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Fix msg-start-kill-time
[simgrid.git] / src / surf / cpu_cas01.cpp
1 /* Copyright (c) 2009-2011. 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 "surf.hpp"
10 #include "maxmin_private.h"
11 #include "simgrid/sg_config.h"
12
13 extern "C" {
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf,
15                                 "Logging specific to the SURF CPU IMPROVED module");
16 }
17
18 static xbt_swag_t
19     cpu_running_action_set_that_does_not_need_being_checked = NULL;
20
21 /*************
22  * CallBacks *
23  *************/
24
25 static void parse_cpu_init(sg_platf_host_cbarg_t host){
26   ((CpuCas01ModelPtr)surf_cpu_model)->parseInit(host);
27 }
28
29 static void cpu_add_traces_cpu(){
30   surf_cpu_model->addTraces();
31 }
32
33 static void cpu_define_callbacks()
34 {
35   sg_platf_host_add_cb(parse_cpu_init);
36   sg_platf_postparse_add_cb(cpu_add_traces_cpu);
37 }
38
39 /*********
40  * Model *
41  *********/
42 void surf_cpu_model_init_Cas01()
43 {
44   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
45
46   if (surf_cpu_model)
47     return;
48
49   if (!strcmp(optim, "TI")) {
50     surf_cpu_model = new CpuTiModel();
51     return;
52   }
53
54   surf_cpu_model = new CpuCas01Model();
55   cpu_define_callbacks();
56   ModelPtr model = static_cast<ModelPtr>(surf_cpu_model);
57   xbt_dynar_push(model_list, &model);
58 }
59
60 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
61 {
62   ActionPtr action;
63   ActionLmmPtr actionlmm;
64
65   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
66   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
67
68   if (!strcmp(optim, "Full")) {
69     p_updateMechanism = UM_FULL;
70     m_selectiveUpdate = select;
71   } else if (!strcmp(optim, "Lazy")) {
72     p_updateMechanism = UM_LAZY;
73     m_selectiveUpdate = 1;
74     xbt_assert((select == 1)
75                ||
76                (xbt_cfg_is_default_value
77                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
78                "Disabling selective update while using the lazy update mechanism is dumb!");
79   } else {
80     xbt_die("Unsupported optimization (%s) for this model", optim);
81   }
82
83   cpu_running_action_set_that_does_not_need_being_checked =
84       xbt_swag_new(xbt_swag_offset(*action, p_stateHookup));
85
86   if (p_updateMechanism == UM_LAZY) {
87         shareResources = &CpuCas01Model::shareResourcesLazy;
88         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
89
90   } else if (p_updateMechanism == UM_FULL) {
91         shareResources = &CpuCas01Model::shareResourcesFull;
92         updateActionsState = &CpuCas01Model::updateActionsStateFull;
93   } else
94     xbt_die("Invalid cpu update mechanism!");
95
96   if (!p_maxminSystem) {
97     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
98   }
99
100   if (p_updateMechanism == UM_LAZY) {
101     p_actionHeap = xbt_heap_new(8, NULL);
102     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
103     p_modifiedSet = xbt_swag_new(xbt_swag_offset(*actionlmm, p_actionListHookup));
104     p_maxminSystem->keep_track = p_modifiedSet;
105   }
106 }
107
108 CpuCas01Model::~CpuCas01Model()
109 {
110   lmm_system_free(p_maxminSystem);
111   p_maxminSystem = NULL;
112
113   if (p_actionHeap)
114     xbt_heap_free(p_actionHeap);
115   xbt_swag_free(p_modifiedSet);
116
117   surf_cpu_model = NULL;
118
119   xbt_swag_free(cpu_running_action_set_that_does_not_need_being_checked);
120   cpu_running_action_set_that_does_not_need_being_checked = NULL;
121 }
122
123 void CpuCas01Model::parseInit(sg_platf_host_cbarg_t host)
124 {
125   createResource(host->id,
126         host->power_peak,
127         host->power_scale,
128         host->power_trace,
129         host->core_amount,
130         host->initial_state,
131         host->state_trace,
132         host->properties);
