1 /* Copyright (c) 2013-2023. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "src/kernel/resource/models/network_cm02.hpp"
7 #include "simgrid/kernel/routing/NetZoneImpl.hpp"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "simgrid/s4u/Host.hpp"
10 #include "simgrid/sg_config.hpp"
11 #include "src/kernel/EngineImpl.hpp"
12 #include "src/kernel/resource/StandardLinkImpl.hpp"
13 #include "src/kernel/resource/WifiLinkImpl.hpp"
14 #include "src/kernel/resource/profile/Event.hpp"
19 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_network);
24 static simgrid::config::Flag<std::string> cfg_network_solver("network/solver",
25 "Set linear equations solver used by network model",
26 "maxmin", &simgrid::kernel::lmm::System::validate_solver);
28 /******************************************************************************/
29 /* Network model based on optimizations discussed during Pedro Velho's thesis */
30 /******************************************************************************/
31 /* @techreport{VELHO:2011:HAL-00646896:1, */
32 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
33 /* title = {{Flow-level network models: have we reached the limits?}}, */
34 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
35 /* type = {Rapport de recherche}, */
36 /* institution = {INRIA}, */
37 /* number = {RR-7821}, */
40 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
42 SIMGRID_REGISTER_NETWORK_MODEL(
44 "Realistic network analytic model (slow-start modeled by multiplying latency by 13.01, bandwidth by .97; "
45 "bottleneck sharing uses a payload of S=20537 for evaluating RTT). ",
47 auto net_model = std::make_shared<simgrid::kernel::resource::NetworkCm02Model>("Network_LegrandVelho");
48 auto* engine = simgrid::kernel::EngineImpl::get_instance();
49 engine->add_model(net_model);
50 engine->get_netzone_root()->set_network_model(net_model);
52 simgrid::config::set_default<std::string>("network/latency-factor", "13.01");
53 simgrid::config::set_default<std::string>("network/bandwidth-factor", "0.97");
54 simgrid::config::set_default<double>("network/weight-S", 20537);
57 /****************************************************************************/
58 /* The older TCP sharing model designed by Loris Marchal and Henri Casanova */
59 /****************************************************************************/
60 /* @TechReport{ rr-lip2002-40, */
61 /* author = {Henri Casanova and Loris Marchal}, */
62 /* institution = {LIP}, */
63 /* title = {A Network Model for Simulation of Grid Application}, */
64 /* number = {2002-40}, */
68 SIMGRID_REGISTER_NETWORK_MODEL(
70 "Legacy network analytic model (Very similar to LV08, but without corrective factors. The timings of "
71 "small messages are thus poorly modeled).",
73 simgrid::config::set_default<std::string>("network/latency-factor", "1.0");
74 simgrid::config::set_default<std::string>("network/bandwidth-factor", "1.0");
75 simgrid::config::set_default<double>("network/weight-S", 0.0);
77 auto net_model = std::make_shared<simgrid::kernel::resource::NetworkCm02Model>("Network_CM02");
78 auto* engine = simgrid::kernel::EngineImpl::get_instance();
79 engine->add_model(net_model);
80 engine->get_netzone_root()->set_network_model(net_model);
83 /********************************************************************/
84 /* Model based on LV08 and experimental results of MPI ping-pongs */
85 /********************************************************************/
86 /* @Inproceedings{smpi_ipdps, */
87 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and
89 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
90 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
91 /* address={Anchorage (Alaska) USA}, */
95 SIMGRID_REGISTER_NETWORK_MODEL(
97 "Realistic network model specifically tailored for HPC settings (accurate modeling of slow start with "
98 "correction factors on three intervals: < 1KiB, < 64 KiB, >= 64 KiB)",
100 auto net_model = std::make_shared<simgrid::kernel::resource::NetworkCm02Model>("Network_SMPI");
101 auto* engine = simgrid::kernel::EngineImpl::get_instance();
102 engine->add_model(net_model);
103 engine->get_netzone_root()->set_network_model(net_model);
105 simgrid::config::set_default<double>("network/weight-S", 8775);
