threading on the next generation function + working on debug
parent
18ef85c1ce
commit
58b3ed02c3
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@ -1,5 +1,5 @@
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cmake_minimum_required(VERSION 3.25)
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project(blt-gp VERSION 0.1.4)
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project(blt-gp VERSION 0.1.5)
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include(CTest)
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@ -39,7 +39,7 @@ blt::gp::prog_config_t config = blt::gp::prog_config_t()
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.set_mutation_chance(0.1)
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.set_reproduction_chance(0)
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.set_max_generations(50)
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.set_pop_size(50000)
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.set_pop_size(500)
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.set_thread_count(0);
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blt::gp::type_provider type_system;
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@ -117,15 +117,15 @@ int main()
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program.set_operations(builder.build());
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BLT_DEBUG("Generate Initial Population");
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program.generate_population(type_system.get_type<float>().id(), fitness_function);
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auto sel = blt::gp::select_fitness_proportionate_t{};
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program.generate_population(type_system.get_type<float>().id(), fitness_function, sel, sel, sel);
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BLT_DEBUG("Begin Generation Loop");
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while (!program.should_terminate())
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{
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BLT_TRACE("------------{Begin Generation %ld}------------", program.get_current_generation());
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BLT_START_INTERVAL("Symbolic Regression", "Gen");
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auto sel = blt::gp::select_fitness_proportionate_t{};
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program.create_next_generation(sel, sel, sel);
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program.create_next_generation();
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BLT_END_INTERVAL("Symbolic Regression", "Gen");
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BLT_TRACE("Move to next generation");
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BLT_START_INTERVAL("Symbolic Regression", "Fitness");
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@ -264,19 +264,12 @@ namespace blt::gp
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system(system), seed(seed), config(config)
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{ create_threads(); }
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template<typename Crossover, typename Mutation, typename Reproduction, typename CreationFunc = decltype(default_next_pop_creator<Crossover, Mutation, Reproduction>)>
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void create_next_generation(Crossover&& crossover_selection, Mutation&& mutation_selection, Reproduction&& reproduction_selection,
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CreationFunc& func = default_next_pop_creator<Crossover, Mutation, Reproduction>)
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void create_next_generation()
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{
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// should already be empty
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next_pop.clear();
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crossover_selection.pre_process(*this, current_pop, current_stats);
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mutation_selection.pre_process(*this, current_pop, current_stats);
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reproduction_selection.pre_process(*this, current_pop, current_stats);
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auto args = get_selector_args();
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func(args, std::forward<Crossover>(crossover_selection), std::forward<Mutation>(mutation_selection),
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std::forward<Reproduction>(reproduction_selection));
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thread_helper.next_gen_left.store(config.population_size, std::memory_order_release);
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(*thread_execution_service)(0);
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}
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void evaluate_fitness()
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@ -294,8 +287,10 @@ namespace blt::gp
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*
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* NOTE: 0 is considered the best, in terms of standardized fitness
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*/
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template<typename FitnessFunc>
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void generate_population(type_id root_type, FitnessFunc& fitness_function, bool eval_fitness_now = true)
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template<typename FitnessFunc, typename Crossover, typename Mutation, typename Reproduction, typename CreationFunc = decltype(default_next_pop_creator<Crossover, Mutation, Reproduction>)>
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void generate_population(type_id root_type, FitnessFunc& fitness_function,
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Crossover& crossover_selection, Mutation& mutation_selection, Reproduction& reproduction_selection,
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CreationFunc& func = default_next_pop_creator<Crossover, Mutation, Reproduction>, bool eval_fitness_now = true)
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{
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using LambdaReturn = typename decltype(blt::meta::lambda_helper(fitness_function))::Return;
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current_pop = config.pop_initializer.get().generate(
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@ -303,7 +298,10 @@ namespace blt::gp
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if (config.threads == 1)
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{
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BLT_INFO("Starting with single thread variant!");
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thread_execution_service = new std::function([this, &fitness_function](blt::size_t) {
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thread_execution_service = new std::function(
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[this, &fitness_function, &crossover_selection, &mutation_selection, &reproduction_selection, &func](blt::size_t) {
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if (thread_helper.evaluation_left > 0)
