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 Action *VMHL13Model::communicate(Host *src, Host *dst, double size, double rate){
31 return surf_network_model->communicate(src->p_netElm, dst->p_netElm, size, rate);
34 /* ind means ''indirect'' that this is a reference on the whole dict_elm
35 * structure (i.e not on the surf_resource_private infos) */
37 VM *VMHL13Model::createVM(const char *name, surf_resource_t host_PM)
39 VMHL13 *ws = new VMHL13(this, name, NULL, host_PM);
41 xbt_lib_set(host_lib, name, SURF_HOST_LEVEL, ws);
44 * - check how network requests are scheduled between distinct processes competing for the same card.
49 static inline double get_solved_value(CpuAction *cpu_action)
51 return cpu_action->getVariable()->value;
54 /* In the real world, processes on the guest operating system will be somewhat
55 * degraded due to virtualization overhead. The total CPU share that these
56 * processes get is smaller than that of the VM process gets on a host
57 * operating system. */
58 // const double virt_overhead = 0.95;
59 const double virt_overhead = 1;
61 double VMHL13Model::shareResources(double now)
63 /* TODO: udpate action's cost with the total cost of processes on the VM. */
66 /* 0. Make sure that we already calculated the resource share at the physical
69 _XBT_GNUC_UNUSED Model *ws_model = surf_host_model;
70 _XBT_GNUC_UNUSED Model *vm_ws_model = surf_vm_model;
71 _XBT_GNUC_UNUSED unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, &ws_model);
72 _XBT_GNUC_UNUSED unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, &vm_ws_model);
73 xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_host_model comes before");
75 /* Another option is that we call sub_ws->share_resource() here. The
76 * share_resource() function has no side-effect. We can call it here to
81 /* 1. Now we know how many resource should be assigned to each virtual
82 * machine. We update constraints of the virtual machine layer.
85 * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
86 * X1 + X2 = C (Equation 1)
88 * the resource share of VM1: X1
89 * the resource share of VM2: X2
90 * the capacity of PM1: C
92 * Then, if we have two process (P1 and P2) on VM1.
93 * X1_1 + X1_2 = X1 (Equation 2)
95 * the resource share of P1: X1_1
96 * the resource share of P2: X1_2
97 * the capacity of VM1: X1
99 * Equation 1 was solved in the physical machine layer.
100 * Equation 2 is solved in the virtual machine layer (here).
101 * X1 must be passed to the virtual machine laye as a constraint value.
105 /* iterate for all virtual machines */
106 for (VMModel::vm_list_t::iterator iter =
107 VMModel::ws_vms.begin();
108 iter != VMModel::ws_vms.end(); ++iter) {
111 Cpu *cpu = ws_vm->p_cpu;
112 xbt_assert(cpu, "cpu-less host");
114 double solved_value = get_solved_value(ws_vm->p_action);
115 XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
116 ws_vm->getName(), ws_vm->p_subWs->getName());
118 // TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
119 // cpu_cas01->constraint->bound = solved_value;
120 xbt_assert(cpu->getModel() == surf_cpu_model_vm);
121 lmm_system_t vcpu_system = cpu->getModel()->getMaxminSystem();
122 lmm_update_constraint_bound(vcpu_system, cpu->getConstraint(), virt_overhead * solved_value);
126 /* 2. Calculate resource share at the virtual machine layer. */
127 adjustWeightOfDummyCpuActions();
129 double min_by_cpu = surf_cpu_model_vm->shareResources(now);
130 double min_by_net = (strcmp(surf_network_model->getName(), "network NS3")) ? surf_network_model->shareResources(now) : -1;
131 // Fixme: take storage into account once it's implemented
132 double min_by_sto = -1;
134 XBT_DEBUG("model %p, %s min_by_cpu %f, %s min_by_net %f, %s min_by_sto %f",
135 this, typeid(surf_cpu_model_pm ).name(), min_by_cpu,
136 typeid(surf_network_model).name(), min_by_net,
137 typeid(surf_storage_model).name(), min_by_sto);
