+++ /dev/null
-/* Copyright (c) 2013-2023. The SimGrid Team. All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "src/surf/network_cm02.hpp"
-#include "simgrid/kernel/routing/NetZoneImpl.hpp"
-#include "simgrid/s4u/Engine.hpp"
-#include "simgrid/s4u/Host.hpp"
-#include "simgrid/sg_config.hpp"
-#include "src/kernel/EngineImpl.hpp"
-#include "src/kernel/resource/StandardLinkImpl.hpp"
-#include "src/kernel/resource/WifiLinkImpl.hpp"
-#include "src/kernel/resource/profile/Event.hpp"
-#include "src/surf/surf_interface.hpp"
-
-#include <algorithm>
-#include <numeric>
-
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_network);
-
-/***********
- * Options *
- ***********/
-static simgrid::config::Flag<std::string> cfg_network_solver("network/solver",
- "Set linear equations solver used by network model",
- "maxmin", &simgrid::kernel::lmm::System::validate_solver);
-
-/******************************************************************************/
-/* Network model based on optimizations discussed during Pedro Velho's thesis */
-/******************************************************************************/
-/* @techreport{VELHO:2011:HAL-00646896:1, */
-/* url = {http://hal.inria.fr/hal-00646896/en/}, */
-/* title = {{Flow-level network models: have we reached the limits?}}, */
-/* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
-/* type = {Rapport de recherche}, */
-/* institution = {INRIA}, */
-/* number = {RR-7821}, */
-/* year = {2011}, */
-/* month = Nov, */
-/* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
-/* } */
-SIMGRID_REGISTER_NETWORK_MODEL(
- LV08,
- "Realistic network analytic model (slow-start modeled by multiplying latency by 13.01, bandwidth by .97; "
- "bottleneck sharing uses a payload of S=20537 for evaluating RTT). ",
- []() {
- auto net_model = std::make_shared<simgrid::kernel::resource::NetworkCm02Model>("Network_LegrandVelho");
- auto* engine = simgrid::kernel::EngineImpl::get_instance();
- engine->add_model(net_model);
- engine->get_netzone_root()->set_network_model(net_model);
-
- simgrid::config::set_default<std::string>("network/latency-factor", "13.01");
- simgrid::config::set_default<std::string>("network/bandwidth-factor", "0.97");
- simgrid::config::set_default<double>("network/weight-S", 20537);
- });
-
-/****************************************************************************/
-/* The older TCP sharing model designed by Loris Marchal and Henri Casanova */
-/****************************************************************************/
-/* @TechReport{ rr-lip2002-40, */
-/* author = {Henri Casanova and Loris Marchal}, */
-/* institution = {LIP}, */
-/* title = {A Network Model for Simulation of Grid Application}, */
-/* number = {2002-40}, */
-/* month = {oct}, */
-/* year = {2002} */
-/* } */
-SIMGRID_REGISTER_NETWORK_MODEL(
- CM02,
- "Legacy network analytic model (Very similar to LV08, but without corrective factors. The timings of "
- "small messages are thus poorly modeled).",
- []() {
- simgrid::config::set_default<std::string>("network/latency-factor", "1.0");
- simgrid::config::set_default<std::string>("network/bandwidth-factor", "1.0");
- simgrid::config::set_default<double>("network/weight-S", 0.0);
-
- auto net_model = std::make_shared<simgrid::kernel::resource::NetworkCm02Model>("Network_CM02");
- auto* engine = simgrid::kernel::EngineImpl::get_instance();
- engine->add_model(net_model);
- engine->get_netzone_root()->set_network_model(net_model);
- });
-
-/********************************************************************/
-/* Model based on LV08 and experimental results of MPI ping-pongs */
-/********************************************************************/
-/* @Inproceedings{smpi_ipdps, */
-/* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and
- * Martin Quinson}, */
-/* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
-/* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
-/* address={Anchorage (Alaska) USA}, */
-/* month=may, */
-/* year={2011} */
-/* } */
-SIMGRID_REGISTER_NETWORK_MODEL(
- SMPI,
- "Realistic network model specifically tailored for HPC settings (accurate modeling of slow start with "
- "correction factors on three intervals: < 1KiB, < 64 KiB, >= 64 KiB)",
- []() {
- auto net_model = std::make_shared<simgrid::kernel::resource::NetworkCm02Model>("Network_SMPI");
- auto* engine = simgrid::kernel::EngineImpl::get_instance();
- engine->add_model(net_model);
