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 "cpu_cas01.hpp"
10 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_vm);
12 void surf_vm_model_init_HL13(void){
13 if (surf_cpu_model_vm) {
14 surf_vm_model = new VMHL13Model();
15 Model *model = surf_vm_model;
17 xbt_dynar_push(model_list, &model);
18 xbt_dynar_push(model_list_invoke, &model);
26 VMHL13Model::VMHL13Model() : VMModel() {}
28 void VMHL13Model::updateActionsState(double /*now*/, double /*delta*/) {}
30 /* ind means ''indirect'' that this is a reference on the whole dict_elm
31 * structure (i.e not on the surf_resource_private infos) */
33 VM *VMHL13Model::createVM(const char *name, surf_resource_t host_PM)
35 VMHL13 *ws = new VMHL13(this, name, NULL, host_PM);
37 xbt_lib_set(host_lib, name, SURF_HOST_LEVEL, ws);
40 * - check how network requests are scheduled between distinct processes competing for the same card.
45 static inline double get_solved_value(CpuAction *cpu_action)
47 return cpu_action->getVariable()->value;
50 /* In the real world, processes on the guest operating system will be somewhat
51 * degraded due to virtualization overhead. The total CPU share that these
52 * processes get is smaller than that of the VM process gets on a host
53 * operating system. */
54 // const double virt_overhead = 0.95;
55 const double virt_overhead = 1;
57 double VMHL13Model::shareResources(double now)
59 /* TODO: udpate action's cost with the total cost of processes on the VM. */
62 /* 0. Make sure that we already calculated the resource share at the physical
65 _XBT_GNUC_UNUSED Model *ws_model = surf_host_model;
66 _XBT_GNUC_UNUSED Model *vm_ws_model = surf_vm_model;
67 _XBT_GNUC_UNUSED unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, &ws_model);
68 _XBT_GNUC_UNUSED unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, &vm_ws_model);
69 xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_host_model comes before");
71 /* Another option is that we call sub_ws->share_resource() here. The
72 * share_resource() function has no side-effect. We can call it here to
77 /* 1. Now we know how many resource should be assigned to each virtual
78 * machine. We update constraints of the virtual machine layer.
81 * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
82 * X1 + X2 = C (Equation 1)
84 * the resource share of VM1: X1
85 * the resource share of VM2: X2
86 * the capacity of PM1: C
88 * Then, if we have two process (P1 and P2) on VM1.
89 * X1_1 + X1_2 = X1 (Equation 2)
91 * the resource share of P1: X1_1
92 * the resource share of P2: X1_2
93 * the capacity of VM1: X1
95 * Equation 1 was solved in the physical machine layer.
96 * Equation 2 is solved in the virtual machine layer (here).
97 * X1 must be passed to the virtual machine laye as a constraint value.
101 /* iterate for all virtual machines */
102 for (VMModel::vm_list_t::iterator iter =
103 VMModel::ws_vms.begin();
104 iter != VMModel::ws_vms.end(); ++iter) {
107 Cpu *cpu = ws_vm->p_cpu;
108 xbt_assert(cpu, "cpu-less host");
110 double solved_value = get_solved_value(ws_vm->p_action);
111 XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
112 ws_vm->getName(), ws_vm->p_subWs->getName());
114 // TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
115 // cpu_cas01->constraint->bound = solved_value;
116 xbt_assert(cpu->getModel() == surf_cpu_model_vm);
117 lmm_system_t vcpu_system = cpu->getModel()->getMaxminSystem();
118 lmm_update_constraint_bound(vcpu_system, cpu->getConstraint(), virt_overhead * solved_value);
122 /* 2. Calculate resource share at the virtual machine layer. */
123 adjustWeightOfDummyCpuActions();
125 double min_by_cpu = surf_cpu_model_vm->shareResources(now);
126 double min_by_net = surf_network_model->shareResourcesIsIdempotent() ? surf_network_model->shareResources(now) : -1;
127 // Fixme: take storage into account once it's implemented
128 double min_by_sto = -1;
130 XBT_DEBUG("model %p, %s min_by_cpu %f, %s min_by_net %f, %s min_by_sto %f",
131 this, typeid(surf_cpu_model_pm ).name(), min_by_cpu,
