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 maxminSystem_ = lmm_system_new(1);
49 surf_network_model = new NetworkL07Model(this,maxminSystem_);
50 surf_cpu_model_pm = new CpuL07Model(this,maxminSystem_);
52 routing_model_create(surf_network_model->createLink("__loopback__", 498000000, 0.000015, SURF_LINK_FATPIPE, NULL));
55 HostL07Model::~HostL07Model() {
56 delete surf_cpu_model_pm;
57 delete surf_network_model;
60 CpuL07Model::CpuL07Model(HostL07Model *hmodel,lmm_system_t sys)
66 CpuL07Model::~CpuL07Model() {
67 surf_cpu_model_pm = NULL;
68 lmm_system_free(maxminSystem_);
71 NetworkL07Model::NetworkL07Model(HostL07Model *hmodel, lmm_system_t sys)
77 NetworkL07Model::~NetworkL07Model()
79 surf_network_model = NULL;
80 maxminSystem_ = NULL; // Avoid multi-free
84 double HostL07Model::next_occuring_event(double /*now*/)
88 ActionList *running_actions = getRunningActionSet();
89 double min = this->shareResourcesMaxMin(running_actions,
93 for(ActionList::iterator it(running_actions->begin()), itend(running_actions->end())
94 ; it != itend ; ++it) {
95 action = static_cast<L07Action*>(&*it);
96 if (action->m_latency > 0) {
98 min = action->m_latency;
99 XBT_DEBUG("Updating min (value) with %p (start %f): %f", action,
100 action->getStartTime(), min);
101 } else if (action->m_latency < min) {
102 min = action->m_latency;
103 XBT_DEBUG("Updating min (latency) with %p (start %f): %f", action,
104 action->getStartTime(), min);
109 XBT_DEBUG("min value : %f", min);
114 void HostL07Model::updateActionsState(double /*now*/, double delta) {
117 ActionList *actionSet = getRunningActionSet();
119 for(ActionList::iterator it = actionSet->begin(), itNext = it
120 ; it != actionSet->end()
123 action = static_cast<L07Action*>(&*it);
124 if (action->m_latency > 0) {
125 if (action->m_latency > delta) {
126 double_update(&(action->m_latency), delta, sg_surf_precision);
128 action->m_latency = 0.0;
130 if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
131 action->updateBound();
132 lmm_update_variable_weight(maxminSystem_, action->getVariable(), 1.0);
135 XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
136 action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
137 action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
139 if (action->getMaxDuration() != NO_MAX_DURATION)
140 action->updateMaxDuration(delta);
142 XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
144 /* In the next if cascade, the action can be finished either because:
145 * - The amount of remaining work reached 0
146 * - The max duration was reached
147 * If it's not done, it may have failed.
150 if ((action->getRemains() <= 0) &&
151 (lmm_get_variable_weight(action->getVariable()) > 0)) {
153 action->setState(SURF_ACTION_DONE);
154 } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
155 (action->getMaxDuration() <= 0)) {
157 action->setState(SURF_ACTION_DONE);
159 /* Need to check that none of the model has failed */
160 lmm_constraint_t cnst = NULL;
163 while ((cnst = lmm_get_cnst_from_var(maxminSystem_, action->getVariable(), i++))) {
164 void *constraint_id = lmm_constraint_id(cnst);
166 if (static_cast<HostImpl*>(constraint_id)->isOff()) {
167 XBT_DEBUG("Action (%p) Failed!!", action);
169 action->setState(SURF_ACTION_FAILED);
178 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
179 double *flops_amount, double *bytes_amount,
181 return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
185 L07Action::L07Action(Model *model, int host_nb, sg_host_t*host_list,
186 double *flops_amount, double *bytes_amount, double rate)
187 : CpuAction(model, 1, 0)
190 int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
191 double latency = 0.0;
193 this->p_netcardList->reserve(host_nb);
194 for (int i = 0; i<host_nb; i++)