- engine->get_netzone_root()->set_network_model(net_model);
-
- simgrid::config::set_default<double>("network/weight-S", 8775);
- simgrid::config::set_default<std::string>("network/bandwidth-factor",
- "65472:0.940694;15424:0.697866;9376:0.58729;5776:1.08739;3484:0.77493;"
- "1426:0.608902;732:0.341987;257:0.338112;0:0.812084");
- simgrid::config::set_default<std::string>("network/latency-factor",
- "65472:11.6436;15424:3.48845;9376:2.59299;5776:2.18796;3484:1.88101;"
- "1426:1.61075;732:1.9503;257:1.95341;0:2.01467");
- });
-
-namespace simgrid::kernel::resource {
-static simgrid::config::Flag<std::string>
- network_optim_opt("network/optim", "Optimization algorithm to use for network resources. ", "Lazy",
-
- std::map<std::string, std::string, std::less<>>({
- {"Lazy", "Lazy action management (partial invalidation in lmm + heap in action remaining)."},
- {"Full", "Full update of remaining and variables. Slow but may be useful when debugging."},
- }),
-
- [](std::string const&) {
- xbt_assert(_sg_cfg_init_status < 2,
- "Cannot change the optimization algorithm after the initialization");
- });
-
-NetworkCm02Model::NetworkCm02Model(const std::string& name) : NetworkModel(name)
-{
- bool select = config::get_value<bool>("network/maxmin-selective-update");
-
- if (network_optim_opt == "Lazy") {
- set_update_algorithm(Model::UpdateAlgo::LAZY);
- xbt_assert(select || config::is_default("network/maxmin-selective-update"),
- "You cannot disable network selective update when using the lazy update mechanism");
- select = true;
- }
-
- set_maxmin_system(lmm::System::build(cfg_network_solver.get(), select));
-
- loopback_.reset(create_link("__loopback__", {config::get_value<double>("network/loopback-bw")}));
- loopback_->set_sharing_policy(s4u::Link::SharingPolicy::FATPIPE, {});
- loopback_->set_latency(config::get_value<double>("network/loopback-lat"));
- loopback_->get_iface()->seal();
-}
-
-StandardLinkImpl* NetworkCm02Model::create_link(const std::string& name, const std::vector<double>& bandwidths)
-{
- xbt_assert(bandwidths.size() == 1, "Non-WIFI links must use only 1 bandwidth.");
- auto link = new NetworkCm02Link(name, bandwidths[0], get_maxmin_system());
- link->set_model(this);
- return link;
-}
-
-StandardLinkImpl* NetworkCm02Model::create_wifi_link(const std::string& name, const std::vector<double>& bandwidths)
-{
- auto link = new WifiLinkImpl(name, bandwidths, get_maxmin_system());
- link->set_model(this);
- return link;
-}
-
-void NetworkCm02Model::update_actions_state_lazy(double now, double /*delta*/)
-{
- while (not get_action_heap().empty() && double_equals(get_action_heap().top_date(), now, sg_precision_timing)) {
- auto* action = static_cast<NetworkCm02Action*>(get_action_heap().pop());
- XBT_DEBUG("Something happened to action %p", action);
-
- // if I am wearing a latency hat
- if (action->get_type() == ActionHeap::Type::latency) {
- XBT_DEBUG("Latency paid for action %p. Activating", action);
- get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
- get_action_heap().remove(action);
- action->set_last_update();
-
- // if I am wearing a max_duration or normal hat
- } else if (action->get_type() == ActionHeap::Type::max_duration || action->get_type() == ActionHeap::Type::normal) {
- // no need to communicate anymore
- // assume that flows that reached max_duration have remaining of 0
- XBT_DEBUG("Action %p finished", action);
- action->finish(Action::State::FINISHED);
- get_action_heap().remove(action);
- }
- }
-}
-
-void NetworkCm02Model::update_actions_state_full(double /*now*/, double delta)
-{
- for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
- auto& action = static_cast<NetworkCm02Action&>(*it);
- ++it; // increment iterator here since the following calls to action.finish() may invalidate it
- XBT_DEBUG("Something happened to action %p", &action);
- if (action.latency_ > 0) {
- if (action.latency_ > delta) {
- double_update(&action.latency_, delta, sg_precision_timing);
- } else {
- action.latency_ = 0.0;
- }
- if (action.latency_ <= 0.0 && not action.is_suspended())
- get_maxmin_system()->update_variable_penalty(action.get_variable(), action.sharing_penalty_);
- }
-
- if (not action.get_variable()->get_number_of_constraint()) {
- /* There is actually no link used, hence an infinite bandwidth. This happens often when using models like
- * vivaldi. In such case, just make sure that the action completes immediately.
