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(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, maxminSystem_, bottleneck_solve);
81 for(ActionList::iterator it(running_actions->begin()), itend(running_actions->end()); it != itend ; ++it) {
82 action = static_cast<L07Action*>(&*it);
83 if (action->m_latency > 0) {
85 min = action->m_latency;
86 XBT_DEBUG("Updating min (value) with %p (start %f): %f", action, action->getStartTime(), min);
87 } else if (action->m_latency < min) {
88 min = action->m_latency;
89 XBT_DEBUG("Updating min (latency) with %p (start %f): %f", action, action->getStartTime(), min);
94 XBT_DEBUG("min value : %f", min);
99 void HostL07Model::updateActionsState(double /*now*/, double delta) {
102 ActionList *actionSet = getRunningActionSet();
104 for(ActionList::iterator it = actionSet->begin(), itNext = it
105 ; it != actionSet->end()
108 action = static_cast<L07Action*>(&*it);
109 if (action->m_latency > 0) {
110 if (action->m_latency > delta) {
111 double_update(&(action->m_latency), delta, sg_surf_precision);
113 action->m_latency = 0.0;
115 if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
116 action->updateBound();
117 lmm_update_variable_weight(maxminSystem_, action->getVariable(), 1.0);
120 XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
121 action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
122 action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
124 if (action->getMaxDuration() != NO_MAX_DURATION)
125 action->updateMaxDuration(delta);
127 XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
129 /* In the next if cascade, the action can be finished either because:
130 * - The amount of remaining work reached 0
131 * - The max duration was reached
132 * If it's not done, it may have failed.
135 if ((action->getRemains() <= 0) &&
136 (lmm_get_variable_weight(action->getVariable()) > 0)) {
138 action->setState(Action::State::done);
139 } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
140 (action->getMaxDuration() <= 0)) {
142 action->setState(Action::State::done);
144 /* Need to check that none of the model has failed */
145 lmm_constraint_t cnst = nullptr;
148 while ((cnst = lmm_get_cnst_from_var(maxminSystem_, action->getVariable(), i++))) {
149 void *constraint_id = lmm_constraint_id(cnst);
150 if (static_cast<simgrid::surf::Resource*>(constraint_id)->isOff()) {
151 XBT_DEBUG("Action (%p) Failed!!", action);
153 action->setState(Action::State::failed);
162 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
163 double *flops_amount, double *bytes_amount,double rate) {
164 return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
168 L07Action::L07Action(Model *model, int host_nb, sg_host_t *host_list,
169 double *flops_amount, double *bytes_amount, double rate)
170 : CpuAction(model, 1, 0)
173 int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
174 double latency = 0.0;
176 this->p_netcardList->reserve(host_nb);
177 for (int i = 0; i<host_nb; i++)
178 this->p_netcardList->push_back(host_list[i]->pimpl_netcard);
180 /* Compute the number of affected resources... */
181 if(bytes_amount != nullptr) {
182 xbt_dict_t ptask_parallel_task_link_set = xbt_dict_new_homogeneous(nullptr);
184 for (int i = 0; i < host_nb; i++) {
185 for (int j = 0; j < host_nb; j++) {
187 if (bytes_amount[i * host_nb + j] > 0) {
189 std::vector<Link*> *route = new std::vector<Link*>();
191 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
192 latency = MAX(latency, lat);
194 for (auto link : *route)
195 xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, nullptr);
201 nb_link = xbt_dict_length(ptask_parallel_task_link_set);
202 xbt_dict_free(&ptask_parallel_task_link_set);
205 for (int i = 0; i < host_nb; i++)
206 if (flops_amount[i] > 0)
209 XBT_DEBUG("Creating a parallel task (%p) with %d hosts and %d unique links.", this, host_nb, nb_link);
210 this->p_computationAmount = flops_amount;
211 this->p_communicationAmount = bytes_amount;
212 this->m_latency = latency;
215 this->variable_ = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
216 (rate > 0 ? rate : -1.0),
219 if (this->m_latency > 0)
220 lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
222 for (int i = 0; i < host_nb; i++)
223 lmm_expand(model->getMaxminSystem(), host_list[i]->pimpl_cpu->getConstraint(),
224 this->getVariable(), flops_amount[i]);
226 if(bytes_amount != nullptr) {
227 for (int i = 0; i < host_nb; i++) {
228 for (int j = 0; j < host_nb; j++) {
230 if (bytes_amount[i * host_nb + j] == 0.0)
232 std::vector<Link*> *route = new std::vector<Link*>();
234 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, nullptr);
236 for (auto link : *route)
237 lmm_expand_add(model->getMaxminSystem(), link->getConstraint(), this->getVariable(), bytes_amount[i * host_nb + j]);
244 if (nb_link + nb_used_host == 0) {
246 this->setRemains(0.0);
251 Action *NetworkL07Model::communicate(kernel::routing::NetCard *src, kernel::routing::NetCard *dst, double size, double rate)
253 sg_host_t*host_list = xbt_new0(sg_host_t, 2);
