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Move the surf::As* classes into their own files
[simgrid.git] / src / surf / ptask_L07.cpp
1 /* Copyright (c) 2007-2010, 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 <cstdlib>
8
9 #include <algorithm>
10
11 #include "ptask_L07.hpp"
12
13 #include "cpu_interface.hpp"
14 #include "surf_routing.hpp"
15 #include "xbt/lib.h"
16
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_host);
18 XBT_LOG_EXTERNAL_CATEGORY(xbt_cfg);
19
20 /**************************************/
21 /*** Resource Creation & Destruction **/
22 /**************************************/
23
24 static void ptask_netlink_parse_init(sg_platf_link_cbarg_t link)
25 {
26   netlink_parse_init(link);
27   current_property_set = NULL;
28 }
29
30 void surf_host_model_init_ptask_L07(void)
31 {
32   XBT_CINFO(xbt_cfg,"Switching to the L07 model to handle parallel tasks.");
33   xbt_assert(!surf_cpu_model_pm, "CPU model type already defined");
34   xbt_assert(!surf_network_model, "network model type already defined");
35
36   // Define the callbacks to parse the XML
37   simgrid::surf::on_link.connect(ptask_netlink_parse_init);
38
39   surf_host_model = new simgrid::surf::HostL07Model();
40   xbt_dynar_push(all_existing_models, &surf_host_model);
41 }
42
43
44 namespace simgrid {
45 namespace surf {
46
47 HostL07Model::HostL07Model() : HostModel() {
48   p_maxminSystem = lmm_system_new(1);
49   surf_network_model = new NetworkL07Model(this,p_maxminSystem);
50   surf_cpu_model_pm = new CpuL07Model(this,p_maxminSystem);
51
52   routing_model_create(surf_network_model->createLink("__loopback__",
53                                                     498000000, NULL,
54                                                     0.000015, NULL,
55                                                     NULL,
56                                                     SURF_LINK_FATPIPE, NULL));
57 }
58
59 HostL07Model::~HostL07Model() {
60   delete surf_cpu_model_pm;
61   delete surf_network_model;
62 }
63
64 CpuL07Model::CpuL07Model(HostL07Model *hmodel,lmm_system_t sys)
65   : CpuModel()
66   , p_hostModel(hmodel)
67   {
68     p_maxminSystem = sys;
69   }
70 CpuL07Model::~CpuL07Model() {
71   surf_cpu_model_pm = NULL;
72   lmm_system_free(p_maxminSystem);
73   p_maxminSystem = NULL;
74 }
75 NetworkL07Model::NetworkL07Model(HostL07Model *hmodel, lmm_system_t sys)
76   : NetworkModel()
77   , p_hostModel(hmodel)
78   {
79     p_maxminSystem = sys;
80   }
81 NetworkL07Model::~NetworkL07Model()
82 {
83   surf_network_model = NULL;
84   p_maxminSystem = NULL; // Avoid multi-free
85 }
86
87
88 double HostL07Model::next_occuring_event(double /*now*/)
89 {
90   L07Action *action;
91
92   ActionList *running_actions = getRunningActionSet();
93   double min = this->shareResourcesMaxMin(running_actions,
94                                               p_maxminSystem,
95                                               bottleneck_solve);
96
97   for(ActionList::iterator it(running_actions->begin()), itend(running_actions->end())
98    ; it != itend ; ++it) {
99   action = static_cast<L07Action*>(&*it);
100     if (action->m_latency > 0) {
101       if (min < 0) {
102         min = action->m_latency;
103         XBT_DEBUG("Updating min (value) with %p (start %f): %f", action,
104                action->getStartTime(), min);
105       } else if (action->m_latency < min) {
106         min = action->m_latency;
107         XBT_DEBUG("Updating min (latency) with %p (start %f): %f", action,
108                action->getStartTime(), min);
109       }
110     }
111   }
112
113   XBT_DEBUG("min value : %f", min);
114
115   return min;
116 }
117
118 void HostL07Model::updateActionsState(double /*now*/, double delta) {
119
120   L07Action *action;
121   ActionList *actionSet = getRunningActionSet();
122
123   for(ActionList::iterator it = actionSet->begin(), itNext = it
124    ; it != actionSet->end()
125    ; it =  itNext) {
126   ++itNext;
127     action = static_cast<L07Action*>(&*it);
128     if (action->m_latency > 0) {
129       if (action->m_latency > delta) {
130         double_update(&(action->m_latency), delta, sg_surf_precision);
131       } else {
132         action->m_latency = 0.0;
133       }
134       if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
135         action->updateBound();
136         lmm_update_variable_weight(p_maxminSystem, action->getVariable(), 1.0);
137       }
138     }
139     XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
140            action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
141     action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
142
143     if (action->getMaxDuration() != NO_MAX_DURATION)
144       action->updateMaxDuration(delta);
145
146     XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
147
148     /* In the next if cascade, the action can be finished either because:
149      *  - The amount of remaining work reached 0
150      *  - The max duration was reached
151      * If it's not done, it may have failed.
