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__",
55 SURF_LINK_FATPIPE, NULL));
58 HostL07Model::~HostL07Model() {
59 delete surf_cpu_model_pm;
60 delete surf_network_model;
63 CpuL07Model::CpuL07Model(HostL07Model *hmodel,lmm_system_t sys)
69 CpuL07Model::~CpuL07Model() {
70 surf_cpu_model_pm = NULL;
71 lmm_system_free(p_maxminSystem);
72 p_maxminSystem = NULL;
74 NetworkL07Model::NetworkL07Model(HostL07Model *hmodel, lmm_system_t sys)
80 NetworkL07Model::~NetworkL07Model()
82 surf_network_model = NULL;
83 p_maxminSystem = NULL; // Avoid multi-free
87 double HostL07Model::next_occuring_event(double /*now*/)
91 ActionList *running_actions = getRunningActionSet();
92 double min = this->shareResourcesMaxMin(running_actions,
96 for(ActionList::iterator it(running_actions->begin()), itend(running_actions->end())
97 ; it != itend ; ++it) {
98 action = static_cast<L07Action*>(&*it);
99 if (action->m_latency > 0) {
101 min = action->m_latency;
102 XBT_DEBUG("Updating min (value) with %p (start %f): %f", action,
103 action->getStartTime(), min);
104 } else if (action->m_latency < min) {
105 min = action->m_latency;
106 XBT_DEBUG("Updating min (latency) with %p (start %f): %f", action,
107 action->getStartTime(), min);
112 XBT_DEBUG("min value : %f", min);
117 void HostL07Model::updateActionsState(double /*now*/, double delta) {
120 ActionList *actionSet = getRunningActionSet();
122 for(ActionList::iterator it = actionSet->begin(), itNext = it
123 ; it != actionSet->end()
126 action = static_cast<L07Action*>(&*it);
127 if (action->m_latency > 0) {
128 if (action->m_latency > delta) {
129 double_update(&(action->m_latency), delta, sg_surf_precision);
131 action->m_latency = 0.0;
133 if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
134 action->updateBound();
135 lmm_update_variable_weight(p_maxminSystem, action->getVariable(), 1.0);
138 XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
139 action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
140 action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
142 if (action->getMaxDuration() != NO_MAX_DURATION)
143 action->updateMaxDuration(delta);
145 XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
147 /* In the next if cascade, the action can be finished either because:
148 * - The amount of remaining work reached 0
149 * - The max duration was reached
150 * If it's not done, it may have failed.
153 if ((action->getRemains() <= 0) &&
154 (lmm_get_variable_weight(action->getVariable()) > 0)) {
156 action->setState(SURF_ACTION_DONE);
157 } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
158 (action->getMaxDuration() <= 0)) {
160 action->setState(SURF_ACTION_DONE);
162 /* Need to check that none of the model has failed */
163 lmm_constraint_t cnst = NULL;
166 while ((cnst = lmm_get_cnst_from_var(p_maxminSystem, action->getVariable(), i++))) {
167 void *constraint_id = lmm_constraint_id(cnst);
169 if (static_cast<HostImpl*>(constraint_id)->isOff()) {
170 XBT_DEBUG("Action (%p) Failed!!", action);
172 action->setState(SURF_ACTION_FAILED);
181 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
182 double *flops_amount, double *bytes_amount,
184 return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
188 L07Action::L07Action(Model *model, int host_nb, sg_host_t*host_list,
189 double *flops_amount, double *bytes_amount, double rate)
190 : CpuAction(model, 1, 0)
193 int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
194 double latency = 0.0;
196 this->p_netcardList->reserve(host_nb);
197 for (int i = 0; i<host_nb; i++)
198 this->p_netcardList->push_back(host_list[i]->pimpl_netcard);
200 /* Compute the number of affected resources... */
201 if(bytes_amount != NULL) {
202 xbt_dict_t ptask_parallel_task_link_set = xbt_dict_new_homogeneous(NULL);