106 simgrid::config::set_default<std::string>("network/bandwidth-factor",
107 "65472:0.940694;15424:0.697866;9376:0.58729;5776:1.08739;3484:0.77493;"
108 "1426:0.608902;732:0.341987;257:0.338112;0:0.812084");
109 simgrid::config::set_default<std::string>("network/latency-factor",
110 "65472:11.6436;15424:3.48845;9376:2.59299;5776:2.18796;3484:1.88101;"
111 "1426:1.61075;732:1.9503;257:1.95341;0:2.01467");
114 namespace simgrid::kernel::resource {
115 static simgrid::config::Flag<std::string>
116 network_optim_opt("network/optim", "Optimization algorithm to use for network resources. ", "Lazy",
118 std::map<std::string, std::string, std::less<>>({
119 {"Lazy", "Lazy action management (partial invalidation in lmm + heap in action remaining)."},
120 {"Full", "Full update of remaining and variables. Slow but may be useful when debugging."},
123 [](std::string const&) {
124 xbt_assert(_sg_cfg_init_status < 2,
125 "Cannot change the optimization algorithm after the initialization");
128 NetworkCm02Model::NetworkCm02Model(const std::string& name) : NetworkModel(name)
130 bool select = config::get_value<bool>("network/maxmin-selective-update");
132 if (network_optim_opt == "Lazy") {
133 set_update_algorithm(Model::UpdateAlgo::LAZY);
134 xbt_assert(select || config::is_default("network/maxmin-selective-update"),
135 "You cannot disable network selective update when using the lazy update mechanism");
139 set_maxmin_system(lmm::System::build(cfg_network_solver.get(), select));
141 loopback_.reset(create_link("__loopback__", {config::get_value<double>("network/loopback-bw")}));
142 loopback_->set_sharing_policy(s4u::Link::SharingPolicy::FATPIPE, {});
143 loopback_->set_latency(config::get_value<double>("network/loopback-lat"));
144 loopback_->get_iface()->seal();
147 StandardLinkImpl* NetworkCm02Model::create_link(const std::string& name, const std::vector<double>& bandwidths)
149 xbt_assert(bandwidths.size() == 1, "Non-WIFI links must use only 1 bandwidth.");
150 auto link = new NetworkCm02Link(name, bandwidths[0], get_maxmin_system());
151 link->set_model(this);
155 StandardLinkImpl* NetworkCm02Model::create_wifi_link(const std::string& name, const std::vector<double>& bandwidths)
157 auto link = new WifiLinkImpl(name, bandwidths, get_maxmin_system());
158 link->set_model(this);
162 void NetworkCm02Model::update_actions_state_lazy(double now, double /*delta*/)
164 while (not get_action_heap().empty() && double_equals(get_action_heap().top_date(), now, sg_precision_timing)) {
165 auto* action = static_cast<NetworkCm02Action*>(get_action_heap().pop());
166 XBT_DEBUG("Something happened to action %p", action);
168 // if I am wearing a latency hat
169 if (action->get_type() == ActionHeap::Type::latency) {
170 XBT_DEBUG("Latency paid for action %p. Activating", action);
171 get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
172 get_action_heap().remove(action);
173 action->set_last_update();
175 // if I am wearing a max_duration or normal hat
176 } else if (action->get_type() == ActionHeap::Type::max_duration || action->get_type() == ActionHeap::Type::normal) {
177 // no need to communicate anymore
178 // assume that flows that reached max_duration have remaining of 0
179 XBT_DEBUG("Action %p finished", action);
180 action->finish(Action::State::FINISHED);
181 get_action_heap().remove(action);
186 void NetworkCm02Model::update_actions_state_full(double /*now*/, double delta)
188 for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
189 auto& action = static_cast<NetworkCm02Action&>(*it);
190 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
191 XBT_DEBUG("Something happened to action %p", &action);
192 if (action.latency_ > 0) {
193 if (action.latency_ > delta) {
194 double_update(&action.latency_, delta, sg_precision_timing);
196 action.latency_ = 0.0;
198 if (action.latency_ <= 0.0 && not action.is_suspended())
199 get_maxmin_system()->update_variable_penalty(action.get_variable(), action.sharing_penalty_);
202 if (not action.get_variable()->get_number_of_constraint()) {
203 /* There is actually no link used, hence an infinite bandwidth. This happens often when using models like
204 * vivaldi. In such case, just make sure that the action completes immediately.
