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()
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 surf_host_model = new simgrid::surf::HostL07Model();
30 all_existing_models->push_back(surf_host_model);
37 HostL07Model::HostL07Model() : HostModel() {
38 maxminSystem_ = lmm_system_new(true /* lazy */);
39 maxminSystem_->solve_fun = &bottleneck_solve;
40 surf_network_model = new NetworkL07Model(this,maxminSystem_);
41 surf_cpu_model_pm = new CpuL07Model(this,maxminSystem_);
43 routing_model_create(surf_network_model->createLink("__loopback__", 498000000, 0.000015, SURF_LINK_FATPIPE, nullptr));
46 HostL07Model::~HostL07Model() {
47 delete surf_cpu_model_pm;
50 CpuL07Model::CpuL07Model(HostL07Model *hmodel,lmm_system_t sys)
56 CpuL07Model::~CpuL07Model() {
57 surf_cpu_model_pm = nullptr;
58 lmm_system_free(maxminSystem_);
59 maxminSystem_ = nullptr;
61 NetworkL07Model::NetworkL07Model(HostL07Model *hmodel, lmm_system_t sys)
67 NetworkL07Model::~NetworkL07Model()
69 maxminSystem_ = nullptr; // Avoid multi-free
73 double HostL07Model::nextOccuringEvent(double now)
75 double min = HostModel::nextOccuringEventFull(now);
76 for (auto it(getRunningActionSet()->begin()), itend(getRunningActionSet()->end()); it != itend ; ++it) {
77 L07Action *action = static_cast<L07Action*>(&*it);
78 if (action->latency_ > 0 && (min < 0 || action->latency_ < min)) {
79 min = action->latency_;
80 XBT_DEBUG("Updating min with %p (start %f): %f", action, action->getStartTime(), min);
83 XBT_DEBUG("min value: %f", min);
88 void HostL07Model::updateActionsState(double /*now*/, double delta) {
91 ActionList *actionSet = getRunningActionSet();
93 for(ActionList::iterator it = actionSet->begin(), itNext = it
94 ; it != actionSet->end()
97 action = static_cast<L07Action*>(&*it);
98 if (action->latency_ > 0) {
99 if (action->latency_ > delta) {
100 double_update(&(action->latency_), delta, sg_surf_precision);
102 action->latency_ = 0.0;
104 if ((action->latency_ == 0.0) && (action->isSuspended() == 0)) {
105 action->updateBound();
106 lmm_update_variable_weight(maxminSystem_, action->getVariable(), 1.0);
109 XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
110 action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
111 action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
113 if (action->getMaxDuration() != NO_MAX_DURATION)
114 action->updateMaxDuration(delta);
116 XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
118 /* In the next if cascade, the action can be finished either because:
119 * - The amount of remaining work reached 0
120 * - The max duration was reached
121 * If it's not done, it may have failed.
124 if ((action->getRemains() <= 0) &&
125 (lmm_get_variable_weight(action->getVariable()) > 0)) {
127 action->setState(Action::State::done);
128 } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
129 (action->getMaxDuration() <= 0)) {
131 action->setState(Action::State::done);
133 /* Need to check that none of the model has failed */
134 lmm_constraint_t cnst = nullptr;
137 while ((cnst = lmm_get_cnst_from_var(maxminSystem_, action->getVariable(), i++))) {
138 void *constraint_id = lmm_constraint_id(cnst);
139 if (static_cast<simgrid::surf::Resource*>(constraint_id)->isOff()) {
140 XBT_DEBUG("Action (%p) Failed!!", action);
142 action->setState(Action::State::failed);
151 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
152 double *flops_amount, double *bytes_amount,double rate) {
153 return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
157 L07Action::L07Action(Model *model, int host_nb, sg_host_t *host_list,
158 double *flops_amount, double *bytes_amount, double rate)
159 : CpuAction(model, 1, 0)
162 int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
163 double latency = 0.0;
165 this->netcardList_->reserve(host_nb);
166 for (int i = 0; i<host_nb; i++)
167 this->netcardList_->push_back(host_list[i]->pimpl_netcard);
169 /* Compute the number of affected resources... */
170 if(bytes_amount != nullptr) {
171 xbt_dict_t ptask_parallel_task_link_set = xbt_dict_new_homogeneous(nullptr);
173 for (int i = 0; i < host_nb; i++) {
174 for (int j = 0; j < host_nb; j++) {
176 if (bytes_amount[i * host_nb + j] > 0) {
178 std::vector<Link*> *route = new std::vector<Link*>();
180 routing_platf->getRouteAndLatency((*netcardList_)[i], (*netcardList_)[j], route, &lat);
181 latency = MAX(latency, lat);
183 for (auto link : *route)
184 xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, nullptr);
190 nb_link = xbt_dict_length(ptask_parallel_task_link_set);
191 xbt_dict_free(&ptask_parallel_task_link_set);
194 for (int i = 0; i < host_nb; i++)
195 if (flops_amount[i] > 0)
198 XBT_DEBUG("Creating a parallel task (%p) with %d hosts and %d unique links.", this, host_nb, nb_link);
199 this->computationAmount_ = flops_amount;
200 this->communicationAmount_ = bytes_amount;
201 this->latency_ = latency;
204 this->variable_ = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
205 (rate > 0 ? rate : -1.0),
208 if (this->latency_ > 0)
209 lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
211 for (int i = 0; i < host_nb; i++)
212 lmm_expand(model->getMaxminSystem(), host_list[i]->pimpl_cpu->getConstraint(),
213 this->getVariable(), flops_amount[i]);
215 if(bytes_amount != nullptr) {
216 for (int i = 0; i < host_nb; i++) {
217 for (int j = 0; j < host_nb; j++) {
219 if (bytes_amount[i * host_nb + j] == 0.0)