139 double ret = max(max(min_by_cpu, min_by_net), min_by_sto);
140 if (min_by_cpu >= 0.0 && min_by_cpu < ret)
142 if (min_by_net >= 0.0 && min_by_net < ret)
144 if (min_by_sto >= 0.0 && min_by_sto < ret)
147 /* FIXME: 3. do we have to re-initialize our cpu_action object? */
149 /* iterate for all virtual machines */
150 for (VMModel::vm_list_t::iterator iter =
151 VMModel::ws_vms.begin();
152 iter != VMModel::ws_vms.end(); ++iter) {
156 VM2013 *ws_vm2013 = static_cast<VM2013Ptr>(&*iter);
157 XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
158 ws_vm2013->cpu_action->remains,
159 ws_vm2013->cpu_action->start,
160 ws_vm2013->cpu_action->finish
164 void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.getName);
165 surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
166 /* FIXME: this means busy loop? */
167 // ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, GUESTOS_NOISE);
168 ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 0);
179 Action *VMHL13Model::executeParallelTask(int host_nb,
181 double *flops_amount,
182 double *bytes_amount,
184 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
186 && (cost_or_zero(bytes_amount, 0) == 0.0))
187 return static_cast<HostCLM03*>(host_list[0])->execute(flops_amount[0]);
188 else if ((host_nb == 1)
189 && (cost_or_zero(flops_amount, 0) == 0.0))
190 return communicate(static_cast<HostCLM03*>(host_list[0]), static_cast<HostCLM03*>(host_list[0]),bytes_amount[0], rate);
191 else if ((host_nb == 2)
192 && (cost_or_zero(flops_amount, 0) == 0.0)
193 && (cost_or_zero(flops_amount, 1) == 0.0)) {
197 for (i = 0; i < host_nb * host_nb; i++) {
198 if (cost_or_zero(bytes_amount, i) > 0.0) {
200 value = cost_or_zero(bytes_amount, i);
204 return communicate(static_cast<HostCLM03*>(host_list[0]), static_cast<HostCLM03*>(host_list[1]),value, rate);
208 THROW_UNIMPLEMENTED; /* This model does not implement parallel tasks */
216 VMHL13::VMHL13(VMModel *model, const char* name, xbt_dict_t props,
217 surf_resource_t host_PM)
218 : VM(model, name, props, NULL, NULL)
220 Host *sub_ws = static_cast<Host*>(surf_host_resource_priv(host_PM));
222 /* Currently, we assume a VM has no storage. */
225 /* Currently, a VM uses the network resource of its physical host. In
226 * host_lib, this network resource object is referred from two different keys.
227 * When deregistering the reference that points the network resource object
228 * from the VM name, we have to make sure that the system does not call the
229 * free callback for the network resource object. The network resource object
230 * is still used by the physical machine. */
231 sg_host_t sg_sub_ws = sg_host_by_name_or_create(sub_ws->getName());
232 p_netElm = new RoutingEdgeWrapper(sg_host_edge(sg_sub_ws));
233 sg_host_edge_set(sg_host_by_name_or_create(name), p_netElm);
236 p_currentState = SURF_VM_STATE_CREATED;
238 // //// CPU RELATED STUFF ////
239 // Roughly, create a vcpu resource by using the values of the sub_cpu one.
240 CpuCas01 *sub_cpu = static_cast<CpuCas01*>(sg_host_surfcpu(host_PM));
242 p_cpu = surf_cpu_model_vm->createCpu(name, // name
243 sub_cpu->getPowerPeakList(), // host->power_peak,
244 sub_cpu->getPState(),
245 1, // host->power_scale,
246 NULL, // host->power_trace,
247 1, // host->core_amount,
248 SURF_RESOURCE_ON, // host->initial_state,
249 NULL, // host->state_trace,
250 NULL); // host->properties,
252 /* We create cpu_action corresponding to a VM process on the host operating system. */
253 /* FIXME: TODO: we have to periodically input GUESTOS_NOISE to the system? how ? */
254 // vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(host_PM, GUESTOS_NOISE);
255 p_action = sub_cpu->execute(0);
257 XBT_INFO("Create VM(%s)@PM(%s) with %ld mounted disks", name, sub_ws->getName(), xbt_dynar_length(p_storage));
261 * A physical host does not disappear in the current SimGrid code, but a VM may
262 * disappear during a simulation.
