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 /**************************************/
23 void surf_host_model_init_ptask_L07(void)
25 XBT_CINFO(xbt_cfg,"Switching to the L07 model to handle parallel tasks.");
26 xbt_assert(!surf_cpu_model_pm, "CPU model type already defined");
27 xbt_assert(!surf_network_model, "network model type already defined");
29 // Define the callbacks to parse the XML
30 simgrid::surf::on_link.connect(netlink_parse_init);
32 surf_host_model = new simgrid::surf::HostL07Model();
33 xbt_dynar_push(all_existing_models, &surf_host_model);
40 HostL07Model::HostL07Model() : HostModel() {
41 maxminSystem_ = lmm_system_new(1);
42 surf_network_model = new NetworkL07Model(this,maxminSystem_);
43 surf_cpu_model_pm = new CpuL07Model(this,maxminSystem_);
45 routing_model_create(surf_network_model->createLink("__loopback__", 498000000, 0.000015, SURF_LINK_FATPIPE, NULL));
48 HostL07Model::~HostL07Model() {
49 delete surf_cpu_model_pm;
50 delete surf_network_model;
53 CpuL07Model::CpuL07Model(HostL07Model *hmodel,lmm_system_t sys)
59 CpuL07Model::~CpuL07Model() {
60 surf_cpu_model_pm = NULL;
61 lmm_system_free(maxminSystem_);
64 NetworkL07Model::NetworkL07Model(HostL07Model *hmodel, lmm_system_t sys)
70 NetworkL07Model::~NetworkL07Model()
72 surf_network_model = NULL;
73 maxminSystem_ = NULL; // Avoid multi-free
77 double HostL07Model::next_occuring_event(double /*now*/)
81 ActionList *running_actions = getRunningActionSet();
82 double min = this->shareResourcesMaxMin(running_actions,
86 for(ActionList::iterator it(running_actions->begin()), itend(running_actions->end())
87 ; it != itend ; ++it) {
88 action = static_cast<L07Action*>(&*it);
89 if (action->m_latency > 0) {
91 min = action->m_latency;
92 XBT_DEBUG("Updating min (value) with %p (start %f): %f", action,
93 action->getStartTime(), min);
94 } else if (action->m_latency < min) {
95 min = action->m_latency;
96 XBT_DEBUG("Updating min (latency) with %p (start %f): %f", action,
97 action->getStartTime(), min);
102 XBT_DEBUG("min value : %f", min);
107 void HostL07Model::updateActionsState(double /*now*/, double delta) {
110 ActionList *actionSet = getRunningActionSet();
112 for(ActionList::iterator it = actionSet->begin(), itNext = it
113 ; it != actionSet->end()
116 action = static_cast<L07Action*>(&*it);
117 if (action->m_latency > 0) {
118 if (action->m_latency > delta) {
119 double_update(&(action->m_latency), delta, sg_surf_precision);
121 action->m_latency = 0.0;
123 if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
124 action->updateBound();
125 lmm_update_variable_weight(maxminSystem_, action->getVariable(), 1.0);
128 XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
129 action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
130 action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
132 if (action->getMaxDuration() != NO_MAX_DURATION)
133 action->updateMaxDuration(delta);
135 XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
137 /* In the next if cascade, the action can be finished either because:
138 * - The amount of remaining work reached 0
139 * - The max duration was reached
140 * If it's not done, it may have failed.
