4 * Created on: Nov 12, 2013
7 #include "vm_workstation.hpp"
8 #include "cpu_cas01.hpp"
9 #include "maxmin_private.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
13 "Logging specific to the SURF VM workstation module");
16 WorkstationVMModelPtr surf_vm_workstation_model = NULL;
18 void surf_vm_workstation_model_init_current_default(void){
19 if (surf_cpu_model_vm) {
20 surf_vm_workstation_model = new WorkstationVMModel();
21 ModelPtr model = static_cast<ModelPtr>(surf_vm_workstation_model);
23 xbt_dynar_push(model_list, &model);
24 xbt_dynar_push(model_list_invoke, &model);
32 WorkstationVMModel::WorkstationVMModel() : WorkstationModel("Virtual Workstation") {
33 p_cpuModel = surf_cpu_model_vm;
36 /* ind means ''indirect'' that this is a reference on the whole dict_elm
37 * structure (i.e not on the surf_resource_private infos) */
39 void WorkstationVMModel::createResource(const char *name, void *ind_phys_workstation)
41 WorkstationVM2013LmmPtr ws = new WorkstationVM2013Lmm(this, name, NULL, static_cast<surf_resource_t>(ind_phys_workstation));
43 xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, ws);
46 * - check how network requests are scheduled between distinct processes competing for the same card.
50 static inline double get_solved_value(CpuActionLmmPtr cpu_action)
52 return cpu_action->p_variable->value;
55 /* In the real world, processes on the guest operating system will be somewhat
56 * degraded due to virtualization overhead. The total CPU share that these
57 * processes get is smaller than that of the VM process gets on a host
58 * operating system. */
59 // const double virt_overhead = 0.95;
60 const double virt_overhead = 1;
62 double WorkstationVMModel::shareResources(double now)
64 /* TODO: udpate action's cost with the total cost of processes on the VM. */
67 /* 0. Make sure that we already calculated the resource share at the physical
70 ModelPtr ws_model = static_cast<ModelPtr>(surf_workstation_model);
71 ModelPtr vm_ws_model = static_cast<ModelPtr>(surf_vm_workstation_model);
72 unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, &ws_model);
73 unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, &vm_ws_model);
74 xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_workstation_model comes before");
76 /* Another option is that we call sub_ws->share_resource() here. The
77 * share_resource() function has no side-effect. We can call it here to
82 /* 1. Now we know how many resource should be assigned to each virtual
83 * machine. We update constraints of the virtual machine layer.
86 * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
87 * X1 + X2 = C (Equation 1)
89 * the resource share of VM1: X1
90 * the resource share of VM2: X2
91 * the capacity of PM1: C
93 * Then, if we have two process (P1 and P2) on VM1.
94 * X1_1 + X1_2 = X1 (Equation 2)
96 * the resource share of P1: X1_1
97 * the resource share of P2: X1_2
98 * the capacity of VM1: X1
100 * Equation 1 was solved in the physical machine layer.
101 * Equation 2 is solved in the virtual machine layer (here).
102 * X1 must be passed to the virtual machine laye as a constraint value.