152      */
153
154     if ((action->getRemains() <= 0) &&
155         (lmm_get_variable_weight(action->getVariable()) > 0)) {
156       action->finish();
157       action->setState(SURF_ACTION_DONE);
158     } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
159                (action->getMaxDuration() <= 0)) {
160       action->finish();
161       action->setState(SURF_ACTION_DONE);
162     } else {
163       /* Need to check that none of the model has failed */
164       lmm_constraint_t cnst = NULL;
165       int i = 0;
166
167       while ((cnst = lmm_get_cnst_from_var(p_maxminSystem, action->getVariable(), i++))) {
168         void *constraint_id = lmm_constraint_id(cnst);
169
170         if (static_cast<HostImpl*>(constraint_id)->isOff()) {
171           XBT_DEBUG("Action (%p) Failed!!", action);
172           action->finish();
173           action->setState(SURF_ACTION_FAILED);
174           break;
175         }
176       }
177     }
178   }
179   return;
180 }
181
182 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
183       double *flops_amount, double *bytes_amount,
184       double rate) {
185   return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
186 }
187
188
189 L07Action::L07Action(Model *model, int host_nb, sg_host_t*host_list,
190     double *flops_amount, double *bytes_amount, double rate)
191   : CpuAction(model, 1, 0)
192 {
193   int nb_link = 0;
194   int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
195   double latency = 0.0;
196
197   this->p_netcardList->reserve(host_nb);
198   for (int i = 0; i<host_nb; i++)
199     this->p_netcardList->push_back(host_list[i]->pimpl_netcard);
200
201   /* Compute the number of affected resources... */
202   if(bytes_amount != NULL) {
203     xbt_dict_t ptask_parallel_task_link_set = xbt_dict_new_homogeneous(NULL);
204
205     for (int i = 0; i < host_nb; i++) {
206       for (int j = 0; j < host_nb; j++) {
207
208         if (bytes_amount[i * host_nb + j] > 0) {
209           double lat=0.0;
210           std::vector<Link*> *route = new std::vector<Link*>();
211
212           routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
213           latency = MAX(latency, lat);
214
215           for (auto link : *route)
216             xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, NULL);
217           delete route;
218         }
219       }
220     }
221
222     nb_link = xbt_dict_length(ptask_parallel_task_link_set);
223     xbt_dict_free(&ptask_parallel_task_link_set);
224   }
225
226   for (int i = 0; i < host_nb; i++)
227     if (flops_amount[i] > 0)
228       nb_used_host++;
229
230   XBT_DEBUG("Creating a parallel task (%p) with %d hosts and %d unique links.", this, host_nb, nb_link);
231   this->p_computationAmount = flops_amount;
232   this->p_communicationAmount = bytes_amount;
233   this->m_latency = latency;
234   this->m_rate = rate;
235
236   this->p_variable = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
237       (rate > 0 ? rate : -1.0),
238       host_nb + nb_link);
239
240   if (this->m_latency > 0)
241     lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
242
243   for (int i = 0; i < host_nb; i++)
244     lmm_expand(model->getMaxminSystem(), host_list[i]->pimpl_cpu->getConstraint(),
245         this->getVariable(), flops_amount[i]);
246
247   if(bytes_amount != NULL) {
248     for (int i = 0; i < host_nb; i++) {
249       for (int j = 0; j < host_nb; j++) {
250
251         if (bytes_amount[i * host_nb + j] == 0.0)
252           continue;
253         std::vector<Link*> *route = new std::vector<Link*>();
254
255         routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, NULL);
256
257         for (auto link : *route)
258           lmm_expand_add(model->getMaxminSystem(), link->getConstraint(), this->getVariable(), bytes_amount[i * host_nb + j]);
259
260         delete route;
261       }
262     }
263   }
264
265   if (nb_link + nb_used_host == 0) {
266     this->setCost(1.0);
267     this->setRemains(0.0);
268   }
269   xbt_free(host_list);
270 }