266 /* Free the cpu_action of the VM. */
267 _XBT_GNUC_UNUSED int ret = p_action->unref();
268 xbt_assert(ret == 1, "Bug: some resource still remains");
271 void VMHL13::updateState(tmgr_trace_event_t /*event_type*/, double /*value*/, double /*date*/) {
272 THROW_IMPOSSIBLE; /* This model does not implement parallel tasks */
275 bool VMHL13::isUsed() {
276 THROW_IMPOSSIBLE; /* This model does not implement parallel tasks */
280 e_surf_resource_state_t VMHL13::getState()
282 return (e_surf_resource_state_t) p_currentState;
285 void VMHL13::setState(e_surf_resource_state_t state)
287 p_currentState = (e_surf_vm_state_t) state;
290 void VMHL13::suspend()
293 p_currentState = SURF_VM_STATE_SUSPENDED;
296 void VMHL13::resume()
299 p_currentState = SURF_VM_STATE_RUNNING;
304 p_currentState = SURF_VM_STATE_SAVING;
306 /* FIXME: do something here */
308 p_currentState = SURF_VM_STATE_SAVED;
311 void VMHL13::restore()
313 p_currentState = SURF_VM_STATE_RESTORING;
315 /* FIXME: do something here */
317 p_currentState = SURF_VM_STATE_RUNNING;
321 * Update the physical host of the given VM
323 void VMHL13::migrate(surf_resource_t ind_dst_pm)
325 /* ind_dst_pm equals to smx_host_t */
326 Host *ws_dst = static_cast<Host*>(surf_host_resource_priv(ind_dst_pm));
327 const char *vm_name = getName();
328 const char *pm_name_src = p_subWs->getName();
329 const char *pm_name_dst = ws_dst->getName();
333 /* update net_elm with that of the destination physical host */
334 RoutingEdge *old_net_elm = p_netElm;
335 RoutingEdge *new_net_elm = new RoutingEdgeWrapper(sg_host_edge(sg_host_by_name(pm_name_dst)));
336 xbt_assert(new_net_elm);
338 /* Unregister the current net_elm from host_lib. Do not call the free callback. */
339 sg_host_edge_destroy(sg_host_by_name(vm_name), 0);
341 /* Then, resister the new one. */
342 p_netElm = new_net_elm;
343 sg_host_edge_set(sg_host_by_name(vm_name), p_netElm);
347 /* Update vcpu's action for the new pm */
350 XBT_INFO("cpu_action->remains %g", p_action->remains);
351 XBT_INFO("cost %f remains %f start %f finish %f", p_action->cost,
356 XBT_INFO("cpu_action state %d", surf_action_get_state(p_action));
359 /* create a cpu action bound to the pm model at the destination. */
360 CpuAction *new_cpu_action = static_cast<CpuAction*>(
361 static_cast<Cpu*>(sg_host_surfcpu(ind_dst_pm))->execute(0));
363 e_surf_action_state_t state = p_action->getState();
364 if (state != SURF_ACTION_DONE)
365 XBT_CRITICAL("FIXME: may need a proper handling, %d", state);
366 if (p_action->getRemainsNoUpdate() > 0)
367 XBT_CRITICAL("FIXME: need copy the state(?), %f", p_action->getRemainsNoUpdate());
369 /* keep the bound value of the cpu action of the VM. */
370 double old_bound = p_action->getBound();
371 if (old_bound != 0) {
372 XBT_DEBUG("migrate VM(%s): set bound (%f) at %s", vm_name, old_bound, pm_name_dst);
373 new_cpu_action->setBound(old_bound);
376 _XBT_GNUC_UNUSED int ret = p_action->unref();
377 xbt_assert(ret == 1, "Bug: some resource still remains");
379 p_action = new_cpu_action;
382 XBT_DEBUG("migrate VM(%s): change net_elm (%p to %p)", vm_name, old_net_elm, new_net_elm);
383 XBT_DEBUG("migrate VM(%s): change PM (%s to %s)", vm_name, pm_name_src, pm_name_dst);
387 void VMHL13::setBound(double bound){
388 p_action->setBound(bound);
391 void VMHL13::setAffinity(Cpu *cpu, unsigned long mask){
392 p_action->setAffinity(cpu, mask);
396 * A surf level object will be useless in the upper layer. Returning the
397 * dict_elm of the host.
399 surf_resource_t VMHL13::getPm()
401 return xbt_lib_get_elm_or_null(host_lib, p_subWs->getName());
404 /* Adding a task to a VM updates the VCPU task on its physical machine. */
405 Action *VMHL13::execute(double size)
407 double old_cost = p_action->getCost();
408 double new_cost = old_cost + size;
410 XBT_DEBUG("VM(%s)@PM(%s): update dummy action's cost (%f -> %f)",
411 getName(), p_subWs->getName(),
414 p_action->setCost(new_cost);
416 return p_cpu->execute(size);
419 Action *VMHL13::sleep(double duration) {
420 return p_cpu->sleep(duration);
427 //FIME:: handle action cancel