106 /* iterate for all hosts including virtual machines */
107 xbt_lib_cursor_t cursor;
110 xbt_lib_foreach(host_lib, cursor, key, ind_host) {
111 WorkstationCLM03Ptr ws_clm03 = dynamic_cast<WorkstationCLM03Ptr>(
112 static_cast<ResourcePtr>(ind_host[SURF_WKS_LEVEL]));
113 CpuCas01LmmPtr cpu_cas01 = dynamic_cast<CpuCas01LmmPtr>(
114 static_cast<ResourcePtr>(ind_host[SURF_CPU_LEVEL]));
118 /* skip if it is not a virtual machine */
119 if (ws_clm03->p_model != static_cast<ModelPtr>(surf_vm_workstation_model))
121 xbt_assert(cpu_cas01, "cpu-less workstation");
123 /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
124 WorkstationVM2013Ptr ws_vm2013 = dynamic_cast<WorkstationVM2013Ptr>(ws_clm03);
126 double solved_value = get_solved_value(ws_vm2013->p_action);
127 XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
128 ws_clm03->m_name, ws_vm2013->p_subWs->m_name);
130 // TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
131 // cpu_cas01->constraint->bound = solved_value;
132 xbt_assert(cpu_cas01->p_model == static_cast<ModelPtr>(surf_cpu_model_vm));
133 lmm_system_t vcpu_system = cpu_cas01->p_model->p_maxminSystem;
134 lmm_update_constraint_bound(vcpu_system, cpu_cas01->p_constraint, virt_overhead * solved_value);
138 /* 2. Calculate resource share at the virtual machine layer. */
139 double ret = WorkstationModel::shareResources(now);
142 /* FIXME: 3. do we have to re-initialize our cpu_action object? */
144 /* iterate for all hosts including virtual machines */
145 xbt_lib_foreach(host_lib, cursor, key, ind_host) {
146 WorkstationCLM03Ptr ws_clm03 = ind_host[SURF_WKS_LEVEL];
148 /* skip if it is not a virtual machine */
151 if (ws_clm03->p_model != surf_vm_workstation_model)
154 /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
157 WorkstationVM2013Ptr ws_vm2013 = (workstation_VM2013_t) ws_clm03;
158 XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
159 ws_vm2013->cpu_action->remains,
160 ws_vm2013->cpu_action->start,
161 ws_vm2013->cpu_action->finish
165 void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.name);
166 surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
167 /* FIXME: this means busy loop? */
168 // ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, GUESTOS_NOISE);
169 ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 0);
184 WorkstationVM2013Lmm::WorkstationVM2013Lmm(WorkstationVMModelPtr model, const char* name, xbt_dict_t props,
185 surf_resource_t ind_phys_workstation)
186 : Resource(model, name, props),
187 WorkstationCLM03(model, name, props, NULL, NULL, NULL),
188 WorkstationVM2013(model, name, props, NULL, NULL),
189 WorkstationCLM03Lmm(model, name, props, NULL, NULL, NULL) {
190 WorkstationCLM03Ptr sub_ws = dynamic_cast<WorkstationCLM03Ptr>(
191 static_cast<ResourcePtr>(
192 surf_workstation_resource_priv(ind_phys_workstation)));
194 /* Currently, we assume a VM has no storage. */
197 /* Currently, a VM uses the network resource of its physical host. In
198 * host_lib, this network resource object is refered from two different keys.
199 * When deregistering the reference that points the network resource object
200 * from the VM name, we have to make sure that the system does not call the
201 * free callback for the network resource object. The network resource object
202 * is still used by the physical machine. */
203 p_netElm = static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, sub_ws->m_name, ROUTING_HOST_LEVEL));
204 xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, p_netElm);
207 p_currentState = SURF_VM_STATE_CREATED;
209 // //// CPU RELATED STUFF ////
210 // Roughly, create a vcpu resource by using the values of the sub_cpu one.
211 CpuCas01LmmPtr sub_cpu = dynamic_cast<CpuCas01LmmPtr>(
212 static_cast<ResourcePtr>(
213 surf_cpu_resource_priv(ind_phys_workstation)));
215 /* We can assume one core and cas01 cpu for the first step.
216 * Do xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu) if you get the resource. */
218 static_cast<CpuCas01ModelPtr>(surf_cpu_model_vm)->createResource(name, // name
219 sub_cpu->p_powerPeakList, // host->power_peak,
221 1, // host->power_scale,
222 NULL, // host->power_trace,
223 1, // host->core_amount,
224 SURF_RESOURCE_ON, // host->initial_state,
225 NULL, // host->state_trace,
226 NULL); // host->properties,
228 /* We create cpu_action corresponding to a VM process on the host operating system. */
229 /* FIXME: TODO: we have to peridocally input GUESTOS_NOISE to the system? how ? */
230 // vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, GUESTOS_NOISE);
231 p_action = dynamic_cast<CpuActionLmmPtr>(sub_cpu->execute(0));
233 /* The SURF_WKS_LEVEL at host_lib saves workstation_CLM03 objects. Please
234 * note workstation_VM2013 objects, inheriting the workstation_CLM03
235 * structure, are also saved there.