271
272 Action *NetworkL07Model::communicate(NetCard *src, NetCard *dst,
273                                        double size, double rate)
274 {
275   sg_host_t*host_list = xbt_new0(sg_host_t, 2);
276   double *flops_amount = xbt_new0(double, 2);
277   double *bytes_amount = xbt_new0(double, 4);
278   Action *res = NULL;
279
280   host_list[0] = sg_host_by_name(src->name());
281   host_list[1] = sg_host_by_name(dst->name());
282   bytes_amount[1] = size;
283
284   res = p_hostModel->executeParallelTask(2, host_list, flops_amount, bytes_amount, rate);
285
286   return res;
287 }
288
289 Cpu *CpuL07Model::createCpu(simgrid::s4u::Host *host,  xbt_dynar_t powerPeakList,
290     tmgr_trace_t power_trace, int core, tmgr_trace_t state_trace)
291 {
292   CpuL07 *cpu = new CpuL07(this, host, powerPeakList, power_trace, core, state_trace);
293   return cpu;
294 }
295
296 Link* NetworkL07Model::createLink(const char *name,
297                                  double bw_initial,
298                                  tmgr_trace_t bw_trace,
299                                  double lat_initial,
300                                  tmgr_trace_t lat_trace,
301                                  tmgr_trace_t state_trace,
302                                  e_surf_link_sharing_policy_t policy,
303                                  xbt_dict_t properties)
304 {
305   xbt_assert(!Link::byName(name),
306            "Link '%s' declared several times in the platform file.", name);
307
308   Link* link = new LinkL07(this, name, properties,
309       bw_initial, bw_trace,
310       lat_initial, lat_trace,
311       state_trace,
312       policy);
313   Link::onCreation(link);
314   return link;
315 }
316
317 /************
318  * Resource *
319  ************/
320
321 CpuL07::CpuL07(CpuL07Model *model, simgrid::s4u::Host *host,
322     xbt_dynar_t speedPeakList,
323     tmgr_trace_t speedTrace,
324     int core, tmgr_trace_t state_trace)
325  : Cpu(model, host, speedPeakList, core, xbt_dynar_get_as(speedPeakList,0,double))
326 {
327   p_constraint = lmm_constraint_new(model->getMaxminSystem(), this, xbt_dynar_get_as(speedPeakList,0,double));
328
329   if (speedTrace)
330     p_speed.event = future_evt_set->add_trace(speedTrace, 0.0, this);
331
332   if (state_trace)
333     p_stateEvent = future_evt_set->add_trace(state_trace, 0.0, this);
334 }
335
336 CpuL07::~CpuL07()
337 {
338 }
339
340 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props,
341              double bw_initial, tmgr_trace_t bw_trace,
342              double lat_initial, tmgr_trace_t lat_trace,
343              tmgr_trace_t state_trace,
344              e_surf_link_sharing_policy_t policy)
345  : Link(model, name, props, lmm_constraint_new(model->getMaxminSystem(), this, bw_initial), state_trace)
346 {
347   m_bandwidth.peak = bw_initial;
348   if (bw_trace)
349     m_bandwidth.event = future_evt_set->add_trace(bw_trace, 0.0, this);
350
351   m_latency.peak = lat_initial;
352   if (lat_trace)
353     m_latency.event = future_evt_set->add_trace(lat_trace, 0.0, this);
354
355   if (policy == SURF_LINK_FATPIPE)
356     lmm_constraint_shared(getConstraint());
357 }
358
359 Action *CpuL07::execution_start(double size)
360 {
361   sg_host_t*host_list = xbt_new0(sg_host_t, 1);
362   double *flops_amount = xbt_new0(double, 1);
363
364   host_list[0] = getHost();
365   flops_amount[0] = size;
366
367   return static_cast<CpuL07Model*>(getModel())->p_hostModel
368     ->executeParallelTask( 1, host_list, flops_amount, NULL, -1);
369 }
370
371 Action *CpuL07::sleep(double duration)
372 {
373   L07Action *action = static_cast<L07Action*>(execution_start(1.0));
374   action->m_maxDuration = duration;
375   action->m_suspended = 2;
376   lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
377
378   return action;
379 }
380
381 bool CpuL07::isUsed(){
382   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
383 }
384
385 /** @brief take into account changes of speed (either load or max) */
386 void CpuL07::onSpeedChange() {