- */
- action.update_remains(action.get_remains());
- }
- action.update_remains(action.get_rate() * delta);
-
- if (action.get_max_duration() != NO_MAX_DURATION)
- action.update_max_duration(delta);
-
- if (((action.get_remains() <= 0) && (action.get_variable()->get_penalty() > 0)) ||
- ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
- action.finish(Action::State::FINISHED);
- }
- }
-}
-
-void NetworkCm02Model::comm_action_expand_constraints(const s4u::Host* src, const s4u::Host* dst,
- const NetworkCm02Action* action,
- const std::vector<StandardLinkImpl*>& route,
- const std::vector<StandardLinkImpl*>& back_route) const
-{
- /* expand route links constraints for route and back_route */
- const WifiLinkImpl* src_wifi_link = nullptr;
- const WifiLinkImpl* dst_wifi_link = nullptr;
- if (not route.empty() && route.front()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
- src_wifi_link = static_cast<WifiLinkImpl*>(route.front());
- }
- if (route.size() > 1 && route.back()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
- dst_wifi_link = static_cast<WifiLinkImpl*>(route.back());
- }
-
- /* WI-FI links needs special treatment, do it here */
- if (src_wifi_link != nullptr) {
- if (src_wifi_link->get_host_rate(src) > 0)
- get_maxmin_system()->expand(src_wifi_link->get_constraint(), action->get_variable(),
- 1.0 / src_wifi_link->get_host_rate(src));
- else {
- get_maxmin_system()->update_variable_penalty(action->get_variable(), 0);
- }
- }
-
- if (dst_wifi_link != nullptr) {
- if (dst_wifi_link->get_host_rate(dst) > 0)
- get_maxmin_system()->expand(dst_wifi_link->get_constraint(), action->get_variable(),
- 1.0 / dst_wifi_link->get_host_rate(dst));
- else {
- get_maxmin_system()->update_variable_penalty(action->get_variable(), 0);
- }
- }
-
- for (auto const* link : route) {
- if (link->get_sharing_policy() != s4u::Link::SharingPolicy::WIFI)
- get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), 1.0);
- }
-
- if (cfg_crosstraffic) {
- XBT_DEBUG("Crosstraffic active: adding backward flow using 5%% of the available bandwidth");
- if (dst_wifi_link != nullptr)
- get_maxmin_system()->expand(dst_wifi_link->get_constraint(), action->get_variable(),
- .05 / dst_wifi_link->get_host_rate(dst));
- if (src_wifi_link != nullptr)
- get_maxmin_system()->expand(src_wifi_link->get_constraint(), action->get_variable(),
- .05 / src_wifi_link->get_host_rate(src));
-
- for (auto const* link : back_route) {
- if (link->get_sharing_policy() != s4u::Link::SharingPolicy::WIFI)
- get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), .05);
- }
- }
-}
-
-NetworkCm02Action* NetworkCm02Model::comm_action_create(s4u::Host* src, s4u::Host* dst, double size,
- const std::vector<StandardLinkImpl*>& route, bool failed)
-{
- WifiLinkImpl* src_wifi_link = nullptr;
- WifiLinkImpl* dst_wifi_link = nullptr;
- /* many checks related to Wi-Fi links */
- if (not route.empty() && route.front()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
- src_wifi_link = static_cast<WifiLinkImpl*>(route.front());
- xbt_assert(src_wifi_link->get_host_rate(src) != -1,
- "The route from %s to %s begins with the WIFI link %s, but the host %s does not seem attached to that "
- "WIFI link. Did you call link->set_host_rate()?",
- src->get_cname(), dst->get_cname(), src_wifi_link->get_cname(), src->get_cname());
- }
- if (route.size() > 1 && route.back()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
- dst_wifi_link = static_cast<WifiLinkImpl*>(route.back());
- xbt_assert(dst_wifi_link->get_host_rate(dst) != -1,
- "The route from %s to %s ends with the WIFI link %s, but the host %s does not seem attached to that "
- "WIFI link. Did you call link->set_host_rate()?",
- src->get_cname(), dst->get_cname(), dst_wifi_link->get_cname(), dst->get_cname());
- }
- if (route.size() > 2)
- for (unsigned i = 1; i < route.size() - 1; i++)
- xbt_assert(route[i]->get_sharing_policy() != s4u::Link::SharingPolicy::WIFI,
- "Link '%s' is a WIFI link. It can only be at the beginning or the end of the route from '%s' to '%s', "
- "not in between (it is at position %u out of %zu). "
- "Did you declare an access_point in your WIFI zones?",