237 * If you want to get a workstation_VM2013 object from host_lib, see
238 * ws->generic_resouce.model->type first. If it is
239 * SURF_MODEL_TYPE_VM_WORKSTATION, you can cast ws to vm_ws. */
240 XBT_INFO("Create VM(%s)@PM(%s) with %ld mounted disks", name, sub_ws->m_name, xbt_dynar_length(p_storage));
244 * A physical host does not disapper in the current SimGrid code, but a VM may
245 * disapper during a simulation.
247 WorkstationVM2013Lmm::~WorkstationVM2013Lmm()
249 /* ind_phys_workstation equals to smx_host_t */
250 surf_resource_t ind_vm_workstation = xbt_lib_get_elm_or_null(host_lib, m_name);
252 /* Before clearing the entries in host_lib, we have to pick up resources. */
253 CpuCas01LmmPtr cpu = dynamic_cast<CpuCas01LmmPtr>(
254 static_cast<ResourcePtr>(
255 surf_cpu_resource_priv(ind_vm_workstation)));
257 /* We deregister objects from host_lib, without invoking the freeing callback
260 * Do not call xbt_lib_remove() here. It deletes all levels of the key,
261 * including MSG_HOST_LEVEL and others. We should unregister only what we know.
263 xbt_lib_unset(host_lib, m_name, SURF_CPU_LEVEL, 0);
264 xbt_lib_unset(host_lib, m_name, ROUTING_HOST_LEVEL, 0);
265 xbt_lib_unset(host_lib, m_name, SURF_WKS_LEVEL, 0);
267 /* TODO: comment out when VM stroage is implemented. */
268 // xbt_lib_unset(host_lib, name, SURF_STORAGE_LEVEL, 0);
271 /* Free the cpu_action of the VM. */
272 int ret = p_action->unref();
273 xbt_assert(ret == 1, "Bug: some resource still remains");
275 /* Free the cpu resource of the VM. If using power_trace, we will have to
276 * free other objects than lmm_constraint. */
277 lmm_constraint_free(cpu->p_model->p_maxminSystem, cpu->p_constraint);
278 for (int i = 0; i < cpu->m_core; i++) {
279 void *cnst_id = cpu->p_constraintCore[i]->id;
280 lmm_constraint_free(cpu->p_model->p_maxminSystem, cpu->p_constraintCore[i]);
284 xbt_free(cpu->p_constraintCore);
288 /* Free the network resource of the VM. */
289 // Nothing has to be done, because net_elmts is just a pointer on the physical one
291 /* Free the storage resource of the VM. */
294 /* Free the workstation resource of the VM. */
297 e_surf_resource_state_t WorkstationVM2013Lmm::getState()
299 return (e_surf_resource_state_t) p_currentState;
302 void WorkstationVM2013Lmm::setState(e_surf_resource_state_t state)
304 p_currentState = (e_surf_vm_state_t) state;
307 void WorkstationVM2013Lmm::suspend()
310 p_currentState = SURF_VM_STATE_SUSPENDED;
313 void WorkstationVM2013Lmm::resume()
316 p_currentState = SURF_VM_STATE_RUNNING;
319 void WorkstationVM2013Lmm::save()
321 p_currentState = SURF_VM_STATE_SAVING;
323 /* FIXME: do something here */
325 p_currentState = SURF_VM_STATE_SAVED;
328 void WorkstationVM2013Lmm::restore()
330 p_currentState = SURF_VM_STATE_RESTORING;
332 /* FIXME: do something here */
334 p_currentState = SURF_VM_STATE_RUNNING;
338 * Update the physical host of the given VM