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{
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for (const auto& ind : blt::enumerate(current_pop.get_individuals()))
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{
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if constexpr (std::is_same_v<LambdaReturn, bool> || std::is_convertible_v<LambdaReturn, bool>)
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@ -324,12 +322,35 @@ namespace blt::gp
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current_stats.overall_fitness = current_stats.overall_fitness + ind.second.fitness.adjusted_fitness;
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}
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thread_helper.evaluation_left = 0;
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}
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if (thread_helper.next_gen_left > 0)
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{
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static thread_local std::vector<tree_t> new_children;
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new_children.clear();
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auto args = get_selector_args(new_children);
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crossover_selection.pre_process(*this, current_pop, current_stats);
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mutation_selection.pre_process(*this, current_pop, current_stats);
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reproduction_selection.pre_process(*this, current_pop, current_stats);
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perform_elitism(args);
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while (new_children.size() < config.population_size)
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func(args, crossover_selection, mutation_selection, reproduction_selection);
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for (auto& i : new_children)
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next_pop.get_individuals().emplace_back(std::move(i));
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thread_helper.next_gen_left = 0;
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}
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});
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} else
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{
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BLT_INFO("Starting thread execution service!");
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std::scoped_lock lock(thread_helper.thread_function_control);
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thread_execution_service = new std::function([this, &fitness_function](blt::size_t) {
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thread_execution_service = new std::function(
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[this, &fitness_function, &crossover_selection, &mutation_selection, &reproduction_selection, &func](blt::size_t id) {
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thread_helper.barrier.wait();
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if (thread_helper.evaluation_left > 0)
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{
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@ -363,12 +384,14 @@ namespace blt::gp
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auto old_best = current_stats.best_fitness.load(std::memory_order_relaxed);
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while (ind.fitness.adjusted_fitness > old_best &&
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!current_stats.best_fitness.compare_exchange_weak(old_best, ind.fitness.adjusted_fitness,
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std::memory_order_relaxed, std::memory_order_relaxed));
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std::memory_order_relaxed,
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std::memory_order_relaxed));
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auto old_worst = current_stats.worst_fitness.load(std::memory_order_relaxed);
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while (ind.fitness.adjusted_fitness < old_worst &&
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!current_stats.worst_fitness.compare_exchange_weak(old_worst, ind.fitness.adjusted_fitness,
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std::memory_order_relaxed, std::memory_order_relaxed));
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std::memory_order_relaxed,
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std::memory_order_relaxed));
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auto old_overall = current_stats.overall_fitness.load(std::memory_order_relaxed);
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while (!current_stats.overall_fitness.compare_exchange_weak(old_overall,
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@ -380,6 +403,24 @@ namespace blt::gp
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}
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if (thread_helper.next_gen_left > 0)
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{
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static thread_local std::vector<tree_t> new_children;
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new_children.clear();
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auto args = get_selector_args(new_children);
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if (id == 0)
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{
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crossover_selection.pre_process(*this, current_pop, current_stats);
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mutation_selection.pre_process(*this, current_pop, current_stats);
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reproduction_selection.pre_process(*this, current_pop, current_stats);
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perform_elitism(args);
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for (auto& i : new_children)
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next_pop.get_individuals().emplace_back(std::move(i));
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thread_helper.next_gen_left -= new_children.size();
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new_children.clear();
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}
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thread_helper.barrier.wait();
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while (thread_helper.next_gen_left > 0)
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{
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blt::size_t size = 0;
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@ -393,12 +434,16 @@ namespace blt::gp
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std::memory_order::memory_order_relaxed,
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std::memory_order::memory_order_relaxed));
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static thread_local std::vector<tree_t> new_children;
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new_children.clear();
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for (blt::size_t i = begin; i < end; i++)
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{
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func(args, crossover_selection, mutation_selection, reproduction_selection);