132 typeid(surf_network_model).name(), min_by_net,
133 typeid(surf_storage_model).name(), min_by_sto);
135 double ret = max(max(min_by_cpu, min_by_net), min_by_sto);
136 if (min_by_cpu >= 0.0 && min_by_cpu < ret)
138 if (min_by_net >= 0.0 && min_by_net < ret)
140 if (min_by_sto >= 0.0 && min_by_sto < ret)
143 /* FIXME: 3. do we have to re-initialize our cpu_action object? */
145 /* iterate for all virtual machines */
146 for (VMModel::vm_list_t::iterator iter =
147 VMModel::ws_vms.begin();
148 iter != VMModel::ws_vms.end(); ++iter) {
152 VM2013 *ws_vm2013 = static_cast<VM2013Ptr>(&*iter);
153 XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
154 ws_vm2013->cpu_action->remains,
155 ws_vm2013->cpu_action->start,
156 ws_vm2013->cpu_action->finish
160 void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.getName);
161 surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
162 /* FIXME: this means busy loop? */
163 // ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, GUESTOS_NOISE);
164 ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 0);
175 Action *VMHL13Model::executeParallelTask(int host_nb,
176 sg_host_t *host_list,
177 double *flops_amount,
178 double *bytes_amount,
180 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
182 && (cost_or_zero(bytes_amount, 0) == 0.0))
183 return surf_host_execute(host_list[0], flops_amount[0]);
184 else if ((host_nb == 1)
185 && (cost_or_zero(flops_amount, 0) == 0.0))
186 return surf_network_model_communicate(surf_network_model, host_list[0], host_list[0],bytes_amount[0], rate);
187 else if ((host_nb == 2)
188 && (cost_or_zero(flops_amount, 0) == 0.0)
189 && (cost_or_zero(flops_amount, 1) == 0.0)) {
193 for (i = 0; i < host_nb * host_nb; i++) {
194 if (cost_or_zero(bytes_amount, i) > 0.0) {
196 value = cost_or_zero(bytes_amount, i);
200 return surf_network_model_communicate(surf_network_model, host_list[0], host_list[1], value, rate);
204 THROW_UNIMPLEMENTED; /* This model does not implement parallel tasks for more than 2 hosts. */
212 VMHL13::VMHL13(VMModel *model, const char* name, xbt_dict_t props,
213 surf_resource_t host_PM)
214 : VM(model, name, props, NULL, NULL)
216 Host *sub_ws = static_cast<Host*>(surf_host_resource_priv(host_PM));
218 /* Currently, we assume a VM has no storage. */
221 /* Currently, a VM uses the network resource of its physical host. In
222 * host_lib, this network resource object is referred from two different keys.
223 * When deregistering the reference that points the network resource object
224 * from the VM name, we have to make sure that the system does not call the
225 * free callback for the network resource object. The network resource object
226 * is still used by the physical machine. */
227 sg_host_t sg_sub_ws = sg_host_by_name_or_create(sub_ws->getName());
228 p_netElm = new RoutingEdgeWrapper(sg_host_edge(sg_sub_ws));
229 sg_host_edge_set(sg_host_by_name_or_create(name), p_netElm);
232 p_currentState = SURF_VM_STATE_CREATED;
234 // //// CPU RELATED STUFF ////
235 // Roughly, create a vcpu resource by using the values of the sub_cpu one.
236 CpuCas01 *sub_cpu = static_cast<CpuCas01*>(sg_host_surfcpu(host_PM));
238 p_cpu = surf_cpu_model_vm->createCpu(name, // name
239 sub_cpu->getPowerPeakList(), // host->power_peak,
240 sub_cpu->getPState(),
241 1, // host->power_scale,
242 NULL, // host->power_trace,
243 1, // host->core_amount,
244 SURF_RESOURCE_ON, // host->initial_state,
245 NULL, // host->state_trace,
246 NULL); // host->properties,
248 /* We create cpu_action corresponding to a VM process on the host operating system. */
249 /* FIXME: TODO: we have to periodically input GUESTOS_NOISE to the system? how ? */
250 // vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(host_PM, GUESTOS_NOISE);
251 p_action = sub_cpu->execute(0);
253 XBT_INFO("Create VM(%s)@PM(%s) with %ld mounted disks", name, sub_ws->getName(), xbt_dynar_length(p_storage));
257 * A physical host does not disappear in the current SimGrid code, but a VM may
258 * disappear during a simulation.
