X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/6c56800bdad43cabb6c870c9163bbeea694d6692..952402db6d0f3eade16684d4b044c4ed5282abef:/src/surf/ptask_L07.cpp diff --git a/src/surf/ptask_L07.cpp b/src/surf/ptask_L07.cpp deleted file mode 100644 index b6c4e5db89..0000000000 --- a/src/surf/ptask_L07.cpp +++ /dev/null @@ -1,439 +0,0 @@ -/* Copyright (c) 2007-2021. 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 -#include -#include - -#include "src/kernel/EngineImpl.hpp" -#include "src/kernel/resource/profile/Event.hpp" -#include "src/surf/ptask_L07.hpp" - -#include - -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_host); -XBT_LOG_EXTERNAL_CATEGORY(xbt_cfg); - -/**************************************/ -/*** Resource Creation & Destruction **/ -/**************************************/ -void surf_host_model_init_ptask_L07() -{ - XBT_CINFO(xbt_cfg, "Switching to the L07 model to handle parallel tasks."); - - auto host_model = std::make_shared("Host_Ptask"); - auto* engine = simgrid::kernel::EngineImpl::get_instance(); - engine->add_model(host_model); - engine->get_netzone_root()->set_host_model(host_model); -} - -namespace simgrid { -namespace kernel { -namespace resource { - -HostL07Model::HostL07Model(const std::string& name) : HostModel(name) -{ - auto* maxmin_system = new lmm::FairBottleneck(true /* selective update */); - set_maxmin_system(maxmin_system); - - auto net_model = std::make_shared("Network_Ptask", this, maxmin_system); - auto engine = EngineImpl::get_instance(); - engine->add_model(net_model); - engine->get_netzone_root()->set_network_model(net_model); - - auto cpu_model = std::make_shared("Cpu_Ptask", this, maxmin_system); - engine->add_model(cpu_model); - engine->get_netzone_root()->set_cpu_pm_model(cpu_model); -} - -CpuL07Model::CpuL07Model(const std::string& name, HostL07Model* hmodel, lmm::System* sys) - : CpuModel(name), hostModel_(hmodel) -{ - set_maxmin_system(sys); -} - -CpuL07Model::~CpuL07Model() -{ - set_maxmin_system(nullptr); -} - -NetworkL07Model::NetworkL07Model(const std::string& name, HostL07Model* hmodel, lmm::System* sys) - : NetworkModel(name), hostModel_(hmodel) -{ - set_maxmin_system(sys); - loopback_ = create_link("__loopback__", {simgrid::config::get_value("network/loopback-bw")}); - loopback_->set_sharing_policy(s4u::Link::SharingPolicy::FATPIPE, {}); - loopback_->set_latency(simgrid::config::get_value("network/loopback-lat")); - loopback_->seal(); -} - -NetworkL07Model::~NetworkL07Model() -{ - set_maxmin_system(nullptr); -} - -double HostL07Model::next_occurring_event(double now) -{ - double min = HostModel::next_occurring_event_full(now); - for (Action const& action : *get_started_action_set()) { - const auto& net_action = static_cast(action); - if (net_action.get_latency() > 0 && (min < 0 || net_action.get_latency() < min)) { - min = net_action.get_latency(); - XBT_DEBUG("Updating min with %p (start %f): %f", &net_action, net_action.get_start_time(), min); - } - } - XBT_DEBUG("min value: %f", min); - - return min; -} - -void HostL07Model::update_actions_state(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 - if (action.get_latency() > 0) { - if (action.get_latency() > delta) { - action.update_latency(delta, sg_surf_precision); - } else { - action.set_latency(0.0); - } - if ((action.get_latency() <= 0.0) && (action.is_suspended() == 0)) { - action.updateBound(); - get_maxmin_system()->update_variable_penalty(action.get_variable(), 1.0); - action.set_last_update(); - } - } - XBT_DEBUG("Action (%p) : remains (%g) updated by %g.", &action, action.get_remains(), action.get_rate() * delta); - action.update_remains(action.get_rate() * delta); - action.update_max_duration(delta); - - XBT_DEBUG("Action (%p) : remains (%g).", &action, action.get_remains()); - - /* In the next if cascade, the action can be finished either because: - * - The amount of remaining work reached 0 - * - The max duration was reached - * If it's not done, it may have failed. - */ - - 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); - continue; - } - - /* Need to check that none of the model has failed */ - int i = 0; - const lmm::Constraint* cnst = action.get_variable()->get_constraint(i); - while (cnst != nullptr) { - i++; - const Resource* constraint_id = cnst->get_id(); - if (not constraint_id->is_on()) { - XBT_DEBUG("Action (%p) Failed!!", &action); - action.finish(Action::State::FAILED); - break; - } - cnst = action.get_variable()->get_constraint(i); - } - } -} - -CpuAction* HostL07Model::execute_parallel(const std::vector& host_list, const double* flops_amount, - const double* bytes_amount, double rate) -{ - return new L07Action(this, host_list, flops_amount, bytes_amount, rate); -} - -L07Action::L07Action(Model* model, const std::vector& host_list, const double* flops_amount, - const double* bytes_amount, double rate) - : CpuAction(model, 1.0, false), computationAmount_(flops_amount), communicationAmount_(bytes_amount), rate_(rate) -{ - size_t link_nb = 0; - size_t used_host_nb = 0; /* Only the hosts with something to compute (>0 flops) are counted) */ - double latency = 0.0; - this->set_last_update(); - - hostList_.insert(hostList_.end(), host_list.begin(), host_list.end()); - - if (flops_amount != nullptr) - used_host_nb += std::count_if(flops_amount, flops_amount + host_list.size(), [](double x) { return x > 0.0; }); - - /* Compute the number of affected resources... */ - if (bytes_amount != nullptr) { - std::unordered_set affected_links; - - for (size_t k = 0; k < host_list.size() * host_list.size(); k++) { - if (bytes_amount[k] <= 0) - continue; - - double lat = 0.0; - std::vector route; - hostList_[k / host_list.size()]->route_to(hostList_[k % host_list.size()], route, &lat); - latency = std::max(latency, lat); - - for (auto const& link : route) - affected_links.insert(link->get_cname()); - } - - link_nb = affected_links.size(); - } - - XBT_DEBUG("Creating a parallel task (%p) with %zu hosts and %zu unique links.", this, host_list.size(), link_nb); - latency_ = latency; - - set_variable( - model->get_maxmin_system()->variable_new(this, 1.0, (rate > 0 ? rate : -1.0), host_list.size() + link_nb)); - - if (latency_ > 0) - model->get_maxmin_system()->update_variable_penalty(get_variable(), 0.0); - - /* Expand it for the CPUs even if there is nothing to compute, to make sure that it gets expended even if there is no - * communication either */ - for (size_t i = 0; i < host_list.size(); i++) { - model->get_maxmin_system()->expand(host_list[i]->get_cpu()->get_constraint(), get_variable(), - (flops_amount == nullptr ? 0.0 : flops_amount[i])); - } - - if (bytes_amount != nullptr) { - for (size_t k = 0; k < host_list.size() * host_list.size(); k++) { - if (bytes_amount[k] <= 0.0) - continue; - std::vector route; - hostList_[k / host_list.size()]->route_to(hostList_[k % host_list.size()], route, nullptr); - - for (auto const& link : route) - model->get_maxmin_system()->expand_add(link->get_constraint(), this->get_variable(), bytes_amount[k]); - } - } - - if (link_nb + used_host_nb == 0) { - this->set_cost(1.0); - this->set_remains(0.0); - } - /* finally calculate the initial bound value */ - updateBound(); -} - -Action* NetworkL07Model::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate) -{ - std::vector host_list = {src, dst}; - const auto* flops_amount = new double[2](); - auto* bytes_amount = new double[4](); - - bytes_amount[1] = size; - - Action* res = hostModel_->execute_parallel(host_list, flops_amount, bytes_amount, rate); - static_cast(res)->free_arrays_ = true; - return res; -} - -CpuImpl* CpuL07Model::create_cpu(s4u::Host* host, const std::vector& speed_per_pstate) -{ - return (new CpuL07(host, speed_per_pstate))->set_model(this); -} - -LinkImpl* NetworkL07Model::create_link(const std::string& name, const std::vector& bandwidths) -{ - xbt_assert(bandwidths.size() == 1, "Non WIFI link must have only 1 bandwidth."); - auto link = new LinkL07(name, bandwidths[0], get_maxmin_system()); - link->set_model(this); - return link; -} - -LinkImpl* NetworkL07Model::create_wifi_link(const std::string& name, const std::vector& bandwidths) -{ - THROW_UNIMPLEMENTED; -} - -/************ - * Resource * - ************/ - -CpuAction* CpuL07::execution_start(double size, double user_bound) -{ - std::vector host_list = {get_iface()}; - xbt_assert(user_bound <= 0, "User bound not supported by ptask model"); - - auto* flops_amount = new double[host_list.size()](); - flops_amount[0] = size; - - CpuAction* res = - static_cast(get_model())->hostModel_->execute_parallel(host_list, flops_amount, nullptr, -1); - static_cast(res)->free_arrays_ = true; - return res; -} - -CpuAction* CpuL07::sleep(double duration) -{ - auto* action = static_cast(execution_start(1.0, -1)); - action->set_max_duration(duration); - action->set_suspend_state(Action::SuspendStates::SLEEPING); - get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), 0.0); - - return action; -} - -/** @brief take into account changes of speed (either load or max) */ -void CpuL07::on_speed_change() -{ - const lmm::Element* elem = nullptr; - - get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), get_core_count() * speed_.peak * speed_.scale); - - while (const auto* var = get_constraint()->get_variable(&elem)) { - auto* action = static_cast(var->get_id()); - action->updateBound(); - } - - CpuImpl::on_speed_change(); -} - -LinkL07::LinkL07(const std::string& name, double bandwidth, lmm::System* system) : LinkImpl(name) -{ - this->set_constraint(system->constraint_new(this, bandwidth)); - bandwidth_.peak = bandwidth; -} - -void CpuL07::apply_event(profile::Event* triggered, double value) -{ - XBT_DEBUG("Updating cpu %s (%p) with value %g", get_cname(), this, value); - if (triggered == speed_.event) { - speed_.scale = value; - on_speed_change(); - tmgr_trace_event_unref(&speed_.event); - - } else if (triggered == get_state_event()) { - if (value > 0) { - if (not is_on()) { - XBT_VERB("Restart actors on host %s", get_iface()->get_cname()); - get_iface()->turn_on(); - } - } else - get_iface()->turn_off(); - - unref_state_event(); - } else { - xbt_die("Unknown event!\n"); - } -} - -void LinkL07::apply_event(profile::Event* triggered, double value) -{ - XBT_DEBUG("Updating link %s (%p) with value=%f", get_cname(), this, value); - 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"); - } -} - -void LinkL07::set_bandwidth(double value) -{ - bandwidth_.peak = value; - LinkImpl::on_bandwidth_change(); - - get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), bandwidth_.peak * bandwidth_.scale); -} - -void LinkL07::set_latency(double value) -{ - latency_check(value); - const lmm::Element* elem = nullptr; - - latency_.peak = value; - while (const auto* var = get_constraint()->get_variable(&elem)) { - auto* action = static_cast(var->get_id()); - action->updateBound(); - } -} -LinkL07::~LinkL07() = default; - -/********** - * Action * - **********/ - -L07Action::~L07Action() -{ - if (free_arrays_) { - delete[] computationAmount_; - delete[] communicationAmount_; - } -} - -double L07Action::calculateNetworkBound() -{ - double lat_current = 0.0; - double lat_bound = std::numeric_limits::max(); - - size_t host_count = hostList_.size(); - - if (communicationAmount_ == nullptr) { - return lat_bound; - } - - for (size_t i = 0; i < host_count; i++) { - for (size_t j = 0; j < host_count; j++) { - if (communicationAmount_[i * host_count + j] > 0) { - double lat = 0.0; - std::vector route; - hostList_.at(i)->route_to(hostList_.at(j), route, &lat); - - lat_current = std::max(lat_current, lat * communicationAmount_[i * host_count + j]); - } - } - } - if (lat_current > 0) { - lat_bound = NetworkModel::cfg_tcp_gamma / (2.0 * lat_current); - } - return lat_bound; -} - -double L07Action::calculateCpuBound() -{ - double cpu_bound = std::numeric_limits::max(); - - if (computationAmount_ == nullptr) { - return cpu_bound; - } - - for (size_t i = 0; i < hostList_.size(); i++) { - if (computationAmount_[i] > 0) { - cpu_bound = std::min(cpu_bound, hostList_[i]->get_cpu()->get_speed(1.0) * - hostList_[i]->get_cpu()->get_speed_ratio() / computationAmount_[i]); - } - } - return cpu_bound; -} - -void L07Action::updateBound() -{ - double bound = std::min(calculateNetworkBound(), calculateCpuBound()); - - XBT_DEBUG("action (%p) : bound = %g", this, bound); - - /* latency has been paid (or no latency), we can set the appropriate bound for multicore or network limit */ - if ((bound < std::numeric_limits::max()) && (latency_ <= 0.0)) { - if (rate_ < 0) - get_model()->get_maxmin_system()->update_variable_bound(get_variable(), bound); - else - get_model()->get_maxmin_system()->update_variable_bound(get_variable(), std::min(rate_, bound)); - } -} - -} // namespace resource -} // namespace kernel -} // namespace simgrid