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[simgrid.git] / src / surf / cpu_cas01.cpp
1 /* Copyright (c) 2009-2011, 2013-2014. The SimGrid Team.
2  * All rights reserved.                                                     */
3
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. */
6
7 #include "cpu_cas01.hpp"
8 #include "cpu_ti.hpp"
9 #include "maxmin_private.hpp"
10 #include "simgrid/sg_config.h"
11
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu,
13                                 "Logging specific to the SURF CPU IMPROVED module");
14
15 /*************
16  * CallBacks *
17  *************/
18
19 static void cpu_define_callbacks()
20 {
21   sg_platf_host_add_cb(cpu_parse_init);
22   sg_platf_postparse_add_cb(cpu_add_traces);
23 }
24
25 /*********
26  * Model *
27  *********/
28 void surf_cpu_model_init_Cas01()
29 {
30   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
31
32   xbt_assert(!surf_cpu_model_pm);
33   xbt_assert(!surf_cpu_model_vm);
34
35   if (!strcmp(optim, "TI")) {
36     surf_cpu_model_init_ti();
37     return;
38   }
39
40   surf_cpu_model_pm = new CpuCas01Model();
41   surf_cpu_model_vm  = new CpuCas01Model();
42
43   cpu_define_callbacks();
44   ModelPtr model_pm = surf_cpu_model_pm;
45   ModelPtr model_vm = surf_cpu_model_vm;
46   xbt_dynar_push(model_list, &model_pm);
47   xbt_dynar_push(model_list, &model_vm);
48 }
49
50 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
51 {
52   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
53   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
54
55   if (!strcmp(optim, "Full")) {
56     p_updateMechanism = UM_FULL;
57     m_selectiveUpdate = select;
58   } else if (!strcmp(optim, "Lazy")) {
59     p_updateMechanism = UM_LAZY;
60     m_selectiveUpdate = 1;
61     xbt_assert((select == 1)
62                ||
63                (xbt_cfg_is_default_value
64                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
65                "Disabling selective update while using the lazy update mechanism is dumb!");
66   } else {
67     xbt_die("Unsupported optimization (%s) for this model", optim);
68   }
69
70   p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
71
72   if (getUpdateMechanism() == UM_LAZY) {
73         shareResources = &CpuCas01Model::shareResourcesLazy;
74         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
75
76   } else if (getUpdateMechanism() == UM_FULL) {
77         shareResources = &CpuCas01Model::shareResourcesFull;
78         updateActionsState = &CpuCas01Model::updateActionsStateFull;
79   } else
80     xbt_die("Invalid cpu update mechanism!");
81
82   if (!p_maxminSystem) {
83     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
84   }
85
86   if (getUpdateMechanism() == UM_LAZY) {
87     p_actionHeap = xbt_heap_new(8, NULL);
88     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
89     p_modifiedSet = new ActionLmmList();
90     p_maxminSystem->keep_track = p_modifiedSet;
91   }
92 }
93
94 CpuCas01Model::~CpuCas01Model()
95 {
96   lmm_system_free(p_maxminSystem);
97   p_maxminSystem = NULL;
98
99   if (p_actionHeap)
100     xbt_heap_free(p_actionHeap);
101   delete p_modifiedSet;
102
103   surf_cpu_model_pm = NULL;
104
105   delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
106 }
107
108 CpuPtr CpuCas01Model::createCpu(const char *name, xbt_dynar_t power_peak,
109                                   int pstate, double power_scale,
110                           tmgr_trace_t power_trace, int core,
111                           e_surf_resource_state_t state_initial,
112                           tmgr_trace_t state_trace,
113                           xbt_dict_t cpu_properties)
114 {
115   CpuPtr cpu = NULL;
116   xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
117              "Host '%s' declared several times in the platform file",
118              name);
119   xbt_assert(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
120       "Power has to be >0.0. Did you forget to specify the mandatory power attribute?");
121   xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
122
123   cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
124   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
125
126   return cpu;
127 }
128
129 double CpuCas01Model::shareResourcesFull(double /*now*/)
130 {
131   return Model::shareResourcesMaxMin(getRunningActionSet(),
132                              p_maxminSystem, lmm_solve);
133 }
134
135 void CpuCas01Model::addTraces()
136 {
137   xbt_dict_cursor_t cursor = NULL;
138   char *trace_name, *elm;
139   static int called = 0;
140   if (called)
141     return;
142   called = 1;
143
144   /* connect all traces relative to hosts */
145   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
146     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
147     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
148
149     xbt_assert(host, "Host %s undefined", elm);
150     xbt_assert(trace, "Trace %s undefined", trace_name);
151
152     host->setStateEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
153   }
154
155   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
156     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
157     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
158
159     xbt_assert(host, "Host %s undefined", elm);
160     xbt_assert(trace, "Trace %s undefined", trace_name);
161
162     host->setPowerEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
163   }
164 }
165
166 /************
167  * Resource *
168  ************/
169 CpuCas01::CpuCas01(CpuCas01ModelPtr model, const char *name, xbt_dynar_t powerPeak,
170                          int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
171                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
172                          xbt_dict_t properties)
173 : Cpu(model, name, properties,
174           lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
175           core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale) {
176   p_powerEvent = NULL;
177   p_powerPeakList = powerPeak;
178   m_pstate = pstate;
179
180   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_powerPeak, m_pstate);
181
182   m_core = core;
183   setState(stateInitial);
184   if (powerTrace)
185     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, this);
186
187   if (stateTrace)
188     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, this);
189 }
190
191 CpuCas01::~CpuCas01(){
192   if (getModel() == surf_cpu_model_pm)
193     xbt_dynar_free(&p_powerPeakList);
194 }
195
196 void CpuCas01::setStateEvent(tmgr_trace_event_t stateEvent)
197 {
198   p_stateEvent = stateEvent;
199 }
200
201 void CpuCas01::setPowerEvent(tmgr_trace_event_t powerEvent)
202 {
203   p_powerEvent = powerEvent;
204 }
205
206 xbt_dynar_t CpuCas01::getPowerPeakList(){
207   return p_powerPeakList;
208 }
209
210 int CpuCas01::getPState()
211 {
212   return m_pstate;
213 }
214
215 bool CpuCas01::isUsed()
216 {
217   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
218 }
219
220 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
221 {
222   lmm_variable_t var = NULL;
223   lmm_element_t elem = NULL;
224
225   if (event_type == p_powerEvent) {
226         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
227         xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
228
229     m_powerScale = value;
230     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
231                                 m_core * m_powerScale *
232                                 m_powerPeak);
233 #ifdef HAVE_TRACING
234     TRACE_surf_host_set_power(date, getName(),
235                               m_core * m_powerScale *
236                               m_powerPeak);
237 #endif
238     while ((var = lmm_get_var_from_cnst
239             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
240       CpuCas01ActionPtr action = static_cast<CpuCas01ActionPtr>(lmm_variable_id(var));
241
242       lmm_update_variable_bound(getModel()->getMaxminSystem(),
243                                 action->getVariable(),
244                                 m_powerScale * m_powerPeak);
245     }
246     if (tmgr_trace_event_free(event_type))
247       p_powerEvent = NULL;
248   } else if (event_type == p_stateEvent) {
249         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
250     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
251
252     if (value > 0) {
253       if(getState() == SURF_RESOURCE_OFF)
254         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
255       setState(SURF_RESOURCE_ON);
256     } else {
257       lmm_constraint_t cnst = getConstraint();
258
259       setState(SURF_RESOURCE_OFF);
260
261       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
262         ActionPtr action = static_cast<ActionPtr>(lmm_variable_id(var));
263
264         if (action->getState() == SURF_ACTION_RUNNING ||
265             action->getState() == SURF_ACTION_READY ||
266             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
267           action->setFinishTime(date);
268           action->setState(SURF_ACTION_FAILED);
269         }
270       }
271     }
272     if (tmgr_trace_event_free(event_type))
273       p_stateEvent = NULL;
274   } else {
275     XBT_CRITICAL("Unknown event ! \n");
276     xbt_abort();
277   }
278
279   return;
280 }
281
282 CpuActionPtr CpuCas01::execute(double size)
283 {
284
285   XBT_IN("(%s,%g)", getName(), size);
286   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), size, getState() != SURF_RESOURCE_ON,
287                                                               m_powerScale * m_powerPeak, getConstraint());
288
289   XBT_OUT();
290   return action;
291 }
292
293 CpuActionPtr CpuCas01::sleep(double duration)
294 {
295   if (duration > 0)
296     duration = MAX(duration, sg_surf_precision);
297
298   XBT_IN("(%s,%g)", getName(), duration);
299   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), 1.0, getState() != SURF_RESOURCE_ON,
300                                                       m_powerScale * m_powerPeak, getConstraint());
301
302
303   // FIXME: sleep variables should not consume 1.0 in lmm_expand
304   action->m_maxDuration = duration;
305   action->m_suspended = 2;
306   if (duration == NO_MAX_DURATION) {
307     /* Move to the *end* of the corresponding action set. This convention
308        is used to speed up update_resource_state  */
309         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
310     action->p_stateSet = static_cast<CpuCas01ModelPtr>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
311     action->getStateSet()->push_back(*action);
312   }
313
314   lmm_update_variable_weight(getModel()->getMaxminSystem(),
315                              action->getVariable(), 0.0);
316   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
317     action->heapRemove(getModel()->getActionHeap());
318     // this is necessary for a variable with weight 0 since such
319     // variables are ignored in lmm and we need to set its max_duration
320     // correctly at the next call to share_resources
321     getModel()->getModifiedSet()->push_front(*action);
322   }
323
324   XBT_OUT();
325   return action;
326 }
327
328 double CpuCas01::getCurrentPowerPeak()
329 {
330   return m_powerPeak;
331 }
332
333 double CpuCas01::getPowerPeakAt(int pstate_index)
334 {
335   xbt_dynar_t plist = p_powerPeakList;
336   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
337
338   return xbt_dynar_get_as(plist, pstate_index, double);
339 }
340
341 int CpuCas01::getNbPstates()
342 {
343   return xbt_dynar_length(p_powerPeakList);
344 }
345
346 void CpuCas01::setPowerPeakAt(int pstate_index)
347 {
348   xbt_dynar_t plist = p_powerPeakList;
349   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
350
351   double new_power_peak = xbt_dynar_get_as(plist, pstate_index, double);
352   m_pstate = pstate_index;
353   m_powerPeak = new_power_peak;
354 }
355
356 /**********
357  * Action *
358  **********/
359
360 CpuCas01Action::CpuCas01Action(ModelPtr model, double cost, bool failed, double power, lmm_constraint_t constraint)
361  : CpuAction(model, cost, failed,
362                      lmm_variable_new(model->getMaxminSystem(), this,
363                      1.0, power, 1))
364 {
365   m_suspended = 0;
366   if (model->getUpdateMechanism() == UM_LAZY) {
367     m_indexHeap = -1;
368     m_lastUpdate = surf_get_clock();
369     m_lastValue = 0.0;
370   }
371   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
372 }