1 /* Copyright (c) 2007-2010, 2013-2015. The SimGrid Team.
2 * All rights reserved. */
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. */
11 #include "ptask_L07.hpp"
13 #include "cpu_interface.hpp"
14 #include "surf_routing.hpp"
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_host);
18 XBT_LOG_EXTERNAL_CATEGORY(xbt_cfg);
20 /**************************************/
21 /*** Resource Creation & Destruction **/
22 /**************************************/
24 static void ptask_netlink_parse_init(sg_platf_link_cbarg_t link)
26 netlink_parse_init(link);
27 current_property_set = NULL;
30 void surf_host_model_init_ptask_L07(void)
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");
36 // Define the callbacks to parse the XML
37 simgrid::surf::on_link.connect(ptask_netlink_parse_init);
39 surf_host_model = new simgrid::surf::HostL07Model();
40 xbt_dynar_push(all_existing_models, &surf_host_model);
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);
52 routing_model_create(surf_network_model->createLink("__loopback__",
56 SURF_LINK_FATPIPE, NULL));
59 HostL07Model::~HostL07Model() {
60 delete surf_cpu_model_pm;
61 delete surf_network_model;
64 CpuL07Model::CpuL07Model(HostL07Model *hmodel,lmm_system_t sys)
70 CpuL07Model::~CpuL07Model() {
71 surf_cpu_model_pm = NULL;
72 lmm_system_free(p_maxminSystem);
73 p_maxminSystem = NULL;
75 NetworkL07Model::NetworkL07Model(HostL07Model *hmodel, lmm_system_t sys)
81 NetworkL07Model::~NetworkL07Model()
83 surf_network_model = NULL;
84 p_maxminSystem = NULL; // Avoid multi-free
88 double HostL07Model::next_occuring_event(double /*now*/)
92 ActionList *running_actions = getRunningActionSet();
93 double min = this->shareResourcesMaxMin(running_actions,
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) {
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);
113 XBT_DEBUG("min value : %f", min);
118 void HostL07Model::updateActionsState(double /*now*/, double delta) {
121 ActionList *actionSet = getRunningActionSet();
123 for(ActionList::iterator it = actionSet->begin(), itNext = it
124 ; it != actionSet->end()
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);
132 action->m_latency = 0.0;
134 if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
135 action->updateBound();
136 lmm_update_variable_weight(p_maxminSystem, action->getVariable(), 1.0);
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);
143 if (action->getMaxDuration() != NO_MAX_DURATION)
144 action->updateMaxDuration(delta);
146 XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
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.
154 if ((action->getRemains() <= 0) &&
155 (lmm_get_variable_weight(action->getVariable()) > 0)) {
157 action->setState(SURF_ACTION_DONE);
158 } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
159 (action->getMaxDuration() <= 0)) {
161 action->setState(SURF_ACTION_DONE);
163 /* Need to check that none of the model has failed */
164 lmm_constraint_t cnst = NULL;
167 while ((cnst = lmm_get_cnst_from_var(p_maxminSystem, action->getVariable(), i++))) {
168 void *constraint_id = lmm_constraint_id(cnst);
170 if (static_cast<HostImpl*>(constraint_id)->isOff()) {
171 XBT_DEBUG("Action (%p) Failed!!", action);
173 action->setState(SURF_ACTION_FAILED);
182 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
183 double *flops_amount, double *bytes_amount,
185 return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
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)
194 int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
195 double latency = 0.0;
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);
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);
205 for (int i = 0; i < host_nb; i++) {
206 for (int j = 0; j < host_nb; j++) {
208 if (bytes_amount[i * host_nb + j] > 0) {
210 std::vector<Link*> *route = new std::vector<Link*>();
212 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
213 latency = MAX(latency, lat);
215 for (auto link : *route)
216 xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, NULL);
222 nb_link = xbt_dict_length(ptask_parallel_task_link_set);
223 xbt_dict_free(&ptask_parallel_task_link_set);
226 for (int i = 0; i < host_nb; i++)
227 if (flops_amount[i] > 0)
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;
236 this->p_variable = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
237 (rate > 0 ? rate : -1.0),
240 if (this->m_latency > 0)
241 lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
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]);
247 if(bytes_amount != NULL) {
248 for (int i = 0; i < host_nb; i++) {
249 for (int j = 0; j < host_nb; j++) {
251 if (bytes_amount[i * host_nb + j] == 0.0)
253 std::vector<Link*> *route = new std::vector<Link*>();
255 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, NULL);
257 for (auto link : *route)
258 lmm_expand_add(model->getMaxminSystem(), link->getConstraint(), this->getVariable(), bytes_amount[i * host_nb + j]);
265 if (nb_link + nb_used_host == 0) {
267 this->setRemains(0.0);
272 Action *NetworkL07Model::communicate(NetCard *src, NetCard *dst,
273 double size, double rate)
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);
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;
284 res = p_hostModel->executeParallelTask(2, host_list, flops_amount, bytes_amount, rate);
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)
292 CpuL07 *cpu = new CpuL07(this, host, powerPeakList, power_trace, core, state_trace);
296 Link* NetworkL07Model::createLink(const char *name,
298 tmgr_trace_t bw_trace,
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)
305 xbt_assert(!Link::byName(name),
306 "Link '%s' declared several times in the platform file.", name);
308 Link* link = new LinkL07(this, name, properties,
309 bw_initial, bw_trace,
310 lat_initial, lat_trace,
313 Link::onCreation(link);
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))
327 p_constraint = lmm_constraint_new(model->getMaxminSystem(), this, xbt_dynar_get_as(speedPeakList,0,double));
330 p_speed.event = future_evt_set->add_trace(speedTrace, 0.0, this);
333 p_stateEvent = future_evt_set->add_trace(state_trace, 0.0, this);
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)
347 m_bandwidth.peak = bw_initial;
349 m_bandwidth.event = future_evt_set->add_trace(bw_trace, 0.0, this);
351 m_latency.peak = lat_initial;
353 m_latency.event = future_evt_set->add_trace(lat_trace, 0.0, this);
355 if (policy == SURF_LINK_FATPIPE)
356 lmm_constraint_shared(getConstraint());
359 Action *CpuL07::execution_start(double size)
361 sg_host_t*host_list = xbt_new0(sg_host_t, 1);
362 double *flops_amount = xbt_new0(double, 1);
364 host_list[0] = getHost();
365 flops_amount[0] = size;
367 return static_cast<CpuL07Model*>(getModel())->p_hostModel
368 ->executeParallelTask( 1, host_list, flops_amount, NULL, -1);
371 Action *CpuL07::sleep(double duration)
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);
381 bool CpuL07::isUsed(){
382 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
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;
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));
395 lmm_update_variable_bound(getModel()->getMaxminSystem(),
396 action->getVariable(),
397 p_speed.scale * p_speed.peak);
400 Cpu::onSpeedChange();
404 bool LinkL07::isUsed(){
405 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
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;
413 tmgr_trace_event_unref(&p_speed.event);
415 } else if (triggered == p_stateEvent) {
420 tmgr_trace_event_unref(&p_stateEvent);
423 xbt_die("Unknown event!\n");
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);
433 } else if (triggered == m_latency.event) {
434 updateLatency(value);
435 tmgr_trace_event_unref(&m_latency.event);
437 } else if (triggered == m_stateEvent) {
442 tmgr_trace_event_unref(&m_stateEvent);
445 xbt_die("Unknown event ! \n");
449 void LinkL07::updateBandwidth(double value)
451 m_bandwidth.peak = value;
452 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_bandwidth.peak * m_bandwidth.scale);
455 void LinkL07::updateLatency(double value)
457 lmm_variable_t var = NULL;
459 lmm_element_t elem = NULL;
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();
472 L07Action::~L07Action(){
473 delete p_netcardList;
474 free(p_communicationAmount);
475 free(p_computationAmount);
478 void L07Action::updateBound()
480 double lat_current = 0.0;
481 double lat_bound = -1.0;
484 int hostNb = p_netcardList->size();
486 if (p_communicationAmount != NULL) {
487 for (i = 0; i < hostNb; i++) {
488 for (j = 0; j < hostNb; j++) {
490 if (p_communicationAmount[i * hostNb + j] > 0) {
492 std::vector<Link*> *route = new std::vector<Link*>();
493 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
495 lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
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)) {
505 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
507 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(),
508 std::min(m_rate, lat_bound));
512 int L07Action::unref()
516 if (action_hook.is_linked())
517 p_stateSet->erase(p_stateSet->iterator_to(*this));
519 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());