (!strcmp(MSG_task_get_name(task), "finalize")) {
XBT_INFO("Destroying task \"%s\"", task->name);
MSG_task_destroy(task);
break;
}
if (!strcmp(MSG_task_get_name(task), "cancel")) {
MSG_process_create("worker1", worker_main, task, MSG_host_self());
MSG_process_sleep(0.1);
XBT_INFO("Canceling task \"%s\"", task->name);
MSG_task_cancel(task);
continue;
}
double start = MSG_get_clock();
MSG_task_execute(task);
double end = MSG_get_clock();
XBT_INFO("Task \"%s\" done in %f (amount %f)", MSG_task_get_name(task), end - start,
MSG_task_get_flops_amount(task));
MSG_task_destroy(task);
}
XBT_INFO("I'm done. See you!");
return 0;
}
static void test_dynamic_change(void)
{
msg_host_t pm0 = MSG_host_by_name("Fafard");
msg_host_t vm0 = MSG_vm_create_core(pm0, "VM0");
msg_host_t vm1 = MSG_vm_create_core(pm0, "VM1");
MSG_vm_start(vm0);
MSG_vm_start(vm1);
msg_task_t task0 = MSG_task_create("Task0", DOUBLE_MAX, 0, NULL);
msg_task_t task1 = MSG_task_create("Task1", DOUBLE_MAX, 0, NULL);
MSG_process_create("worker0", worker_busy_loop_main, &task0, vm0);
MSG_process_create("worker1", worker_busy_loop_main, &task1, vm1);
double task0_remain_prev = MSG_task_get_flops_amount(task0);
double task1_remain_prev = MSG_task_get_flops_amount(task1);
const double cpu_speed = MSG_host_get_speed(pm0);
for (int i = 0; i < 10; i++) {
double new_bound = (cpu_speed / 10) * i;
XBT_INFO("set bound of VM1 to %f", new_bound);
MSG_vm_set_bound(vm1, new_bound);
MSG_process_sleep(100);
double task0_remain_now = MSG_task_get_flops_amount(task0);
double task1_remain_now = MSG_task_get_flops_amount(task1);
double task0_flops_per_sec = task0_remain_prev - task0_remain_now;
double task1_flops_per_sec = task1_remain_prev - task1_remain_now;
XBT_INFO("Task0@VM0: %f flops/s", task0_flops_per_sec / 100);
XBT_INFO("Task1@VM1: %f flops/s", task1_flops_per_sec / 100);
task0_remain_prev = task0_remain_now;
task1_remain_prev = task1_remain_now;
}
MSG_process_sleep(2000); // let the tasks end
MSG_vm_destroy(vm0);
MSG_vm_destroy(vm1);
}
static int master_main(int argc, char *argv[])
{
xbt_dynar_t hosts_dynar = MSG_hosts_as_dynar();
msg_host_t pm0 = MSG_host_by_name("Fafard");
msg_vm_t vm0 = MSG_vm_create_core(pm0, "VM0");
MSG_vm_start(vm0);
launch_computation_worker(vm0);
while(MSG_get_clock()<100) {
if (atask != NULL)
XBT_INFO("aTask remaining duration: %g", MSG_task_get_flops_amount(atask));
MSG_process_sleep(1);
}
MSG_process_sleep(10000);
MSG_vm_destroy(vm0);
xbt_dynar_free(&hosts_dynar);
return 1;
}
static int worker(int argc, char *argv[])
{
msg_task_t task = NULL;
TRACE_host_variable_set(MSG_host_get_name(MSG_host_self()), "is_worker", 1);
TRACE_host_variable_set(MSG_host_get_name(MSG_host_self()), "task_computation", 0);
while (1) {
MSG_task_receive(&(task), "master_mailbox");
if (strcmp(MSG_task_get_name(task), "finalize") == 0) {
MSG_task_destroy(task);
break;
}
//adding the value returned by MSG_task_get_compute_duration(task)
//to the variable "task_computation"
TRACE_host_variable_add(MSG_host_get_name(MSG_host_self()), "task_computation", MSG_task_get_flops_amount(task));
MSG_task_execute(task);
MSG_task_destroy(task);
task = NULL;
}
return 0;
}