206 action.update_remains(action.get_remains());
208 action.update_remains(action.get_rate() * delta);
210 if (action.get_max_duration() != NO_MAX_DURATION)
211 action.update_max_duration(delta);
213 if (((action.get_remains() <= 0) && (action.get_variable()->get_penalty() > 0)) ||
214 ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
215 action.finish(Action::State::FINISHED);
220 void NetworkCm02Model::comm_action_expand_constraints(const s4u::Host* src, const s4u::Host* dst,
221 const NetworkCm02Action* action,
222 const std::vector<StandardLinkImpl*>& route,
223 const std::vector<StandardLinkImpl*>& back_route) const
225 /* expand route links constraints for route and back_route */
226 const WifiLinkImpl* src_wifi_link = nullptr;
227 const WifiLinkImpl* dst_wifi_link = nullptr;
228 if (not route.empty() && route.front()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
229 src_wifi_link = static_cast<WifiLinkImpl*>(route.front());
231 if (route.size() > 1 && route.back()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
232 dst_wifi_link = static_cast<WifiLinkImpl*>(route.back());
235 /* WI-FI links needs special treatment, do it here */
236 if (src_wifi_link != nullptr) {
237 if (src_wifi_link->get_host_rate(src) > 0)
238 get_maxmin_system()->expand(src_wifi_link->get_constraint(), action->get_variable(),
239 1.0 / src_wifi_link->get_host_rate(src));
241 get_maxmin_system()->update_variable_penalty(action->get_variable(), 0);
245 if (dst_wifi_link != nullptr) {
246 if (dst_wifi_link->get_host_rate(dst) > 0)
247 get_maxmin_system()->expand(dst_wifi_link->get_constraint(), action->get_variable(),
248 1.0 / dst_wifi_link->get_host_rate(dst));
250 get_maxmin_system()->update_variable_penalty(action->get_variable(), 0);
254 for (auto const* link : route) {
255 if (link->get_sharing_policy() != s4u::Link::SharingPolicy::WIFI)
256 get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), 1.0);
259 if (cfg_crosstraffic) {
260 XBT_DEBUG("Crosstraffic active: adding backward flow using 5%% of the available bandwidth");
261 if (dst_wifi_link != nullptr)
262 get_maxmin_system()->expand(dst_wifi_link->get_constraint(), action->get_variable(),
263 .05 / dst_wifi_link->get_host_rate(dst));
264 if (src_wifi_link != nullptr)
265 get_maxmin_system()->expand(src_wifi_link->get_constraint(), action->get_variable(),
266 .05 / src_wifi_link->get_host_rate(src));
268 for (auto const* link : back_route) {
269 if (link->get_sharing_policy() != s4u::Link::SharingPolicy::WIFI)
270 get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), .05);
275 NetworkCm02Action* NetworkCm02Model::comm_action_create(s4u::Host* src, s4u::Host* dst, double size,
276 const std::vector<StandardLinkImpl*>& route, bool failed)
278 WifiLinkImpl* src_wifi_link = nullptr;
279 WifiLinkImpl* dst_wifi_link = nullptr;
280 /* many checks related to Wi-Fi links */
281 if (not route.empty() && route.front()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
282 src_wifi_link = static_cast<WifiLinkImpl*>(route.front());
283 xbt_assert(src_wifi_link->get_host_rate(src) != -1,
284 "The route from %s to %s begins with the WIFI link %s, but the host %s does not seem attached to that "
285 "WIFI link. Did you call link->set_host_rate()?",
286 src->get_cname(), dst->get_cname(), src_wifi_link->get_cname(), src->get_cname());
288 if (route.size() > 1 && route.back()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
289 dst_wifi_link = static_cast<WifiLinkImpl*>(route.back());
290 xbt_assert(dst_wifi_link->get_host_rate(dst) != -1,
291 "The route from %s to %s ends with the WIFI link %s, but the host %s does not seem attached to that "
292 "WIFI link. Did you call link->set_host_rate()?",
293 src->get_cname(), dst->get_cname(), dst_wifi_link->get_cname(), dst->get_cname());
295 if (route.size() > 2)
296 for (unsigned i = 1; i < route.size() - 1; i++)
297 xbt_assert(route[i]->get_sharing_policy() != s4u::Link::SharingPolicy::WIFI,
298 "Link '%s' is a WIFI link. It can only be at the beginning or the end of the route from '%s' to '%s', "
299 "not in between (it is at position %u out of %zu). "
