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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 "plugins/energy.hpp"
10 #include "maxmin_private.hpp"
11 #include "simgrid/sg_config.h"
12
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu,
14                                 "Logging specific to the SURF CPU IMPROVED module");
15
16 /*************
17  * CallBacks *
18  *************/
19
20 static void cpu_define_callbacks()
21 {
22   sg_platf_host_add_cb(cpu_parse_init);
23   sg_platf_postparse_add_cb(cpu_add_traces);
24 }
25
26 /*********
27  * Model *
28  *********/
29 void surf_cpu_model_init_Cas01()
30 {
31   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
32
33   xbt_assert(!surf_cpu_model_pm);
34   xbt_assert(!surf_cpu_model_vm);
35
36   if (!strcmp(optim, "TI")) {
37     surf_cpu_model_init_ti();
38     return;
39   }
40
41   surf_cpu_model_pm = new CpuCas01Model();
42   surf_cpu_model_vm  = new CpuCas01Model();
43
44   cpu_define_callbacks();
45   ModelPtr model_pm = static_cast<ModelPtr>(surf_cpu_model_pm);
46   ModelPtr model_vm = static_cast<ModelPtr>(surf_cpu_model_vm);
47   xbt_dynar_push(model_list, &model_pm);
48   xbt_dynar_push(model_list, &model_vm);
49 }
50
51 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
52 {
53   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
54   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
55
56   if (!strcmp(optim, "Full")) {
57     p_updateMechanism = UM_FULL;
58     m_selectiveUpdate = select;
59   } else if (!strcmp(optim, "Lazy")) {
60     p_updateMechanism = UM_LAZY;
61     m_selectiveUpdate = 1;
62     xbt_assert((select == 1)
63                ||
64                (xbt_cfg_is_default_value
65                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
66                "Disabling selective update while using the lazy update mechanism is dumb!");
67   } else {
68     xbt_die("Unsupported optimization (%s) for this model", optim);
69   }
70
71   p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
72
73   if (getUpdateMechanism() == UM_LAZY) {
74         shareResources = &CpuCas01Model::shareResourcesLazy;
75         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
76
77   } else if (getUpdateMechanism() == UM_FULL) {
78         shareResources = &CpuCas01Model::shareResourcesFull;
79         updateActionsState = &CpuCas01Model::updateActionsStateFull;
80   } else
81     xbt_die("Invalid cpu update mechanism!");
82
83   if (!p_maxminSystem) {
84     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
85   }
86
87   if (getUpdateMechanism() == UM_LAZY) {
88     p_actionHeap = xbt_heap_new(8, NULL);
89     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
90     p_modifiedSet = new ActionLmmList();
91     p_maxminSystem->keep_track = p_modifiedSet;
92   }
93 }
94
95 CpuCas01Model::~CpuCas01Model()
96 {
97   lmm_system_free(p_maxminSystem);
98   p_maxminSystem = NULL;
99
100   if (p_actionHeap)
101     xbt_heap_free(p_actionHeap);
102   delete p_modifiedSet;
103
104   surf_cpu_model_pm = NULL;
105
106   delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
107 }
108
109 CpuPtr CpuCas01Model::createCpu(const char *name, xbt_dynar_t power_peak,
110                                   int pstate, double power_scale,
111                           tmgr_trace_t power_trace, int core,
112                           e_surf_resource_state_t state_initial,
113                           tmgr_trace_t state_trace,
114                           xbt_dict_t cpu_properties)
115 {
116   CpuPtr cpu = NULL;
117   xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
118              "Host '%s' declared several times in the platform file",
119              name);
120   xbt_assert(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
121       "Power has to be >0.0");
122   xbt_assert(core > 0, "Invalid number of cores %d", core);
123
124   cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
125   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, static_cast<ResourcePtr>(cpu));
126
127   return cpu;
128 }
129
130 double CpuCas01Model::shareResourcesFull(double /*now*/)
131 {
132   return Model::shareResourcesMaxMin(getRunningActionSet(),
133                              p_maxminSystem, lmm_solve);
134 }
135
136 void CpuCas01Model::addTraces()
137 {
138   xbt_dict_cursor_t cursor = NULL;
139   char *trace_name, *elm;
140   static int called = 0;
141   if (called)
142     return;
143   called = 1;
144
145   /* connect all traces relative to hosts */
146   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
147     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
148     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
149
150     xbt_assert(host, "Host %s undefined", elm);
151     xbt_assert(trace, "Trace %s undefined", trace_name);
152
153     host->setStateEvent(tmgr_history_add_trace(history, trace, 0.0, 0, static_cast<ResourcePtr>(host)));
154   }
155
156   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
157     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
158     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
159
160     xbt_assert(host, "Host %s undefined", elm);
161     xbt_assert(trace, "Trace %s undefined", trace_name);
162
163     host->setPowerEvent(tmgr_history_add_trace(history, trace, 0.0, 0, static_cast<ResourcePtr>(host)));
164   }
165 }
166
167 /************
168  * Resource *
169  ************/
170 CpuCas01::CpuCas01(CpuCas01ModelPtr model, const char *name, xbt_dynar_t powerPeak,
171                          int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
172                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
173                          xbt_dict_t properties)
174 : Cpu(model, name, properties,
175           lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
176           core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale) {
177   p_powerEvent = NULL;
178   p_powerPeakList = powerPeak;
179   m_pstate = pstate;
180
181   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_powerPeak, m_pstate);
182
183   m_core = core;
184   setState(stateInitial);
185   if (powerTrace)
186     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, static_cast<ResourcePtr>(this));
187
188   if (stateTrace)
