4 * Created on: Nov 12, 2013
7 #include "vm_workstation.hpp"
8 #include "cpu_cas01.hpp"
9 #include "maxmin_private.h"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
12 "Logging specific to the SURF VM workstation module");
14 WorkstationVMModelPtr surf_vm_workstation_model = NULL;
16 void surf_vm_workstation_model_init_current_default(void){
17 surf_vm_workstation_model = new WorkstationVMModel();
18 xbt_dynar_push(model_list, &surf_vm_workstation_model);
19 xbt_dynar_push(model_list_invoke, &surf_vm_workstation_model);
25 WorkstationVMModel::WorkstationVMModel() : WorkstationModel("Virtual Workstation") {
28 /* ind means ''indirect'' that this is a reference on the whole dict_elm
29 * structure (i.e not on the surf_resource_private infos) */
31 void WorkstationVMModel::createResource(const char *name, void *ind_phys_workstation)
33 WorkstationVM2013LmmPtr ws = new WorkstationVM2013Lmm(this, name, NULL, static_cast<surf_resource_t>(ind_phys_workstation));
35 xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, ws);
38 * - check how network requests are scheduled between distinct processes competing for the same card.
42 static inline double get_solved_value(CpuActionLmmPtr cpu_action)
44 return cpu_action->p_variable->value;
47 /* In the real world, processes on the guest operating system will be somewhat
48 * degraded due to virtualization overhead. The total CPU share that these
49 * processes get is smaller than that of the VM process gets on a host
50 * operating system. */
51 // const double virt_overhead = 0.95;
52 const double virt_overhead = 1;
54 double WorkstationVMModel::shareResources(double now)
56 /* TODO: udpate action's cost with the total cost of processes on the VM. */
59 /* 0. Make sure that we already calculated the resource share at the physical
62 unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, &surf_workstation_model);
63 unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, &surf_vm_workstation_model);
64 xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_workstation_model comes before");
66 /* Another option is that we call sub_ws->share_resource() here. The
67 * share_resource() function has no side-effect. We can call it here to
72 /* 1. Now we know how many resource should be assigned to each virtual
73 * machine. We update constraints of the virtual machine layer.
76 * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
77 * X1 + X2 = C (Equation 1)
79 * the resource share of VM1: X1
80 * the resource share of VM2: X2
81 * the capacity of PM1: C
83 * Then, if we have two process (P1 and P2) on VM1.
84 * X1_1 + X1_2 = X1 (Equation 2)
86 * the resource share of P1: X1_1
87 * the resource share of P2: X1_2
88 * the capacity of VM1: X1
90 * Equation 1 was solved in the physical machine layer.
91 * Equation 2 is solved in the virtual machine layer (here).
92 * X1 must be passed to the virtual machine laye as a constraint value.
96 /* iterate for all hosts including virtual machines */
97 xbt_lib_cursor_t cursor;
100 xbt_lib_foreach(host_lib, cursor, key, ind_host) {
101 WorkstationCLM03Ptr ws_clm03 = dynamic_cast<WorkstationCLM03Ptr>(
102 static_cast<ResourcePtr>(ind_host[SURF_WKS_LEVEL]));
103 CpuCas01LmmPtr cpu_cas01 = dynamic_cast<CpuCas01LmmPtr>(
104 static_cast<ResourcePtr>(ind_host[SURF_CPU_LEVEL]));
108 /* skip if it is not a virtual machine */
109 if (ws_clm03->p_model != static_cast<ModelPtr>(surf_vm_workstation_model))
111 xbt_assert(cpu_cas01, "cpu-less workstation");
113 /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
114 WorkstationVM2013Ptr ws_vm2013 = dynamic_cast<WorkstationVM2013Ptr>(ws_clm03);
116 double solved_value = get_solved_value(ws_vm2013->p_action);
117 XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
118 ws_clm03->m_name, ws_vm2013->p_subWs->m_name);
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_cas01->p_model == static_cast<ModelPtr>(surf_cpu_model_vm));
123 lmm_system_t vcpu_system = cpu_cas01->p_model->p_maxminSystem;
124 lmm_update_constraint_bound(vcpu_system, cpu_cas01->p_constraint, virt_overhead * solved_value);
128 /* 2. Calculate resource share at the virtual machine layer. */
129 double ret = WorkstationModel::shareResources(now);
132 /* FIXME: 3. do we have to re-initialize our cpu_action object? */
134 /* iterate for all hosts including virtual machines */
135 xbt_lib_foreach(host_lib, cursor, key, ind_host) {
136 WorkstationCLM03Ptr ws_clm03 = ind_host[SURF_WKS_LEVEL];
138 /* skip if it is not a virtual machine */
141 if (ws_clm03->p_model != surf_vm_workstation_model)
144 /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
147 WorkstationVM2013Ptr ws_vm2013 = (workstation_VM2013_t) ws_clm03;
148 XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
149 ws_vm2013->cpu_action->remains,
150 ws_vm2013->cpu_action->start,
151 ws_vm2013->cpu_action->finish
155 void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.name);
156 surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
157 /* FIXME: this means busy loop? */
158 // ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, GUESTOS_NOISE);
159 ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 0);
174 WorkstationVM2013Lmm::WorkstationVM2013Lmm(WorkstationVMModelPtr model, const char* name, xbt_dict_t props,
175 surf_resource_t ind_phys_workstation)
176 : WorkstationVM2013(model, name, props, NULL, NULL),
177 WorkstationCLM03Lmm(model, name, props, NULL, NULL, NULL),
178 WorkstationCLM03(model, name, props, NULL, NULL, NULL),
179 Resource(model, name, props) {
180 WorkstationCLM03Ptr sub_ws = dynamic_cast<WorkstationCLM03Ptr>(
181 static_cast<ResourcePtr>(
182 surf_workstation_resource_priv(ind_phys_workstation)));
184 /* Currently, we assume a VM has no storage. */
187 /* Currently, a VM uses the network resource of its physical host. In
188 * host_lib, this network resource object is refered from two different keys.