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{
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std::scoped_lock lock(thread_helper.thread_generation_lock);
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for (auto& i : new_children)
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{
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if (next_pop.get_individuals().size() < config.population_size)
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next_pop.get_individuals().emplace_back(i);
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}
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}
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}
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}
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@ -605,6 +650,7 @@ namespace blt::gp
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std::vector<std::unique_ptr<std::thread>> threads;
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std::mutex thread_function_control;
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std::mutex thread_generation_lock;
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std::condition_variable thread_function_condition{};
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std::atomic_uint64_t evaluation_left = 0;
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@ -620,9 +666,9 @@ namespace blt::gp
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// for convenience, shouldn't decrease performance too much
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std::atomic<std::function<void(blt::size_t)>*> thread_execution_service = nullptr;
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inline selector_args get_selector_args()
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inline selector_args get_selector_args(std::vector<tree_t>& next_pop_trees)
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{
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return {*this, next_pop, current_pop, current_stats, config, get_random()};
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return {*this, next_pop_trees, current_pop, current_stats, config, get_random()};
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}
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template<typename Return, blt::size_t size, typename Accessor, blt::size_t... indexes>
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@ -637,7 +683,6 @@ namespace blt::gp
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void evaluate_fitness_internal()
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{
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current_stats.clear();
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if (config.threads != 1)
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thread_helper.evaluation_left.store(current_pop.get_individuals().size(), std::memory_order_release);
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(*thread_execution_service)(0);
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@ -31,7 +31,7 @@ namespace blt::gp
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struct selector_args
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{
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gp_program& program;
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population_t& next_pop;
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std::vector<tree_t>& next_pop;
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population_t& current_pop;
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population_stats& current_stats;
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prog_config_t& config;
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@ -70,77 +70,15 @@ namespace blt::gp
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}
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for (blt::size_t i = 0; i < config.elites; i++)
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next_pop.get_individuals().push_back(current_pop.get_individuals()[values[i].first]);
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}
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};
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template<typename Crossover, typename Mutation, typename Reproduction>
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constexpr inline auto proportionate_next_pop_creator = [](
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const selector_args& args, Crossover crossover_selection, Mutation mutation_selection, Reproduction reproduction_selection) {
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auto& [program, next_pop, current_pop, current_stats, config, random] = args;
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double total_prob = config.mutation_chance + config.crossover_chance;
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double crossover_chance = config.crossover_chance / total_prob;
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double mutation_chance = crossover_chance + config.mutation_chance / total_prob;
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perform_elitism(args);
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while (next_pop.get_individuals().size() < config.population_size)
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{
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auto type = random.get_double();
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if (type > crossover_chance && type < mutation_chance)
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{
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// crossover
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auto& p1 = crossover_selection.select(program, current_pop, current_stats);
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auto& p2 = crossover_selection.select(program, current_pop, current_stats);
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auto results = config.crossover.get().apply(program, p1, p2);
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// if crossover fails, we can check for mutation on these guys. otherwise straight copy them into the next pop
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if (results)
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{
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next_pop.get_individuals().emplace_back(std::move(results->child1));
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// annoying check
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if (next_pop.get_individuals().size() < config.population_size)
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next_pop.get_individuals().emplace_back(std::move(results->child2));
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} else
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{
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if (config.try_mutation_on_crossover_failure && random.choice(config.mutation_chance))
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next_pop.get_individuals().emplace_back(std::move(config.mutator.get().apply(program, p1)));
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else
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next_pop.get_individuals().push_back(individual{p1});
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// annoying check.
