1 /* Copyright (c) 2013-2014. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "vm_workstation_hl13.hpp"
8 #include "cpu_cas01.hpp"
10 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_vm_workstation);
12 void surf_vm_workstation_model_init_HL13(void){
13 if (surf_cpu_model_vm) {
14 surf_vm_workstation_model = new WorkstationVMHL13Model();
15 ModelPtr model = surf_vm_workstation_model;
17 xbt_dynar_push(model_list, &model);
18 xbt_dynar_push(model_list_invoke, &model);
26 WorkstationVMHL13Model::WorkstationVMHL13Model() : WorkstationVMModel() {
27 p_cpuModel = surf_cpu_model_vm;
30 void WorkstationVMHL13Model::updateActionsState(double /*now*/, double /*delta*/){
34 ActionPtr WorkstationVMHL13Model::communicate(WorkstationPtr src, WorkstationPtr dst, double size, double rate){
35 return surf_network_model->communicate(src->p_netElm, dst->p_netElm, size, rate);
38 /* ind means ''indirect'' that this is a reference on the whole dict_elm
39 * structure (i.e not on the surf_resource_private infos) */
41 WorkstationVMPtr WorkstationVMHL13Model::createWorkstationVM(const char *name, surf_resource_t ind_phys_workstation)
43 WorkstationVMHL13Ptr ws = new WorkstationVMHL13(this, name, NULL, ind_phys_workstation);
45 xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, ws);
48 * - check how network requests are scheduled between distinct processes competing for the same card.
53 static inline double get_solved_value(CpuActionPtr cpu_action)
55 return cpu_action->getVariable()->value;
58 /* In the real world, processes on the guest operating system will be somewhat
59 * degraded due to virtualization overhead. The total CPU share that these
60 * processes get is smaller than that of the VM process gets on a host
61 * operating system. */
62 // const double virt_overhead = 0.95;
63 const double virt_overhead = 1;
65 double WorkstationVMHL13Model::shareResources(double now)
67 /* TODO: udpate action's cost with the total cost of processes on the VM. */
70 /* 0. Make sure that we already calculated the resource share at the physical
73 xbt_assert((xbt_dynar_search(model_list_invoke, &surf_workstation_model)<
74 xbt_dynar_search(model_list_invoke, &surf_vm_workstation_model)),
75 "Cannot assume surf_workstation_model comes before");
77 /* Another option is that we call sub_ws->share_resource() here. The
78 * share_resource() function has no side-effect. We can call it here to
83 /* 1. Now we know how many resource should be assigned to each virtual
84 * machine. We update constraints of the virtual machine layer.
87 * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
88 * X1 + X2 = C (Equation 1)
90 * the resource share of VM1: X1
91 * the resource share of VM2: X2
92 * the capacity of PM1: C
94 * Then, if we have two process (P1 and P2) on VM1.
95 * X1_1 + X1_2 = X1 (Equation 2)
97 * the resource share of P1: X1_1
98 * the resource share of P2: X1_2
99 * the capacity of VM1: X1
101 * Equation 1 was solved in the physical machine layer.
102 * Equation 2 is solved in the virtual machine layer (here).
103 * X1 must be passed to the virtual machine laye as a constraint value.
107 /* iterate for all virtual machines */
108 for (WorkstationVMModel::vm_list_t::iterator iter =
109 WorkstationVMModel::ws_vms.begin();
110 iter != WorkstationVMModel::ws_vms.end(); ++iter) {
112 WorkstationVMPtr ws_vm = &*iter;
113 CpuPtr cpu = ws_vm->p_cpu;
114 xbt_assert(cpu, "cpu-less workstation");
116 double solved_value = get_solved_value(ws_vm->p_action);
117 XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
118 ws_vm->getName(), ws_vm->p_subWs->getName());
120 // TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
121 // cpu_cas01->constraint->bound = solved_value;
122 xbt_assert(cpu->getModel() == surf_cpu_model_vm);
123 lmm_system_t vcpu_system = cpu->getModel()->getMaxminSystem();
124 lmm_update_constraint_bound(vcpu_system, cpu->getConstraint(), virt_overhead * solved_value);
128 /* 2. Calculate resource share at the virtual machine layer. */
129 adjustWeightOfDummyCpuActions();
131 double min_by_cpu = p_cpuModel->shareResources(now);
132 double min_by_net = (strcmp(surf_network_model->getName(), "network NS3")) ? surf_network_model->shareResources(now) : -1;
133 double min_by_sto = -1;
134 if (p_cpuModel == surf_cpu_model_pm)
135 min_by_sto = surf_storage_model->shareResources(now);
137 XBT_DEBUG("model %p, %s min_by_cpu %f, %s min_by_net %f, %s min_by_sto %f",
138 this, surf_cpu_model_pm->getName(), min_by_cpu,
139 surf_network_model->getName(), min_by_net,
140 surf_storage_model->getName(), min_by_sto);
142 double ret = max(max(min_by_cpu, min_by_net), min_by_sto);
143 if (min_by_cpu >= 0.0 && min_by_cpu < ret)