300 "Did you declare an access_point in your WIFI zones?",
301 route[i]->get_cname(), src->get_cname(), dst->get_cname(), i + 1, route.size());
303 for (auto const* link : route) {
304 if (link->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
305 xbt_assert(link == src_wifi_link || link == dst_wifi_link,
306 "Wifi links can only occur at the beginning of the route (meaning that it's attached to the src) or "
307 "at its end (meaning that it's attached to the dst");
311 /* create action and do some initializations */
312 NetworkCm02Action* action;
313 if (src_wifi_link == nullptr && dst_wifi_link == nullptr)
314 action = new NetworkCm02Action(this, *src, *dst, size, failed);
316 action = new WifiLinkAction(this, *src, *dst, size, failed, src_wifi_link, dst_wifi_link);
318 if (is_update_lazy()) {
319 action->set_last_update();
325 bool NetworkCm02Model::comm_get_route_info(const s4u::Host* src, const s4u::Host* dst, double& latency,
326 std::vector<StandardLinkImpl*>& route,
327 std::vector<StandardLinkImpl*>& back_route,
328 std::unordered_set<kernel::routing::NetZoneImpl*>& netzones) const
330 kernel::routing::NetZoneImpl::get_global_route_with_netzones(src->get_netpoint(), dst->get_netpoint(), route,
333 xbt_assert(not route.empty() || latency > 0,
334 "You're trying to send data from %s to %s but there is no connecting path between these two hosts.",
335 src->get_cname(), dst->get_cname());
337 bool failed = std::any_of(route.begin(), route.end(), [](const StandardLinkImpl* link) { return not link->is_on(); });
339 if (not failed && cfg_crosstraffic) {
340 dst->route_to(src, back_route, nullptr);
341 failed = std::any_of(back_route.begin(), back_route.end(),
342 [](const StandardLinkImpl* link) { return not link->is_on(); });
347 void NetworkCm02Model::comm_action_set_bounds(const s4u::Host* src, const s4u::Host* dst, double size,
348 NetworkCm02Action* action, const std::vector<StandardLinkImpl*>& route,
349 const std::unordered_set<kernel::routing::NetZoneImpl*>& netzones,
352 std::vector<s4u::Link*> s4u_route;
353 std::unordered_set<s4u::NetZone*> s4u_netzones;
355 /* transform data to user structures if necessary */
356 if (has_network_factor_cb()) {
357 std::for_each(route.begin(), route.end(),
358 [&s4u_route](StandardLinkImpl* l) { s4u_route.push_back(l->get_iface()); });
359 std::for_each(netzones.begin(), netzones.end(),
360 [&s4u_netzones](kernel::routing::NetZoneImpl* n) { s4u_netzones.insert(n->get_iface()); });
363 double bw_factor = get_bandwidth_factor(size, src, dst, s4u_route, s4u_netzones);
364 xbt_assert(bw_factor != 0, "Invalid param for comm %s -> %s. Bandwidth factor cannot be 0", src->get_cname(),
366 action->set_rate_factor(bw_factor);
368 /* get mininum bandwidth among links in the route and multiply by correct factor
369 * ignore wi-fi links, they're not considered for bw_factors */
370 double bandwidth_bound = -1.0;
371 for (const auto* l : route) {
372 if (l->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI)
374 if (bandwidth_bound == -1.0 || l->get_bandwidth() < bandwidth_bound)
375 bandwidth_bound = l->get_bandwidth();
378 /* increase rate given by user considering the factor, since the actual rate will be
380 rate = rate / bw_factor;
381 /* the bandwidth is determined by the minimum between flow and user's defined rate */
382 if (rate >= 0 && rate < bandwidth_bound)
383 bandwidth_bound = rate;
384 action->set_user_bound(bandwidth_bound);
386 action->lat_current_ = action->latency_;
387 action->latency_ *= get_latency_factor(size, src, dst, s4u_route, s4u_netzones);
390 void NetworkCm02Model::comm_action_set_variable(NetworkCm02Action* action, const std::vector<StandardLinkImpl*>& route,
391 const std::vector<StandardLinkImpl*>& back_route, bool streamed)
393 size_t constraints_per_variable = route.size();
394 constraints_per_variable += back_route.size();
396 // setting the number of variable for a communication action involved in a I/O streaming operation
397 // requires to reserve some extra space for the constraints related to the source disk (global and read
398 // bandwidth) and destination disk (global and write bandwidth). We thus add 4 constraints.
