1 /* Copyright (c) 2009-2011, 2013-2016. 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"
9 #include "maxmin_private.hpp"
10 #include "simgrid/sg_config.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu,
13 "Logging specific to the SURF CPU IMPROVED module");
18 void surf_cpu_model_init_Cas01()
20 xbt_assert(!surf_cpu_model_pm);
21 xbt_assert(!surf_cpu_model_vm);
23 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
24 if (!strcmp(optim, "TI")) {
25 surf_cpu_model_init_ti();
29 surf_cpu_model_pm = new simgrid::surf::CpuCas01Model();
30 xbt_dynar_push(all_existing_models, &surf_cpu_model_pm);
32 surf_cpu_model_vm = new simgrid::surf::CpuCas01Model();
33 xbt_dynar_push(all_existing_models, &surf_cpu_model_vm);
39 CpuCas01Model::CpuCas01Model() : simgrid::surf::CpuModel()
41 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
42 int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
44 if (!strcmp(optim, "Full")) {
45 updateMechanism_ = UM_FULL;
46 selectiveUpdate_ = select;
47 } else if (!strcmp(optim, "Lazy")) {
48 updateMechanism_ = UM_LAZY;
50 xbt_assert((select == 1)
52 (xbt_cfg_is_default_value
53 (_sg_cfg_set, "cpu/maxmin_selective_update")),
54 "Disabling selective update while using the lazy update mechanism is dumb!");
56 xbt_die("Unsupported optimization (%s) for this model", optim);
59 p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
61 maxminSystem_ = lmm_system_new(selectiveUpdate_);
63 if (getUpdateMechanism() == UM_LAZY) {
64 actionHeap_ = xbt_heap_new(8, NULL);
65 xbt_heap_set_update_callback(actionHeap_, surf_action_lmm_update_index_heap);
66 modifiedSet_ = new ActionLmmList();
67 maxminSystem_->keep_track = modifiedSet_;
71 CpuCas01Model::~CpuCas01Model()
73 lmm_system_free(maxminSystem_);
77 xbt_heap_free(actionHeap_);
80 surf_cpu_model_pm = NULL;
82 delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
85 Cpu *CpuCas01Model::createCpu(simgrid::s4u::Host *host, xbt_dynar_t speedPeak, tmgr_trace_t speedTrace, int core)
87 xbt_assert(xbt_dynar_getfirst_as(speedPeak, double) > 0.0,
88 "Speed has to be >0.0. Did you forget to specify the mandatory power attribute?");
89 xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
90 return new CpuCas01(this, host, speedPeak, speedTrace, core);
93 double CpuCas01Model::next_occuring_event_full(double /*now*/)
95 return Model::shareResourcesMaxMin(getRunningActionSet(), maxminSystem_, lmm_solve);
101 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::s4u::Host *host, xbt_dynar_t speedPeak,
102 tmgr_trace_t speedTrace, int core)
104 lmm_constraint_new(model->getMaxminSystem(), this, core * xbt_dynar_get_as(speedPeak, 0/*pstate*/, double)),
105 speedPeak, core, xbt_dynar_get_as(speedPeak, 0/*pstate*/, double))
108 XBT_DEBUG("CPU create: peak=%f, pstate=%d", speed_.peak, pstate_);
112 speed_.event = future_evt_set->add_trace(speedTrace, 0.0, this);
115 CpuCas01::~CpuCas01()
117 if (getModel() == surf_cpu_model_pm)
118 xbt_dynar_free(&speedPeakList_);
121 xbt_dynar_t CpuCas01::getSpeedPeakList(){
122 return speedPeakList_;
125 bool CpuCas01::isUsed()
127 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
130 /** @brief take into account changes of speed (either load or max) */
131 void CpuCas01::onSpeedChange() {
132 lmm_variable_t var = NULL;
133 lmm_element_t elem = NULL;
135 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
136 coresAmount_ * speed_.scale * speed_.peak);
137 while ((var = lmm_get_var_from_cnst
138 (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
139 CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
141 lmm_update_variable_bound(getModel()->getMaxminSystem(),
142 action->getVariable(),
143 speed_.scale * speed_.peak);
146 Cpu::onSpeedChange();
149 void CpuCas01::apply_event(tmgr_trace_iterator_t event, double value)
151 if (event == speed_.event) {
152 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
153 xbt_assert(coresAmount_ == 1, "FIXME: add speed scaling code also for constraint_core[i]");
155 speed_.scale = value;
158 tmgr_trace_event_unref(&speed_.event);
159 } else if (event == stateEvent_) {
160 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
161 xbt_assert(coresAmount_ == 1, "FIXME: add state change code also for constraint_core[i]");
165 xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
168 lmm_constraint_t cnst = getConstraint();
169 lmm_variable_t var = NULL;
170 lmm_element_t elem = NULL;
171 double date = surf_get_clock();
175 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
176 Action *action = static_cast<Action*>(lmm_variable_id(var));
178 if (action->getState() == SURF_ACTION_RUNNING ||
179 action->getState() == SURF_ACTION_READY ||
180 action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
181 action->setFinishTime(date);
182 action->setState(SURF_ACTION_FAILED);
186 tmgr_trace_event_unref(&stateEvent_);
189 xbt_die("Unknown event!\n");
193 CpuAction *CpuCas01::execution_start(double size)
196 XBT_IN("(%s,%g)", getName(), size);
197 CpuCas01Action *action = new CpuCas01Action(getModel(), size, isOff(),
198 speed_.scale * speed_.peak, getConstraint());
204 CpuAction *CpuCas01::sleep(double duration)
207 duration = MAX(duration, sg_surf_precision);
209 XBT_IN("(%s,%g)", getName(), duration);
210 CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, isOff(),
211 speed_.scale * speed_.peak, getConstraint());
214 // FIXME: sleep variables should not consume 1.0 in lmm_expand
215 action->m_maxDuration = duration;
216 action->m_suspended = 2;
217 if (duration == NO_MAX_DURATION) {
218 /* Move to the *end* of the corresponding action set. This convention
219 is used to speed up update_resource_state */
220 action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
221 action->p_stateSet = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
222 action->getStateSet()->push_back(*action);
225 lmm_update_variable_weight(getModel()->getMaxminSystem(),
226 action->getVariable(), 0.0);
227 if (getModel()->getUpdateMechanism() == UM_LAZY) { // remove action from the heap
228 action->heapRemove(getModel()->getActionHeap());
229 // this is necessary for a variable with weight 0 since such
230 // variables are ignored in lmm and we need to set its max_duration
231 // correctly at the next call to share_resources
232 getModel()->getModifiedSet()->push_front(*action);
243 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double speed, lmm_constraint_t constraint)
244 : CpuAction(model, cost, failed,
245 lmm_variable_new(model->getMaxminSystem(), this,
248 if (model->getUpdateMechanism() == UM_LAZY) {
250 m_lastUpdate = surf_get_clock();
253 lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);