221 std::vector<Link*> *route = new std::vector<Link*>();
223 routing_platf->getRouteAndLatency((*netcardList_)[i], (*netcardList_)[j], route, nullptr);
225 for (auto link : *route)
226 lmm_expand_add(model->getMaxminSystem(), link->getConstraint(), this->getVariable(), bytes_amount[i * host_nb + j]);
233 if (nb_link + nb_used_host == 0) {
235 this->setRemains(0.0);
240 Action* NetworkL07Model::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate)
242 sg_host_t*host_list = xbt_new0(sg_host_t, 2);
243 double *flops_amount = xbt_new0(double, 2);
244 double *bytes_amount = xbt_new0(double, 4);
248 bytes_amount[1] = size;
250 return hostModel_->executeParallelTask(2, host_list, flops_amount, bytes_amount, rate);
253 Cpu *CpuL07Model::createCpu(simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
255 return new CpuL07(this, host, speedPerPstate, core);
258 Link* NetworkL07Model::createLink(const char *name, double bandwidth, double latency,
259 e_surf_link_sharing_policy_t policy, xbt_dict_t properties)
261 return new LinkL07(this, name, properties, bandwidth, latency, policy);
268 CpuL07::CpuL07(CpuL07Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
269 : Cpu(model, host, speedPerPstate, core)
271 constraint_ = lmm_constraint_new(model->getMaxminSystem(), this, speedPerPstate->front());
274 CpuL07::~CpuL07()=default;
276 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props, double bandwidth, double latency,
277 e_surf_link_sharing_policy_t policy)
278 : Link(model, name, props, lmm_constraint_new(model->getMaxminSystem(), this, bandwidth))
280 bandwidth_.peak = bandwidth;
281 latency_.peak = latency;
283 if (policy == SURF_LINK_FATPIPE)
284 lmm_constraint_shared(getConstraint());
286 Link::onCreation(this);
289 Action *CpuL07::execution_start(double size)
291 sg_host_t*host_list = xbt_new0(sg_host_t, 1);
292 double *flops_amount = xbt_new0(double, 1);
294 host_list[0] = getHost();
295 flops_amount[0] = size;
297 return static_cast<CpuL07Model*>(getModel())->hostModel_->executeParallelTask(1, host_list, flops_amount, nullptr, -1);
300 Action *CpuL07::sleep(double duration)
302 L07Action *action = static_cast<L07Action*>(execution_start(1.0));
303 action->maxDuration_ = duration;
304 action->suspended_ = 2;
305 lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
310 bool CpuL07::isUsed(){
311 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
314 /** @brief take into account changes of speed (either load or max) */
315 void CpuL07::onSpeedChange() {
316 lmm_variable_t var = nullptr;
317 lmm_element_t elem = nullptr;
319 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), speed_.peak * speed_.scale);
320 while ((var = lmm_get_var_from_cnst (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
321 Action *action = static_cast<Action*>(lmm_variable_id(var));
323 lmm_update_variable_bound(getModel()->getMaxminSystem(), action->getVariable(), speed_.scale * speed_.peak);
326 Cpu::onSpeedChange();
330 bool LinkL07::isUsed(){
331 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
334 void CpuL07::apply_event(tmgr_trace_iterator_t triggered, double value){
335 XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
336 if (triggered == speed_.event) {
337 speed_.scale = value;
339 tmgr_trace_event_unref(&speed_.event);
341 } else if (triggered == stateEvent_) {
346 tmgr_trace_event_unref(&stateEvent_);
349 xbt_die("Unknown event!\n");
353 void LinkL07::apply_event(tmgr_trace_iterator_t triggered, double value) {
354 XBT_DEBUG("Updating link %s (%p) with value=%f", getName(), this, value);
355 if (triggered == bandwidth_.event) {
357 tmgr_trace_event_unref(&bandwidth_.event);
359 } else if (triggered == latency_.event) {
361 tmgr_trace_event_unref(&latency_.event);
363 } else if (triggered == stateEvent_) {
368 tmgr_trace_event_unref(&stateEvent_);
371 xbt_die("Unknown event ! \n");
375 void LinkL07::setBandwidth(double value)
377 bandwidth_.peak = value;
378 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), bandwidth_.peak * bandwidth_.scale);
381 void LinkL07::setLatency(double value)
383 lmm_variable_t var = nullptr;
385 lmm_element_t elem = nullptr;
387 latency_.peak = value;
388 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
389 action = static_cast<L07Action*>(lmm_variable_id(var));
390 action->updateBound();
398 L07Action::~L07Action(){
400 free(communicationAmount_);
401 free(computationAmount_);
404 void L07Action::updateBound()
406 double lat_current = 0.0;
407 double lat_bound = -1.0;
410 int hostNb = netcardList_->size();
412 if (communicationAmount_ != nullptr) {
413 for (i = 0; i < hostNb; i++) {
414 for (j = 0; j < hostNb; j++) {
416 if (communicationAmount_[i * hostNb + j] > 0) {
418 std::vector<Link*> *route = new std::vector<Link*>();
419 routing_platf->getRouteAndLatency((*netcardList_)[i], (*netcardList_)[j], route, &lat);
421 lat_current = MAX(lat_current, lat * communicationAmount_[i * hostNb + j]);
427 lat_bound = sg_tcp_gamma / (2.0 * lat_current);
428 XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
429 if ((latency_ == 0.0) && (suspended_ == 0)) {
431 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
433 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), std::min(rate_, lat_bound));
437 int L07Action::unref()
441 if (action_hook.is_linked())
442 stateSet_->erase(stateSet_->iterator_to(*this));
444 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());