195 this->p_netcardList->push_back(host_list[i]->pimpl_netcard);
197 /* Compute the number of affected resources... */
198 if(bytes_amount != NULL) {
199 xbt_dict_t ptask_parallel_task_link_set = xbt_dict_new_homogeneous(NULL);
201 for (int i = 0; i < host_nb; i++) {
202 for (int j = 0; j < host_nb; j++) {
204 if (bytes_amount[i * host_nb + j] > 0) {
206 std::vector<Link*> *route = new std::vector<Link*>();
208 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
209 latency = MAX(latency, lat);
211 for (auto link : *route)
212 xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, NULL);
218 nb_link = xbt_dict_length(ptask_parallel_task_link_set);
219 xbt_dict_free(&ptask_parallel_task_link_set);
222 for (int i = 0; i < host_nb; i++)
223 if (flops_amount[i] > 0)
226 XBT_DEBUG("Creating a parallel task (%p) with %d hosts and %d unique links.", this, host_nb, nb_link);
227 this->p_computationAmount = flops_amount;
228 this->p_communicationAmount = bytes_amount;
229 this->m_latency = latency;
232 this->p_variable = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
233 (rate > 0 ? rate : -1.0),
236 if (this->m_latency > 0)
237 lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
239 for (int i = 0; i < host_nb; i++)
240 lmm_expand(model->getMaxminSystem(), host_list[i]->pimpl_cpu->getConstraint(),
241 this->getVariable(), flops_amount[i]);
243 if(bytes_amount != NULL) {
244 for (int i = 0; i < host_nb; i++) {
245 for (int j = 0; j < host_nb; j++) {
247 if (bytes_amount[i * host_nb + j] == 0.0)
249 std::vector<Link*> *route = new std::vector<Link*>();
251 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, NULL);
253 for (auto link : *route)
254 lmm_expand_add(model->getMaxminSystem(), link->getConstraint(), this->getVariable(), bytes_amount[i * host_nb + j]);
261 if (nb_link + nb_used_host == 0) {
263 this->setRemains(0.0);
268 Action *NetworkL07Model::communicate(NetCard *src, NetCard *dst,
269 double size, double rate)
271 sg_host_t*host_list = xbt_new0(sg_host_t, 2);
272 double *flops_amount = xbt_new0(double, 2);
273 double *bytes_amount = xbt_new0(double, 4);
276 host_list[0] = sg_host_by_name(src->name());
277 host_list[1] = sg_host_by_name(dst->name());
278 bytes_amount[1] = size;
280 res = p_hostModel->executeParallelTask(2, host_list, flops_amount, bytes_amount, rate);
285 Cpu *CpuL07Model::createCpu(simgrid::s4u::Host *host, xbt_dynar_t powerPeakList,
286 tmgr_trace_t power_trace, int core, tmgr_trace_t state_trace)
288 CpuL07 *cpu = new CpuL07(this, host, powerPeakList, power_trace, core, state_trace);
292 Link* NetworkL07Model::createLink(const char *name, double bandwidth, double latency,
293 e_surf_link_sharing_policy_t policy, xbt_dict_t properties)
295 xbt_assert(!Link::byName(name),
296 "Link '%s' declared several times in the platform.", name);
298 Link* link = new LinkL07(this, name, properties, bandwidth, latency, policy);
299 Link::onCreation(link);
307 CpuL07::CpuL07(CpuL07Model *model, simgrid::s4u::Host *host,
308 xbt_dynar_t speedPeakList,
309 tmgr_trace_t speedTrace,
310 int core, tmgr_trace_t state_trace)
311 : Cpu(model, host, speedPeakList, core, xbt_dynar_get_as(speedPeakList,0,double))
313 p_constraint = lmm_constraint_new(model->getMaxminSystem(), this, xbt_dynar_get_as(speedPeakList,0,double));
316 p_speed.event = future_evt_set->add_trace(speedTrace, 0.0, this);
319 p_stateEvent = future_evt_set->add_trace(state_trace, 0.0, this);
326 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props, double bandwidth, double latency,
327 e_surf_link_sharing_policy_t policy)
328 : Link(model, name, props, lmm_constraint_new(model->getMaxminSystem(), this, bandwidth))
330 m_bandwidth.peak = bandwidth;
331 m_latency.peak = latency;
333 if (policy == SURF_LINK_FATPIPE)
334 lmm_constraint_shared(getConstraint());
