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 surf_host_model = new simgrid::surf::HostL07Model();
30 xbt_dynar_push(all_existing_models, &surf_host_model);
37 HostL07Model::HostL07Model() : HostModel() {
38 maxminSystem_ = lmm_system_new(1);
39 surf_network_model = new NetworkL07Model(this,maxminSystem_);
40 surf_cpu_model_pm = new CpuL07Model(this,maxminSystem_);
42 routing_model_create(surf_network_model->createLink("__loopback__", 498000000, 0.000015, SURF_LINK_FATPIPE, nullptr));
45 HostL07Model::~HostL07Model() {
46 delete surf_cpu_model_pm;
47 delete surf_network_model;
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 surf_network_model = nullptr;
70 maxminSystem_ = nullptr; // Avoid multi-free
74 double HostL07Model::next_occuring_event(double /*now*/)
78 ActionList *running_actions = getRunningActionSet();
79 double min = this->shareResourcesMaxMin(running_actions,
83 for(ActionList::iterator it(running_actions->begin()), itend(running_actions->end())
84 ; it != itend ; ++it) {
85 action = static_cast<L07Action*>(&*it);
86 if (action->m_latency > 0) {
88 min = action->m_latency;
89 XBT_DEBUG("Updating min (value) with %p (start %f): %f", action,
90 action->getStartTime(), min);
91 } else if (action->m_latency < min) {
92 min = action->m_latency;
93 XBT_DEBUG("Updating min (latency) with %p (start %f): %f", action,
94 action->getStartTime(), min);
99 XBT_DEBUG("min value : %f", min);
104 void HostL07Model::updateActionsState(double /*now*/, double delta) {
107 ActionList *actionSet = getRunningActionSet();
109 for(ActionList::iterator it = actionSet->begin(), itNext = it
110 ; it != actionSet->end()
113 action = static_cast<L07Action*>(&*it);
114 if (action->m_latency > 0) {
115 if (action->m_latency > delta) {
116 double_update(&(action->m_latency), delta, sg_surf_precision);
118 action->m_latency = 0.0;
120 if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
121 action->updateBound();
122 lmm_update_variable_weight(maxminSystem_, action->getVariable(), 1.0);
125 XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
126 action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
127 action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
129 if (action->getMaxDuration() != NO_MAX_DURATION)
130 action->updateMaxDuration(delta);
132 XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
134 /* In the next if cascade, the action can be finished either because:
135 * - The amount of remaining work reached 0
136 * - The max duration was reached
137 * If it's not done, it may have failed.
140 if ((action->getRemains() <= 0) &&
141 (lmm_get_variable_weight(action->getVariable()) > 0)) {
143 action->setState(Action::State::done);
144 } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
145 (action->getMaxDuration() <= 0)) {
147 action->setState(Action::State::done);
149 /* Need to check that none of the model has failed */
150 lmm_constraint_t cnst = nullptr;
153 while ((cnst = lmm_get_cnst_from_var(maxminSystem_, action->getVariable(), i++))) {
154 void *constraint_id = lmm_constraint_id(cnst);
155 if (static_cast<simgrid::surf::Resource*>(constraint_id)->isOff()) {
156 XBT_DEBUG("Action (%p) Failed!!", action);
158 action->setState(Action::State::failed);
167 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
168 double *flops_amount, double *bytes_amount,
170 return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
174 L07Action::L07Action(Model *model, int host_nb, sg_host_t*host_list,
175 double *flops_amount, double *bytes_amount, double rate)
176 : CpuAction(model, 1, 0)
179 int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
180 double latency = 0.0;
182 this->p_netcardList->reserve(host_nb);
183 for (int i = 0; i<host_nb; i++)
184 this->p_netcardList->push_back(host_list[i]->pimpl_netcard);
186 /* Compute the number of affected resources... */
187 if(bytes_amount != nullptr) {
188 xbt_dict_t ptask_parallel_task_link_set = xbt_dict_new_homogeneous(nullptr);
190 for (int i = 0; i < host_nb; i++) {
191 for (int j = 0; j < host_nb; j++) {
193 if (bytes_amount[i * host_nb + j] > 0) {
195 std::vector<Link*> *route = new std::vector<Link*>();
197 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
198 latency = MAX(latency, lat);
200 for (auto link : *route)
201 xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, nullptr);
207 nb_link = xbt_dict_length(ptask_parallel_task_link_set);
208 xbt_dict_free(&ptask_parallel_task_link_set);
211 for (int i = 0; i < host_nb; i++)
212 if (flops_amount[i] > 0)
215 XBT_DEBUG("Creating a parallel task (%p) with %d hosts and %d unique links.", this, host_nb, nb_link);
216 this->p_computationAmount = flops_amount;
217 this->p_communicationAmount = bytes_amount;
218 this->m_latency = latency;
221 this->variable_ = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
222 (rate > 0 ? rate : -1.0),
225 if (this->m_latency > 0)
226 lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
228 for (int i = 0; i < host_nb; i++)
229 lmm_expand(model->getMaxminSystem(), host_list[i]->pimpl_cpu->getConstraint(),
230 this->getVariable(), flops_amount[i]);
232 if(bytes_amount != nullptr) {
233 for (int i = 0; i < host_nb; i++) {
234 for (int j = 0; j < host_nb; j++) {
236 if (bytes_amount[i * host_nb + j] == 0.0)
238 std::vector<Link*> *route = new std::vector<Link*>();
240 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, nullptr);
242 for (auto link : *route)
