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"
11 #include "src/surf/platform.hpp"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu,
14 "Logging specific to the SURF CPU IMPROVED module");
19 void surf_cpu_model_init_Cas01()
21 xbt_assert(!surf_cpu_model_pm);
22 xbt_assert(!surf_cpu_model_vm);
24 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
25 if (!strcmp(optim, "TI")) {
26 surf_cpu_model_init_ti();
30 surf_cpu_model_pm = new simgrid::surf::CpuCas01Model();
31 xbt_dynar_push(all_existing_models, &surf_cpu_model_pm);
33 surf_cpu_model_vm = new simgrid::surf::CpuCas01Model();
34 xbt_dynar_push(all_existing_models, &surf_cpu_model_vm);
40 CpuCas01Model::CpuCas01Model() : simgrid::surf::CpuModel()
42 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
43 int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
45 if (!strcmp(optim, "Full")) {
46 p_updateMechanism = UM_FULL;
47 m_selectiveUpdate = select;
48 } else if (!strcmp(optim, "Lazy")) {
49 p_updateMechanism = UM_LAZY;
50 m_selectiveUpdate = 1;
51 xbt_assert((select == 1)
53 (xbt_cfg_is_default_value
54 (_sg_cfg_set, "cpu/maxmin_selective_update")),
55 "Disabling selective update while using the lazy update mechanism is dumb!");
57 xbt_die("Unsupported optimization (%s) for this model", optim);
60 p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
62 p_maxminSystem = lmm_system_new(m_selectiveUpdate);
64 if (getUpdateMechanism() == UM_LAZY) {
65 p_actionHeap = xbt_heap_new(8, NULL);
66 xbt_heap_set_update_callback(p_actionHeap, surf_action_lmm_update_index_heap);
67 p_modifiedSet = new ActionLmmList();
68 p_maxminSystem->keep_track = p_modifiedSet;
72 CpuCas01Model::~CpuCas01Model()
74 lmm_system_free(p_maxminSystem);
75 p_maxminSystem = NULL;
78 xbt_heap_free(p_actionHeap);
81 surf_cpu_model_pm = NULL;
83 delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
86 Cpu *CpuCas01Model::createCpu(simgrid::s4u::Host *host, xbt_dynar_t speedPeak,
87 int pstate, double speedScale,
88 tmgr_trace_t speedTrace, int core,
90 tmgr_trace_t state_trace)
92 xbt_assert(xbt_dynar_getfirst_as(speedPeak, double) > 0.0,
93 "Speed has to be >0.0. Did you forget to specify the mandatory power attribute?");
94 xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
95 Cpu *cpu = new CpuCas01(this, host, speedPeak, pstate, speedScale, speedTrace, core, initiallyOn, state_trace);
99 double CpuCas01Model::next_occuring_event_full(double /*now*/)
101 return Model::shareResourcesMaxMin(getRunningActionSet(), p_maxminSystem, lmm_solve);
107 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::s4u::Host *host, xbt_dynar_t speedPeak,
108 int pstate, double speedScale, tmgr_trace_t speedTrace, int core,
109 int initiallyOn, tmgr_trace_t stateTrace)
111 lmm_constraint_new(model->getMaxminSystem(), this, core * speedScale * xbt_dynar_get_as(speedPeak, pstate, double)),
113 core, xbt_dynar_get_as(speedPeak, pstate, double), speedScale,
116 XBT_DEBUG("CPU create: peak=%f, pstate=%d", p_speed.peak, m_pstate);
120 p_speed.event = future_evt_set->add_trace(speedTrace, 0.0, this);
123 p_stateEvent = future_evt_set->add_trace(stateTrace, 0.0, this);
126 CpuCas01::~CpuCas01()
128 if (getModel() == surf_cpu_model_pm)
129 xbt_dynar_free(&p_speedPeakList);
132 xbt_dynar_t CpuCas01::getSpeedPeakList(){
133 return p_speedPeakList;
136 bool CpuCas01::isUsed()
138 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
141 /** @brief take into account changes of speed (either load or max) */
142 void CpuCas01::onSpeedChange() {
143 lmm_variable_t var = NULL;
144 lmm_element_t elem = NULL;
146 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
147 m_core * p_speed.scale * p_speed.peak);
148 while ((var = lmm_get_var_from_cnst
149 (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
150 CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
152 lmm_update_variable_bound(getModel()->getMaxminSystem(),
153 action->getVariable(),
154 p_speed.scale * p_speed.peak);
157 Cpu::onSpeedChange();
160 void CpuCas01::apply_event(tmgr_trace_iterator_t event, double value)
162 lmm_variable_t var = NULL;
163 lmm_element_t elem = NULL;
165 if (event == p_speed.event) {
166 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
167 xbt_assert(m_core == 1, "FIXME: add speed scaling code also for constraint_core[i]");
169 p_speed.scale = value;
172 tmgr_trace_event_unref(&p_speed.event);
173 } else if (event == p_stateEvent) {
174 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
175 xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
179 xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
182 lmm_constraint_t cnst = getConstraint();
183 double date = surf_get_clock();
187 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
188 Action *action = static_cast<Action*>(lmm_variable_id(var));
190 if (action->getState() == SURF_ACTION_RUNNING ||
191 action->getState() == SURF_ACTION_READY ||
192 action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
193 action->setFinishTime(date);
194 action->setState(SURF_ACTION_FAILED);
198 tmgr_trace_event_unref(&p_stateEvent);
200 xbt_die("Unknown event!\n");
206 CpuAction *CpuCas01::execution_start(double size)
209 XBT_IN("(%s,%g)", getName(), size);
210 CpuCas01Action *action = new CpuCas01Action(getModel(), size, isOff(),
211 p_speed.scale * p_speed.peak, getConstraint());
217 CpuAction *CpuCas01::sleep(double duration)
220 duration = MAX(duration, sg_surf_precision);
222 XBT_IN("(%s,%g)", getName(), duration);
223 CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, isOff(),
224 p_speed.scale * p_speed.peak, getConstraint());
227 // FIXME: sleep variables should not consume 1.0 in lmm_expand
228 action->m_maxDuration = duration;
229 action->m_suspended = 2;
230 if (duration == NO_MAX_DURATION) {
231 /* Move to the *end* of the corresponding action set. This convention
232 is used to speed up update_resource_state */
233 action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
234 action->p_stateSet = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
235 action->getStateSet()->push_back(*action);
238 lmm_update_variable_weight(getModel()->getMaxminSystem(),
239 action->getVariable(), 0.0);
240 if (getModel()->getUpdateMechanism() == UM_LAZY) { // remove action from the heap
241 action->heapRemove(getModel()->getActionHeap());
242 // this is necessary for a variable with weight 0 since such
243 // variables are ignored in lmm and we need to set its max_duration
244 // correctly at the next call to share_resources
245 getModel()->getModifiedSet()->push_front(*action);
256 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double speed, lmm_constraint_t constraint)
257 : CpuAction(model, cost, failed,
258 lmm_variable_new(model->getMaxminSystem(), this,
261 if (model->getUpdateMechanism() == UM_LAZY) {
263 m_lastUpdate = surf_get_clock();
266 lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);