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if (next_pop.get_individuals().size() < config.population_size)
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{
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if (config.try_mutation_on_crossover_failure && random.choice(config.mutation_chance))
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next_pop.get_individuals().emplace_back(std::move(config.mutator.get().apply(program, p2)));
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else
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next_pop.get_individuals().push_back(individual{p2});
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}
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}
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} else if (type > mutation_chance)
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{
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// mutation
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auto& p = mutation_selection.select(program, current_pop, current_stats);
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next_pop.get_individuals().emplace_back(std::move(config.mutator.get().apply(program, p)));
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} else
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{
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// reproduction
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auto& p = reproduction_selection.select(program, current_pop, current_stats);
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next_pop.get_individuals().push_back(individual{p});
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}
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next_pop.push_back(current_pop.get_individuals()[values[i].first].tree);
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}
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};
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template<typename Crossover, typename Mutation, typename Reproduction>
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constexpr inline auto default_next_pop_creator = [](
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const blt::gp::selector_args& args, Crossover crossover_selection, Mutation mutation_selection, Reproduction reproduction_selection) {
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blt::gp::selector_args& args, Crossover& crossover_selection, Mutation& mutation_selection, Reproduction& reproduction_selection) {
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auto& [program, next_pop, current_pop, current_stats, config, random] = args;
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perform_elitism(args);
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while (next_pop.get_individuals().size() < config.population_size)
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{
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int sel = random.get_i32(0, 3);
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switch (sel)
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{
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@ -157,10 +95,8 @@ namespace blt::gp
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// if crossover fails, we can check for mutation on these guys. otherwise straight copy them into the next pop
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if (results)
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{
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next_pop.get_individuals().emplace_back(std::move(results->child1));
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// annoying check
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if (next_pop.get_individuals().size() < config.population_size)
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next_pop.get_individuals().emplace_back(std::move(results->child2));
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next_pop.push_back(std::move(results->child1));
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next_pop.push_back(std::move(results->child2));
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}
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}
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break;
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@ -169,7 +105,7 @@ namespace blt::gp
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{
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// mutation
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auto& p = mutation_selection.select(program, current_pop, current_stats);
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next_pop.get_individuals().emplace_back(std::move(config.mutator.get().apply(program, p)));
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next_pop.push_back(std::move(config.mutator.get().apply(program, p)));
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}
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break;
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case 2:
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@ -177,12 +113,15 @@ namespace blt::gp
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{
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// reproduction