- route[i]->get_cname(), src->get_cname(), dst->get_cname(), i + 1, route.size());
-
- for (auto const* link : route) {
- if (link->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
- xbt_assert(link == src_wifi_link || link == dst_wifi_link,
- "Wifi links can only occur at the beginning of the route (meaning that it's attached to the src) or "
- "at its end (meaning that it's attached to the dst");
- }
- }
-
- /* create action and do some initializations */
- NetworkCm02Action* action;
- if (src_wifi_link == nullptr && dst_wifi_link == nullptr)
- action = new NetworkCm02Action(this, *src, *dst, size, failed);
- else
- action = new WifiLinkAction(this, *src, *dst, size, failed, src_wifi_link, dst_wifi_link);
-
- if (is_update_lazy()) {
- action->set_last_update();
- }
-
- return action;
-}
-
-bool NetworkCm02Model::comm_get_route_info(const s4u::Host* src, const s4u::Host* dst, double& latency,
- std::vector<StandardLinkImpl*>& route,
- std::vector<StandardLinkImpl*>& back_route,
- std::unordered_set<kernel::routing::NetZoneImpl*>& netzones) const
-{
- kernel::routing::NetZoneImpl::get_global_route_with_netzones(src->get_netpoint(), dst->get_netpoint(), route,
- &latency, netzones);
-
- xbt_assert(not route.empty() || latency > 0,
- "You're trying to send data from %s to %s but there is no connecting path between these two hosts.",
- src->get_cname(), dst->get_cname());
-
- bool failed = std::any_of(route.begin(), route.end(), [](const StandardLinkImpl* link) { return not link->is_on(); });
-
- if (not failed && cfg_crosstraffic) {
- dst->route_to(src, back_route, nullptr);
- failed = std::any_of(back_route.begin(), back_route.end(),
- [](const StandardLinkImpl* link) { return not link->is_on(); });
- }
- return failed;
-}
-
-void NetworkCm02Model::comm_action_set_bounds(const s4u::Host* src, const s4u::Host* dst, double size,
- NetworkCm02Action* action, const std::vector<StandardLinkImpl*>& route,
- const std::unordered_set<kernel::routing::NetZoneImpl*>& netzones,
- double rate) const
-{
- std::vector<s4u::Link*> s4u_route;
- std::unordered_set<s4u::NetZone*> s4u_netzones;
-
- /* transform data to user structures if necessary */
- if (has_network_factor_cb()) {
- std::for_each(route.begin(), route.end(),
- [&s4u_route](StandardLinkImpl* l) { s4u_route.push_back(l->get_iface()); });
- std::for_each(netzones.begin(), netzones.end(),
- [&s4u_netzones](kernel::routing::NetZoneImpl* n) { s4u_netzones.insert(n->get_iface()); });
- }
-
- double bw_factor = get_bandwidth_factor(size, src, dst, s4u_route, s4u_netzones);
- xbt_assert(bw_factor != 0, "Invalid param for comm %s -> %s. Bandwidth factor cannot be 0", src->get_cname(),
- dst->get_cname());
- action->set_rate_factor(bw_factor);
-
- /* get mininum bandwidth among links in the route and multiply by correct factor
- * ignore wi-fi links, they're not considered for bw_factors */
- double bandwidth_bound = -1.0;
- for (const auto* l : route) {
- if (l->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI)
- continue;
- if (bandwidth_bound == -1.0 || l->get_bandwidth() < bandwidth_bound)
- bandwidth_bound = l->get_bandwidth();
- }
-
- /* increase rate given by user considering the factor, since the actual rate will be
- * modified by it */
- rate = rate / bw_factor;
- /* the bandwidth is determined by the minimum between flow and user's defined rate */
- if (rate >= 0 && rate < bandwidth_bound)
- bandwidth_bound = rate;
- action->set_user_bound(bandwidth_bound);
-
- action->lat_current_ = action->latency_;
- action->latency_ *= get_latency_factor(size, src, dst, s4u_route, s4u_netzones);
-}
-
-void NetworkCm02Model::comm_action_set_variable(NetworkCm02Action* action, const std::vector<StandardLinkImpl*>& route,
- const std::vector<StandardLinkImpl*>& back_route, bool streamed)
-{
- size_t constraints_per_variable = route.size();
- constraints_per_variable += back_route.size();
- if (streamed) {
- // setting the number of variable for a communication action involved in a I/O streaming operation
- // requires to reserve some extra space for the constraints related to the source disk (global and read
- // bandwidth) and destination disk (global and write bandwidth). We thus add 4 constraints.