340 void WorkstationVM2013Lmm::migrate(surf_resource_t ind_dst_pm)
342 /* ind_phys_workstation equals to smx_host_t */
343 WorkstationCLM03Ptr ws_clm03_dst = dynamic_cast<WorkstationCLM03Ptr>(
344 static_cast<ResourcePtr>(
345 surf_workstation_resource_priv(ind_dst_pm)));
346 const char *vm_name = m_name;
347 const char *pm_name_src = p_subWs->m_name;
348 const char *pm_name_dst = ws_clm03_dst->m_name;
350 xbt_assert(ws_clm03_dst);
354 /* update net_elm with that of the destination physical host */
355 RoutingEdgePtr old_net_elm = p_netElm;
356 RoutingEdgePtr new_net_elm = static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, pm_name_dst, ROUTING_HOST_LEVEL));
357 xbt_assert(new_net_elm);
359 /* Unregister the current net_elm from host_lib. Do not call the free callback. */
360 xbt_lib_unset(host_lib, vm_name, ROUTING_HOST_LEVEL, 0);
362 /* Then, resister the new one. */
363 p_netElm = new_net_elm;
364 xbt_lib_set(host_lib, vm_name, ROUTING_HOST_LEVEL, p_netElm);
366 p_subWs = ws_clm03_dst;
368 /* Update vcpu's action for the new pm */
371 XBT_INFO("cpu_action->remains %g", p_action->remains);
372 XBT_INFO("cost %f remains %f start %f finish %f", p_action->cost,
377 XBT_INFO("cpu_action state %d", surf_action_get_state(p_action));
380 /* create a cpu action bound to the pm model at the destination. */
381 CpuActionLmmPtr new_cpu_action = dynamic_cast<CpuActionLmmPtr>(
382 dynamic_cast<CpuCas01LmmPtr>(
383 static_cast<ResourcePtr>(
384 surf_cpu_resource_priv(ind_dst_pm)))->execute(0));
386 e_surf_action_state_t state = surf_action_get_state(p_action);
387 if (state != SURF_ACTION_DONE)
388 XBT_CRITICAL("FIXME: may need a proper handling, %d", state);
389 if (p_action->m_remains > 0)
390 XBT_CRITICAL("FIXME: need copy the state(?), %f", p_action->m_remains);
392 int ret = p_action->unref();
393 xbt_assert(ret == 1, "Bug: some resource still remains");
395 p_action = new_cpu_action;
398 XBT_DEBUG("migrate VM(%s): change net_elm (%p to %p)", vm_name, old_net_elm, new_net_elm);
399 XBT_DEBUG("migrate VM(%s): change PM (%s to %s)", vm_name, pm_name_src, pm_name_dst);
402 void WorkstationVM2013Lmm::setBound(double bound){
403 p_action->setBound(bound);
406 void WorkstationVM2013Lmm::setAffinity(CpuLmmPtr cpu, unsigned long mask){
407 p_action->setAffinity(cpu, mask);
411 * A surf level object will be useless in the upper layer. Returing the
412 * dict_elm of the host.
414 surf_resource_t WorkstationVM2013Lmm::getPm()
416 return xbt_lib_get_elm_or_null(host_lib, p_subWs->m_name);
419 /* Adding a task to a VM updates the VCPU task on its physical machine. */
420 ActionPtr WorkstationVM2013Lmm::execute(double size)
422 double old_cost = p_action->m_cost;
423 double new_cost = old_cost + size;
425 XBT_DEBUG("VM(%s)@PM(%s): update dummy action's cost (%f -> %f)",
426 m_name, p_subWs->m_name,
429 p_action->m_cost = new_cost;
431 return WorkstationCLM03::execute(size);
438 //FIME:: handle action cancel