4 * Created on: Nov 12, 2013
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_current_default(void){
13 if (surf_cpu_model_vm) {
14 surf_vm_workstation_model = new WorkstationVMHL13Model();
15 ModelPtr model = static_cast<ModelPtr>(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 xbt_dynar_t WorkstationVMHL13Model::getRoute(WorkstationPtr src, WorkstationPtr dst){
31 return WorkstationCLM03Model::getRoute(src, dst);
34 ActionPtr WorkstationVMHL13Model::communicate(WorkstationPtr src, WorkstationPtr dst, double size, double rate){
35 return WorkstationCLM03Model::communicate(src, dst, 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 void WorkstationVMHL13Model::createResource(const char *name, void *ind_phys_workstation)
43 WorkstationVMHL13LmmPtr ws = new WorkstationVMHL13Lmm(this, name, NULL, static_cast<surf_resource_t>(ind_phys_workstation));
45 xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, static_cast<ResourcePtr>(ws));
48 * - check how network requests are scheduled between distinct processes competing for the same card.
52 static inline double get_solved_value(CpuActionLmmPtr cpu_action)
54 return cpu_action->getVariable()->value;
57 /* In the real world, processes on the guest operating system will be somewhat
58 * degraded due to virtualization overhead. The total CPU share that these
59 * processes get is smaller than that of the VM process gets on a host
60 * operating system. */
61 // const double virt_overhead = 0.95;
62 const double virt_overhead = 1;
64 double WorkstationVMHL13Model::shareResources(double now)
66 /* TODO: udpate action's cost with the total cost of processes on the VM. */
69 /* 0. Make sure that we already calculated the resource share at the physical
72 ModelPtr ws_model = static_cast<ModelPtr>(surf_workstation_model);
73 ModelPtr vm_ws_model = static_cast<ModelPtr>(surf_vm_workstation_model);
74 unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, &ws_model);
75 unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, &vm_ws_model);
76 xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_workstation_model comes before");
78 /* Another option is that we call sub_ws->share_resource() here. The
79 * share_resource() function has no side-effect. We can call it here to
84 /* 1. Now we know how many resource should be assigned to each virtual
85 * machine. We update constraints of the virtual machine layer.
88 * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
89 * X1 + X2 = C (Equation 1)
91 * the resource share of VM1: X1
92 * the resource share of VM2: X2
93 * the capacity of PM1: C
95 * Then, if we have two process (P1 and P2) on VM1.
96 * X1_1 + X1_2 = X1 (Equation 2)
98 * the resource share of P1: X1_1
99 * the resource share of P2: X1_2
100 * the capacity of VM1: X1
102 * Equation 1 was solved in the physical machine layer.
103 * Equation 2 is solved in the virtual machine layer (here).
104 * X1 must be passed to the virtual machine laye as a constraint value.
108 /* iterate for all hosts including virtual machines */
109 xbt_lib_cursor_t cursor;
112 xbt_lib_foreach(host_lib, cursor, key, ind_host) {
113 WorkstationPtr ws = dynamic_cast<WorkstationPtr>(
114 static_cast<ResourcePtr>(ind_host[SURF_WKS_LEVEL]));
115 CpuLmmPtr cpu = dynamic_cast<CpuLmmPtr>(
116 static_cast<ResourcePtr>(ind_host[SURF_CPU_LEVEL]));
120 /* skip if it is not a virtual machine */
121 if (ws->getModel() != static_cast<ModelPtr>(surf_vm_workstation_model))
123 xbt_assert(cpu, "cpu-less workstation");
125 /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
126 WorkstationVMPtr ws_vm = dynamic_cast<WorkstationVMPtr>(ws);
128 double solved_value = get_solved_value(reinterpret_cast<CpuActionLmmPtr>(ws_vm->p_action));
129 XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
130 ws->getName(), ws_vm->p_subWs->getName());
132 // TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
133 // cpu_cas01->constraint->bound = solved_value;
134 xbt_assert(cpu->getModel() == static_cast<ModelPtr>(surf_cpu_model_vm));
135 lmm_system_t vcpu_system = cpu->getModel()->getMaxminSystem();
136 lmm_update_constraint_bound(vcpu_system, cpu->constraint(), virt_overhead * solved_value);
140 /* 2. Calculate resource share at the virtual machine layer. */
141 double ret = WorkstationCLM03Model::shareResources(now);
144 /* FIXME: 3. do we have to re-initialize our cpu_action object? */
146 /* iterate for all hosts including virtual machines */
147 xbt_lib_foreach(host_lib, cursor, key, ind_host) {
148 WorkstationCLM03Ptr ws_clm03 = ind_host[SURF_WKS_LEVEL];
150 /* skip if it is not a virtual machine */
153 if (ws_clm03->getModel() != surf_vm_workstation_model)
156 /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
159 WorkstationVM2013Ptr ws_vm2013 = (workstation_VM2013_t) ws_clm03;
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);
185 WorkstationVMHL13Lmm::WorkstationVMHL13Lmm(WorkstationVMModelPtr model, const char* name, xbt_dict_t props,
186 surf_resource_t ind_phys_workstation)
187 : Resource(model, name, props)
188 , WorkstationVMLmm(NULL, NULL)
189 , WorkstationCLM03Lmm(model, name, props, NULL, NULL, NULL)
191 WorkstationPtr sub_ws = dynamic_cast<WorkstationPtr>(
192 static_cast<ResourcePtr>(
193 surf_workstation_resource_priv(ind_phys_workstation)));
195 /* Currently, we assume a VM has no storage. */
198 /* Currently, a VM uses the network resource of its physical host. In
199 * host_lib, this network resource object is refered from two different keys.
