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[simgrid.git] / src / surf / cpu_cas01.cpp
1 /* Copyright (c) 2009-2011, 2013-2015. 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  * Model *
17  *********/
18 void surf_cpu_model_init_Cas01()
19 {
20   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
21
22   xbt_assert(!surf_cpu_model_pm);
23   xbt_assert(!surf_cpu_model_vm);
24
25   if (!strcmp(optim, "TI")) {
26     surf_cpu_model_init_ti();
27     return;
28   }
29
30   surf_cpu_model_pm = new simgrid::surf::CpuCas01Model();
31   surf_cpu_model_vm  = new simgrid::surf::CpuCas01Model();
32
33   sg_platf_postparse_add_cb(simgrid::surf::cpu_add_traces);
34
35   simgrid::surf::Model *model_pm = surf_cpu_model_pm;
36   simgrid::surf::Model *model_vm = surf_cpu_model_vm;
37   xbt_dynar_push(all_existing_models, &model_pm);
38   xbt_dynar_push(all_existing_models, &model_vm);
39 }
40
41 namespace simgrid {
42 namespace surf {
43
44 CpuCas01Model::CpuCas01Model() : simgrid::surf::CpuModel()
45 {
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");
48
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)
56                ||
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!");
60   } else {
61     xbt_die("Unsupported optimization (%s) for this model", optim);
62   }
63
64   p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
65
66   if (getUpdateMechanism() == UM_LAZY) {
67         shareResources = &CpuCas01Model::shareResourcesLazy;
68         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
69
70   } else if (getUpdateMechanism() == UM_FULL) {
71         shareResources = &CpuCas01Model::shareResourcesFull;
72         updateActionsState = &CpuCas01Model::updateActionsStateFull;
73   } else
74     xbt_die("Invalid cpu update mechanism!");
75
76   if (!p_maxminSystem) {
77     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
78   }
79
80   if (getUpdateMechanism() == UM_LAZY) {
81     p_actionHeap = xbt_heap_new(8, NULL);
82     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
83     p_modifiedSet = new ActionLmmList();
84     p_maxminSystem->keep_track = p_modifiedSet;
85   }
86 }
87
88 CpuCas01Model::~CpuCas01Model()
89 {
90   lmm_system_free(p_maxminSystem);
91   p_maxminSystem = NULL;
92
93   if (p_actionHeap)
94     xbt_heap_free(p_actionHeap);
95   delete p_modifiedSet;
96
97   surf_cpu_model_pm = NULL;
98
99   delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
100 }
101
102 Cpu *CpuCas01Model::createCpu(simgrid::Host *host, xbt_dynar_t speedPeak,
103                                   int pstate, double speedScale,
104                           tmgr_trace_t speedTrace, int core,
105                           e_surf_resource_state_t state_initial,
106                           tmgr_trace_t state_trace)
107 {
108   xbt_assert(xbt_dynar_getfirst_as(speedPeak, double) > 0.0,
109       "Speed has to be >0.0. Did you forget to specify the mandatory power attribute?");
110   xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
111   Cpu *cpu = new CpuCas01(this, host, speedPeak, pstate, speedScale, speedTrace, core, state_initial, state_trace);
112   return cpu;
113 }
114
115 double CpuCas01Model::shareResourcesFull(double /*now*/)
116 {
117   return Model::shareResourcesMaxMin(getRunningActionSet(),
118                              p_maxminSystem, lmm_solve);
119 }
120
121 void CpuCas01Model::addTraces()
122 {
123   xbt_dict_cursor_t cursor = NULL;
124   char *trace_name, *elm;
125   static int called = 0;
126   if (called)
127     return;
128   called = 1;
129
130   /* connect all traces relative to hosts */
131   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
132     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
133     CpuCas01 *host = static_cast<CpuCas01*>(sg_host_by_name(elm)->p_cpu);
134
135     xbt_assert(host, "Host %s undefined", elm);
136     xbt_assert(trace, "Trace %s undefined", trace_name);
137
138     host->setStateEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
139   }
140
141   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
142     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
143     CpuCas01 *host = static_cast<CpuCas01*>(sg_host_by_name(elm)->p_cpu);
144
145     xbt_assert(host, "Host %s undefined", elm);
146     xbt_assert(trace, "Trace %s undefined", trace_name);
147
148     host->setPowerEvent(tmgr_history_add_trace(history, trace, 0.0, 0, host));
149   }
150 }
151
152 /************
153  * Resource *
154  ************/
155 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::Host *host, xbt_dynar_t speedPeak,
156                          int pstate, double speedScale, tmgr_trace_t speedTrace, int core,
157                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace)
158 : Cpu(model, host,
159         lmm_constraint_new(model->getMaxminSystem(), this, core * speedScale * xbt_dynar_get_as(speedPeak, pstate, double)),
160         speedPeak, pstate,
161         core, xbt_dynar_get_as(speedPeak, pstate, double), speedScale,
162     stateInitial) {
163   p_speedEvent = NULL;
164
165   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_speedPeak, m_pstate);
166
167   m_core = core;
168   if (speedTrace)
169     p_speedEvent = tmgr_history_add_trace(history, speedTrace, 0.0, 0, this);
170
171   if (stateTrace)