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auto& p = reproduction_selection.select(program, current_pop, current_stats);
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next_pop.get_individuals().push_back(individual{p});
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next_pop.push_back(p);
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}
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break;
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default:
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#if BLT_DEBUG_LEVEL > 0
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BLT_ABORT("This is not possible!");
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}
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#else
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BLT_UNREACHABLE;
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#endif
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}
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};
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@ -54,37 +54,14 @@ namespace blt::gp
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blt::size_t total_size_bytes = 0;
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blt::size_t total_used_bytes = 0;
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blt::size_t total_remaining_bytes = 0;
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blt::size_t total_no_meta_bytes = 0;
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blt::size_t total_dealloc = 0;
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blt::size_t total_dealloc_used = 0;
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blt::size_t total_dealloc_remaining = 0;
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blt::size_t total_dealloc_no_meta = 0;
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blt::size_t blocks = 0;
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friend std::ostream& operator<<(std::ostream& stream, const size_data_t& data)
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{
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stream << "[";
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stream << data.total_used_bytes << "/";
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stream << data.total_size_bytes << "(";
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stream << (static_cast<double>(data.total_used_bytes) / static_cast<double>(data.total_size_bytes) * 100) << "%), ";
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stream << data.total_used_bytes << "/";
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stream << data.total_no_meta_bytes << "(";
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stream << (static_cast<double>(data.total_used_bytes) / static_cast<double>(data.total_no_meta_bytes) * 100)
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<< "%), (empty space: ";
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stream << data.total_remaining_bytes << ") blocks: " << data.blocks << " || unallocated space: ";
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stream << data.total_dealloc_used << "/";
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stream << data.total_dealloc;
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if (static_cast<double>(data.total_dealloc) > 0)
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stream << "(" << (static_cast<double>(data.total_dealloc_used) / static_cast<double>(data.total_dealloc) * 100) << "%)";
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stream << ", ";
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stream << data.total_dealloc_used << "/";
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stream << data.total_dealloc_no_meta;
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if (data.total_dealloc_no_meta > 0)
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stream << "(" << (static_cast<double>(data.total_dealloc_used) / static_cast<double>(data.total_dealloc_no_meta * 100))
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<< "%)";
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stream << ", (empty space: " << data.total_dealloc_remaining << ")]";
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stream << data.total_used_bytes << " / " << data.total_size_bytes;
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stream << " ("
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<< (data.total_size_bytes != 0 ? (static_cast<double>(data.total_used_bytes) / static_cast<double>(data.total_size_bytes) *
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100) : 0) << "%); space left: " << data.total_remaining_bytes << "]";
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return stream;
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}
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};
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@ -132,6 +109,10 @@ namespace blt::gp
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void insert(const stack_allocator& stack)
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{
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#if BLT_DEBUG_LEVEL > 1
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if (stack.empty())
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BLT_WARN("Insert called on an empty stack!");