145 if (min_by_net >= 0.0 && min_by_net < ret)
147 if (min_by_sto >= 0.0 && min_by_sto < ret)
150 /* FIXME: 3. do we have to re-initialize our cpu_action object? */
152 /* iterate for all virtual machines */
153 for (WorkstationVMModel::vm_list_t::iterator iter =
154 WorkstationVMModel::ws_vms.begin();
155 iter != WorkstationVMModel::ws_vms.end(); ++iter) {
159 WorkstationVM2013Ptr ws_vm2013 = static_cast<WorkstationVM2013Ptr>(&*iter);
160 XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
161 ws_vm2013->cpu_action->remains,
162 ws_vm2013->cpu_action->start,
163 ws_vm2013->cpu_action->finish
167 void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.getName);
168 surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
169 /* FIXME: this means busy loop? */
170 // ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, GUESTOS_NOISE);
171 ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 0);
182 ActionPtr WorkstationVMHL13Model::executeParallelTask(int workstation_nb,
183 void **workstation_list,
184 double *computation_amount,
185 double *communication_amount,
187 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
188 if ((workstation_nb == 1)
189 && (cost_or_zero(communication_amount, 0) == 0.0))
190 return ((WorkstationCLM03Ptr)workstation_list[0])->execute(computation_amount[0]);
191 else if ((workstation_nb == 1)
192 && (cost_or_zero(computation_amount, 0) == 0.0))
193 return communicate((WorkstationCLM03Ptr)workstation_list[0], (WorkstationCLM03Ptr)workstation_list[0],communication_amount[0], rate);
194 else if ((workstation_nb == 2)
195 && (cost_or_zero(computation_amount, 0) == 0.0)
196 && (cost_or_zero(computation_amount, 1) == 0.0)) {
200 for (i = 0; i < workstation_nb * workstation_nb; i++) {
201 if (cost_or_zero(communication_amount, i) > 0.0) {
203 value = cost_or_zero(communication_amount, i);
207 return communicate((WorkstationCLM03Ptr)workstation_list[0], (WorkstationCLM03Ptr)workstation_list[1],value, rate);
211 THROW_UNIMPLEMENTED; /* This model does not implement parallel tasks */
219 WorkstationVMHL13::WorkstationVMHL13(WorkstationVMModelPtr model, const char* name, xbt_dict_t props,
220 surf_resource_t ind_phys_workstation)
221 : WorkstationVM(model, name, props, NULL, NULL)
223 WorkstationPtr sub_ws = static_cast<WorkstationPtr>(surf_workstation_resource_priv(ind_phys_workstation));
225 /* Currently, we assume a VM has no storage. */
228 /* Currently, a VM uses the network resource of its physical host. In
229 * host_lib, this network resource object is referred from two different keys.
230 * When deregistering the reference that points the network resource object
231 * from the VM name, we have to make sure that the system does not call the
232 * free callback for the network resource object. The network resource object
233 * is still used by the physical machine. */
234 p_netElm = new RoutingEdgeWrapper(static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, sub_ws->getName(), ROUTING_HOST_LEVEL)));
235 xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, p_netElm);
238 p_currentState = SURF_VM_STATE_CREATED;
240 // //// CPU RELATED STUFF ////
241 // Roughly, create a vcpu resource by using the values of the sub_cpu one.
242 CpuCas01Ptr sub_cpu = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(ind_phys_workstation));
244 /* We can assume one core and cas01 cpu for the first step.
245 * Do xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu) if you get the resource. */
247 p_cpu = surf_cpu_model_vm->createCpu(name, // name
248 sub_cpu->getPowerPeakList(), // host->power_peak,
249 sub_cpu->getPState(),
250 1, // host->power_scale,
251 NULL, // host->power_trace,
252 1, // host->core_amount,
253 SURF_RESOURCE_ON, // host->initial_state,
254 NULL, // host->state_trace,
255 NULL); // host->properties,
257 /* We create cpu_action corresponding to a VM process on the host operating system. */
258 /* FIXME: TODO: we have to peridocally input GUESTOS_NOISE to the system? how ? */
259 // vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, GUESTOS_NOISE);
260 p_action = sub_cpu->execute(0);
262 /* The SURF_WKS_LEVEL at host_lib saves workstation_CLM03 objects. Please
263 * note workstation_VM2013 objects, inheriting the workstation_CLM03
264 * structure, are also saved there.
266 * If you want to get a workstation_VM2013 object from host_lib, see
267 * ws->generic_resouce.model->type first. If it is
268 * SURF_MODEL_TYPE_VM_WORKSTATION, you can cast ws to vm_ws. */
269 XBT_INFO("Create VM(%s)@PM(%s) with %ld mounted disks", name, sub_ws->getName(), xbt_dynar_length(p_storage));
273 * A physical host does not disappear in the current SimGrid code, but a VM may
274 * disappear during a simulation.
276 WorkstationVMHL13::~WorkstationVMHL13()
278 /* Free the cpu_action of the VM. */
279 xbt_assert(p_action->unref() == 1, "Bug: some resource still remains");
282 void WorkstationVMHL13::updateState(tmgr_trace_event_t /*event_type*/, double /*value*/, double /*date*/) {
283 THROW_IMPOSSIBLE; /* This model does not implement parallel tasks */
286 bool WorkstationVMHL13::isUsed() {
287 THROW_IMPOSSIBLE; /* This model does not implement parallel tasks */
291 e_surf_resource_state_t WorkstationVMHL13::getState()
293 return (e_surf_resource_state_t) p_currentState;
296 void WorkstationVMHL13::setState(e_surf_resource_state_t state)
298 p_currentState = (e_surf_vm_state_t) state;
301 void WorkstationVMHL13::suspend()
304 p_currentState = SURF_VM_STATE_SUSPENDED;
307 void WorkstationVMHL13::resume()
310 p_currentState = SURF_VM_STATE_RUNNING;
313 void WorkstationVMHL13::save()
315 p_currentState = SURF_VM_STATE_SAVING;
317 /* FIXME: do something here */
319 p_currentState = SURF_VM_STATE_SAVED;
322 void WorkstationVMHL13::restore()
324 p_currentState = SURF_VM_STATE_RESTORING;
326 /* FIXME: do something here */
328 p_currentState = SURF_VM_STATE_RUNNING;
332 * Update the physical host of the given VM
334 void WorkstationVMHL13::migrate(surf_resource_t ind_dst_pm)
336 /* ind_phys_workstation equals to smx_host_t */
337 WorkstationPtr ws_dst = static_cast<WorkstationPtr>(surf_workstation_resource_priv(ind_dst_pm));
338 const char *vm_name = getName();
339 const char *pm_name_src = p_subWs->getName();
340 const char *pm_name_dst = ws_dst->getName();
346 /* update net_elm with that of the destination physical host */
347 RoutingEdgePtr old_net_elm = p_netElm;
348 RoutingEdgePtr new_net_elm = new RoutingEdgeWrapper(static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, pm_name_dst, ROUTING_HOST_LEVEL)));
349 xbt_assert(new_net_elm);
351 /* Unregister the current net_elm from host_lib. Do not call the free callback. */
352 xbt_lib_unset(host_lib, vm_name, ROUTING_HOST_LEVEL, 0);
354 /* Then, resister the new one. */
355 p_netElm = new_net_elm;
356 xbt_lib_set(host_lib, vm_name, ROUTING_HOST_LEVEL, p_netElm);
360 /* Update vcpu's action for the new pm */
363 XBT_INFO("cpu_action->remains %g", p_action->remains);
364 XBT_INFO("cost %f remains %f start %f finish %f", p_action->cost,
369 XBT_INFO("cpu_action state %d", surf_action_get_state(p_action));
372 /* create a cpu action bound to the pm model at the destination. */
373 CpuActionPtr new_cpu_action = static_cast<CpuActionPtr>(
374 static_cast<CpuPtr>(surf_cpu_resource_priv(ind_dst_pm))->execute(0));
376 e_surf_action_state_t state = p_action->getState();
377 if (state != SURF_ACTION_DONE)
378 XBT_CRITICAL("FIXME: may need a proper handling, %d", state);
379 if (p_action->getRemainsNoUpdate() > 0)
380 XBT_CRITICAL("FIXME: need copy the state(?), %f", p_action->getRemainsNoUpdate());
382 /* keep the bound value of the cpu action of the VM. */
383 double old_bound = p_action->getBound();
384 if (old_bound != 0) {
385 XBT_INFO("migrate VM(%s): set bound (%f) at %s", vm_name, old_bound, pm_name_dst);
386 new_cpu_action->setBound(old_bound);
389 xbt_assert( p_action->unref() == 1, "Bug: some resource still remains");
391 p_action = new_cpu_action;
394 XBT_DEBUG("migrate VM(%s): change net_elm (%p to %p)", vm_name, old_net_elm, new_net_elm);
395 XBT_DEBUG("migrate VM(%s): change PM (%s to %s)", vm_name, pm_name_src, pm_name_dst);
399 void WorkstationVMHL13::setBound(double bound){
400 p_action->setBound(bound);
403 void WorkstationVMHL13::setAffinity(CpuPtr cpu, unsigned long mask){
404 p_action->setAffinity(cpu, mask);
408 * A surf level object will be useless in the upper layer. Returning the
409 * dict_elm of the host.
411 surf_resource_t WorkstationVMHL13::getPm()
413 return xbt_lib_get_elm_or_null(host_lib, p_subWs->getName());
416 /* Adding a task to a VM updates the VCPU task on its physical machine. */
417 ActionPtr WorkstationVMHL13::execute(double size)
419 double old_cost = p_action->getCost();
420 double new_cost = old_cost + size;
422 XBT_DEBUG("VM(%s)@PM(%s): update dummy action's cost (%f -> %f)",
423 getName(), p_subWs->getName(),
426 p_action->setCost(new_cost);
428 return p_cpu->execute(size);
431 ActionPtr WorkstationVMHL13::sleep(double duration) {
432 return p_cpu->sleep(duration);
439 //FIME:: handle action cancel