- constraints_per_variable += 4;
- }
-
- if (action->latency_ > 0) {
- action->set_variable(get_maxmin_system()->variable_new(action, 0.0, -1.0, constraints_per_variable));
- if (is_update_lazy()) {
- // add to the heap the event when the latency is paid
- double date = action->latency_ + action->get_last_update();
-
- ActionHeap::Type type = route.empty() ? ActionHeap::Type::normal : ActionHeap::Type::latency;
-
- XBT_DEBUG("Added action (%p) one latency event at date %f", action, date);
- get_action_heap().insert(action, date, type);
- }
- } else
- action->set_variable(get_maxmin_system()->variable_new(action, 1.0, -1.0, constraints_per_variable));
-
- /* after setting the variable, update the bounds depending on user configuration */
- if (action->get_user_bound() < 0) {
- get_maxmin_system()->update_variable_bound(
- action->get_variable(),
- (action->lat_current_ > 0 && cfg_tcp_gamma > 0) ? cfg_tcp_gamma / (2.0 * action->lat_current_) : -1.0);
- } else {
- get_maxmin_system()->update_variable_bound(
- action->get_variable(), (action->lat_current_ > 0 && cfg_tcp_gamma > 0)
- ? std::min(action->get_user_bound(), cfg_tcp_gamma / (2.0 * action->lat_current_))
- : action->get_user_bound());
- }
-}
-
-Action* NetworkCm02Model::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate, bool streamed)
-{
- double latency = 0.0;
- std::vector<StandardLinkImpl*> back_route;
- std::vector<StandardLinkImpl*> route;
- std::unordered_set<kernel::routing::NetZoneImpl*> netzones;
-
- XBT_IN("(%s,%s,%g,%g)", src->get_cname(), dst->get_cname(), size, rate);
-
- bool failed = comm_get_route_info(src, dst, latency, route, back_route, netzones);
-
- NetworkCm02Action* action = comm_action_create(src, dst, size, route, failed);
- action->sharing_penalty_ = latency;
- action->latency_ = latency;
-
- if (cfg_weight_S_parameter > 0) {
- action->sharing_penalty_ = std::accumulate(route.begin(), route.end(), action->sharing_penalty_,
- [](double total, StandardLinkImpl* const& link) {
- return total + cfg_weight_S_parameter / link->get_bandwidth();
- });
- }
-
- /* setting bandwidth and latency bounds considering route and configured bw/lat factors */
- comm_action_set_bounds(src, dst, size, action, route, netzones, rate);
-
- /* creating the maxmin variable associated to this action */
- comm_action_set_variable(action, route, back_route, streamed);
-
- /* expand maxmin system to consider this communication in bw constraint for each link in route and back_route */
- comm_action_expand_constraints(src, dst, action, route, back_route);
- XBT_OUT();
-
- return action;
-}
-
-/************
- * Resource *
- ************/
-NetworkCm02Link::NetworkCm02Link(const std::string& name, double bandwidth, kernel::lmm::System* system)
- : StandardLinkImpl(name)
-{
- bandwidth_.scale = 1.0;
- bandwidth_.peak = bandwidth;
- this->set_constraint(system->constraint_new(this, bandwidth));
-}
-
-void NetworkCm02Link::apply_event(kernel::profile::Event* triggered, double value)
-{
- /* Find out which of my iterators was triggered, and react accordingly */
- if (triggered == bandwidth_.event) {
- set_bandwidth(value);
- tmgr_trace_event_unref(&bandwidth_.event);
-
- } else if (triggered == latency_.event) {
- set_latency(value);
- tmgr_trace_event_unref(&latency_.event);
-
- } else if (triggered == get_state_event()) {
- if (value > 0)
