79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
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#pragma once
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#include "./graph_base.hpp"
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#include <taskflow/cuda/cudaflow.hpp>
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#include <cassert>
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template <typename OPT>
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class GraphExecutor {
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public:
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GraphExecutor(Graph& graph, int dev_id = 0);
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template <typename... OPT_Args>
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void traversal(OPT_Args&&... args);
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private:
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int _dev_id;
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Graph& _g;
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};
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template <typename OPT>
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GraphExecutor<OPT>::GraphExecutor(Graph& graph, int dev_id): _g{graph}, _dev_id{dev_id} {
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//TODO: why we cannot put cuda lambda function here?
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}
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template <typename OPT>
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template <typename... OPT_Args>
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void GraphExecutor<OPT>::traversal(OPT_Args&&... args) {
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tf::Taskflow taskflow;
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tf::Executor executor;
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taskflow.emplace([this, args...]() {
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tf::cudaFlowCapturer cf;
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cf.make_optimizer<OPT>(args...);
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std::vector<std::vector<tf::cudaTask>> tasks;
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tasks.resize(_g.get_graph().size());
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for(size_t l = 0; l < _g.get_graph().size(); ++l) {
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tasks[l].resize((_g.get_graph())[l].size());
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for(size_t i = 0; i < (_g.get_graph())[l].size(); ++i) {
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bool* v = _g.at(l, i).visited;
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tasks[l][i] = cf.single_task([v] __device__ () {
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*v = true;
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});
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}
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}
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for(size_t l = 0; l < _g.get_graph().size() - 1; ++l) {
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for(size_t i = 0; i < (_g.get_graph())[l].size(); ++i) {
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for(auto&& out_node: _g.at(l, i).out_nodes) {
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tasks[l][i].precede(tasks[l + 1][out_node]);
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}
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}
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}
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tf::cudaStream stream;
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cf.run(stream);
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stream.synchronize();
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}).name("traverse");
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//auto check_t = taskflow.emplace([this](){
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//assert(_g.traversed());
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//});
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//trav_t.precede(check_t);
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executor.run(taskflow).wait();
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}
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