399 constraints_per_variable += 4;
402 if (action->latency_ > 0) {
403 action->set_variable(get_maxmin_system()->variable_new(action, 0.0, -1.0, constraints_per_variable));
404 if (is_update_lazy()) {
405 // add to the heap the event when the latency is paid
406 double date = action->latency_ + action->get_last_update();
408 ActionHeap::Type type = route.empty() ? ActionHeap::Type::normal : ActionHeap::Type::latency;
410 XBT_DEBUG("Added action (%p) one latency event at date %f", action, date);
411 get_action_heap().insert(action, date, type);
414 action->set_variable(get_maxmin_system()->variable_new(action, 1.0, -1.0, constraints_per_variable));
416 /* after setting the variable, update the bounds depending on user configuration */
417 if (action->get_user_bound() < 0) {
418 get_maxmin_system()->update_variable_bound(
419 action->get_variable(),
420 (action->lat_current_ > 0 && cfg_tcp_gamma > 0) ? cfg_tcp_gamma / (2.0 * action->lat_current_) : -1.0);
422 get_maxmin_system()->update_variable_bound(
423 action->get_variable(), (action->lat_current_ > 0 && cfg_tcp_gamma > 0)
424 ? std::min(action->get_user_bound(), cfg_tcp_gamma / (2.0 * action->lat_current_))
425 : action->get_user_bound());
429 Action* NetworkCm02Model::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate, bool streamed)
431 double latency = 0.0;
432 std::vector<StandardLinkImpl*> back_route;
433 std::vector<StandardLinkImpl*> route;
434 std::unordered_set<kernel::routing::NetZoneImpl*> netzones;
436 XBT_IN("(%s,%s,%g,%g)", src->get_cname(), dst->get_cname(), size, rate);
438 bool failed = comm_get_route_info(src, dst, latency, route, back_route, netzones);
440 NetworkCm02Action* action = comm_action_create(src, dst, size, route, failed);
441 action->sharing_penalty_ = latency;
442 action->latency_ = latency;
444 if (cfg_weight_S_parameter > 0) {
445 action->sharing_penalty_ = std::accumulate(route.begin(), route.end(), action->sharing_penalty_,
446 [](double total, StandardLinkImpl* const& link) {
447 return total + cfg_weight_S_parameter / link->get_bandwidth();
451 /* setting bandwidth and latency bounds considering route and configured bw/lat factors */
452 comm_action_set_bounds(src, dst, size, action, route, netzones, rate);
454 /* creating the maxmin variable associated to this action */
455 comm_action_set_variable(action, route, back_route, streamed);
457 /* expand maxmin system to consider this communication in bw constraint for each link in route and back_route */
458 comm_action_expand_constraints(src, dst, action, route, back_route);
467 NetworkCm02Link::NetworkCm02Link(const std::string& name, double bandwidth, kernel::lmm::System* system)
468 : StandardLinkImpl(name)
470 bandwidth_.scale = 1.0;
471 bandwidth_.peak = bandwidth;
472 this->set_constraint(system->constraint_new(this, bandwidth));
475 void NetworkCm02Link::apply_event(kernel::profile::Event* triggered, double value)
477 /* Find out which of my iterators was triggered, and react accordingly */
478 if (triggered == bandwidth_.event) {
479 set_bandwidth(value);
480 tmgr_trace_event_unref(&bandwidth_.event);
482 } else if (triggered == latency_.event) {
484 tmgr_trace_event_unref(&latency_.event);
