1 /* Copyright (c) 2009-2011, 2013-2017. 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(not surf_cpu_model_pm);
20 xbt_assert(not surf_cpu_model_vm);
22 if (xbt_cfg_get_string("cpu/optim") == "TI") {
23 surf_cpu_model_init_ti();
27 surf_cpu_model_pm = new simgrid::surf::CpuCas01Model();
28 all_existing_models->push_back(surf_cpu_model_pm);
30 surf_cpu_model_vm = new simgrid::surf::CpuCas01Model();
31 all_existing_models->push_back(surf_cpu_model_vm);
37 CpuCas01Model::CpuCas01Model() : simgrid::surf::CpuModel()
39 std::string optim = xbt_cfg_get_string("cpu/optim");
40 bool select = xbt_cfg_get_boolean("cpu/maxmin-selective-update");
42 if (optim == "Full") {
43 setUpdateMechanism(UM_FULL);
44 selectiveUpdate_ = select;
45 } else if (optim == "Lazy") {
46 setUpdateMechanism(UM_LAZY);
47 selectiveUpdate_ = true;
48 xbt_assert(select || (xbt_cfg_is_default_value("cpu/maxmin-selective-update")),
49 "Disabling selective update while using the lazy update mechanism is dumb!");
51 xbt_die("Unsupported optimization (%s) for this model", optim.c_str());
54 p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
55 maxminSystem_ = lmm_system_new(selectiveUpdate_);
57 if (getUpdateMechanism() == UM_LAZY) {
58 actionHeap_ = xbt_heap_new(8, nullptr);
59 xbt_heap_set_update_callback(actionHeap_, surf_action_lmm_update_index_heap);
60 modifiedSet_ = new ActionLmmList();
61 maxminSystem_->keep_track = modifiedSet_;
65 CpuCas01Model::~CpuCas01Model()
67 lmm_system_free(maxminSystem_);
68 maxminSystem_ = nullptr;
69 xbt_heap_free(actionHeap_);
72 surf_cpu_model_pm = nullptr;
74 delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
77 Cpu *CpuCas01Model::createCpu(simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
79 return new CpuCas01(this, host, speedPerPstate, core);
85 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
86 : Cpu(model, host, lmm_constraint_new(model->getMaxminSystem(), this, core * speedPerPstate->front()),
93 if (model() == surf_cpu_model_pm)
94 speedPerPstate_.clear();
97 std::vector<double> * CpuCas01::getSpeedPeakList(){
98 return &speedPerPstate_;
101 bool CpuCas01::isUsed()
103 return lmm_constraint_used(model()->getMaxminSystem(), constraint());
106 /** @brief take into account changes of speed (either load or max) */
107 void CpuCas01::onSpeedChange() {
108 lmm_variable_t var = nullptr;
109 lmm_element_t elem = nullptr;
111 lmm_update_constraint_bound(model()->getMaxminSystem(), constraint(), coresAmount_ * speed_.scale * speed_.peak);
112 while ((var = lmm_get_var_from_cnst(model()->getMaxminSystem(), constraint(), &elem))) {
113 CpuCas01Action* action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
115 lmm_update_variable_bound(model()->getMaxminSystem(), action->getVariable(),
116 action->requestedCore() * speed_.scale * speed_.peak);
119 Cpu::onSpeedChange();
122 void CpuCas01::apply_event(tmgr_trace_event_t event, double value)
124 if (event == speed_.event) {
125 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
126 xbt_assert(coresAmount_ == 1, "FIXME: add speed scaling code also for constraint_core[i]");
128 speed_.scale = value;
131 tmgr_trace_event_unref(&speed_.event);
132 } else if (event == stateEvent_) {
133 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
134 xbt_assert(coresAmount_ == 1, "FIXME: add state change code also for constraint_core[i]");
138 host_that_restart.push_back(getHost());
141 lmm_constraint_t cnst = constraint();
142 lmm_variable_t var = nullptr;
143 lmm_element_t elem = nullptr;
144 double date = surf_get_clock();
148 while ((var = lmm_get_var_from_cnst(model()->getMaxminSystem(), cnst, &elem))) {
149 Action *action = static_cast<Action*>(lmm_variable_id(var));
151 if (action->getState() == Action::State::running ||
152 action->getState() == Action::State::ready ||
153 action->getState() == Action::State::not_in_the_system) {
154 action->setFinishTime(date);
155 action->setState(Action::State::failed);
159 tmgr_trace_event_unref(&stateEvent_);
162 xbt_die("Unknown event!\n");
166 /** @brief Start a new execution on this CPU lasting @param size flops and using one core */
167 CpuAction *CpuCas01::execution_start(double size)
169 return new CpuCas01Action(model(), size, isOff(), speed_.scale * speed_.peak, constraint());
171 CpuAction* CpuCas01::execution_start(double size, int requestedCores)
173 return new CpuCas01Action(model(), size, isOff(), speed_.scale * speed_.peak, constraint(), requestedCores);
176 CpuAction *CpuCas01::sleep(double duration)
179 duration = MAX(duration, sg_surf_precision);
181 XBT_IN("(%s,%g)", getCname(), duration);
182 CpuCas01Action* action = new CpuCas01Action(model(), 1.0, isOff(), speed_.scale * speed_.peak, constraint());
184 // FIXME: sleep variables should not consume 1.0 in lmm_expand
185 action->setMaxDuration(duration);
186 action->suspended_ = 2;
187 if (duration < 0) { // NO_MAX_DURATION
188 /* Move to the *end* of the corresponding action set. This convention is used to speed up update_resource_state */
189 action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
190 action->stateSet_ = static_cast<CpuCas01Model*>(model())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
191 action->getStateSet()->push_back(*action);
194 lmm_update_variable_weight(model()->getMaxminSystem(), action->getVariable(), 0.0);
195 if (model()->getUpdateMechanism() == UM_LAZY) { // remove action from the heap
196 action->heapRemove(model()->getActionHeap());
197 // this is necessary for a variable with weight 0 since such variables are ignored in lmm and we need to set its
198 // max_duration correctly at the next call to share_resources
199 model()->getModifiedSet()->push_front(*action);
209 CpuCas01Action::CpuCas01Action(Model* model, double cost, bool failed, double speed, lmm_constraint_t constraint,
211 : CpuAction(model, cost, failed,
212 lmm_variable_new(model->getMaxminSystem(), this, 1.0 / requestedCore, requestedCore * speed, 1))
213 , requestedCore_(requestedCore)
215 if (model->getUpdateMechanism() == UM_LAZY) {
220 lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
223 CpuCas01Action::CpuCas01Action(Model* model, double cost, bool failed, double speed, lmm_constraint_t constraint)
224 : CpuCas01Action(model, cost, failed, speed, constraint, 1)
228 int CpuCas01Action::requestedCore()
230 return requestedCore_;
233 CpuCas01Action::~CpuCas01Action()=default;