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, "Logging specific to the SURF CPU IMPROVED module");
17 void surf_cpu_model_init_Cas01()
19 xbt_assert(!surf_cpu_model_pm);
20 xbt_assert(!surf_cpu_model_vm);
22 char *optim = xbt_cfg_get_string("cpu/optim");
23 if (!strcmp(optim, "TI")) {
24 surf_cpu_model_init_ti();
28 surf_cpu_model_pm = new simgrid::surf::CpuCas01Model();
29 all_existing_models->push_back(surf_cpu_model_pm);
31 surf_cpu_model_vm = new simgrid::surf::CpuCas01Model();
32 all_existing_models->push_back(surf_cpu_model_vm);
38 CpuCas01Model::CpuCas01Model() : simgrid::surf::CpuModel()
40 char *optim = xbt_cfg_get_string("cpu/optim");
41 int select = xbt_cfg_get_boolean("cpu/maxmin-selective-update");
43 if (!strcmp(optim, "Full")) {
44 updateMechanism_ = UM_FULL;
45 selectiveUpdate_ = select;
46 } else if (!strcmp(optim, "Lazy")) {
47 updateMechanism_ = UM_LAZY;
49 xbt_assert((select == 1)
50 || (xbt_cfg_is_default_value("cpu/maxmin-selective-update")),
51 "Disabling selective update while using the lazy update mechanism is dumb!");
53 xbt_die("Unsupported optimization (%s) for this model", optim);
56 p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
58 maxminSystem_ = lmm_system_new(selectiveUpdate_);
60 if (getUpdateMechanism() == UM_LAZY) {
61 actionHeap_ = xbt_heap_new(8, nullptr);
62 xbt_heap_set_update_callback(actionHeap_, surf_action_lmm_update_index_heap);
63 modifiedSet_ = new ActionLmmList();
64 maxminSystem_->keep_track = modifiedSet_;
68 CpuCas01Model::~CpuCas01Model()
70 lmm_system_free(maxminSystem_);
71 maxminSystem_ = nullptr;
72 xbt_heap_free(actionHeap_);
75 surf_cpu_model_pm = nullptr;
77 delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
80 Cpu *CpuCas01Model::createCpu(simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
82 return new CpuCas01(this, host, speedPerPstate, core);
88 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
89 : Cpu(model, host, lmm_constraint_new(model->getMaxminSystem(), this, core * speedPerPstate->front()),
96 if (getModel() == surf_cpu_model_pm)
97 speedPerPstate_.clear();
100 std::vector<double> * CpuCas01::getSpeedPeakList(){
101 return &speedPerPstate_;
104 bool CpuCas01::isUsed()
106 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
109 /** @brief take into account changes of speed (either load or max) */
110 void CpuCas01::onSpeedChange() {
111 lmm_variable_t var = nullptr;
112 lmm_element_t elem = nullptr;
114 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
115 coresAmount_ * speed_.scale * speed_.peak);
116 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
117 CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
119 lmm_update_variable_bound(getModel()->getMaxminSystem(), action->getVariable(), speed_.scale * speed_.peak);
122 Cpu::onSpeedChange();
125 void CpuCas01::apply_event(tmgr_trace_iterator_t event, double value)
127 if (event == speed_.event) {
128 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
129 xbt_assert(coresAmount_ == 1, "FIXME: add speed scaling code also for constraint_core[i]");
131 speed_.scale = value;
134 tmgr_trace_event_unref(&speed_.event);
135 } else if (event == stateEvent_) {
136 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
137 xbt_assert(coresAmount_ == 1, "FIXME: add state change code also for constraint_core[i]");
141 host_that_restart.push_back(getHost());
144 lmm_constraint_t cnst = getConstraint();
145 lmm_variable_t var = nullptr;
146 lmm_element_t elem = nullptr;
147 double date = surf_get_clock();
151 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
152 Action *action = static_cast<Action*>(lmm_variable_id(var));
154 if (action->getState() == Action::State::running ||
155 action->getState() == Action::State::ready ||
156 action->getState() == Action::State::not_in_the_system) {
157 action->setFinishTime(date);
158 action->setState(Action::State::failed);
162 tmgr_trace_event_unref(&stateEvent_);
165 xbt_die("Unknown event!\n");
169 CpuAction *CpuCas01::execution_start(double size)
171 return new CpuCas01Action(getModel(), size, isOff(), speed_.scale * speed_.peak, getConstraint());
174 CpuAction *CpuCas01::sleep(double duration)
177 duration = MAX(duration, sg_surf_precision);
179 XBT_IN("(%s,%g)", getName(), duration);
180 CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, isOff(), speed_.scale * speed_.peak, getConstraint());
182 // FIXME: sleep variables should not consume 1.0 in lmm_expand
183 action->maxDuration_ = duration;
184 action->suspended_ = 2;
185 if (duration == NO_MAX_DURATION) {
186 /* Move to the *end* of the corresponding action set. This convention is used to speed up update_resource_state */
187 action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
188 action->stateSet_ = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
189 action->getStateSet()->push_back(*action);
192 lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
193 if (getModel()->getUpdateMechanism() == UM_LAZY) { // remove action from the heap
194 action->heapRemove(getModel()->getActionHeap());
195 // this is necessary for a variable with weight 0 since such variables are ignored in lmm and we need to set its
196 // max_duration correctly at the next call to share_resources
197 getModel()->getModifiedSet()->push_front(*action);
208 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double speed, lmm_constraint_t constraint)
209 : CpuAction(model, cost, failed, lmm_variable_new(model->getMaxminSystem(), this, 1.0, speed, 1))
211 if (model->getUpdateMechanism() == UM_LAZY) {
213 lastUpdate_ = surf_get_clock();
216 lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
219 CpuCas01Action::~CpuCas01Action()=default;