133 }
134 CpuCas01LmmPtr CpuCas01Model::createResource(const char *name, double power_peak, double power_scale,
135                           tmgr_trace_t power_trace, int core,
136                           e_surf_resource_state_t state_initial,
137                           tmgr_trace_t state_trace,
138                           xbt_dict_t cpu_properties)
139 {
140   CpuPtr cpu = NULL;
141   xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
142              "Host '%s' declared several times in the platform file",
143              name);
144   xbt_assert(power_peak > 0, "Power has to be >0");
145   xbt_assert(core > 0, "Invalid number of cores %d", core);
146
147   cpu = new CpuCas01Lmm(this, name, power_peak, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
148   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, static_cast<ResourcePtr>(cpu));
149
150   return (CpuCas01LmmPtr) xbt_lib_get_elm_or_null(host_lib, name);
151 }
152
153 double CpuCas01Model::shareResourcesFull(double now)
154 {
155   CpuCas01ActionLmm action;
156   Model::shareResourcesMaxMin(p_runningActionSet, 
157                              xbt_swag_offset(action, p_variable),
158                              p_maxminSystem, lmm_solve);
159   return 0;
160 }
161
162 void CpuCas01Model::addTraces()
163 {
164   xbt_dict_cursor_t cursor = NULL;
165   char *trace_name, *elm;
166   static int called = 0;
167   if (called)
168     return;
169   called = 1;
170
171   /* connect all traces relative to hosts */
172   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
173     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
174     CpuCas01LmmPtr host = (CpuCas01LmmPtr) surf_cpu_resource_priv(surf_cpu_resource_by_name(elm));
175
176     xbt_assert(host, "Host %s undefined", elm);
177     xbt_assert(trace, "Trace %s undefined", trace_name);
178
179     host->p_stateEvent =
180         tmgr_history_add_trace(history, trace, 0.0, 0, (ResourcePtr) host);
181   }
182
183   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
184     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
185     CpuCas01LmmPtr host = (CpuCas01LmmPtr) surf_cpu_resource_priv(surf_cpu_resource_by_name(elm));
186
187     xbt_assert(host, "Host %s undefined", elm);
188     xbt_assert(trace, "Trace %s undefined", trace_name);
189
190     host->p_powerEvent =
191         tmgr_history_add_trace(history, trace, 0.0, 0, (ResourcePtr) host);
192   }
193 }
194
195 /************
196  * Resource *
197  ************/
198 CpuCas01Lmm::CpuCas01Lmm(CpuCas01ModelPtr model, const char *name, double powerPeak,
199         double powerScale, tmgr_trace_t powerTrace, int core,
200         e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
201         xbt_dict_t properties) :
202         CpuLmm(model, name, properties), Resource(model, name, properties) {
203   m_powerPeak = powerPeak;
204   m_powerScale = powerScale;
205   m_core = core;
206   p_stateCurrent = stateInitial;
207   if (powerTrace)
208     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, static_cast<ResourcePtr>(this));
209
210   if (stateTrace)
211     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, static_cast<ResourcePtr>(this));
212
213   p_constraint = lmm_constraint_new(p_model->p_maxminSystem, this, m_core * m_powerScale * m_powerPeak);
214 }
215
216 bool CpuCas01Lmm::isUsed()
217 {
218   return lmm_constraint_used(p_model->p_maxminSystem, p_constraint);
219 }
220
221 void CpuCas01Lmm::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   surf_watched_hosts();
227
228   if (event_type == p_powerEvent) {
229     m_powerScale = value;
230     lmm_update_constraint_bound(surf_cpu_model->p_maxminSystem, p_constraint,
231                                 m_core * m_powerScale *
232                                 m_powerPeak);
233 #ifdef HAVE_TRACING
234     TRACE_surf_host_set_power(date, m_name,