189 * When deregistering the reference that points the network resource object
190 * from the VM name, we have to make sure that the system does not call the
191 * free callback for the network resource object. The network resource object
192 * is still used by the physical machine. */
193 p_netElm = static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, sub_ws->m_name, ROUTING_HOST_LEVEL));
194 xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, p_netElm);
197 p_currentState = SURF_VM_STATE_CREATED;
199 // //// CPU RELATED STUFF ////
200 // Roughly, create a vcpu resource by using the values of the sub_cpu one.
201 CpuCas01LmmPtr sub_cpu = dynamic_cast<CpuCas01LmmPtr>(
202 static_cast<ResourcePtr>(
203 surf_cpu_resource_priv(ind_phys_workstation)));
205 /* We can assume one core and cas01 cpu for the first step.
206 * Do xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu) if you get the resource. */
208 static_cast<CpuCas01ModelPtr>(surf_cpu_model_vm)->createResource(name, // name
209 sub_cpu->p_powerPeakList, // host->power_peak,
211 1, // host->power_scale,
212 NULL, // host->power_trace,
213 1, // host->core_amount,
214 SURF_RESOURCE_ON, // host->initial_state,
215 NULL, // host->state_trace,
216 NULL); // host->properties,
218 /* We create cpu_action corresponding to a VM process on the host operating system. */
219 /* FIXME: TODO: we have to peridocally input GUESTOS_NOISE to the system? how ? */
220 // vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, GUESTOS_NOISE);
221 p_action = dynamic_cast<CpuActionLmmPtr>(sub_cpu->execute(0));
223 /* The SURF_WKS_LEVEL at host_lib saves workstation_CLM03 objects. Please
224 * note workstation_VM2013 objects, inheriting the workstation_CLM03
225 * structure, are also saved there.
227 * If you want to get a workstation_VM2013 object from host_lib, see
228 * ws->generic_resouce.model->type first. If it is
229 * SURF_MODEL_TYPE_VM_WORKSTATION, you can cast ws to vm_ws. */
230 XBT_INFO("Create VM(%s)@PM(%s) with %ld mounted disks", name, sub_ws->m_name, xbt_dynar_length(p_storage));
234 * A physical host does not disapper in the current SimGrid code, but a VM may
235 * disapper during a simulation.
237 WorkstationVM2013Lmm::~WorkstationVM2013Lmm()
239 /* ind_phys_workstation equals to smx_host_t */
240 surf_resource_t ind_vm_workstation = xbt_lib_get_elm_or_null(host_lib, m_name);
242 /* Before clearing the entries in host_lib, we have to pick up resources. */
243 CpuCas01LmmPtr cpu = dynamic_cast<CpuCas01LmmPtr>(
244 static_cast<ResourcePtr>(
245 surf_cpu_resource_priv(ind_vm_workstation)));
247 /* We deregister objects from host_lib, without invoking the freeing callback
250 * Do not call xbt_lib_remove() here. It deletes all levels of the key,
251 * including MSG_HOST_LEVEL and others. We should unregister only what we know.
