/* 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 <algorithm>
-#include <numeric>
-
#include "network_cm02.hpp"
#include "simgrid/s4u/Host.hpp"
#include "simgrid/sg_config.hpp"
+#include "src/kernel/resource/profile/Event.hpp"
#include "src/surf/surf_interface.hpp"
#include "surf/surf.hpp"
+#include <algorithm>
+#include <numeric>
+
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
double sg_latency_factor = 1.0; /* default value; can be set by model or from command line */
surf_network_model = new simgrid::kernel::resource::NetworkCm02Model();
}
-/***************************************************************************/
-/* The models from Steven H. Low */
-/***************************************************************************/
-/* @article{Low03, */
-/* author={Steven H. Low}, */
-/* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
-/* year={2003}, */
-/* journal={{IEEE/ACM} Transactions on Networking}, */
-/* volume={11}, number={4}, */
-/* } */
-void surf_network_model_init_Reno()
-{
- xbt_assert(surf_network_model == nullptr, "Cannot set the network model twice");
-
- namespace lmm = simgrid::kernel::lmm;
- lmm::Lagrange::set_default_protocol_function(lmm::func_reno_f, lmm::func_reno_fp, lmm::func_reno_fpi);
-
- simgrid::config::set_default<double>("network/latency-factor", 13.01);
- simgrid::config::set_default<double>("network/bandwidth-factor", 0.97);
- simgrid::config::set_default<double>("network/weight-S", 20537);
-
- surf_network_model = new simgrid::kernel::resource::NetworkCm02Model(&simgrid::kernel::lmm::make_new_lagrange_system);
-}
-
-
-void surf_network_model_init_Reno2()
-{
- xbt_assert(surf_network_model == nullptr, "Cannot set the network model twice");
-
- namespace lmm = simgrid::kernel::lmm;
- lmm::Lagrange::set_default_protocol_function(lmm::func_reno2_f, lmm::func_reno2_fp, lmm::func_reno2_fpi);
-
- simgrid::config::set_default<double>("network/latency-factor", 13.01);
- simgrid::config::set_default<double>("network/bandwidth-factor", 0.97);
- simgrid::config::set_default<double>("network/weight-S", 20537);
-
- surf_network_model = new simgrid::kernel::resource::NetworkCm02Model(&simgrid::kernel::lmm::make_new_lagrange_system);
-}
-
-void surf_network_model_init_Vegas()
-{
- xbt_assert(surf_network_model == nullptr, "Cannot set the network model twice");
-
- namespace lmm = simgrid::kernel::lmm;
- lmm::Lagrange::set_default_protocol_function(lmm::func_vegas_f, lmm::func_vegas_fp, lmm::func_vegas_fpi);
-
- simgrid::config::set_default<double>("network/latency-factor", 13.01);
- simgrid::config::set_default<double>("network/bandwidth-factor", 0.97);
- simgrid::config::set_default<double>("network/weight-S", 20537);
-
- surf_network_model = new simgrid::kernel::resource::NetworkCm02Model(&simgrid::kernel::lmm::make_new_lagrange_system);
-}
-
namespace simgrid {
namespace kernel {
namespace resource {
}
set_maxmin_system(make_new_lmm_system(select));
- loopback_ = NetworkCm02Model::create_link("__loopback__", 498000000, 0.000015, s4u::Link::SharingPolicy::FATPIPE);
+ loopback_ = NetworkCm02Model::create_link("__loopback__", std::vector<double>(1, 498000000), 0.000015,
+ s4u::Link::SharingPolicy::FATPIPE);
}
-LinkImpl* NetworkCm02Model::create_link(const std::string& name, double bandwidth, double latency,
+LinkImpl* NetworkCm02Model::create_link(const std::string& name, const std::vector<double>& bandwidths, double latency,
s4u::Link::SharingPolicy policy)
{
- return new NetworkCm02Link(this, name, bandwidth, latency, policy, get_maxmin_system());
+ if (policy == s4u::Link::SharingPolicy::WIFI) {