235                               m_core * m_powerScale *
236                               m_powerPeak);
237 #endif
238     while ((var = lmm_get_var_from_cnst
239             (surf_cpu_model->p_maxminSystem, p_constraint, &elem))) {
240       CpuCas01ActionLmmPtr action = static_cast<CpuCas01ActionLmmPtr>(static_cast<ActionLmmPtr>(lmm_variable_id(var)));
241
242       lmm_update_variable_bound(surf_cpu_model->p_maxminSystem,
243                                 action->p_variable,
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     if (value > 0)
250       p_stateCurrent = SURF_RESOURCE_ON;
251     else {
252       lmm_constraint_t cnst = p_constraint;
253
254       p_stateCurrent = SURF_RESOURCE_OFF;
255
256       while ((var = lmm_get_var_from_cnst(surf_cpu_model->p_maxminSystem, cnst, &elem))) {
257         ActionLmmPtr action = static_cast<ActionLmmPtr>(lmm_variable_id(var));
258
259         if (action->getState() == SURF_ACTION_RUNNING ||
260             action->getState() == SURF_ACTION_READY ||
261             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
262           action->m_finish = date;
263           action->setState(SURF_ACTION_FAILED);
264         }
265       }
266     }
267     if (tmgr_trace_event_free(event_type))
268       p_stateEvent = NULL;
269   } else {
270     XBT_CRITICAL("Unknown event ! \n");
271     xbt_abort();
272   }
273
274   return;
275 }
276
277 ActionPtr CpuCas01Lmm::execute(double size)
278 {
279
280   XBT_IN("(%s,%g)", m_name, size);
281   CpuCas01ActionLmmPtr action = new CpuCas01ActionLmm(surf_cpu_model, size, p_stateCurrent != SURF_RESOURCE_ON);
282
283   action->m_suspended = 0;     /* Should be useless because of the
284                                                    calloc but it seems to help valgrind... */
285
286   action->p_variable =
287       lmm_variable_new(surf_cpu_model->p_maxminSystem, static_cast<ActionLmmPtr>(action),
288                        action->m_priority,
289                        m_powerScale * m_powerPeak, 1);
290   if (surf_cpu_model->p_updateMechanism == UM_LAZY) {
291     action->m_indexHeap = -1;
292     action->m_lastUpdate = surf_get_clock();
293     action->m_lastValue = 0.0;
294   }
295   lmm_expand(surf_cpu_model->p_maxminSystem, p_constraint,
296              action->p_variable, 1.0);
297   XBT_OUT();
298   return action;
299 }
300
301 ActionPtr CpuCas01Lmm::sleep(double duration)
302 {
303   if (duration > 0)
304     duration = MAX(duration, MAXMIN_PRECISION);
305
306   XBT_IN("(%s,%g)", m_name, duration);
307   CpuCas01ActionLmmPtr action = dynamic_cast<CpuCas01ActionLmmPtr>(execute(1.0));
308
309   // FIXME: sleep variables should not consume 1.0 in lmm_expand
310   action->m_maxDuration = duration;
311   action->m_suspended = 2;
312   if (duration == NO_MAX_DURATION) {
313     /* Move to the *end* of the corresponding action set. This convention
314        is used to speed up update_resource_state  */
315     xbt_swag_remove(static_cast<ActionPtr>(action), action->p_stateSet);
316     action->p_stateSet = cpu_running_action_set_that_does_not_need_being_checked;
317     xbt_swag_insert(static_cast<ActionPtr>(action), action->p_stateSet);
318   }
319
320   lmm_update_variable_weight(surf_cpu_model->p_maxminSystem,
321                              action->p_variable, 0.0);
322   if (surf_cpu_model->p_updateMechanism == UM_LAZY) {     // remove action from the heap
323     action->heapRemove(surf_cpu_model->p_actionHeap);
324     // this is necessary for a variable with weight 0 since such
325     // variables are ignored in lmm and we need to set its max_duration
326     // correctly at the next call to share_resources
327     xbt_swag_insert_at_head(static_cast<ActionLmmPtr>(action), surf_cpu_model->p_modifiedSet);
328   }
329
330   XBT_OUT();
331   return action;
332 }
333
334
335 /**********
336  * Action *
337  **********/
338
339