337 Action *CpuL07::execution_start(double size)
339 sg_host_t*host_list = xbt_new0(sg_host_t, 1);
340 double *flops_amount = xbt_new0(double, 1);
342 host_list[0] = getHost();
343 flops_amount[0] = size;
345 return static_cast<CpuL07Model*>(getModel())->p_hostModel
346 ->executeParallelTask( 1, host_list, flops_amount, NULL, -1);
349 Action *CpuL07::sleep(double duration)
351 L07Action *action = static_cast<L07Action*>(execution_start(1.0));
352 action->m_maxDuration = duration;
353 action->m_suspended = 2;
354 lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
359 bool CpuL07::isUsed(){
360 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
363 /** @brief take into account changes of speed (either load or max) */
364 void CpuL07::onSpeedChange() {
365 lmm_variable_t var = NULL;
366 lmm_element_t elem = NULL;
368 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), p_speed.peak * p_speed.scale);
369 while ((var = lmm_get_var_from_cnst
370 (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
371 Action *action = static_cast<Action*>(lmm_variable_id(var));
373 lmm_update_variable_bound(getModel()->getMaxminSystem(),
374 action->getVariable(),
375 p_speed.scale * p_speed.peak);
378 Cpu::onSpeedChange();
382 bool LinkL07::isUsed(){
383 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
386 void CpuL07::apply_event(tmgr_trace_iterator_t triggered, double value){
387 XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
388 if (triggered == p_speed.event) {
389 p_speed.scale = value;
391 tmgr_trace_event_unref(&p_speed.event);
393 } else if (triggered == p_stateEvent) {
398 tmgr_trace_event_unref(&p_stateEvent);
401 xbt_die("Unknown event!\n");
405 void LinkL07::apply_event(tmgr_trace_iterator_t triggered, double value) {
406 XBT_DEBUG("Updating link %s (%p) with value=%f", getName(), this, value);
407 if (triggered == m_bandwidth.event) {
408 updateBandwidth(value);
409 tmgr_trace_event_unref(&m_bandwidth.event);
411 } else if (triggered == m_latency.event) {
412 updateLatency(value);
413 tmgr_trace_event_unref(&m_latency.event);
415 } else if (triggered == m_stateEvent) {
420 tmgr_trace_event_unref(&m_stateEvent);
423 xbt_die("Unknown event ! \n");
427 void LinkL07::updateBandwidth(double value)
429 m_bandwidth.peak = value;
430 lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_bandwidth.peak * m_bandwidth.scale);
433 void LinkL07::updateLatency(double value)
435 lmm_variable_t var = NULL;
437 lmm_element_t elem = NULL;
439 m_latency.peak = value;
440 while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
441 action = static_cast<L07Action*>(lmm_variable_id(var));
442 action->updateBound();
450 L07Action::~L07Action(){
451 delete p_netcardList;
452 free(p_communicationAmount);
453 free(p_computationAmount);
456 void L07Action::updateBound()
458 double lat_current = 0.0;
459 double lat_bound = -1.0;
462 int hostNb = p_netcardList->size();
464 if (p_communicationAmount != NULL) {
465 for (i = 0; i < hostNb; i++) {
466 for (j = 0; j < hostNb; j++) {
468 if (p_communicationAmount[i * hostNb + j] > 0) {
470 std::vector<Link*> *route = new std::vector<Link*>();
471 routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j], route, &lat);
473 lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
479 lat_bound = sg_tcp_gamma / (2.0 * lat_current);
480 XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
481 if ((m_latency == 0.0) && (m_suspended == 0)) {
483 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
485 lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(),
486 std::min(m_rate, lat_bound));
490 int L07Action::unref()
494 if (action_hook.is_linked())
495 p_stateSet->erase(p_stateSet->iterator_to(*this));
497 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());