- turn_on();
- else
- turn_off();
- unref_state_event();
- } else {
- xbt_die("Unknown event!\n");
- }
-
- XBT_DEBUG("There was a resource state event, need to update actions related to the constraint (%p)",
- get_constraint());
-}
-
-void NetworkCm02Link::set_bandwidth(double value)
-{
- double old_peak = bandwidth_.peak;
- bandwidth_.peak = value;
-
- get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), (bandwidth_.peak * bandwidth_.scale));
-
- StandardLinkImpl::on_bandwidth_change();
-
- if (NetworkModel::cfg_weight_S_parameter > 0) {
- double delta = NetworkModel::cfg_weight_S_parameter / (bandwidth_.peak * bandwidth_.scale) -
- NetworkModel::cfg_weight_S_parameter / (old_peak * bandwidth_.scale);
-
- const kernel::lmm::Element* elem = nullptr;
- const kernel::lmm::Element* nextelem = nullptr;
- size_t numelem = 0;
- while (const auto* var = get_constraint()->get_variable_safe(&elem, &nextelem, &numelem)) {
- auto* action = static_cast<NetworkCm02Action*>(var->get_id());
- action->sharing_penalty_ += delta;
- if (not action->is_suspended())
- get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
- }
- }
-}
-
-void NetworkCm02Link::set_latency(double value)
-{
- latency_check(value);
-
- double delta = value - latency_.peak;
- const kernel::lmm::Element* elem = nullptr;
- const kernel::lmm::Element* nextelem = nullptr;
- size_t numelem = 0;
-
- latency_.scale = 1.0;
- latency_.peak = value;
-
- while (const auto* var = get_constraint()->get_variable_safe(&elem, &nextelem, &numelem)) {
- auto* action = static_cast<NetworkCm02Action*>(var->get_id());
- action->lat_current_ += delta;
- action->sharing_penalty_ += delta;
- if (action->get_user_bound() < 0 && NetworkModel::cfg_tcp_gamma > 0)
- get_model()->get_maxmin_system()->update_variable_bound(action->get_variable(), NetworkModel::cfg_tcp_gamma /
- (2.0 * action->lat_current_));
- else if (NetworkModel::cfg_tcp_gamma > 0) {
- get_model()->get_maxmin_system()->update_variable_bound(
- action->get_variable(),
- std::min(action->get_user_bound(), NetworkModel::cfg_tcp_gamma / (2.0 * action->lat_current_)));
- }
- if (NetworkModel::cfg_tcp_gamma == 0 ||
- action->get_user_bound() < NetworkModel::cfg_tcp_gamma / (2.0 * action->lat_current_)) {
- XBT_DEBUG("Flow is limited BYBANDWIDTH");
- } else {
- XBT_DEBUG("Flow is limited BYLATENCY, latency of flow is %f", action->lat_current_);
- }
-
- if (not action->is_suspended())
- get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
- }
-}
-
-/**********
- * Action *
- **********/
-
-void NetworkCm02Action::update_remains_lazy(double now)
-{
- if (not is_running())
- return;
-
- double delta = now - get_last_update();
-
- if (get_remains_no_update() > 0) {
- XBT_DEBUG("Updating action(%p): remains was %f, last_update was: %f", this, get_remains_no_update(),
- get_last_update());
- update_remains(get_last_value() * delta);
-
- XBT_DEBUG("Updating action(%p): remains is now %f", this, get_remains_no_update());
- }
-
- update_max_duration(delta);
-
- if ((get_remains_no_update() <= 0 && (get_variable()->get_penalty() > 0)) ||
- ((get_max_duration() != NO_MAX_DURATION) && (get_max_duration() <= 0))) {
- finish(Action::State::FINISHED);
- get_model()->get_action_heap().remove(this);
- }
-
- set_last_update();
- set_last_value(get_rate());
-}
-
-} // namespace simgrid::kernel::resource