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#endif
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if (size_ < stack.bytes_stored + bytes_stored)
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expand(stack.bytes_stored + bytes_stored);
|
||||
std::memcpy(data_ + bytes_stored, stack.data_, stack.bytes_stored);
|
||||
|
|
@ -140,6 +121,12 @@ namespace blt::gp
|
|||
|
||||
void copy_from(const stack_allocator& stack, blt::size_t bytes)
|
||||
{
|
||||
#if BLT_DEBUG_LEVEL > 0
|
||||
if (stack.empty())
|
||||
BLT_WARN("Copy From called on an empty stack");
|
||||
if (bytes == 0)
|
||||
BLT_WARN("Requested 0 bytes to be copied. This seems to be an error!");
|
||||
#endif
|
||||
if (size_ < bytes + bytes_stored)
|
||||
expand(bytes + bytes_stored);
|
||||
std::memcpy(data_ + bytes_stored, stack.data_ + (stack.bytes_stored - bytes), bytes);
|
||||
|
|
@ -148,6 +135,12 @@ namespace blt::gp
|
|||
|
||||
void copy_from(blt::u8* data, blt::size_t bytes)
|
||||
{
|
||||
#if BLT_DEBUG_LEVEL > 0
|
||||
if (data == nullptr)
|
||||
BLT_ABORT("Nullptr provided to copy_from function!");
|
||||
if (bytes == 0)
|
||||
BLT_WARN("Requested 0 bytes to be copied from, nothing will happen.");
|
||||
#endif
|
||||
if (size_ < bytes + bytes_stored)
|
||||
expand(bytes + bytes_stored);
|
||||
std::memcpy(data_ + bytes_stored, data, bytes);
|
||||
|
|
@ -156,6 +149,12 @@ namespace blt::gp
|
|||
|
||||
void copy_to(blt::u8* data, blt::size_t bytes)
|
||||
{
|
||||
#if BLT_DEBUG_LEVEL > 0
|
||||
if (data == nullptr)
|
||||
BLT_ABORT("Nullptr provided to copy_to function!");
|
||||
if (bytes == 0)
|
||||
BLT_WARN("Requested 0 to be copied to, nothing will happen!");
|
||||
#endif
|
||||
std::memcpy(data, data_ + (bytes_stored - bytes), bytes);
|
||||
}
|
||||
|
||||
|
|
@ -174,6 +173,10 @@ namespace blt::gp
|
|||
static_assert(std::is_trivially_copyable_v<NO_REF> && "Type must be bitwise copyable!");
|
||||
static_assert(alignof(NO_REF) <= MAX_ALIGNMENT && "Type alignment must not be greater than the max alignment!");
|
||||
constexpr auto size = aligned_size(sizeof(NO_REF));
|
||||
#if BLT_DEBUG_LEVEL > 0
|
||||
if (bytes_stored < size)
|
||||
BLT_ABORT("Not enough bytes left to pop!");
|
||||
#endif
|
||||
bytes_stored -= size;
|
||||
return *reinterpret_cast<T*>(data_ + bytes_stored);
|
||||
}
|
||||
|
|
@ -184,16 +187,31 @@ namespace blt::gp
|
|||
static_assert(std::is_trivially_copyable_v<NO_REF> && "Type must be bitwise copyable!");
|
||||
static_assert(alignof(NO_REF) <= MAX_ALIGNMENT && "Type alignment must not be greater than the max alignment!");
|
||||
auto size = aligned_size(sizeof(NO_REF)) + bytes;
|
||||
#if BLT_DEBUG_LEVEL > 0
|
||||
if (bytes_stored < size)
|
||||
BLT_ABORT(("Not enough bytes in stack to reference " + std::to_string(size) + " bytes requested but " + std::to_string(bytes) +
|
||||
" bytes stored!").c_str());
|
||||
#endif
|
||||
return *reinterpret_cast<NO_REF*>(data_ + bytes_stored - size);
|
||||
}
|
||||
|
||||
void pop_bytes(blt::size_t bytes)
|
||||
{
|
||||
#if BLT_DEBUG_LEVEL > 0
|
||||
if (bytes_stored < bytes)
|
||||
BLT_ABORT(("Not enough bytes in stack to pop " + std::to_string(bytes) + " bytes requested but " + std::to_string(bytes) +
|
||||
" bytes stored!").c_str());
|
||||
#endif
|
||||
bytes_stored -= bytes;
|
||||
}
|
||||
|
||||
void transfer_bytes(stack_allocator& to, blt::size_t bytes)
|
||||
{
|
||||
#if BLT_DEBUG_LEVEL > 0
|
||||
if (bytes_stored < bytes)
|
||||
BLT_ABORT(("Not enough bytes in stack to transfer " + std::to_string(bytes) + " bytes requested but " + std::to_string(bytes) +
|
||||
" bytes stored!").c_str());
|
||||
#endif
|
||||
to.copy_from(*this, aligned_size(bytes));
|
||||
pop_bytes(bytes);
|
||||
}
|
||||
|
|
@ -297,7 +315,7 @@ namespace blt::gp
|
|||
if (!mask_r[index])
|
||||
return;
|
||||
}
|
||||
from<NO_REF_T<T>>(offset).drop();
|
||||
from<NO_REF_T<T >>(offset).drop();
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -243,7 +243,7 @@ namespace blt::gp
|
|||
vals_r.pop_bytes(static_cast<blt::ptrdiff_t>(total_bytes_after + accumulate_type_sizes(begin_itr, end_itr)));
|
||||
|
||||
// insert the new tree then move back the data from after the original mutation point.
|
||||
vals_r.insert(std::move(new_vals_r));
|
||||
vals_r.insert(new_vals_r);
|
||||
vals_r.copy_from(stack_after_data, total_bytes_after);
|
||||
|
||||
auto before = begin_itr - 1;
|
||||
|
|
@ -252,7 +252,7 @@ namespace blt::gp
|
|||
|
||||
// this will check to make sure that the tree is in a correct and executable state. it requires that the evaluation is context free!
|
||||
#if BLT_DEBUG_LEVEL >= 2
|
||||
BLT_ASSERT(new_vals_r.empty());
|
||||
// BLT_ASSERT(new_vals_r.empty());
|
||||
//BLT_ASSERT(stack_after.empty());
|
||||
blt::size_t bytes_expected = 0;
|
||||
auto bytes_size = vals_r.size().total_used_bytes;
|
||||
|
|
@ -690,7 +690,7 @@ namespace blt::gp
|
|||
vals.copy_from(from_ptr, from_bytes);
|
||||
vals.copy_from(after_ptr, after_to_bytes);
|
||||
|
||||
static std::vector<op_container_t> op_copy;
|
||||
static thread_local std::vector<op_container_t> op_copy;
|
||||
op_copy.clear();
|
||||
op_copy.insert(op_copy.begin(), ops.begin() + from_child.start, ops.begin() + from_child.end);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue