X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/97e2219ed6c0e511f6165460cec79afadf42f589..952402db6d0f3eade16684d4b044c4ed5282abef:/src/surf/network_cm02.cpp diff --git a/src/surf/network_cm02.cpp b/src/surf/network_cm02.cpp deleted file mode 100644 index 8d1b395fe7..0000000000 --- a/src/surf/network_cm02.cpp +++ /dev/null @@ -1,588 +0,0 @@ -/* Copyright (c) 2013-2022. 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 -#include - -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_network); - -/*********** - * Options * - ***********/ -static simgrid::config::Flag cfg_network_solver("network/solver", - "Set linear equations solver used by network model", - "maxmin", &simgrid::kernel::lmm::System::validate_solver); - -double sg_latency_factor = 1.0; /* default value; can be set by model or from command line */ -double sg_bandwidth_factor = 1.0; /* default value; can be set by model or from command line */ -double sg_weight_S_parameter = 0.0; /* default value; can be set by model or from command line */ - -/************************************************************************/ -/* New 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}, */ -/* } */ -void surf_network_model_init_LegrandVelho() -{ - auto net_model = std::make_shared("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("network/latency-factor", 13.01); - simgrid::config::set_default("network/bandwidth-factor", 0.97); - simgrid::config::set_default("network/weight-S", 20537); -} - -/***************************************************************************/ -/* The nice 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} */ -/* } */ -void surf_network_model_init_CM02() -{ - simgrid::config::set_default("network/latency-factor", 1.0); - simgrid::config::set_default("network/bandwidth-factor", 1.0); - simgrid::config::set_default("network/weight-S", 0.0); - - auto net_model = std::make_shared("Network_CM02"); - auto* engine = simgrid::kernel::EngineImpl::get_instance(); - engine->add_model(net_model); - engine->get_netzone_root()->set_network_model(net_model); -} - -namespace simgrid { -namespace kernel { -namespace resource { - -NetworkCm02Model::NetworkCm02Model(const std::string& name) : NetworkModel(name) -{ - std::string optim = config::get_value("network/optim"); - bool select = config::get_value("network/maxmin-selective-update"); - - if (optim == "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, select)); - - loopback_ = create_link("__loopback__", {config::get_value("network/loopback-bw")}); - loopback_->set_sharing_policy(s4u::Link::SharingPolicy::FATPIPE, {}); - loopback_->set_latency(config::get_value("network/loopback-lat")); - loopback_->seal(); -} - -void NetworkCm02Model::check_lat_factor_cb() -{ - if (not simgrid::config::is_default("network/latency-factor")) { - throw std::invalid_argument( - "NetworkModelIntf: Cannot mix network/latency-factor and callback configuration. Choose only one of them."); - } -} - -void NetworkCm02Model::check_bw_factor_cb() -{ - if (not simgrid::config::is_default("network/bandwidth-factor")) { - throw std::invalid_argument( - "NetworkModelIntf: Cannot mix network/bandwidth-factor and callback configuration. Choose only one of them."); - } -} - -void NetworkCm02Model::set_lat_factor_cb(const std::function& cb) -{ - if (not cb) - throw std::invalid_argument("NetworkModelIntf: Invalid callback"); - check_lat_factor_cb(); - - lat_factor_cb_ = cb; -} - -void NetworkCm02Model::set_bw_factor_cb(const std::function& cb) -{ - if (not cb) - throw std::invalid_argument("NetworkModelIntf: Invalid callback"); - check_bw_factor_cb(); - - bw_factor_cb_ = cb; -} - -StandardLinkImpl* NetworkCm02Model::create_link(const std::string& name, const std::vector& 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& 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_surf_precision)) { - auto* action = static_cast(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(*it); - ++it; // increment iterator here since the following calls to action.finish() may invalidate it - XBT_DEBUG("Something happened to action %p", &action); - double deltap = delta; - if (action.latency_ > 0) { - if (action.latency_ > deltap) { - double_update(&action.latency_, deltap, sg_surf_precision); - deltap = 0.0; - } else { - double_update(&deltap, action.latency_, sg_surf_precision); - 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& route, - const std::vector& 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(route.front()); - } - if (route.size() > 1 && route.back()->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) { - dst_wifi_link = static_cast(route.back()); - } - - /* WI-FI links needs special treatment, do it here */ - if (src_wifi_link != nullptr) { - /* In case of 0Mbps data rate, don't consider it in the LMM */ - 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& 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(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(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& route, - std::vector& back_route, - std::unordered_set& 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& route, - const std::unordered_set& netzones, - double rate) -{ - std::vector s4u_route; - std::unordered_set s4u_netzones; - - /* transform data to user structures if necessary */ - if (lat_factor_cb_ || bw_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; - if (bw_factor_cb_) { - bw_factor = bw_factor_cb_(size, src, dst, s4u_route, s4u_netzones); - } else { - bw_factor = get_bandwidth_factor(size); - } - 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_; - if (lat_factor_cb_) { - action->latency_ *= lat_factor_cb_(size, src, dst, s4u_route, s4u_netzones); - } else { - action->latency_ *= get_latency_factor(size); - } -} - -void NetworkCm02Model::comm_action_set_variable(NetworkCm02Action* action, const std::vector& route, - const std::vector& back_route) -{ - size_t constraints_per_variable = route.size(); - constraints_per_variable += back_route.size(); - - 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 / (2.0 * action->lat_current_) : -1.0); - } else { - get_maxmin_system()->update_variable_bound( - action->get_variable(), (action->lat_current_ > 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) -{ - double latency = 0.0; - std::vector back_route; - std::vector route; - std::unordered_set 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 (sg_weight_S_parameter > 0) { - action->sharing_penalty_ = std::accumulate(route.begin(), route.end(), action->sharing_penalty_, - [](double total, StandardLinkImpl* const& link) { - return total + sg_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); - - /* 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 (sg_weight_S_parameter > 0) { - double delta = sg_weight_S_parameter / (bandwidth_.peak * bandwidth_.scale) - - sg_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(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(var->get_id()); - action->lat_current_ += delta; - action->sharing_penalty_ += delta; - if (action->get_user_bound() < 0) - get_model()->get_maxmin_system()->update_variable_bound(action->get_variable(), NetworkModel::cfg_tcp_gamma / - (2.0 * action->lat_current_)); - else { - 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 (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 resource -} // namespace kernel -} // namespace simgrid