200 * When deregistering the reference that points the network resource object
201 * from the VM name, we have to make sure that the system does not call the
202 * free callback for the network resource object. The network resource object
203 * is still used by the physical machine. */
204 p_netElm = static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, sub_ws->getName(), ROUTING_HOST_LEVEL));
205 xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, p_netElm);
208 p_currentState = SURF_VM_STATE_CREATED;
210 // //// CPU RELATED STUFF ////
211 // Roughly, create a vcpu resource by using the values of the sub_cpu one.
212 CpuCas01LmmPtr sub_cpu = dynamic_cast<CpuCas01LmmPtr>(
213 static_cast<ResourcePtr>(
214 surf_cpu_resource_priv(ind_phys_workstation)));
216 /* We can assume one core and cas01 cpu for the first step.
217 * Do xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu) if you get the resource. */
219 p_cpu = static_cast<CpuCas01ModelPtr>(surf_cpu_model_vm)->createResource(name, // name
220 sub_cpu->p_powerPeakList, // host->power_peak,
222 1, // host->power_scale,
223 NULL, // host->power_trace,
224 1, // host->core_amount,
225 SURF_RESOURCE_ON, // host->initial_state,
226 NULL, // host->state_trace,
227 NULL); // host->properties,
229 /* We create cpu_action corresponding to a VM process on the host operating system. */
230 /* FIXME: TODO: we have to peridocally input GUESTOS_NOISE to the system? how ? */
231 // vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, GUESTOS_NOISE);
232 p_action = dynamic_cast<CpuActionLmmPtr>(sub_cpu->execute(0));
234 /* The SURF_WKS_LEVEL at host_lib saves workstation_CLM03 objects. Please
235 * note workstation_VM2013 objects, inheriting the workstation_CLM03
236 * structure, are also saved there.
238 * If you want to get a workstation_VM2013 object from host_lib, see
239 * ws->generic_resouce.model->type first. If it is
240 * SURF_MODEL_TYPE_VM_WORKSTATION, you can cast ws to vm_ws. */
241 XBT_INFO("Create VM(%s)@PM(%s) with %ld mounted disks", name, sub_ws->getName(), xbt_dynar_length(p_storage));
245 * A physical host does not disapper in the current SimGrid code, but a VM may
246 * disapper during a simulation.
248 WorkstationVMHL13Lmm::~WorkstationVMHL13Lmm()
250 /* ind_phys_workstation equals to smx_host_t */
251 surf_resource_t ind_vm_workstation = xbt_lib_get_elm_or_null(host_lib, getName());
253 /* Before clearing the entries in host_lib, we have to pick up resources. */
254 CpuCas01LmmPtr cpu = dynamic_cast<CpuCas01LmmPtr>(
255 static_cast<ResourcePtr>(
256 surf_cpu_resource_priv(ind_vm_workstation)));
258 /* We deregister objects from host_lib, without invoking the freeing callback
261 * Do not call xbt_lib_remove() here. It deletes all levels of the key,
262 * including MSG_HOST_LEVEL and others. We should unregister only what we know.