262 /* Free the cpu_action of the VM. */
263 _XBT_GNUC_UNUSED int ret = p_action->unref();
264 xbt_assert(ret == 1, "Bug: some resource still remains");
267 void VMHL13::updateState(tmgr_trace_event_t /*event_type*/, double /*value*/, double /*date*/) {
268 THROW_IMPOSSIBLE; /* This model does not implement parallel tasks */
271 bool VMHL13::isUsed() {
272 THROW_IMPOSSIBLE; /* This model does not implement parallel tasks */
276 e_surf_resource_state_t VMHL13::getState()
278 return (e_surf_resource_state_t) p_currentState;
281 void VMHL13::setState(e_surf_resource_state_t state)
283 p_currentState = (e_surf_vm_state_t) state;
286 void VMHL13::suspend()
289 p_currentState = SURF_VM_STATE_SUSPENDED;
292 void VMHL13::resume()
295 p_currentState = SURF_VM_STATE_RUNNING;
300 p_currentState = SURF_VM_STATE_SAVING;
302 /* FIXME: do something here */
304 p_currentState = SURF_VM_STATE_SAVED;
307 void VMHL13::restore()
309 p_currentState = SURF_VM_STATE_RESTORING;
311 /* FIXME: do something here */
313 p_currentState = SURF_VM_STATE_RUNNING;
317 * Update the physical host of the given VM
319 void VMHL13::migrate(surf_resource_t ind_dst_pm)
321 /* ind_dst_pm equals to smx_host_t */
322 Host *ws_dst = static_cast<Host*>(surf_host_resource_priv(ind_dst_pm));
323 const char *vm_name = getName();
324 const char *pm_name_src = p_subWs->getName();
325 const char *pm_name_dst = ws_dst->getName();
329 /* update net_elm with that of the destination physical host */
330 RoutingEdge *old_net_elm = p_netElm;
331 RoutingEdge *new_net_elm = new RoutingEdgeWrapper(sg_host_edge(sg_host_by_name(pm_name_dst)));
332 xbt_assert(new_net_elm);
334 /* Unregister the current net_elm from host_lib. Do not call the free callback. */
335 sg_host_edge_destroy(sg_host_by_name(vm_name), 0);
337 /* Then, resister the new one. */
338 p_netElm = new_net_elm;
339 sg_host_edge_set(sg_host_by_name(vm_name), p_netElm);
343 /* Update vcpu's action for the new pm */
346 XBT_INFO("cpu_action->remains %g", p_action->remains);
347 XBT_INFO("cost %f remains %f start %f finish %f", p_action->cost,
352 XBT_INFO("cpu_action state %d", surf_action_get_state(p_action));
355 /* create a cpu action bound to the pm model at the destination. */
356 CpuAction *new_cpu_action = static_cast<CpuAction*>(
357 static_cast<Cpu*>(sg_host_surfcpu(ind_dst_pm))->execute(0));
359 e_surf_action_state_t state = p_action->getState();
360 if (state != SURF_ACTION_DONE)
361 XBT_CRITICAL("FIXME: may need a proper handling, %d", state);
362 if (p_action->getRemainsNoUpdate() > 0)
363 XBT_CRITICAL("FIXME: need copy the state(?), %f", p_action->getRemainsNoUpdate());
365 /* keep the bound value of the cpu action of the VM. */
366 double old_bound = p_action->getBound();
367 if (old_bound != 0) {
368 XBT_DEBUG("migrate VM(%s): set bound (%f) at %s", vm_name, old_bound, pm_name_dst);
369 new_cpu_action->setBound(old_bound);
372 _XBT_GNUC_UNUSED int ret = p_action->unref();
373 xbt_assert(ret == 1, "Bug: some resource still remains");
375 p_action = new_cpu_action;
378 XBT_DEBUG("migrate VM(%s): change net_elm (%p to %p)", vm_name, old_net_elm, new_net_elm);
379 XBT_DEBUG("migrate VM(%s): change PM (%s to %s)", vm_name, pm_name_src, pm_name_dst);
383 void VMHL13::setBound(double bound){
384 p_action->setBound(bound);
387 void VMHL13::setAffinity(Cpu *cpu, unsigned long mask){
388 p_action->setAffinity(cpu, mask);
392 * A surf level object will be useless in the upper layer. Returning the
393 * dict_elm of the host.
395 surf_resource_t VMHL13::getPm()
397 return xbt_lib_get_elm_or_null(host_lib, p_subWs->getName());
400 /* Adding a task to a VM updates the VCPU task on its physical machine. */
401 Action *VMHL13::execute(double size)
403 double old_cost = p_action->getCost();
404 double new_cost = old_cost + size;
406 XBT_DEBUG("VM(%s)@PM(%s): update dummy action's cost (%f -> %f)",
407 getName(), p_subWs->getName(),
410 p_action->setCost(new_cost);
412 return p_cpu->execute(size);
415 Action *VMHL13::sleep(double duration) {
416 return p_cpu->sleep(duration);
423 //FIME:: handle action cancel