118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
// Copyright (C) 2006 The Trustees of Indiana University.
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// Authors: Brian Barrett
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// Nick Edmonds
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// Andrew Lumsdaine
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#include <boost/graph/use_mpi.hpp>
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#include <boost/config.hpp>
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#include <boost/throw_exception.hpp>
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#include <boost/graph/distributed/adjacency_list.hpp>
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#include <boost/property_map/parallel/distributed_property_map.hpp>
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#include <boost/graph/distributed/mpi_process_group.hpp>
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#include <boost/graph/distributed/concepts.hpp>
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#include <boost/graph/distributed/connected_components_parallel_search.hpp>
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#include <boost/graph/distributed/connected_components.hpp>
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#include <boost/graph/rmat_graph_generator.hpp>
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#include <boost/random/linear_congruential.hpp>
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#include <boost/graph/graphviz.hpp>
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#include <boost/property_map/vector_property_map.hpp>
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#include <iostream>
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#include <cstdlib>
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#include <iomanip>
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#ifdef BOOST_NO_EXCEPTIONS
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void
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boost::throw_exception(std::exception const& ex)
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{
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std::cout << ex.what() << std::endl;
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abort();
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}
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#endif
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using namespace boost;
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using boost::graph::distributed::mpi_process_group;
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typedef double time_type;
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inline time_type get_time()
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{
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return MPI_Wtime();
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}
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std::string print_time(time_type t)
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{
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std::ostringstream out;
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out << std::setiosflags(std::ios::fixed) << std::setprecision(2) << t;
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return out.str();
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}
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void
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test_filtered_rmat_cc(int n, int m, double a, double b, double c, double d)
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{
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mpi_process_group pg;
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std::size_t id = process_id(pg);
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if (id == 0) printf("INFO: Params: n=%d, m=%d, a=%f, b=%f, c=%f, d=%f.\n",
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n, m, a, b, c, d);
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typedef parallel::variant_distribution<mpi_process_group> Distribution;
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Distribution distrib = parallel::block(pg, n);
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typedef adjacency_list<vecS,
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distributedS<mpi_process_group, vecS>,
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undirectedS> Graph;
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typedef scalable_rmat_iterator<mpi_process_group, Distribution, rand48, Graph>
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RMATIter;
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if (id == 0) printf("INFO: Generating graph.\n");
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rand48 gen;
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time_type gen_start = get_time();
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Graph g(RMATIter(pg, distrib, gen, n, m, a, b, c, d, true),
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RMATIter(), n, pg, distrib);
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time_type gen_end = get_time();
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std::cout << "INFO: Graph Gen time: " << print_time(gen_end - gen_start) << std::endl;
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synchronize(g);
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if (id == 0) printf("INFO: Starting connected components.\n");
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std::vector<int> local_components_vec(num_vertices(g));
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typedef iterator_property_map<std::vector<int>::iterator, property_map<Graph, vertex_index_t>::type> ComponentMap;
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ComponentMap component(local_components_vec.begin(), get(vertex_index, g));
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time_type start = get_time();
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int num_components = connected_components_ps(g, component);
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time_type end = get_time();
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if (process_id(g.process_group()) == 0) {
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std::cout << "INFO: Test Complete. components found = " << num_components
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<< ", time = " << print_time(end - start) << "s." << std::endl;
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printf("RESULT: %d %d %d %f %f %f %f %f\n",
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num_processes(pg), n, m, a, b, c, d, end - start);
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}
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}
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int
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main(int argc, char* argv[])
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{
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mpi::environment env(argc, argv);
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if (argc < 7)
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test_filtered_rmat_cc(40, 200, 0.58, 0.19, 0.19, 0.04);
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else
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test_filtered_rmat_cc(atoi(argv[1]), atoi(argv[2]),
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atof(argv[3]), atof(argv[4]),
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atof(argv[5]), atof(argv[6]));
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return 0;
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}
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