189     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, static_cast<ResourcePtr>(this));
190 }
191
192 CpuCas01::~CpuCas01(){
193   if (getModel() == surf_cpu_model_pm)
194     xbt_dynar_free(&p_powerPeakList);
195 }
196
197 void CpuCas01::setStateEvent(tmgr_trace_event_t stateEvent)
198 {
199   p_stateEvent = stateEvent;
200 }
201
202 void CpuCas01::setPowerEvent(tmgr_trace_event_t powerEvent)
203 {
204   p_powerEvent = powerEvent;
205 }
206
207 xbt_dynar_t CpuCas01::getPowerPeakList(){
208   return p_powerPeakList;
209 }
210
211 int CpuCas01::getPState()
212 {
213   return m_pstate;
214 }
215
216 bool CpuCas01::isUsed()
217 {
218   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
219 }
220
221 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
222 {
223   lmm_variable_t var = NULL;
224   lmm_element_t elem = NULL;
225
226   if (event_type == p_powerEvent) {
227         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
228         xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
229
230     m_powerScale = value;
231     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
232                                 m_core * m_powerScale *
233                                 m_powerPeak);
234 #ifdef HAVE_TRACING
235     TRACE_surf_host_set_power(date, getName(),
236                               m_core * m_powerScale *
237                               m_powerPeak);
238 #endif
239     while ((var = lmm_get_var_from_cnst
240             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
241       CpuCas01ActionPtr action = static_cast<CpuCas01ActionPtr>(static_cast<ActionPtr>(lmm_variable_id(var)));
242
243       lmm_update_variable_bound(getModel()->getMaxminSystem(),
244                                 action->getVariable(),
245                                 m_powerScale * m_powerPeak);
246     }
247     if (tmgr_trace_event_free(event_type))
248       p_powerEvent = NULL;
249   } else if (event_type == p_stateEvent) {
250         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
251     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
252
253     if (value > 0) {
254       if(getState() == SURF_RESOURCE_OFF)
255         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
256       setState(SURF_RESOURCE_ON);
257     } else {
258       lmm_constraint_t cnst = getConstraint();
259
260       setState(SURF_RESOURCE_OFF);
261
262       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
263         ActionPtr action = static_cast<ActionPtr>(lmm_variable_id(var));
264
265         if (action->getState() == SURF_ACTION_RUNNING ||
266             action->getState() == SURF_ACTION_READY ||
267             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
268           action->setFinishTime(date);
269           action->setState(SURF_ACTION_FAILED);
270         }
271       }
272     }
273     if (tmgr_trace_event_free(event_type))
274       p_stateEvent = NULL;
275   } else {
276     XBT_CRITICAL("Unknown event ! \n");
277     xbt_abort();
278   }
279
280   return;
281 }
282
283 CpuActionPtr CpuCas01::execute(double size)
284 {
285
286   XBT_IN("(%s,%g)", getName(), size);
287   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), size, getState() != SURF_RESOURCE_ON,
288                                                               m_powerScale * m_powerPeak, getConstraint());
289
290   XBT_OUT();
291   return action;
292 }
293
294 CpuActionPtr CpuCas01::sleep(double duration)
295 {
296   if (duration > 0)
297     duration = MAX(duration, sg_surf_precision);
298
299   XBT_IN("(%s,%g)", getName(), duration);
300   CpuCas01ActionPtr action = new CpuCas01Action(getModel(), 1.0, getState() != SURF_RESOURCE_ON,
301                                                       m_powerScale * m_powerPeak, getConstraint());
302
303
304   // FIXME: sleep variables should not consume 1.0 in lmm_expand
305   action->m_maxDuration = duration;
306   action->m_suspended = 2;
307   if (duration == NO_MAX_DURATION) {
308     /* Move to the *end* of the corresponding action set. This convention
309        is used to speed up update_resource_state  */
310         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
311     action->p_stateSet = static_cast<CpuCas01ModelPtr>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
312     action->getStateSet()->push_back(*action);
313   }
314
315   lmm_update_variable_weight(getModel()->getMaxminSystem(),
316                              action->getVariable(), 0.0);
317   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
318     action->heapRemove(getModel()->getActionHeap());
319     // this is necessary for a variable with weight 0 since such
320     // variables are ignored in lmm and we need to set its max_duration
321     // correctly at the next call to share_resources
322     getModel()->getModifiedSet()->push_front(*action);
323   }
324
325   XBT_OUT();
326   return action;
327 }
328
329 double CpuCas01::getCurrentPowerPeak()
330 {
331   return m_powerPeak;
332 }
333
334 double CpuCas01::getPowerPeakAt(int pstate_index)
335 {
336   xbt_dynar_t plist = p_powerPeakList;
337   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
338
339   return xbt_dynar_get_as(plist, pstate_index, double);
340 }
341
342 int CpuCas01::getNbPstates()
343 {
344   return xbt_dynar_length(p_powerPeakList);
345 }
346
347 void CpuCas01::setPowerPeakAt(int pstate_index)
348 {
349   xbt_dynar_t plist = p_powerPeakList;
350   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
351
352   double new_power_peak = xbt_dynar_get_as(plist, pstate_index, double);
353   m_pstate = pstate_index;
354   m_powerPeak = new_power_peak;
355 }
356
357 /**********
358  * Action *
359  **********/
360
361 CpuCas01Action::CpuCas01Action(ModelPtr model, double cost, bool failed, double power, lmm_constraint_t constraint)
362  : CpuAction(model, cost, failed,
363                      lmm_variable_new(model->getMaxminSystem(), static_cast<ActionPtr>(this),
364                      1.0, power, 1))
365 {
366   m_suspended = 0;
367   if (model->getUpdateMechanism() == UM_LAZY) {
368     m_indexHeap = -1;
369     m_lastUpdate = surf_get_clock();
370     m_lastValue = 0.0;
371   }
372   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
373 }