/** @brief take into account changes of speed (either load or max) */
void CpuCas01::onSpeedChange() {
lmm_variable_t var = nullptr;
lmm_element_t elem = nullptr;
lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
coresAmount_ * speed_.scale * speed_.peak);
while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
lmm_update_variable_bound(getModel()->getMaxminSystem(), action->getVariable(), speed_.scale * speed_.peak);
}
Cpu::onSpeedChange();
}
double VMHL13Model::next_occuring_event(double now)
{
/* TODO: update action's cost with the total cost of processes on the VM. */
/* 1. Now we know how many resource should be assigned to each virtual
* machine. We update constraints of the virtual machine layer.
*
* If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
* X1 + X2 = C (Equation 1)
* where
* the resource share of VM1: X1
* the resource share of VM2: X2
* the capacity of PM1: C
*
* Then, if we have two process (P1 and P2) on VM1.
* X1_1 + X1_2 = X1 (Equation 2)
* where
* the resource share of P1: X1_1
* the resource share of P2: X1_2
* the capacity of VM1: X1
*
* Equation 1 was solved in the physical machine layer.
* Equation 2 is solved in the virtual machine layer (here).
* X1 must be passed to the virtual machine laye as a constraint value.
**/
/* iterate for all virtual machines */
for (VMModel::vm_list_t::iterator iter = VMModel::ws_vms.begin(); iter != VMModel::ws_vms.end(); ++iter) {
VirtualMachine *ws_vm = &*iter;
Cpu *cpu = ws_vm->p_cpu;
xbt_assert(cpu, "cpu-less host");
double solved_value = ws_vm->action_->getVariable()->value;
XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value, ws_vm->getName(), ws_vm->getPm()->name().c_str());
// TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
// cpu_cas01->constraint->bound = solved_value;
xbt_assert(cpu->getModel() == surf_cpu_model_vm);
lmm_system_t vcpu_system = cpu->getModel()->getMaxminSystem();
lmm_update_constraint_bound(vcpu_system, cpu->getConstraint(), virt_overhead * solved_value);
}
/* 2. Calculate resource share at the virtual machine layer. */
adjustWeightOfDummyCpuActions();
/* 3. Ready. Get the next occuring event */
return surf_cpu_model_vm->next_occuring_event(now);
}
double VMHL13Model::shareResources(double now)
{
/* TODO: udpate action's cost with the total cost of processes on the VM. */
/* 0. Make sure that we already calculated the resource share at the physical
* machine layer. */
{
_XBT_GNUC_UNUSED ModelPtr ws_model = surf_host_model;
_XBT_GNUC_UNUSED ModelPtr vm_ws_model = surf_vm_model;
_XBT_GNUC_UNUSED unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, &ws_model);
_XBT_GNUC_UNUSED unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, &vm_ws_model);
xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_host_model comes before");
/* Another option is that we call sub_ws->share_resource() here. The
* share_resource() function has no side-effect. We can call it here to
* ensure that. */
}
/* 1. Now we know how many resource should be assigned to each virtual
* machine. We update constraints of the virtual machine layer.
*
*
* If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
* X1 + X2 = C (Equation 1)
* where
* the resource share of VM1: X1
* the resource share of VM2: X2
* the capacity of PM1: C
*
* Then, if we have two process (P1 and P2) on VM1.
* X1_1 + X1_2 = X1 (Equation 2)
* where
* the resource share of P1: X1_1
* the resource share of P2: X1_2
* the capacity of VM1: X1
*
* Equation 1 was solved in the physical machine layer.
* Equation 2 is solved in the virtual machine layer (here).
* X1 must be passed to the virtual machine laye as a constraint value.
*
**/
/* iterate for all virtual machines */
for (VMModel::vm_list_t::iterator iter =
VMModel::ws_vms.begin();
iter != VMModel::ws_vms.end(); ++iter) {
VMPtr ws_vm = &*iter;
CpuPtr cpu = ws_vm->p_cpu;
xbt_assert(cpu, "cpu-less host");
double solved_value = get_solved_value(ws_vm->p_action);
XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
ws_vm->getName(), ws_vm->p_subWs->getName());
// TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
// cpu_cas01->constraint->bound = solved_value;
xbt_assert(cpu->getModel() == surf_cpu_model_vm);
lmm_system_t vcpu_system = cpu->getModel()->getMaxminSystem();
lmm_update_constraint_bound(vcpu_system, cpu->getConstraint(), virt_overhead * solved_value);
}
/* 2. Calculate resource share at the virtual machine layer. */
adjustWeightOfDummyCpuActions();
double min_by_cpu = p_cpuModel->shareResources(now);
double min_by_net = (strcmp(surf_network_model->getName(), "network NS3")) ? surf_network_model->shareResources(now) : -1;
double min_by_sto = -1;
if (p_cpuModel == surf_cpu_model_pm)
min_by_sto = surf_storage_model->shareResources(now);
XBT_DEBUG("model %p, %s min_by_cpu %f, %s min_by_net %f, %s min_by_sto %f",
this, surf_cpu_model_pm->getName(), min_by_cpu,
surf_network_model->getName(), min_by_net,
surf_storage_model->getName(), min_by_sto);
double ret = max(max(min_by_cpu, min_by_net), min_by_sto);
if (min_by_cpu >= 0.0 && min_by_cpu < ret)
ret = min_by_cpu;
if (min_by_net >= 0.0 && min_by_net < ret)
ret = min_by_net;
if (min_by_sto >= 0.0 && min_by_sto < ret)
ret = min_by_sto;
/* FIXME: 3. do we have to re-initialize our cpu_action object? */
#if 0
/* iterate for all virtual machines */
for (VMModel::vm_list_t::iterator iter =
VMModel::ws_vms.begin();
iter != VMModel::ws_vms.end(); ++iter) {
{
#if 0
VM2013Ptr ws_vm2013 = static_cast<VM2013Ptr>(&*iter);
XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
ws_vm2013->cpu_action->remains,
ws_vm2013->cpu_action->start,
ws_vm2013->cpu_action->finish
);
#endif
#if 0
void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.getName);
surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
/* FIXME: this means busy loop? */
// ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, GUESTOS_NOISE);
ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 0);
#endif
}
}
#endif
return ret;
}
