1 // Copyright (C) 2005, 2006 Douglas Gregor.
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)
7 // A test of the all_to_all() collective.
8 #include <boost/mpi/collectives/all_to_all.hpp>
9 #include <boost/mpi/communicator.hpp>
10 #include <boost/mpi/environment.hpp>
12 #include "gps_position.hpp"
13 #include <boost/serialization/string.hpp>
14 #include <boost/serialization/list.hpp>
15 #include <boost/iterator/counting_iterator.hpp>
16 #include <boost/lexical_cast.hpp>
18 #define BOOST_TEST_MODULE mpi_all_to_all
19 #include <boost/test/included/unit_test.hpp>
21 using boost::mpi::communicator;
23 using boost::mpi::packed_skeleton_iarchive;
24 using boost::mpi::packed_skeleton_oarchive;
26 template<typename Generator>
28 all_to_all_test(const communicator& comm, Generator generator,
31 typedef typename Generator::result_type value_type;
33 using boost::mpi::all_to_all;
35 std::vector<value_type> in_values;
36 for (int p = 0; p < comm.size(); ++p)
37 in_values.push_back(generator((p + 1) * (comm.rank() + 1)));
39 if (comm.rank() == 0) {
40 std::cout << "Performing all-to-all operation on " << kind << "...";
43 std::vector<value_type> out_values;
44 all_to_all(comm, in_values, out_values);
46 for (int p = 0; p < comm.size(); ++p) {
47 BOOST_CHECK(out_values[p] == generator((p + 1) * (comm.rank() + 1)));
50 if (comm.rank() == 0) {
51 std::cout << " done." << std::endl;
57 // Generates integers to test with all_to_all()
60 typedef int result_type;
62 int operator()(int p) const { return 17 + p; }
65 // Generates GPS positions to test with all_to_all()
68 typedef gps_position result_type;
70 gps_position operator()(int p) const
72 return gps_position(39 + p, 16, 20.2799);
76 struct string_generator
78 typedef std::string result_type;
80 std::string operator()(int p) const
82 std::string result = boost::lexical_cast<std::string>(p);
84 if (p != 1) result += 's';
89 struct string_list_generator
91 typedef std::list<std::string> result_type;
93 std::list<std::string> operator()(int p) const
95 std::list<std::string> result;
96 for (int i = 0; i <= p; ++i) {
97 std::string value = boost::lexical_cast<std::string>(i);
98 result.push_back(value);
104 BOOST_AUTO_TEST_CASE(all_to_all_check)
106 boost::mpi::environment env;
109 all_to_all_test(comm, int_generator(), "integers");
110 all_to_all_test(comm, gps_generator(), "GPS positions");
111 all_to_all_test(comm, string_generator(), "string");
112 all_to_all_test(comm, string_list_generator(), "list of strings");