204 for (int i = 0; i < host_nb; i++) {
205 for (int j = 0; j < host_nb; j++) {
207 if (bytes_amount[i * host_nb + j] > 0) {
209 std::vector<Link*> *route = new std::vector<Link*>();
211 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
212 latency = MAX(latency, lat);
214 for (auto link : *route)
215 xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, NULL);
221 nb_link = xbt_dict_length(ptask_parallel_task_link_set);
222 xbt_dict_free(&ptask_parallel_task_link_set);
225 for (int i = 0; i < host_nb; i++)
226 if (flops_amount[i] > 0)
229 XBT_DEBUG("Creating a parallel task (%p) with %d hosts and %d unique links.", this, host_nb, nb_link);
230 this->p_computationAmount = flops_amount;
231 this->p_communicationAmount = bytes_amount;
232 this->m_latency = latency;
235 this->p_variable = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
236 (rate > 0 ? rate : -1.0),
239 if (this->m_latency > 0)
240 lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
242 for (int i = 0; i < host_nb; i++)
243 lmm_expand(model->getMaxminSystem(), host_list[i]->pimpl_cpu->getConstraint(),
244 this->getVariable(), flops_amount[i]);
246 if(bytes_amount != NULL) {
247 for (int i = 0; i < host_nb; i++) {
248 for (int j = 0; j < host_nb; j++) {
250 if (bytes_amount[i * host_nb + j] == 0.0)
252 std::vector<Link*> *route = new std::vector<Link*>();
254 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, NULL);
256 for (auto link : *route)
257 lmm_expand_add(model->getMaxminSystem(), link->getConstraint(), this->getVariable(), bytes_amount[i * host_nb + j]);
264 if (nb_link + nb_used_host == 0) {
266 this->setRemains(0.0);
271 Action *NetworkL07Model::communicate(NetCard *src, NetCard *dst,
272 double size, double rate)
274 sg_host_t*host_list = xbt_new0(sg_host_t, 2);
275 double *flops_amount = xbt_new0(double, 2);
276 double *bytes_amount = xbt_new0(double, 4);
279 host_list[0] = sg_host_by_name(src->name());
280 host_list[1] = sg_host_by_name(dst->name());
281 bytes_amount[1] = size;
283 res = p_hostModel->executeParallelTask(2, host_list, flops_amount, bytes_amount, rate);
288 Cpu *CpuL07Model::createCpu(simgrid::s4u::Host *host, xbt_dynar_t powerPeakList,
289 tmgr_trace_t power_trace, int core, tmgr_trace_t state_trace)
291 CpuL07 *cpu = new CpuL07(this, host, powerPeakList, power_trace, core, state_trace);
295 Link* NetworkL07Model::createLink(const char *name,
296 double bw_initial, tmgr_trace_t bw_trace,
297 double lat_initial, tmgr_trace_t lat_trace,
298 e_surf_link_sharing_policy_t policy, xbt_dict_t properties)
300 xbt_assert(!Link::byName(name),
301 "Link '%s' declared several times in the platform.", name);
303 Link* link = new LinkL07(this, name, properties, bw_initial, bw_trace, lat_initial, lat_trace, policy);
304 Link::onCreation(link);
312 CpuL07::CpuL07(CpuL07Model *model, simgrid::s4u::Host *host,
313 xbt_dynar_t speedPeakList,
314 tmgr_trace_t speedTrace,
315 int core, tmgr_trace_t state_trace)
316 : Cpu(model, host, speedPeakList, core, xbt_dynar_get_as(speedPeakList,0,double))
318 p_constraint = lmm_constraint_new(model->getMaxminSystem(), this, xbt_dynar_get_as(speedPeakList,0,double));
321 p_speed.event = future_evt_set->add_trace(speedTrace, 0.0, this);
324 p_stateEvent = future_evt_set->add_trace(state_trace, 0.0, this);
331 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props,
332 double bw_initial, tmgr_trace_t bw_trace,
333 double lat_initial, tmgr_trace_t lat_trace,
334 e_surf_link_sharing_policy_t policy)
335 : Link(model, name, props, lmm_constraint_new(model->getMaxminSystem(), this, bw_initial))
337 m_bandwidth.peak = bw_initial;
339 m_bandwidth.event = future_evt_set->add_trace(bw_trace, 0.0, this);
341 m_latency.peak = lat_initial;
343 m_latency.event = future_evt_set->add_trace(lat_trace, 0.0, this);