387   lmm_variable_t var = NULL;
388   lmm_element_t elem = NULL;
389
390     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), p_speed.peak * p_speed.scale);
391     while ((var = lmm_get_var_from_cnst
392             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
393       Action *action = static_cast<Action*>(lmm_variable_id(var));
394
395       lmm_update_variable_bound(getModel()->getMaxminSystem(),
396                                 action->getVariable(),
397                                 p_speed.scale * p_speed.peak);
398     }
399
400   Cpu::onSpeedChange();
401 }
402
403
404 bool LinkL07::isUsed(){
405   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
406 }
407
408 void CpuL07::apply_event(tmgr_trace_iterator_t triggered, double value){
409   XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
410   if (triggered == p_speed.event) {
411     p_speed.scale = value;
412     onSpeedChange();
413     tmgr_trace_event_unref(&p_speed.event);
414
415   } else if (triggered == p_stateEvent) {
416     if (value > 0)
417       turnOn();
418     else
419       turnOff();
420     tmgr_trace_event_unref(&p_stateEvent);
421
422   } else {
423     xbt_die("Unknown event!\n");
424   }
425 }
426
427 void LinkL07::apply_event(tmgr_trace_iterator_t triggered, double value) {
428   XBT_DEBUG("Updating link %s (%p) with value=%f", getName(), this, value);
429   if (triggered == m_bandwidth.event) {
430     updateBandwidth(value);
431     tmgr_trace_event_unref(&m_bandwidth.event);
432
433   } else if (triggered == m_latency.event) {
434     updateLatency(value);
435     tmgr_trace_event_unref(&m_latency.event);
436
437   } else if (triggered == m_stateEvent) {
438     if (value > 0)
439       turnOn();
440     else
441       turnOff();
442     tmgr_trace_event_unref(&m_stateEvent);
443
444   } else {
445     xbt_die("Unknown event ! \n");
446   }
447 }
448
449 void LinkL07::updateBandwidth(double value)
450 {
451   m_bandwidth.peak = value;
452   lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_bandwidth.peak * m_bandwidth.scale);
453 }
454
455 void LinkL07::updateLatency(double value)
456 {
457   lmm_variable_t var = NULL;
458   L07Action *action;
459   lmm_element_t elem = NULL;
460
461   m_latency.peak = value;
462   while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
463     action = static_cast<L07Action*>(lmm_variable_id(var));
464     action->updateBound();
465   }
466 }
467
468 /**********
469  * Action *
470  **********/
471
472 L07Action::~L07Action(){
473   delete p_netcardList;
474   free(p_communicationAmount);
475   free(p_computationAmount);
476 }
477
478 void L07Action::updateBound()
479 {
480   double lat_current = 0.0;
481   double lat_bound = -1.0;
482   int i, j;
483
484   int hostNb = p_netcardList->size();
485
486   if (p_communicationAmount != NULL) {
487     for (i = 0; i < hostNb; i++) {
488       for (j = 0; j < hostNb; j++) {
489
490         if (p_communicationAmount[i * hostNb + j] > 0) {
491           double lat = 0.0;
492           std::vector<Link*> *route = new std::vector<Link*>();
493           routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
494
495           lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
496           delete route;
497         }
498       }
499     }
500   }
501   lat_bound = sg_tcp_gamma / (2.0 * lat_current);
502   XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
503   if ((m_latency == 0.0) && (m_suspended == 0)) {
504     if (m_rate < 0)
505       lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
506     else
507       lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(),
508         std::min(m_rate, lat_bound));
509   }
510 }
511
512 int L07Action::unref()
513 {
514   m_refcount--;
515   if (!m_refcount) {
516     if (action_hook.is_linked())
517       p_stateSet->erase(p_stateSet->iterator_to(*this));
518     if (getVariable())
519       lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
520     delete this;
521     return 1;
522   }
523   return 0;
524 }
525
526 }
527 }