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1 | // Copyright (C) 2005, 2006 Douglas Gregor. | |
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 | // 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> | |
11 | #include <algorithm> | |
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> | |
17 | ||
18 | #define BOOST_TEST_MODULE mpi_all_to_all | |
19 | #include <boost/test/included/unit_test.hpp> | |
20 | ||
21 | using boost::mpi::communicator; | |
22 | ||
23 | using boost::mpi::packed_skeleton_iarchive; | |
24 | using boost::mpi::packed_skeleton_oarchive; | |
25 | ||
26 | template<typename Generator> | |
27 | void | |
28 | all_to_all_test(const communicator& comm, Generator generator, | |
29 | const char* kind) | |
30 | { | |
31 | typedef typename Generator::result_type value_type; | |
32 | ||
33 | using boost::mpi::all_to_all; | |
34 | ||
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))); | |
38 | ||
39 | if (comm.rank() == 0) { | |
40 | std::cout << "Performing all-to-all operation on " << kind << "..."; | |
41 | std::cout.flush(); | |
42 | } | |
43 | std::vector<value_type> out_values; | |
44 | all_to_all(comm, in_values, out_values); | |
45 | ||
46 | for (int p = 0; p < comm.size(); ++p) { | |
47 | BOOST_CHECK(out_values[p] == generator((p + 1) * (comm.rank() + 1))); | |
48 | } | |
49 | ||
50 | if (comm.rank() == 0) { | |
51 | std::cout << " done." << std::endl; | |
52 | } | |
53 | ||
54 | (comm.barrier)(); | |
55 | } | |
56 | ||
57 | // Generates integers to test with all_to_all() | |
58 | struct int_generator | |
59 | { | |
60 | typedef int result_type; | |
61 | ||
62 | int operator()(int p) const { return 17 + p; } | |
63 | }; | |
64 | ||
65 | // Generates GPS positions to test with all_to_all() | |
66 | struct gps_generator | |
67 | { | |
68 | typedef gps_position result_type; | |
69 | ||
70 | gps_position operator()(int p) const | |
71 | { | |
72 | return gps_position(39 + p, 16, 20.2799); | |
73 | } | |
74 | }; | |
75 | ||
76 | struct string_generator | |
77 | { | |
78 | typedef std::string result_type; | |
79 | ||
80 | std::string operator()(int p) const | |
81 | { | |
82 | std::string result = boost::lexical_cast<std::string>(p); | |
83 | result += " rosebud"; | |
84 | if (p != 1) result += 's'; | |
85 | return result; | |
86 | } | |
87 | }; | |
88 | ||
89 | struct string_list_generator | |
90 | { | |
91 | typedef std::list<std::string> result_type; | |
92 | ||
93 | std::list<std::string> operator()(int p) const | |
94 | { | |
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); | |
99 | } | |
100 | return result; | |
101 | } | |
102 | }; | |
103 | ||
104 | BOOST_AUTO_TEST_CASE(all_to_all_check) | |
105 | { | |
106 | boost::mpi::environment env; | |
107 | communicator comm; | |
108 | ||
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"); | |
113 | } |