345 if (policy == SURF_LINK_FATPIPE)
346 lmm_constraint_shared(getConstraint());
349 Action *CpuL07::execution_start(double size)
351 sg_host_t*host_list = xbt_new0(sg_host_t, 1);
352 double *flops_amount = xbt_new0(double, 1);
354 host_list[0] = getHost();
355 flops_amount[0] = size;
357 return static_cast<CpuL07Model*>(getModel())->p_hostModel
358 ->executeParallelTask( 1, host_list, flops_amount, NULL, -1);
361 Action *CpuL07::sleep(double duration)
363 L07Action *action = static_cast<L07Action*>(execution_start(1.0));
364 action->m_maxDuration = duration;
365 action->m_suspended = 2;
366 lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
371 bool CpuL07::isUsed(){
372 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
375 /** @brief take into account changes of speed (either load or max) */
376 void CpuL07::onSpeedChange() {
377 lmm_variable_t var = NULL;
378 lmm_element_t elem = NULL;
380 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), p_speed.peak * p_speed.scale);
381 while ((var = lmm_get_var_from_cnst
382 (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
383 Action *action = static_cast<Action*>(lmm_variable_id(var));
385 lmm_update_variable_bound(getModel()->getMaxminSystem(),
386 action->getVariable(),
387 p_speed.scale * p_speed.peak);
390 Cpu::onSpeedChange();
394 bool LinkL07::isUsed(){
395 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
398 void CpuL07::apply_event(tmgr_trace_iterator_t triggered, double value){
399 XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
400 if (triggered == p_speed.event) {
401 p_speed.scale = value;
403 tmgr_trace_event_unref(&p_speed.event);
405 } else if (triggered == p_stateEvent) {
410 tmgr_trace_event_unref(&p_stateEvent);
413 xbt_die("Unknown event!\n");
417 void LinkL07::apply_event(tmgr_trace_iterator_t triggered, double value) {
418 XBT_DEBUG("Updating link %s (%p) with value=%f", getName(), this, value);
419 if (triggered == m_bandwidth.event) {
420 updateBandwidth(value);
421 tmgr_trace_event_unref(&m_bandwidth.event);
423 } else if (triggered == m_latency.event) {
424 updateLatency(value);
425 tmgr_trace_event_unref(&m_latency.event);
427 } else if (triggered == m_stateEvent) {
432 tmgr_trace_event_unref(&m_stateEvent);
435 xbt_die("Unknown event ! \n");
439 void LinkL07::updateBandwidth(double value)
441 m_bandwidth.peak = value;
442 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_bandwidth.peak * m_bandwidth.scale);
445 void LinkL07::updateLatency(double value)
447 lmm_variable_t var = NULL;
449 lmm_element_t elem = NULL;
451 m_latency.peak = value;
452 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
453 action = static_cast<L07Action*>(lmm_variable_id(var));
454 action->updateBound();
462 L07Action::~L07Action(){
463 delete p_netcardList;
464 free(p_communicationAmount);
465 free(p_computationAmount);
468 void L07Action::updateBound()
470 double lat_current = 0.0;
471 double lat_bound = -1.0;
474 int hostNb = p_netcardList->size();
476 if (p_communicationAmount != NULL) {
477 for (i = 0; i < hostNb; i++) {
478 for (j = 0; j < hostNb; j++) {
480 if (p_communicationAmount[i * hostNb + j] > 0) {
482 std::vector<Link*> *route = new std::vector<Link*>();
483 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
485 lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
491 lat_bound = sg_tcp_gamma / (2.0 * lat_current);
492 XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
493 if ((m_latency == 0.0) && (m_suspended == 0)) {
495 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
497 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(),
498 std::min(m_rate, lat_bound));
502 int L07Action::unref()
506 if (action_hook.is_linked())
507 p_stateSet->erase(p_stateSet->iterator_to(*this));
509 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());