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 bool 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;
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);
55 p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
57 maxminSystem_ = lmm_system_new(selectiveUpdate_);
59 if (getUpdateMechanism() == UM_LAZY) {
60 actionHeap_ = xbt_heap_new(8, nullptr);
61 xbt_heap_set_update_callback(actionHeap_, surf_action_lmm_update_index_heap);
62 modifiedSet_ = new ActionLmmList();
63 maxminSystem_->keep_track = modifiedSet_;
67 CpuCas01Model::~CpuCas01Model()
69 lmm_system_free(maxminSystem_);
70 maxminSystem_ = nullptr;
71 xbt_heap_free(actionHeap_);
74 surf_cpu_model_pm = nullptr;
76 delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
79 Cpu *CpuCas01Model::createCpu(simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
81 return new CpuCas01(this, host, speedPerPstate, core);
87 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
88 : Cpu(model, host, lmm_constraint_new(model->getMaxminSystem(), this, core * speedPerPstate->front()),
95 if (getModel() == surf_cpu_model_pm)
96 speedPerPstate_.clear();
99 std::vector<double> * CpuCas01::getSpeedPeakList(){
100 return &speedPerPstate_;
103 bool CpuCas01::isUsed()
105 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
108 /** @brief take into account changes of speed (either load or max) */
109 void CpuCas01::onSpeedChange() {
110 lmm_variable_t var = nullptr;
111 lmm_element_t elem = nullptr;
113 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
114 coresAmount_ * speed_.scale * speed_.peak);
115 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
116 CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
118 lmm_update_variable_bound(getModel()->getMaxminSystem(), action->getVariable(), speed_.scale * speed_.peak);
121 Cpu::onSpeedChange();
124 void CpuCas01::apply_event(tmgr_trace_iterator_t event, double value)
126 if (event == speed_.event) {
127 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
128 xbt_assert(coresAmount_ == 1, "FIXME: add speed scaling code also for constraint_core[i]");
130 speed_.scale = value;
133 tmgr_trace_event_unref(&speed_.event);
134 } else if (event == stateEvent_) {
135 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
136 xbt_assert(coresAmount_ == 1, "FIXME: add state change code also for constraint_core[i]");
140 host_that_restart.push_back(getHost());
143 lmm_constraint_t cnst = getConstraint();
144 lmm_variable_t var = nullptr;
145 lmm_element_t elem = nullptr;
146 double date = surf_get_clock();
150 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
151 Action *action = static_cast<Action*>(lmm_variable_id(var));
153 if (action->getState() == Action::State::running ||
154 action->getState() == Action::State::ready ||
155 action->getState() == Action::State::not_in_the_system) {
156 action->setFinishTime(date);
157 action->setState(Action::State::failed);
161 tmgr_trace_event_unref(&stateEvent_);
164 xbt_die("Unknown event!\n");
168 CpuAction *CpuCas01::execution_start(double size)
170 return new CpuCas01Action(getModel(), size, isOff(), speed_.scale * speed_.peak, getConstraint());
173 CpuAction *CpuCas01::sleep(double duration)
176 duration = MAX(duration, sg_surf_precision);
178 XBT_IN("(%s,%g)", getName(), duration);
179 CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, isOff(), speed_.scale * speed_.peak, getConstraint());
181 // FIXME: sleep variables should not consume 1.0 in lmm_expand
182 action->maxDuration_ = duration;
183 action->suspended_ = 2;
184 if (duration == NO_MAX_DURATION) {
185 /* Move to the *end* of the corresponding action set. This convention is used to speed up update_resource_state */
186 action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
187 action->stateSet_ = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
188 action->getStateSet()->push_back(*action);
191 lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
192 if (getModel()->getUpdateMechanism() == UM_LAZY) { // remove action from the heap
193 action->heapRemove(getModel()->getActionHeap());
194 // this is necessary for a variable with weight 0 since such variables are ignored in lmm and we need to set its
195 // max_duration correctly at the next call to share_resources
196 getModel()->getModifiedSet()->push_front(*action);
207 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double speed, lmm_constraint_t constraint)
208 : CpuAction(model, cost, failed, lmm_variable_new(model->getMaxminSystem(), this, 1.0, speed, 1))
210 if (model->getUpdateMechanism() == UM_LAZY) {
212 lastUpdate_ = surf_get_clock();
215 lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
218 CpuCas01Action::~CpuCas01Action()=default;