172     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, this);
173 }
174
175 CpuCas01::~CpuCas01()
176 {
177   if (getModel() == surf_cpu_model_pm)
178     xbt_dynar_free(&p_speedPeakList);
179 }
180
181 void CpuCas01::setStateEvent(tmgr_trace_event_t stateEvent)
182 {
183   p_stateEvent = stateEvent;
184 }
185
186 void CpuCas01::setPowerEvent(tmgr_trace_event_t powerEvent)
187 {
188   p_speedEvent = powerEvent;
189 }
190
191 xbt_dynar_t CpuCas01::getSpeedPeakList(){
192   return p_speedPeakList;
193 }
194
195 bool CpuCas01::isUsed()
196 {
197   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
198 }
199
200 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
201 {
202   lmm_variable_t var = NULL;
203   lmm_element_t elem = NULL;
204
205   if (event_type == p_speedEvent) {
206         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
207         xbt_assert(m_core == 1, "FIXME: add speed scaling code also for constraint_core[i]");
208
209     m_speedScale = value;
210     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
211                                 m_core * m_speedScale *
212                                 m_speedPeak);
213     TRACE_surf_host_set_speed(date, getName(),
214                               m_core * m_speedScale *
215                               m_speedPeak);
216     while ((var = lmm_get_var_from_cnst
217             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
218       CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
219
220       lmm_update_variable_bound(getModel()->getMaxminSystem(),
221                                 action->getVariable(),
222                                 m_speedScale * m_speedPeak);
223     }
224     if (tmgr_trace_event_free(event_type))
225       p_speedEvent = NULL;
226   } else if (event_type == p_stateEvent) {
227         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
228     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
229
230     if (value > 0) {
231       if(getState() == SURF_RESOURCE_OFF)
232         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
233       setState(SURF_RESOURCE_ON);
234     } else {
235       lmm_constraint_t cnst = getConstraint();
236
237       setState(SURF_RESOURCE_OFF);
238
239       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
240         Action *action = static_cast<Action*>(lmm_variable_id(var));
241
242         if (action->getState() == SURF_ACTION_RUNNING ||
243             action->getState() == SURF_ACTION_READY ||
244             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
245           action->setFinishTime(date);
246           action->setState(SURF_ACTION_FAILED);
247         }
248       }
249     }
250     if (tmgr_trace_event_free(event_type))
251       p_stateEvent = NULL;
252   } else {
253     XBT_CRITICAL("Unknown event ! \n");
254     xbt_abort();
255   }
256
257   return;
258 }
259
260 CpuAction *CpuCas01::execute(double size)
261 {
262
263   XBT_IN("(%s,%g)", getName(), size);
264   CpuCas01Action *action = new CpuCas01Action(getModel(), size, getState() != SURF_RESOURCE_ON,
265                                                               m_speedScale * m_speedPeak, getConstraint());
266
267   XBT_OUT();
268   return action;
269 }
270
271 CpuAction *CpuCas01::sleep(double duration)
272 {
273   if (duration > 0)
274     duration = MAX(duration, sg_surf_precision);
275
276   XBT_IN("(%s,%g)", getName(), duration);
277   CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, getState() != SURF_RESOURCE_ON,
278                                                       m_speedScale * m_speedPeak, getConstraint());
279
280
281   // FIXME: sleep variables should not consume 1.0 in lmm_expand
282   action->m_maxDuration = duration;
283   action->m_suspended = 2;
284   if (duration == NO_MAX_DURATION) {
285     /* Move to the *end* of the corresponding action set. This convention
286        is used to speed up update_resource_state  */
287         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
288     action->p_stateSet = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
289     action->getStateSet()->push_back(*action);
290   }
291
292   lmm_update_variable_weight(getModel()->getMaxminSystem(),
293                              action->getVariable(), 0.0);
294   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
295     action->heapRemove(getModel()->getActionHeap());
296     // this is necessary for a variable with weight 0 since such
297     // variables are ignored in lmm and we need to set its max_duration
298     // correctly at the next call to share_resources
299     getModel()->getModifiedSet()->push_front(*action);
300   }
301
302   XBT_OUT();
303   return action;
304 }
305
306 double CpuCas01::getCurrentPowerPeak()
307 {
308   return m_speedPeak;
309 }
310
311 /**********
312  * Action *
313  **********/
314
315 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double speed, lmm_constraint_t constraint)
316  : CpuAction(model, cost, failed,
317                      lmm_variable_new(model->getMaxminSystem(), this,
318                      1.0, speed, 1))
319 {
320   if (model->getUpdateMechanism() == UM_LAZY) {
321     m_indexHeap = -1;
322     m_lastUpdate = surf_get_clock();
323     m_lastValue = 0.0;
324   }
325   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
326 }
327
328 }
329 }