1 // Copyright (C) 2006 The Trustees of Indiana University.
2
3 // Use, modification and distribution is subject to the Boost Software
4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6
7 // Authors: Brian Barrett
8 // Nick Edmonds
9 // Andrew Lumsdaine
10
11 #include <boost/graph/use_mpi.hpp>
12 #include <boost/config.hpp>
13 #include <boost/throw_exception.hpp>
14 #include <boost/graph/distributed/adjacency_list.hpp>
15 #include <boost/property_map/parallel/distributed_property_map.hpp>
16 #include <boost/graph/distributed/mpi_process_group.hpp>
17 #include <boost/graph/dimacs.hpp>
18 #include <boost/graph/graphviz.hpp>
19 #include <boost/test/minimal.hpp>
20
21 #include <iostream>
22 #include <cstdlib>
23 #include <iomanip>
24 #include <fstream>
25
26 #ifdef BOOST_NO_EXCEPTIONS
27 void
throw_exception(std::exception const & ex)28 boost::throw_exception(std::exception const& ex)
29 {
30 std::cout << ex.what() << std::endl;
31 abort();
32 }
33 #endif
34
35 using namespace boost;
36 using namespace boost::graph;
37 using boost::graph::distributed::mpi_process_group;
38
39 typedef double time_type;
40
get_time()41 inline time_type get_time()
42 {
43 return MPI_Wtime();
44 }
45
print_time(time_type t)46 std::string print_time(time_type t)
47 {
48 std::ostringstream out;
49 out << std::setiosflags(std::ios::fixed) << std::setprecision(2) << t;
50 return out.str();
51 }
52
53 void
test_dimacs_reader(const char * filename)54 test_dimacs_reader(const char *filename)
55 {
56 mpi_process_group pg;
57
58 typedef adjacency_list<vecS,
59 distributedS<mpi_process_group, vecS>,
60 undirectedS> Graph;
61
62 std::ifstream file(filename);
63 dimacs_basic_reader reader = dimacs_basic_reader(file, false);
64 dimacs_basic_reader end;
65 boost::parallel::variant_distribution<mpi_process_group> distrib =
66 boost::parallel::block(pg, reader.n_vertices());
67
68 Graph g(dimacs_edge_iterator<dimacs_basic_reader>(reader),
69 dimacs_edge_iterator<dimacs_basic_reader>(end),
70 reader.n_vertices(), pg, distrib);;
71
72 // write_graphviz("reader.dot", g);
73 }
74
75 int
test_main(int argc,char * argv[])76 test_main(int argc, char* argv[])
77 {
78 mpi::environment env(argc, argv);
79
80 if (argc == 2) {
81 test_dimacs_reader(argv[1]);
82 }
83
84 return 0;
85 }
86