143 if ((action->getRemains() <= 0) &&
144 (lmm_get_variable_weight(action->getVariable()) > 0)) {
146 action->setState(Action::State::done);
147 } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
148 (action->getMaxDuration() <= 0)) {
150 action->setState(Action::State::done);
152 /* Need to check that none of the model has failed */
153 lmm_constraint_t cnst = NULL;
156 while ((cnst = lmm_get_cnst_from_var(maxminSystem_, action->getVariable(), i++))) {
157 void *constraint_id = lmm_constraint_id(cnst);
159 if (static_cast<HostImpl*>(constraint_id)->isOff()) {
160 XBT_DEBUG("Action (%p) Failed!!", action);
162 action->setState(Action::State::failed);
171 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
172 double *flops_amount, double *bytes_amount,
174 return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
178 L07Action::L07Action(Model *model, int host_nb, sg_host_t*host_list,
179 double *flops_amount, double *bytes_amount, double rate)
180 : CpuAction(model, 1, 0)
183 int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
184 double latency = 0.0;
186 this->p_netcardList->reserve(host_nb);
187 for (int i = 0; i<host_nb; i++)
188 this->p_netcardList->push_back(host_list[i]->pimpl_netcard);
190 /* Compute the number of affected resources... */
191 if(bytes_amount != NULL) {
192 xbt_dict_t ptask_parallel_task_link_set = xbt_dict_new_homogeneous(NULL);
194 for (int i = 0; i < host_nb; i++) {
195 for (int j = 0; j < host_nb; j++) {
197 if (bytes_amount[i * host_nb + j] > 0) {
199 std::vector<Link*> *route = new std::vector<Link*>();
201 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
202 latency = MAX(latency, lat);
204 for (auto link : *route)
205 xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, NULL);
211 nb_link = xbt_dict_length(ptask_parallel_task_link_set);
212 xbt_dict_free(&ptask_parallel_task_link_set);
215 for (int i = 0; i < host_nb; i++)
216 if (flops_amount[i] > 0)
219 XBT_DEBUG("Creating a parallel task (%p) with %d hosts and %d unique links.", this, host_nb, nb_link);
220 this->p_computationAmount = flops_amount;
221 this->p_communicationAmount = bytes_amount;
222 this->m_latency = latency;
225 this->variable_ = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
226 (rate > 0 ? rate : -1.0),
229 if (this->m_latency > 0)
230 lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
232 for (int i = 0; i < host_nb; i++)
233 lmm_expand(model->getMaxminSystem(), host_list[i]->pimpl_cpu->getConstraint(),
234 this->getVariable(), flops_amount[i]);
236 if(bytes_amount != NULL) {
237 for (int i = 0; i < host_nb; i++) {
238 for (int j = 0; j < host_nb; j++) {
240 if (bytes_amount[i * host_nb + j] == 0.0)
242 std::vector<Link*> *route = new std::vector<Link*>();
244 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, NULL);
246 for (auto link : *route)
247 lmm_expand_add(model->getMaxminSystem(), link->getConstraint(), this->getVariable(), bytes_amount[i * host_nb + j]);
254 if (nb_link + nb_used_host == 0) {
256 this->setRemains(0.0);
261 Action *NetworkL07Model::communicate(NetCard *src, NetCard *dst, double size, double rate)
263 sg_host_t*host_list = xbt_new0(sg_host_t, 2);
264 double *flops_amount = xbt_new0(double, 2);
265 double *bytes_amount = xbt_new0(double, 4);
267 host_list[0] = sg_host_by_name(src->name());
268 host_list[1] = sg_host_by_name(dst->name());
269 bytes_amount[1] = size;
271 return p_hostModel->executeParallelTask(2, host_list, flops_amount, bytes_amount, rate);
274 Cpu *CpuL07Model::createCpu(simgrid::s4u::Host *host, xbt_dynar_t speedPerPstate, int core)
276 return new CpuL07(this, host, speedPerPstate, core);
279 Link* NetworkL07Model::createLink(const char *name, double bandwidth, double latency,
280 e_surf_link_sharing_policy_t policy, xbt_dict_t properties)
282 return new LinkL07(this, name, properties, bandwidth, latency, policy);
289 CpuL07::CpuL07(CpuL07Model *model, simgrid::s4u::Host *host, xbt_dynar_t speedPerPstate, int core)
290 : Cpu(model, host, speedPerPstate, core)
292 constraint_ = lmm_constraint_new(model->getMaxminSystem(), this, xbt_dynar_get_as(speedPerPstate,0,double));