253 xbt_lib_unset(host_lib, m_name, SURF_CPU_LEVEL, 0);
254 xbt_lib_unset(host_lib, m_name, ROUTING_HOST_LEVEL, 0);
255 xbt_lib_unset(host_lib, m_name, SURF_WKS_LEVEL, 0);
257 /* TODO: comment out when VM stroage is implemented. */
258 // xbt_lib_unset(host_lib, name, SURF_STORAGE_LEVEL, 0);
261 /* Free the cpu_action of the VM. */
262 int ret = p_action->unref();
263 xbt_assert(ret == 1, "Bug: some resource still remains");
265 /* Free the cpu resource of the VM. If using power_trace, we will have to
266 * free other objects than lmm_constraint. */
267 lmm_constraint_free(cpu->p_model->p_maxminSystem, cpu->p_constraint);
270 for (i = 0; i < cpu->m_core; i++) {
271 void *cnst_id = cpu->p_constraintCore[i]->id;
272 lmm_constraint_free(cpu->p_model->p_maxminSystem, cpu->p_constraintCore[i]);
276 xbt_free(cpu->p_constraintCore);
281 /* Free the network resource of the VM. */
282 // Nothing has to be done, because net_elmts is just a pointer on the physical one
284 /* Free the storage resource of the VM. */
287 /* Free the workstation resource of the VM. */
290 e_surf_resource_state_t WorkstationVM2013Lmm::getState()
292 return (e_surf_resource_state_t) p_currentState;
295 void WorkstationVM2013Lmm::setState(e_surf_resource_state_t state)
297 p_currentState = (e_surf_vm_state_t) state;
300 void WorkstationVM2013Lmm::suspend()
303 p_currentState = SURF_VM_STATE_SUSPENDED;
306 void WorkstationVM2013Lmm::resume()
309 p_currentState = SURF_VM_STATE_RUNNING;
312 void WorkstationVM2013Lmm::save()
314 p_currentState = SURF_VM_STATE_SAVING;
316 /* FIXME: do something here */
318 p_currentState = SURF_VM_STATE_SAVED;
321 void WorkstationVM2013Lmm::restore()
323 p_currentState = SURF_VM_STATE_RESTORING;
325 /* FIXME: do something here */
327 p_currentState = SURF_VM_STATE_RUNNING;
331 * Update the physical host of the given VM
333 void WorkstationVM2013Lmm::migrate(surf_resource_t ind_dst_pm)
335 /* ind_phys_workstation equals to smx_host_t */
336 WorkstationCLM03Ptr ws_clm03_dst = dynamic_cast<WorkstationCLM03Ptr>(
337 static_cast<ResourcePtr>(
338 surf_workstation_resource_priv(ind_dst_pm)));
339 const char *vm_name = m_name;
340 const char *pm_name_src = p_subWs->m_name;
341 const char *pm_name_dst = ws_clm03_dst->m_name;
343 xbt_assert(ws_clm03_dst);
347 /* update net_elm with that of the destination physical host */
348 RoutingEdgePtr old_net_elm = p_netElm;
349 RoutingEdgePtr new_net_elm = static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, pm_name_dst, ROUTING_HOST_LEVEL));
350 xbt_assert(new_net_elm);
352 /* Unregister the current net_elm from host_lib. Do not call the free callback. */
353 xbt_lib_unset(host_lib, vm_name, ROUTING_HOST_LEVEL, 0);
355 /* Then, resister the new one. */
356 p_netElm = new_net_elm;
357 xbt_lib_set(host_lib, vm_name, ROUTING_HOST_LEVEL, p_netElm);
359 p_subWs = ws_clm03_dst;
361 /* Update vcpu's action for the new pm */
364 XBT_INFO("cpu_action->remains %g", p_action->remains);
365 XBT_INFO("cost %f remains %f start %f finish %f", p_action->cost,
370 XBT_INFO("cpu_action state %d", surf_action_get_state(p_action));
373 /* create a cpu action bound to the pm model at the destination. */
374 CpuActionLmmPtr new_cpu_action = dynamic_cast<CpuActionLmmPtr>(
375 dynamic_cast<CpuCas01LmmPtr>(
376 static_cast<ResourcePtr>(
377 surf_cpu_resource_priv(ind_dst_pm)))->execute(0));
379 e_surf_action_state_t state = surf_action_get_state(p_action);
380 if (state != SURF_ACTION_DONE)
381 XBT_CRITICAL("FIXME: may need a proper handling, %d", state);
382 if (p_action->m_remains > 0)
383 XBT_CRITICAL("FIXME: need copy the state(?), %f", p_action->m_remains);
385 int ret = p_action->unref();
386 xbt_assert(ret == 1, "Bug: some resource still remains");
388 p_action = new_cpu_action;
391 XBT_DEBUG("migrate VM(%s): change net_elm (%p to %p)", vm_name, old_net_elm, new_net_elm);
392 XBT_DEBUG("migrate VM(%s): change PM (%s to %s)", vm_name, pm_name_src, pm_name_dst);
395 void WorkstationVM2013Lmm::setBound(double bound){
396 p_action->setBound(bound);
399 void WorkstationVM2013Lmm::setAffinity(CpuLmmPtr cpu, unsigned long mask){
400 p_action->setAffinity(cpu, mask);
404 * A surf level object will be useless in the upper layer. Returing the
405 * dict_elm of the host.
407 surf_resource_t WorkstationVM2013Lmm::getPm()
409 return xbt_lib_get_elm_or_null(host_lib, p_subWs->m_name);
412 /* Adding a task to a VM updates the VCPU task on its physical machine. */
413 ActionPtr WorkstationVM2013Lmm::execute(double size)
415 double old_cost = p_action->m_cost;
416 double new_cost = old_cost + size;
418 XBT_DEBUG("VM(%s)@PM(%s): update dummy action's cost (%f -> %f)",
419 m_name, p_subWs->m_name,
422 p_action->m_cost = new_cost;
424 return WorkstationCLM03::execute(size);
431 //FIME:: handle action cancel