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"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu, "Logging specific to the SURF CPU IMPROVED module");
18 void surf_cpu_model_init_Cas01()
20 xbt_assert(not surf_cpu_model_pm);
21 xbt_assert(not surf_cpu_model_vm);
23 if (xbt_cfg_get_string("cpu/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 std::string optim = xbt_cfg_get_string("cpu/optim");
41 bool select = xbt_cfg_get_boolean("cpu/maxmin-selective-update");
43 if (optim == "Full") {
44 setUpdateMechanism(UM_FULL);
45 selectiveUpdate_ = select;
46 } else if (optim == "Lazy") {
47 setUpdateMechanism(UM_LAZY);
48 selectiveUpdate_ = true;
49 xbt_assert(select || (xbt_cfg_is_default_value("cpu/maxmin-selective-update")),
50 "Disabling selective update while using the lazy update mechanism is dumb!");
52 xbt_die("Unsupported optimization (%s) for this model", optim.c_str());
55 p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
56 maxminSystem_ = lmm_system_new(selectiveUpdate_);
58 if (getUpdateMechanism() == UM_LAZY) {
59 modifiedSet_ = new ActionLmmList();
60 maxminSystem_->keep_track = modifiedSet_;
64 CpuCas01Model::~CpuCas01Model()
66 lmm_system_free(maxminSystem_);
67 maxminSystem_ = nullptr;
70 surf_cpu_model_pm = nullptr;
72 delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
75 Cpu *CpuCas01Model::createCpu(simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
77 return new CpuCas01(this, host, speedPerPstate, core);
83 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
84 : Cpu(model, host, lmm_constraint_new(model->getMaxminSystem(), this, core * speedPerPstate->front()),
91 if (model() == surf_cpu_model_pm)
92 speedPerPstate_.clear();
95 std::vector<double> * CpuCas01::getSpeedPeakList(){
96 return &speedPerPstate_;
99 bool CpuCas01::isUsed()
101 return lmm_constraint_used(model()->getMaxminSystem(), constraint());
104 /** @brief take into account changes of speed (either load or max) */
105 void CpuCas01::onSpeedChange() {
106 lmm_variable_t var = nullptr;
107 lmm_element_t elem = nullptr;
109 lmm_update_constraint_bound(model()->getMaxminSystem(), constraint(), coresAmount_ * speed_.scale * speed_.peak);
110 while ((var = lmm_get_var_from_cnst(model()->getMaxminSystem(), constraint(), &elem))) {
111 CpuCas01Action* action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
113 lmm_update_variable_bound(model()->getMaxminSystem(), action->getVariable(),
114 action->requestedCore() * speed_.scale * speed_.peak);
117 Cpu::onSpeedChange();
120 void CpuCas01::apply_event(tmgr_trace_event_t event, double value)
122 if (event == speed_.event) {
123 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
124 xbt_assert(coresAmount_ == 1, "FIXME: add speed scaling code also for constraint_core[i]");
126 speed_.scale = value;
129 tmgr_trace_event_unref(&speed_.event);
130 } else if (event == stateEvent_) {
131 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
132 xbt_assert(coresAmount_ == 1, "FIXME: add state change code also for constraint_core[i]");
136 host_that_restart.push_back(getHost());
139 lmm_constraint_t cnst = constraint();
140 lmm_variable_t var = nullptr;
141 lmm_element_t elem = nullptr;
142 double date = surf_get_clock();
146 while ((var = lmm_get_var_from_cnst(model()->getMaxminSystem(), cnst, &elem))) {
147 Action *action = static_cast<Action*>(lmm_variable_id(var));
149 if (action->getState() == Action::State::running ||
150 action->getState() == Action::State::ready ||
151 action->getState() == Action::State::not_in_the_system) {
152 action->setFinishTime(date);
153 action->setState(Action::State::failed);
157 tmgr_trace_event_unref(&stateEvent_);
160 xbt_die("Unknown event!\n");
164 /** @brief Start a new execution on this CPU lasting @param size flops and using one core */
165 CpuAction *CpuCas01::execution_start(double size)
167 return new CpuCas01Action(model(), size, isOff(), speed_.scale * speed_.peak, constraint());
169 CpuAction* CpuCas01::execution_start(double size, int requestedCores)
171 return new CpuCas01Action(model(), size, isOff(), speed_.scale * speed_.peak, constraint(), requestedCores);
174 CpuAction *CpuCas01::sleep(double duration)
177 duration = std::max(duration, sg_surf_precision);
179 XBT_IN("(%s,%g)", getCname(), duration);
180 CpuCas01Action* action = new CpuCas01Action(model(), 1.0, isOff(), speed_.scale * speed_.peak, constraint());
182 // FIXME: sleep variables should not consume 1.0 in lmm_expand
183 action->setMaxDuration(duration);
184 action->suspended_ = 2;
185 if (duration < 0) { // 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*>(model())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
189 action->getStateSet()->push_back(*action);
192 lmm_update_variable_weight(model()->getMaxminSystem(), action->getVariable(), 0.0);
193 if (model()->getUpdateMechanism() == UM_LAZY) { // remove action from the heap
194 action->heapRemove(model()->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 model()->getModifiedSet()->push_front(*action);
207 CpuCas01Action::CpuCas01Action(Model* model, double cost, bool failed, double speed, lmm_constraint_t constraint,
209 : CpuAction(model, cost, failed,
210 lmm_variable_new(model->getMaxminSystem(), this, 1.0 / requestedCore, requestedCore * speed, 1))
211 , requestedCore_(requestedCore)
213 if (model->getUpdateMechanism() == UM_LAZY) {
217 lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
220 CpuCas01Action::CpuCas01Action(Model* model, double cost, bool failed, double speed, lmm_constraint_t constraint)
221 : CpuCas01Action(model, cost, failed, speed, constraint, 1)
225 int CpuCas01Action::requestedCore()
227 return requestedCore_;
230 CpuCas01Action::~CpuCas01Action()=default;