299 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props, double bandwidth, double latency,
300 e_surf_link_sharing_policy_t policy)
301 : Link(model, name, props, lmm_constraint_new(model->getMaxminSystem(), this, bandwidth))
303 m_bandwidth.peak = bandwidth;
304 m_latency.peak = latency;
306 if (policy == SURF_LINK_FATPIPE)
307 lmm_constraint_shared(getConstraint());
309 Link::onCreation(this);
312 Action *CpuL07::execution_start(double size)
314 sg_host_t*host_list = xbt_new0(sg_host_t, 1);
315 double *flops_amount = xbt_new0(double, 1);
317 host_list[0] = getHost();
318 flops_amount[0] = size;
320 return static_cast<CpuL07Model*>(getModel())->p_hostModel
321 ->executeParallelTask( 1, host_list, flops_amount, NULL, -1);
324 Action *CpuL07::sleep(double duration)
326 L07Action *action = static_cast<L07Action*>(execution_start(1.0));
327 action->maxDuration_ = duration;
328 action->suspended_ = 2;
329 lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
334 bool CpuL07::isUsed(){
335 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
338 /** @brief take into account changes of speed (either load or max) */
339 void CpuL07::onSpeedChange() {
340 lmm_variable_t var = NULL;
341 lmm_element_t elem = NULL;
343 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), speed_.peak * speed_.scale);
344 while ((var = lmm_get_var_from_cnst
345 (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
346 Action *action = static_cast<Action*>(lmm_variable_id(var));
348 lmm_update_variable_bound(getModel()->getMaxminSystem(),
349 action->getVariable(),
350 speed_.scale * speed_.peak);
353 Cpu::onSpeedChange();
357 bool LinkL07::isUsed(){
358 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
361 void CpuL07::apply_event(tmgr_trace_iterator_t triggered, double value){
362 XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
363 if (triggered == speed_.event) {
364 speed_.scale = value;
366 tmgr_trace_event_unref(&speed_.event);
368 } else if (triggered == stateEvent_) {
373 tmgr_trace_event_unref(&stateEvent_);
376 xbt_die("Unknown event!\n");
380 void LinkL07::apply_event(tmgr_trace_iterator_t triggered, double value) {
381 XBT_DEBUG("Updating link %s (%p) with value=%f", getName(), this, value);
382 if (triggered == m_bandwidth.event) {
383 updateBandwidth(value);
384 tmgr_trace_event_unref(&m_bandwidth.event);
386 } else if (triggered == m_latency.event) {
387 updateLatency(value);
388 tmgr_trace_event_unref(&m_latency.event);
390 } else if (triggered == m_stateEvent) {
395 tmgr_trace_event_unref(&m_stateEvent);
398 xbt_die("Unknown event ! \n");
402 void LinkL07::updateBandwidth(double value)
404 m_bandwidth.peak = value;
405 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_bandwidth.peak * m_bandwidth.scale);
408 void LinkL07::updateLatency(double value)
410 lmm_variable_t var = NULL;
412 lmm_element_t elem = NULL;
414 m_latency.peak = value;
415 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
416 action = static_cast<L07Action*>(lmm_variable_id(var));
417 action->updateBound();
425 L07Action::~L07Action(){
426 delete p_netcardList;
427 free(p_communicationAmount);
428 free(p_computationAmount);
431 void L07Action::updateBound()
433 double lat_current = 0.0;
434 double lat_bound = -1.0;
437 int hostNb = p_netcardList->size();
439 if (p_communicationAmount != NULL) {
440 for (i = 0; i < hostNb; i++) {
441 for (j = 0; j < hostNb; j++) {
443 if (p_communicationAmount[i * hostNb + j] > 0) {
445 std::vector<Link*> *route = new std::vector<Link*>();
446 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
448 lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
454 lat_bound = sg_tcp_gamma / (2.0 * lat_current);
455 XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
456 if ((m_latency == 0.0) && (suspended_ == 0)) {
458 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
460 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(),
461 std::min(m_rate, lat_bound));
465 int L07Action::unref()
469 if (action_hook.is_linked())
470 stateSet_->erase(stateSet_->iterator_to(*this));
472 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());