243 lmm_expand_add(model->getMaxminSystem(), link->getConstraint(), this->getVariable(), bytes_amount[i * host_nb + j]);
250 if (nb_link + nb_used_host == 0) {
252 this->setRemains(0.0);
257 Action *NetworkL07Model::communicate(NetCard *src, NetCard *dst, double size, double rate)
259 sg_host_t*host_list = xbt_new0(sg_host_t, 2);
260 double *flops_amount = xbt_new0(double, 2);
261 double *bytes_amount = xbt_new0(double, 4);
263 host_list[0] = sg_host_by_name(src->name());
264 host_list[1] = sg_host_by_name(dst->name());
265 bytes_amount[1] = size;
267 return p_hostModel->executeParallelTask(2, host_list, flops_amount, bytes_amount, rate);
270 Cpu *CpuL07Model::createCpu(simgrid::s4u::Host *host, xbt_dynar_t speedPerPstate, int core)
272 return new CpuL07(this, host, speedPerPstate, core);
275 Link* NetworkL07Model::createLink(const char *name, double bandwidth, double latency,
276 e_surf_link_sharing_policy_t policy, xbt_dict_t properties)
278 return new LinkL07(this, name, properties, bandwidth, latency, policy);
285 CpuL07::CpuL07(CpuL07Model *model, simgrid::s4u::Host *host, xbt_dynar_t speedPerPstate, int core)
286 : Cpu(model, host, speedPerPstate, core)
288 constraint_ = lmm_constraint_new(model->getMaxminSystem(), this, xbt_dynar_get_as(speedPerPstate,0,double));
295 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props, double bandwidth, double latency,
296 e_surf_link_sharing_policy_t policy)
297 : Link(model, name, props, lmm_constraint_new(model->getMaxminSystem(), this, bandwidth))
299 m_bandwidth.peak = bandwidth;
300 m_latency.peak = latency;
302 if (policy == SURF_LINK_FATPIPE)
303 lmm_constraint_shared(getConstraint());
305 Link::onCreation(this);
308 Action *CpuL07::execution_start(double size)
310 sg_host_t*host_list = xbt_new0(sg_host_t, 1);
311 double *flops_amount = xbt_new0(double, 1);
313 host_list[0] = getHost();
314 flops_amount[0] = size;
316 return static_cast<CpuL07Model*>(getModel())->p_hostModel
317 ->executeParallelTask( 1, host_list, flops_amount, nullptr, -1);
320 Action *CpuL07::sleep(double duration)
322 L07Action *action = static_cast<L07Action*>(execution_start(1.0));
323 action->maxDuration_ = duration;
324 action->suspended_ = 2;
325 lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
330 bool CpuL07::isUsed(){
331 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
334 /** @brief take into account changes of speed (either load or max) */
335 void CpuL07::onSpeedChange() {
336 lmm_variable_t var = nullptr;
337 lmm_element_t elem = nullptr;
339 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), speed_.peak * speed_.scale);
340 while ((var = lmm_get_var_from_cnst
341 (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
342 Action *action = static_cast<Action*>(lmm_variable_id(var));
344 lmm_update_variable_bound(getModel()->getMaxminSystem(),
345 action->getVariable(),
346 speed_.scale * speed_.peak);
349 Cpu::onSpeedChange();
353 bool LinkL07::isUsed(){
354 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
357 void CpuL07::apply_event(tmgr_trace_iterator_t triggered, double value){
358 XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
359 if (triggered == speed_.event) {
360 speed_.scale = value;
362 tmgr_trace_event_unref(&speed_.event);
364 } else if (triggered == stateEvent_) {
369 tmgr_trace_event_unref(&stateEvent_);
372 xbt_die("Unknown event!\n");
376 void LinkL07::apply_event(tmgr_trace_iterator_t triggered, double value) {
377 XBT_DEBUG("Updating link %s (%p) with value=%f", getName(), this, value);
378 if (triggered == m_bandwidth.event) {
379 updateBandwidth(value);
380 tmgr_trace_event_unref(&m_bandwidth.event);
382 } else if (triggered == m_latency.event) {
383 updateLatency(value);
384 tmgr_trace_event_unref(&m_latency.event);
386 } else if (triggered == m_stateEvent) {
391 tmgr_trace_event_unref(&m_stateEvent);
394 xbt_die("Unknown event ! \n");
398 void LinkL07::updateBandwidth(double value)
400 m_bandwidth.peak = value;
401 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_bandwidth.peak * m_bandwidth.scale);
404 void LinkL07::updateLatency(double value)
406 lmm_variable_t var = nullptr;
408 lmm_element_t elem = nullptr;
410 m_latency.peak = value;
411 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
412 action = static_cast<L07Action*>(lmm_variable_id(var));
413 action->updateBound();
421 L07Action::~L07Action(){
422 delete p_netcardList;
423 free(p_communicationAmount);
424 free(p_computationAmount);
427 void L07Action::updateBound()
429 double lat_current = 0.0;
430 double lat_bound = -1.0;
433 int hostNb = p_netcardList->size();
435 if (p_communicationAmount != nullptr) {
436 for (i = 0; i < hostNb; i++) {
437 for (j = 0; j < hostNb; j++) {
439 if (p_communicationAmount[i * hostNb + j] > 0) {
441 std::vector<Link*> *route = new std::vector<Link*>();
442 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
444 lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
450 lat_bound = sg_tcp_gamma / (2.0 * lat_current);
451 XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
452 if ((m_latency == 0.0) && (suspended_ == 0)) {
454 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
456 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(),
457 std::min(m_rate, lat_bound));
461 int L07Action::unref()
465 if (action_hook.is_linked())
466 stateSet_->erase(stateSet_->iterator_to(*this));
468 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());