+ return (new NetworkWifiLink(this, name, bandwidths, policy, get_maxmin_system()));
+ }
+ xbt_assert(bandwidths.size() == 1, "Non WIFI links must use only 1 bandwidth.");
+ return new NetworkCm02Link(this, name, bandwidths[0], latency, policy, get_maxmin_system());
}
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)) {
- NetworkCm02Action* action = static_cast<NetworkCm02Action*>(get_action_heap().pop());
+ 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_weight(action->get_variable(), action->weight_);
+ get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
get_action_heap().remove(action);
action->set_last_update();
}
}
-void NetworkCm02Model::update_actions_state_full(double now, double delta)
+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());) {
NetworkCm02Action& action = static_cast<NetworkCm02Action&>(*it);
action.latency_ = 0.0;
}
if (action.latency_ <= 0.0 && not action.is_suspended())
- get_maxmin_system()->update_variable_weight(action.get_variable(), action.weight_);
+ get_maxmin_system()->update_variable_penalty(action.get_variable(), action.sharing_penalty_);
}
if (not action.get_variable()->get_number_of_constraint()) {
if (action.get_max_duration() != NO_MAX_DURATION)
action.update_max_duration(delta);
- if (((action.get_remains() <= 0) && (action.get_variable()->get_weight() > 0)) ||
+ 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);
}
std::any_of(back_route.begin(), back_route.end(), [](const LinkImpl* link) { return not link->is_on(); });
}
- NetworkCm02Action *action = new NetworkCm02Action(this, size, failed);
- action->weight_ = latency;
+ auto* action = new NetworkCm02Action(this, size, failed);
+ action->sharing_penalty_ = latency;
action->latency_ = latency;
action->rate_ = rate;
+
if (get_update_algorithm() == Model::UpdateAlgo::LAZY) {
action->set_last_update();
}
if (sg_weight_S_parameter > 0) {
- action->weight_ =
- std::accumulate(route.begin(), route.end(), action->weight_, [](double total, LinkImpl* const& link) {
+ action->sharing_penalty_ =
+ std::accumulate(route.begin(), route.end(), action->sharing_penalty_, [](double total, LinkImpl* const& link) {
return total + sg_weight_S_parameter / link->get_bandwidth();
});
}
: action->rate_);
}
- for (auto const& link : route)
- get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), 1.0);
+ for (auto const& link : route) {
+ // Handle WIFI links
+ if (link->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
+ NetworkWifiLink* wifi_link = static_cast<NetworkWifiLink*>(link);
+
+ double src_rate = wifi_link->get_host_rate(src);
+ double dst_rate = wifi_link->get_host_rate(dst);
+ xbt_assert(
+ !(src_rate == -1 && dst_rate == -1),
+ "Some Stations are not associated to any Access Point. Make sure to call set_host_rate on all Stations.");
+ if (src_rate != -1)
+ get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), 1.0 / src_rate);
+ else
+ get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), 1.0 / dst_rate);
+
+ } else {
+ 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");
- for (auto const& link : back_route)
- get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), .05);
+ bool wifi_dst_assigned = false; // Used by wifi crosstraffic
+ for (auto const& link : back_route) {
+ if (link->get_sharing_policy() == s4u::Link::SharingPolicy::WIFI) {
+ NetworkWifiLink* wifi_link = static_cast<NetworkWifiLink*>(link);
+ /**
+ * For wifi links we should add 0.05/rate.
+ * However since we are using the "back_route" we should encounter in
+ * the first place the dst wifi link.