486 } else if (triggered == get_state_event()) {
493 xbt_die("Unknown event!\n");
496 XBT_DEBUG("There was a resource state event, need to update actions related to the constraint (%p)",
500 void NetworkCm02Link::set_bandwidth(double value)
502 double old_peak = bandwidth_.peak;
503 bandwidth_.peak = value;
505 get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), (bandwidth_.peak * bandwidth_.scale));
507 StandardLinkImpl::on_bandwidth_change();
509 if (NetworkModel::cfg_weight_S_parameter > 0) {
510 double delta = NetworkModel::cfg_weight_S_parameter / (bandwidth_.peak * bandwidth_.scale) -
511 NetworkModel::cfg_weight_S_parameter / (old_peak * bandwidth_.scale);
513 const kernel::lmm::Element* elem = nullptr;
514 const kernel::lmm::Element* nextelem = nullptr;
516 while (const auto* var = get_constraint()->get_variable_safe(&elem, &nextelem, &numelem)) {
517 auto* action = static_cast<NetworkCm02Action*>(var->get_id());
518 action->sharing_penalty_ += delta;
519 if (not action->is_suspended())
520 get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
525 void NetworkCm02Link::set_latency(double value)
527 latency_check(value);
529 double delta = value - latency_.peak;
530 const kernel::lmm::Element* elem = nullptr;
531 const kernel::lmm::Element* nextelem = nullptr;
534 latency_.scale = 1.0;
535 latency_.peak = value;
537 while (const auto* var = get_constraint()->get_variable_safe(&elem, &nextelem, &numelem)) {
538 auto* action = static_cast<NetworkCm02Action*>(var->get_id());
539 action->lat_current_ += delta;
540 action->sharing_penalty_ += delta;
541 if (action->get_user_bound() < 0 && NetworkModel::cfg_tcp_gamma > 0)
542 get_model()->get_maxmin_system()->update_variable_bound(action->get_variable(), NetworkModel::cfg_tcp_gamma /
543 (2.0 * action->lat_current_));
544 else if (NetworkModel::cfg_tcp_gamma > 0) {
545 get_model()->get_maxmin_system()->update_variable_bound(
546 action->get_variable(),
547 std::min(action->get_user_bound(), NetworkModel::cfg_tcp_gamma / (2.0 * action->lat_current_)));
549 if (NetworkModel::cfg_tcp_gamma == 0 ||
550 action->get_user_bound() < NetworkModel::cfg_tcp_gamma / (2.0 * action->lat_current_)) {
551 XBT_DEBUG("Flow is limited BYBANDWIDTH");
553 XBT_DEBUG("Flow is limited BYLATENCY, latency of flow is %f", action->lat_current_);
556 if (not action->is_suspended())
557 get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
565 void NetworkCm02Action::update_remains_lazy(double now)
567 if (not is_running())
570 double delta = now - get_last_update();
572 if (get_remains_no_update() > 0) {
573 XBT_DEBUG("Updating action(%p): remains was %f, last_update was: %f", this, get_remains_no_update(),
575 update_remains(get_last_value() * delta);
577 XBT_DEBUG("Updating action(%p): remains is now %f", this, get_remains_no_update());
580 update_max_duration(delta);
582 if ((get_remains_no_update() <= 0 && (get_variable()->get_penalty() > 0)) ||
583 ((get_max_duration() != NO_MAX_DURATION) && (get_max_duration() <= 0))) {
584 finish(Action::State::FINISHED);
585 get_model()->get_action_heap().remove(this);
589 set_last_value(get_rate());
592 } // namespace simgrid::kernel::resource