1 /* Copyright (c) 2009-2011, 2013. 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,
13 "Logging specific to the SURF CPU IMPROVED module");
19 static void parse_cpu_init(sg_platf_host_cbarg_t host){
20 ((CpuCas01ModelPtr)surf_cpu_model_pm)->parseInit(host);
23 static void cpu_add_traces_cpu(){
24 surf_cpu_model_pm->addTraces();
27 static void cpu_define_callbacks()
29 sg_platf_host_add_cb(parse_cpu_init);
30 sg_platf_postparse_add_cb(cpu_add_traces_cpu);
36 void surf_cpu_model_init_Cas01()
38 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
40 xbt_assert(!surf_cpu_model_pm);
41 xbt_assert(!surf_cpu_model_vm);
43 if (!strcmp(optim, "TI")) {
44 surf_cpu_model_init_ti();
48 surf_cpu_model_pm = new CpuCas01Model();
49 surf_cpu_model_vm = new CpuCas01Model();
51 cpu_define_callbacks();
52 ModelPtr model_pm = static_cast<ModelPtr>(surf_cpu_model_pm);
53 ModelPtr model_vm = static_cast<ModelPtr>(surf_cpu_model_vm);
54 xbt_dynar_push(model_list, &model_pm);
55 xbt_dynar_push(model_list, &model_vm);
58 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
60 char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
61 int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
63 if (!strcmp(optim, "Full")) {
64 p_updateMechanism = UM_FULL;
65 m_selectiveUpdate = select;
66 } else if (!strcmp(optim, "Lazy")) {
67 p_updateMechanism = UM_LAZY;
68 m_selectiveUpdate = 1;
69 xbt_assert((select == 1)
71 (xbt_cfg_is_default_value
72 (_sg_cfg_set, "cpu/maxmin_selective_update")),
73 "Disabling selective update while using the lazy update mechanism is dumb!");
75 xbt_die("Unsupported optimization (%s) for this model", optim);
78 p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
80 if (getUpdateMechanism() == UM_LAZY) {
81 shareResources = &CpuCas01Model::shareResourcesLazy;
82 updateActionsState = &CpuCas01Model::updateActionsStateLazy;
84 } else if (getUpdateMechanism() == UM_FULL) {
85 shareResources = &CpuCas01Model::shareResourcesFull;
86 updateActionsState = &CpuCas01Model::updateActionsStateFull;
88 xbt_die("Invalid cpu update mechanism!");
90 if (!p_maxminSystem) {
91 p_maxminSystem = lmm_system_new(m_selectiveUpdate);
94 if (getUpdateMechanism() == UM_LAZY) {
95 p_actionHeap = xbt_heap_new(8, NULL);
96 xbt_heap_set_update_callback(p_actionHeap, surf_action_lmm_update_index_heap);
97 p_modifiedSet = new ActionLmmList();
98 p_maxminSystem->keep_track = p_modifiedSet;
102 CpuCas01Model::~CpuCas01Model()
104 lmm_system_free(p_maxminSystem);
105 p_maxminSystem = NULL;
108 xbt_heap_free(p_actionHeap);
109 delete p_modifiedSet;
111 surf_cpu_model_pm = NULL;
113 delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
116 void CpuCas01Model::parseInit(sg_platf_host_cbarg_t host)
118 createResource(host->id,
129 CpuPtr CpuCas01Model::createResource(const char *name, xbt_dynar_t power_peak,
130 int pstate, double power_scale,
131 tmgr_trace_t power_trace, int core,
132 e_surf_resource_state_t state_initial,
133 tmgr_trace_t state_trace,
134 xbt_dict_t cpu_properties)
137 xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
138 "Host '%s' declared several times in the platform file",
140 xbt_assert(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
141 "Power has to be >0.0");
142 xbt_assert(core > 0, "Invalid number of cores %d", core);
144 cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
145 xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, static_cast<ResourcePtr>(cpu));
150 double CpuCas01Model::shareResourcesFull(double /*now*/)
152 return Model::shareResourcesMaxMin(getRunningActionSet(),