264 xbt_lib_unset(host_lib, getName(), SURF_CPU_LEVEL, 0);
265 xbt_lib_unset(host_lib, getName(), ROUTING_HOST_LEVEL, 0);
266 xbt_lib_unset(host_lib, getName(), SURF_WKS_LEVEL, 0);
268 /* TODO: comment out when VM stroage is implemented. */
269 // xbt_lib_unset(host_lib, name, SURF_STORAGE_LEVEL, 0);
272 /* Free the cpu_action of the VM. */
273 int ret = p_action->unref();
274 xbt_assert(ret == 1, "Bug: some resource still remains");
276 /* Free the cpu resource of the VM. If using power_trace, we will have to */
279 /* Free the network resource of the VM. */
280 // Nothing has to be done, because net_elmts is just a pointer on the physical one
282 /* Free the storage resource of the VM. */
285 /* Free the workstation resource of the VM. */
288 e_surf_resource_state_t WorkstationVMHL13Lmm::getState()
290 return (e_surf_resource_state_t) p_currentState;
293 void WorkstationVMHL13Lmm::setState(e_surf_resource_state_t state)
295 p_currentState = (e_surf_vm_state_t) state;
298 void WorkstationVMHL13Lmm::suspend()
301 p_currentState = SURF_VM_STATE_SUSPENDED;
304 void WorkstationVMHL13Lmm::resume()
307 p_currentState = SURF_VM_STATE_RUNNING;
310 void WorkstationVMHL13Lmm::save()
312 p_currentState = SURF_VM_STATE_SAVING;
314 /* FIXME: do something here */
316 p_currentState = SURF_VM_STATE_SAVED;
319 void WorkstationVMHL13Lmm::restore()
321 p_currentState = SURF_VM_STATE_RESTORING;
323 /* FIXME: do something here */
325 p_currentState = SURF_VM_STATE_RUNNING;
329 * Update the physical host of the given VM
331 void WorkstationVMHL13Lmm::migrate(surf_resource_t ind_dst_pm)
333 /* ind_phys_workstation equals to smx_host_t */
334 WorkstationPtr ws_dst = dynamic_cast<WorkstationPtr>(
335 static_cast<ResourcePtr>(
336 surf_workstation_resource_priv(ind_dst_pm)));
337 const char *vm_name = getName();
338 const char *pm_name_src = p_subWs->getName();
339 const char *pm_name_dst = ws_dst->getName();
345 /* update net_elm with that of the destination physical host */
346 RoutingEdgePtr old_net_elm = p_netElm;
347 RoutingEdgePtr new_net_elm = static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, pm_name_dst, ROUTING_HOST_LEVEL));
348 xbt_assert(new_net_elm);
350 /* Unregister the current net_elm from host_lib. Do not call the free callback. */
351 xbt_lib_unset(host_lib, vm_name, ROUTING_HOST_LEVEL, 0);
353 /* Then, resister the new one. */
354 p_netElm = new_net_elm;
355 xbt_lib_set(host_lib, vm_name, ROUTING_HOST_LEVEL, p_netElm);
359 /* Update vcpu's action for the new pm */
362 XBT_INFO("cpu_action->remains %g", p_action->remains);
363 XBT_INFO("cost %f remains %f start %f finish %f", p_action->cost,
368 XBT_INFO("cpu_action state %d", surf_action_get_state(p_action));
371 /* create a cpu action bound to the pm model at the destination. */
372 CpuActionLmmPtr new_cpu_action = dynamic_cast<CpuActionLmmPtr>(
373 dynamic_cast<CpuCas01LmmPtr>(
374 static_cast<ResourcePtr>(
375 surf_cpu_resource_priv(ind_dst_pm)))->execute(0));
377 e_surf_action_state_t state = p_action->getState();
378 if (state != SURF_ACTION_DONE)
379 XBT_CRITICAL("FIXME: may need a proper handling, %d", state);
380 if (p_action->getRemains() > 0)
381 XBT_CRITICAL("FIXME: need copy the state(?), %f", p_action->getRemains());
383 int ret = p_action->unref();
384 xbt_assert(ret == 1, "Bug: some resource still remains");
386 /* keep the bound value of the cpu action of the VM. */
387 double old_bound = p_action->getBound();
388 if (old_bound != 0) {
389 XBT_INFO("migrate VM(%s): set bound (%lf) at %s", vm_name, old_bound, pm_name_dst);
390 new_cpu_action->setBound(old_bound);
393 p_action = new_cpu_action;
396 XBT_DEBUG("migrate VM(%s): change net_elm (%p to %p)", vm_name, old_net_elm, new_net_elm);
397 XBT_DEBUG("migrate VM(%s): change PM (%s to %s)", vm_name, pm_name_src, pm_name_dst);
400 void WorkstationVMHL13Lmm::setBound(double bound){
401 p_action->setBound(bound);
404 void WorkstationVMHL13Lmm::setAffinity(CpuLmmPtr cpu, unsigned long mask){
405 p_action->setAffinity(cpu, mask);
409 * A surf level object will be useless in the upper layer. Returing the
410 * dict_elm of the host.
412 surf_resource_t WorkstationVMHL13Lmm::getPm()
414 return xbt_lib_get_elm_or_null(host_lib, p_subWs->getName());
417 /* Adding a task to a VM updates the VCPU task on its physical machine. */
418 ActionPtr WorkstationVMHL13Lmm::execute(double size)
420 double old_cost = p_action->getCost();
421 double new_cost = old_cost + size;
423 XBT_DEBUG("VM(%s)@PM(%s): update dummy action's cost (%f -> %f)",
424 getName(), p_subWs->getName(),
427 p_action->setCost(new_cost);
429 return WorkstationCLM03Lmm::execute(size);
436 //FIME:: handle action cancel