+ */
+ if (!wifi_dst_assigned && (wifi_link->get_host_rate(dst) != -1)) {
+ get_maxmin_system()->expand(link->get_constraint(), action->get_variable(),
+ .05 / wifi_link->get_host_rate(dst));
+ wifi_dst_assigned = true;
+ } else {
+ get_maxmin_system()->expand(link->get_constraint(), action->get_variable(),
+ .05 / wifi_link->get_host_rate(src));
+ }
+ } else {
+ get_maxmin_system()->expand(link->get_constraint(), action->get_variable(), .05);
+ }
+ }
// Change concurrency_share here, if you want that cross-traffic is included in the SURF concurrency
// (You would also have to change simgrid::kernel::lmm::Element::get_concurrency())
}
XBT_OUT();
- simgrid::s4u::Link::on_communicate(action, src, dst);
+ simgrid::s4u::Link::on_communicate(*action, src, dst);
return action;
}
if (value > 0)
turn_on();
else {
- kernel::lmm::Variable* var = nullptr;
- const kernel::lmm::Element* elem = nullptr;
- double now = surf_get_clock();
-
turn_off();
- while ((var = get_constraint()->get_variable(&elem))) {
- Action* action = static_cast<Action*>(var->get_id());
-
- if (action->get_state() == Action::State::INITED || action->get_state() == Action::State::STARTED) {
- action->set_finish_time(now);
- action->set_state(Action::State::FAILED);
- }
- }
}
tmgr_trace_event_unref(&state_event_);
} else {
const kernel::lmm::Element* nextelem = nullptr;
int numelem = 0;
while ((var = get_constraint()->get_variable_safe(&elem, &nextelem, &numelem))) {
- NetworkCm02Action* action = static_cast<NetworkCm02Action*>(var->get_id());
- action->weight_ += delta;
+ auto* action = static_cast<NetworkCm02Action*>(var->get_id());
+ action->sharing_penalty_ += delta;
if (not action->is_suspended())
- get_model()->get_maxmin_system()->update_variable_weight(action->get_variable(), action->weight_);
+ get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
}
}
}
latency_.peak = value;
while ((var = get_constraint()->get_variable_safe(&elem, &nextelem, &numelem))) {
- NetworkCm02Action* action = static_cast<NetworkCm02Action*>(var->get_id());
+ auto* action = static_cast<NetworkCm02Action*>(var->get_id());
action->lat_current_ += delta;
- action->weight_ += delta;
+ action->sharing_penalty_ += delta;
if (action->rate_ < 0)
get_model()->get_maxmin_system()->update_variable_bound(action->get_variable(), NetworkModel::cfg_tcp_gamma /
(2.0 * action->lat_current_));
}
}
if (not action->is_suspended())
- get_model()->get_maxmin_system()->update_variable_weight(action->get_variable(), action->weight_);
+ get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
}
}
+NetworkWifiLink::NetworkWifiLink(NetworkCm02Model* model, const std::string& name, std::vector<double> bandwidths,
+ s4u::Link::SharingPolicy policy, lmm::System* system)
+ : NetworkCm02Link(
+ model, name, 1 / sg_bandwidth_factor, 0, policy,
+ system) // Since link uses bw*sg_bandwidth_factor we should divide by sg_bw_factor to ensure that we have 1 as
+ // a bound in the lmm system
+{
+ for (auto bandwidth : bandwidths) {
+ bandwidths_.push_back({bandwidth, 1.0, nullptr});
+ }
+}
+
+void NetworkWifiLink::set_host_rate(s4u::Host* host, int rate_level)
+{
+ auto insert_done = host_rates_.insert(std::make_pair(host->get_name(), rate_level));
+ if (insert_done.second == false)
+ insert_done.first->second = rate_level;
+}
+
+double NetworkWifiLink::get_host_rate(sg_host_t host)
+{
+ std::map<xbt::string, int>::iterator host_rates_it;
+ host_rates_it = host_rates_.find(host->get_name());
+
+ if (host_rates_it == host_rates_.end())
+ return -1;
+
+ int rate_id = host_rates_it->second;
+ xbt_assert(rate_id >= 0 && rate_id < (int)bandwidths_.size(), "Host \"%s\" has an invalid rate \"%d\"",
+ host->get_name().c_str(), rate_id);
+
+ Metric rate = bandwidths_[rate_id];
+ return rate.peak * rate.scale;
+}
+
+s4u::Link::SharingPolicy NetworkWifiLink::get_sharing_policy()
+{
+ return s4u::Link::SharingPolicy::WIFI;
+}
+
/**********
* Action *
**********/
void NetworkCm02Action::update_remains_lazy(double now)
{
- if (suspended_ != Action::SuspendStates::not_suspended)
+ if (not is_running())
return;
- double delta = now - get_last_update();
+ 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(),
update_max_duration(delta);
- if ((get_remains_no_update() <= 0 && (get_variable()->get_weight() > 0)) ||
+ 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_value(get_variable()->get_value());
}
-}
-}
+} // namespace resource
+} // namespace kernel
} // namespace simgrid