153 p_maxminSystem, lmm_solve);
156 void CpuCas01Model::addTraces()
158 xbt_dict_cursor_t cursor = NULL;
159 char *trace_name, *elm;
160 static int called = 0;
165 /* connect all traces relative to hosts */
166 xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
167 tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
168 CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
170 xbt_assert(host, "Host %s undefined", elm);
171 xbt_assert(trace, "Trace %s undefined", trace_name);
173 host->p_stateEvent = tmgr_history_add_trace(history, trace, 0.0, 0, static_cast<ResourcePtr>(host));
176 xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
177 tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
178 CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
180 xbt_assert(host, "Host %s undefined", elm);
181 xbt_assert(trace, "Trace %s undefined", trace_name);
184 tmgr_history_add_trace(history, trace, 0.0, 0, static_cast<ResourcePtr>(host));
191 CpuCas01::CpuCas01(CpuCas01ModelPtr model, const char *name, xbt_dynar_t powerPeak,
192 int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
193 e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
194 xbt_dict_t properties)
195 : Cpu(model, name, properties,
196 lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
197 core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale) {
199 p_powerPeakList = powerPeak;
202 p_energy = xbt_new(s_energy_cpu_cas01_t, 1);
203 p_energy->total_energy = 0;
204 p_energy->power_range_watts_list = getWattsRangeList();
205 p_energy->last_updated = surf_get_clock();
207 XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_powerPeak, m_pstate);
210 m_stateCurrent = stateInitial;
212 p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, static_cast<ResourcePtr>(this));
215 p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, static_cast<ResourcePtr>(this));
218 CpuCas01::~CpuCas01(){
220 xbt_dynar_t power_tuple = NULL;
221 xbt_dynar_foreach(p_energy->power_range_watts_list, iter, power_tuple)
222 xbt_dynar_free(&power_tuple);
223 xbt_dynar_free(&p_energy->power_range_watts_list);
224 xbt_dynar_free(&p_powerPeakList);
228 bool CpuCas01::isUsed()
230 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
233 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
235 lmm_variable_t var = NULL;
236 lmm_element_t elem = NULL;
238 if (event_type == p_powerEvent) {
239 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
240 xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
242 m_powerScale = value;
243 lmm_update_constraint_bound(surf_cpu_model_pm->getMaxminSystem(), getConstraint(),
244 m_core * m_powerScale *
247 TRACE_surf_host_set_power(date, getName(),
248 m_core * m_powerScale *
251 while ((var = lmm_get_var_from_cnst
252 (surf_cpu_model_pm->getMaxminSystem(), getConstraint(), &elem))) {
253 CpuCas01ActionPtr action = static_cast<CpuCas01ActionPtr>(static_cast<ActionPtr>(lmm_variable_id(var)));
255 lmm_update_variable_bound(surf_cpu_model_pm->getMaxminSystem(),
256 action->getVariable(),
257 m_powerScale * m_powerPeak);
259 if (tmgr_trace_event_free(event_type))
261 } else if (event_type == p_stateEvent) {
262 /* TODO (Hypervisor): do the same thing for constraint_core[i] */
263 xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
266 if(m_stateCurrent == SURF_RESOURCE_OFF)
267 xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
268 m_stateCurrent = SURF_RESOURCE_ON;
270 lmm_constraint_t cnst = getConstraint();
272 m_stateCurrent = SURF_RESOURCE_OFF;
274 while ((var = lmm_get_var_from_cnst(surf_cpu_model_pm->getMaxminSystem(), cnst, &elem))) {