254 double *flops_amount = xbt_new0(double, 2);
255 double *bytes_amount = xbt_new0(double, 4);
257 host_list[0] = sg_host_by_name(src->name());
258 host_list[1] = sg_host_by_name(dst->name());
259 bytes_amount[1] = size;
261 return p_hostModel->executeParallelTask(2, host_list, flops_amount, bytes_amount, rate);
264 Cpu *CpuL07Model::createCpu(simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
266 return new CpuL07(this, host, speedPerPstate, core);
269 Link* NetworkL07Model::createLink(const char *name, double bandwidth, double latency,
270 e_surf_link_sharing_policy_t policy, xbt_dict_t properties)
272 return new LinkL07(this, name, properties, bandwidth, latency, policy);
279 CpuL07::CpuL07(CpuL07Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
280 : Cpu(model, host, speedPerPstate, core)
282 constraint_ = lmm_constraint_new(model->getMaxminSystem(), this, speedPerPstate->front());
285 CpuL07::~CpuL07()=default;
287 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props, double bandwidth, double latency,
288 e_surf_link_sharing_policy_t policy)
289 : Link(model, name, props, lmm_constraint_new(model->getMaxminSystem(), this, bandwidth))
291 m_bandwidth.peak = bandwidth;
292 m_latency.peak = latency;
294 if (policy == SURF_LINK_FATPIPE)
295 lmm_constraint_shared(getConstraint());
297 Link::onCreation(this);
300 Action *CpuL07::execution_start(double size)
302 sg_host_t*host_list = xbt_new0(sg_host_t, 1);
303 double *flops_amount = xbt_new0(double, 1);
305 host_list[0] = getHost();
306 flops_amount[0] = size;
308 return static_cast<CpuL07Model*>(getModel())->p_hostModel->executeParallelTask(1, host_list, flops_amount, nullptr, -1);
311 Action *CpuL07::sleep(double duration)
313 L07Action *action = static_cast<L07Action*>(execution_start(1.0));
314 action->maxDuration_ = duration;
315 action->suspended_ = 2;
316 lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
321 bool CpuL07::isUsed(){
322 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
325 /** @brief take into account changes of speed (either load or max) */
326 void CpuL07::onSpeedChange() {
327 lmm_variable_t var = nullptr;
328 lmm_element_t elem = nullptr;
330 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), speed_.peak * speed_.scale);
331 while ((var = lmm_get_var_from_cnst (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
332 Action *action = static_cast<Action*>(lmm_variable_id(var));
334 lmm_update_variable_bound(getModel()->getMaxminSystem(), action->getVariable(), speed_.scale * speed_.peak);
337 Cpu::onSpeedChange();
341 bool LinkL07::isUsed(){
342 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
345 void CpuL07::apply_event(tmgr_trace_iterator_t triggered, double value){
346 XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
347 if (triggered == speed_.event) {
348 speed_.scale = value;
350 tmgr_trace_event_unref(&speed_.event);
352 } else if (triggered == stateEvent_) {
357 tmgr_trace_event_unref(&stateEvent_);
360 xbt_die("Unknown event!\n");
364 void LinkL07::apply_event(tmgr_trace_iterator_t triggered, double value) {
365 XBT_DEBUG("Updating link %s (%p) with value=%f", getName(), this, value);
366 if (triggered == m_bandwidth.event) {
367 updateBandwidth(value);
368 tmgr_trace_event_unref(&m_bandwidth.event);
370 } else if (triggered == m_latency.event) {
371 updateLatency(value);
372 tmgr_trace_event_unref(&m_latency.event);
374 } else if (triggered == m_stateEvent) {
379 tmgr_trace_event_unref(&m_stateEvent);
382 xbt_die("Unknown event ! \n");
386 void LinkL07::updateBandwidth(double value)
388 m_bandwidth.peak = value;
389 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_bandwidth.peak * m_bandwidth.scale);
392 void LinkL07::updateLatency(double value)
394 lmm_variable_t var = nullptr;
396 lmm_element_t elem = nullptr;
398 m_latency.peak = value;
399 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
400 action = static_cast<L07Action*>(lmm_variable_id(var));
401 action->updateBound();
409 L07Action::~L07Action(){
410 delete p_netcardList;
411 free(p_communicationAmount);
412 free(p_computationAmount);
415 void L07Action::updateBound()
417 double lat_current = 0.0;
418 double lat_bound = -1.0;
421 int hostNb = p_netcardList->size();
423 if (p_communicationAmount != nullptr) {
424 for (i = 0; i < hostNb; i++) {
425 for (j = 0; j < hostNb; j++) {
427 if (p_communicationAmount[i * hostNb + j] > 0) {
429 std::vector<Link*> *route = new std::vector<Link*>();
430 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
432 lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
438 lat_bound = sg_tcp_gamma / (2.0 * lat_current);
439 XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
440 if ((m_latency == 0.0) && (suspended_ == 0)) {
442 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
444 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), std::min(m_rate, lat_bound));
448 int L07Action::unref()
452 if (action_hook.is_linked())
453 stateSet_->erase(stateSet_->iterator_to(*this));
455 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());