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);
36 simgrid::surf::on_postparse.connect([]() {
37 surf_cpu_model_pm->addTraces();
44 CpuCas01Model::CpuCas01Model() : simgrid::surf::CpuModel()
46 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
47 int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
49 if (!strcmp(optim, "Full")) {
50 p_updateMechanism = UM_FULL;
51 m_selectiveUpdate = select;
52 } else if (!strcmp(optim, "Lazy")) {
53 p_updateMechanism = UM_LAZY;
54 m_selectiveUpdate = 1;
55 xbt_assert((select == 1)
57 (xbt_cfg_is_default_value
58 (_sg_cfg_set, "cpu/maxmin_selective_update")),
59 "Disabling selective update while using the lazy update mechanism is dumb!");
61 xbt_die("Unsupported optimization (%s) for this model", optim);
64 p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
66 p_maxminSystem = lmm_system_new(m_selectiveUpdate);
68 if (getUpdateMechanism() == UM_LAZY) {
69 p_actionHeap = xbt_heap_new(8, NULL);
70 xbt_heap_set_update_callback(p_actionHeap, surf_action_lmm_update_index_heap);
71 p_modifiedSet = new ActionLmmList();
72 p_maxminSystem->keep_track = p_modifiedSet;
76 CpuCas01Model::~CpuCas01Model()
78 lmm_system_free(p_maxminSystem);
79 p_maxminSystem = NULL;
82 xbt_heap_free(p_actionHeap);
85 surf_cpu_model_pm = NULL;
87 delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
90 Cpu *CpuCas01Model::createCpu(simgrid::s4u::Host *host, xbt_dynar_t speedPeak,
91 int pstate, double speedScale,
92 tmgr_trace_t speedTrace, int core,
94 tmgr_trace_t state_trace)
96 xbt_assert(xbt_dynar_getfirst_as(speedPeak, double) > 0.0,
97 "Speed has to be >0.0. Did you forget to specify the mandatory power attribute?");
98 xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
99 Cpu *cpu = new CpuCas01(this, host, speedPeak, pstate, speedScale, speedTrace, core, initiallyOn, state_trace);
103 double CpuCas01Model::shareResourcesFull(double /*now*/)
105 return Model::shareResourcesMaxMin(getRunningActionSet(),
106 p_maxminSystem, lmm_solve);
109 void CpuCas01Model::addTraces()
111 xbt_dict_cursor_t cursor = NULL;
112 char *trace_name, *elm;
113 static int called = 0;
118 /* connect all traces relative to hosts */
119 xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
120 tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
121 CpuCas01 *host = static_cast<CpuCas01*>(sg_host_by_name(elm)->pimpl_cpu);
123 xbt_assert(host, "Host %s undefined", elm);
124 xbt_assert(trace, "Trace %s undefined", trace_name);
126 host->p_stateEvent = future_evt_set->add_trace(trace, 0.0, host);
129 xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
130 tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
131 CpuCas01 *host = static_cast<CpuCas01*>(sg_host_by_name(elm)->pimpl_cpu);
133 xbt_assert(host, "Host %s undefined", elm);
134 xbt_assert(trace, "Trace %s undefined", trace_name);
136 host->p_speedEvent = future_evt_set->add_trace(trace, 0.0, host);
143 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::s4u::Host *host, xbt_dynar_t speedPeak,
144 int pstate, double speedScale, tmgr_trace_t speedTrace, int core,
145 int initiallyOn, tmgr_trace_t stateTrace)
147 lmm_constraint_new(model->getMaxminSystem(), this, core * speedScale * xbt_dynar_get_as(speedPeak, pstate, double)),
149 core, xbt_dynar_get_as(speedPeak, pstate, double), speedScale,
152 XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_speedPeak, m_pstate);
156 p_speedEvent = future_evt_set->add_trace(speedTrace, 0.0, this);
159 p_stateEvent = future_evt_set->add_trace(stateTrace, 0.0, this);
162 CpuCas01::~CpuCas01()
164 if (getModel() == surf_cpu_model_pm)
165 xbt_dynar_free(&p_speedPeakList);
168 xbt_dynar_t CpuCas01::getSpeedPeakList(){
169 return p_speedPeakList;
172 bool CpuCas01::isUsed()
174 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
177 /** @brief take into account changes of speed (either load or max) */
178 void CpuCas01::onSpeedChange() {
179 lmm_variable_t var = NULL;
180 lmm_element_t elem = NULL;
182 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
183 m_core * m_speedScale * m_speedPeak);
184 while ((var = lmm_get_var_from_cnst
185 (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
186 CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
188 lmm_update_variable_bound(getModel()->getMaxminSystem(),
189 action->getVariable(),
190 m_speedScale * m_speedPeak);
193 Cpu::onSpeedChange();
196 void CpuCas01::updateState(tmgr_trace_iterator_t event_type, double value, double date)
198 lmm_variable_t var = NULL;
199 lmm_element_t elem = NULL;
201 if (event_type == p_speedEvent) {
202 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
203 xbt_assert(m_core == 1, "FIXME: add speed scaling code also for constraint_core[i]");
205 m_speedScale = value;
208 tmgr_trace_event_unref(&p_speedEvent);
209 } else if (event_type == p_stateEvent) {
210 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
211 xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
215 xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
218 lmm_constraint_t cnst = getConstraint();
222 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
223 Action *action = static_cast<Action*>(lmm_variable_id(var));
225 if (action->getState() == SURF_ACTION_RUNNING ||
226 action->getState() == SURF_ACTION_READY ||
227 action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
228 action->setFinishTime(date);
229 action->setState(SURF_ACTION_FAILED);
233 tmgr_trace_event_unref(&p_stateEvent);
235 xbt_die("Unknown event!\n");
241 CpuAction *CpuCas01::execute(double size)
244 XBT_IN("(%s,%g)", getName(), size);
245 CpuCas01Action *action = new CpuCas01Action(getModel(), size, isOff(),
246 m_speedScale * m_speedPeak, getConstraint());
252 CpuAction *CpuCas01::sleep(double duration)
255 duration = MAX(duration, sg_surf_precision);
257 XBT_IN("(%s,%g)", getName(), duration);
258 CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, isOff(),
259 m_speedScale * m_speedPeak, getConstraint());
262 // FIXME: sleep variables should not consume 1.0 in lmm_expand
263 action->m_maxDuration = duration;
264 action->m_suspended = 2;
265 if (duration == NO_MAX_DURATION) {
266 /* Move to the *end* of the corresponding action set. This convention
267 is used to speed up update_resource_state */
268 action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
269 action->p_stateSet = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
270 action->getStateSet()->push_back(*action);
273 lmm_update_variable_weight(getModel()->getMaxminSystem(),
274 action->getVariable(), 0.0);
275 if (getModel()->getUpdateMechanism() == UM_LAZY) { // remove action from the heap
276 action->heapRemove(getModel()->getActionHeap());
277 // this is necessary for a variable with weight 0 since such
278 // variables are ignored in lmm and we need to set its max_duration
279 // correctly at the next call to share_resources
280 getModel()->getModifiedSet()->push_front(*action);
291 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double speed, lmm_constraint_t constraint)
292 : CpuAction(model, cost, failed,
293 lmm_variable_new(model->getMaxminSystem(), this,
296 if (model->getUpdateMechanism() == UM_LAZY) {
298 m_lastUpdate = surf_get_clock();
301 lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);