275 ActionPtr action = static_cast<ActionPtr>(lmm_variable_id(var));
277 if (action->getState() == SURF_ACTION_RUNNING ||
278 action->getState() == SURF_ACTION_READY ||
279 action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
280 action->setFinishTime(date);
281 action->setState(SURF_ACTION_FAILED);
285 if (tmgr_trace_event_free(event_type))
288 XBT_CRITICAL("Unknown event ! \n");
295 CpuActionPtr CpuCas01::execute(double size)
298 XBT_IN("(%s,%g)", getName(), size);
299 CpuCas01ActionPtr action = new CpuCas01Action(surf_cpu_model_pm, size, m_stateCurrent != SURF_RESOURCE_ON,
300 m_powerScale * m_powerPeak, getConstraint());
306 CpuActionPtr CpuCas01::sleep(double duration)
309 duration = MAX(duration, MAXMIN_PRECISION);
311 XBT_IN("(%s,%g)", getName(), duration);
312 CpuCas01ActionPtr action = new CpuCas01Action(surf_cpu_model_pm, 1.0, m_stateCurrent != SURF_RESOURCE_ON,
313 m_powerScale * m_powerPeak, getConstraint());
316 // FIXME: sleep variables should not consume 1.0 in lmm_expand
317 action->m_maxDuration = duration;
318 action->m_suspended = 2;
319 if (duration == NO_MAX_DURATION) {
320 /* Move to the *end* of the corresponding action set. This convention
321 is used to speed up update_resource_state */
322 action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
323 action->p_stateSet = static_cast<CpuCas01ModelPtr>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
324 action->getStateSet()->push_back(*action);
327 lmm_update_variable_weight(surf_cpu_model_pm->getMaxminSystem(),
328 action->getVariable(), 0.0);
329 if (surf_cpu_model_pm->getUpdateMechanism() == UM_LAZY) { // remove action from the heap
330 action->heapRemove(surf_cpu_model_pm->getActionHeap());
331 // this is necessary for a variable with weight 0 since such
332 // variables are ignored in lmm and we need to set its max_duration
333 // correctly at the next call to share_resources
334 surf_cpu_model_pm->getModifiedSet()->push_front(*action);
341 xbt_dynar_t CpuCas01::getWattsRangeList()
343 xbt_dynar_t power_range_list;
344 xbt_dynar_t power_tuple;
345 int i = 0, pstate_nb=0;
346 xbt_dynar_t current_power_values;
347 double min_power, max_power;
349 if (getProperties() == NULL)
352 char* all_power_values_str = (char*)xbt_dict_get_or_null(getProperties(), "power_per_state");
354 if (all_power_values_str == NULL)
358 power_range_list = xbt_dynar_new(sizeof(xbt_dynar_t), NULL);
359 xbt_dynar_t all_power_values = xbt_str_split(all_power_values_str, ",");
361 pstate_nb = xbt_dynar_length(all_power_values);
362 for (i=0; i< pstate_nb; i++)
364 /* retrieve the power values associated with the current pstate */
365 current_power_values = xbt_str_split(xbt_dynar_get_as(all_power_values, i, char*), ":");
366 xbt_assert(xbt_dynar_length(current_power_values) > 1,
367 "Power properties incorrectly defined - could not retrieve min and max power values for host %s",
370 /* min_power corresponds to the idle power (cpu load = 0) */
371 /* max_power is the power consumed at 100% cpu load */
372 min_power = atof(xbt_dynar_get_as(current_power_values, 0, char*));
373 max_power = atof(xbt_dynar_get_as(current_power_values, 1, char*));
375 power_tuple = xbt_dynar_new(sizeof(double), NULL);
376 xbt_dynar_push_as(power_tuple, double, min_power);
377 xbt_dynar_push_as(power_tuple, double, max_power);
379 xbt_dynar_push_as(power_range_list, xbt_dynar_t, power_tuple);
380 xbt_dynar_free(¤t_power_values);
382 xbt_dynar_free(&all_power_values);
383 return power_range_list;
387 * Computes the power consumed by the host according to the current pstate and processor load
390 double CpuCas01::getCurrentWattsValue(double cpu_load)
392 xbt_dynar_t power_range_list = p_energy->power_range_watts_list;
394 if (power_range_list == NULL)
396 XBT_DEBUG("No power range properties specified for host %s", getName());
399 xbt_assert(xbt_dynar_length(power_range_list) == xbt_dynar_length(p_powerPeakList),
400 "The number of power ranges in the properties does not match the number of pstates for host %s",
403 /* retrieve the power values associated with the current pstate */
404 xbt_dynar_t current_power_values = xbt_dynar_get_as(power_range_list, m_pstate, xbt_dynar_t);
406 /* min_power corresponds to the idle power (cpu load = 0) */
407 /* max_power is the power consumed at 100% cpu load */
408 double min_power = xbt_dynar_get_as(current_power_values, 0, double);
409 double max_power = xbt_dynar_get_as(current_power_values, 1, double);
410 double power_slope = max_power - min_power;
412 double current_power = min_power + cpu_load * power_slope;
414 XBT_DEBUG("[get_current_watts] min_power=%f, max_power=%f, slope=%f", min_power, max_power, power_slope);
415 XBT_DEBUG("[get_current_watts] Current power (watts) = %f, load = %f", current_power, cpu_load);
417 return current_power;
421 * Updates the total energy consumed as the sum of the current energy and
422 * the energy consumed by the current action
424 void CpuCas01::updateEnergy(double cpu_load)
426 double start_time = p_energy->last_updated;
427 double finish_time = surf_get_clock();
429 XBT_DEBUG("[cpu_update_energy] action time interval=(%f-%f), current power peak=%f, current pstate=%d",
430 start_time, finish_time, m_powerPeak, m_pstate);
431 double current_energy = p_energy->total_energy;
432 double action_energy = getCurrentWattsValue(cpu_load)*(finish_time-start_time);
434 p_energy->total_energy = current_energy + action_energy;
435 p_energy->last_updated = finish_time;
437 XBT_DEBUG("[cpu_update_energy] old_energy_value=%f, action_energy_value=%f", current_energy, action_energy);
440 double CpuCas01::getCurrentPowerPeak()
445 double CpuCas01::getPowerPeakAt(int pstate_index)
447 xbt_dynar_t plist = p_powerPeakList;
448 xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
450 return xbt_dynar_get_as(plist, pstate_index, double);
453 int CpuCas01::getNbPstates()
455 return xbt_dynar_length(p_powerPeakList);
458 void CpuCas01::setPowerPeakAt(int pstate_index)
460 xbt_dynar_t plist = p_powerPeakList;
461 xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
463 double new_power_peak = xbt_dynar_get_as(plist, pstate_index, double);
464 m_pstate = pstate_index;
465 m_powerPeak = new_power_peak;
468 double CpuCas01::getConsumedEnergy()
470 return p_energy->total_energy;
477 CpuCas01Action::CpuCas01Action(ModelPtr model, double cost, bool failed, double power, lmm_constraint_t constraint)
478 : CpuAction(model, cost, failed,
479 lmm_variable_new(model->getMaxminSystem(), static_cast<ActionPtr>(this),
482 m_suspended = 0; /* Should be useless because of the
483 calloc but it seems to help valgrind... */
485 if (model->getUpdateMechanism() == UM_LAZY) {
487 m_lastUpdate = surf_get_clock();
490 lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
495 * Update the CPU total energy for a finished action
498 void CpuCas01Action::updateEnergy()
500 CpuCas01Ptr cpu = static_cast<CpuCas01Ptr>(lmm_constraint_id(lmm_get_cnst_from_var
501 (getModel()->getMaxminSystem(),
504 if(cpu->p_energy->last_updated < surf_get_clock()) {
505 double load = lmm_constraint_get_usage(cpu->getConstraint()) / cpu->m_powerPeak;
506 cpu->updateEnergy(load);