| // Copyright (C) 2005, 2006 Douglas Gregor. |
| |
| // Use, modification and distribution is subject to the Boost Software |
| // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| // A test of the all_to_all() collective. |
| #include <boost/mpi/collectives/all_to_all.hpp> |
| #include <boost/mpi/communicator.hpp> |
| #include <boost/mpi/environment.hpp> |
| #include <boost/test/minimal.hpp> |
| #include <algorithm> |
| #include "gps_position.hpp" |
| #include <boost/serialization/string.hpp> |
| #include <boost/serialization/list.hpp> |
| #include <boost/iterator/counting_iterator.hpp> |
| #include <boost/lexical_cast.hpp> |
| |
| using boost::mpi::communicator; |
| |
| using boost::mpi::packed_skeleton_iarchive; |
| using boost::mpi::packed_skeleton_oarchive; |
| |
| template<typename Generator> |
| void |
| all_to_all_test(const communicator& comm, Generator generator, |
| const char* kind) |
| { |
| typedef typename Generator::result_type value_type; |
| |
| using boost::mpi::all_to_all; |
| |
| std::vector<value_type> in_values; |
| for (int p = 0; p < comm.size(); ++p) |
| in_values.push_back(generator((p + 1) * (comm.rank() + 1))); |
| |
| if (comm.rank() == 0) { |
| std::cout << "Performing all-to-all operation on " << kind << "..."; |
| std::cout.flush(); |
| } |
| std::vector<value_type> out_values; |
| all_to_all(comm, in_values, out_values); |
| |
| for (int p = 0; p < comm.size(); ++p) { |
| BOOST_CHECK(out_values[p] == generator((p + 1) * (comm.rank() + 1))); |
| } |
| |
| if (comm.rank() == 0) { |
| std::cout << " done." << std::endl; |
| } |
| |
| (comm.barrier)(); |
| } |
| |
| // Generates integers to test with all_to_all() |
| struct int_generator |
| { |
| typedef int result_type; |
| |
| int operator()(int p) const { return 17 + p; } |
| }; |
| |
| // Generates GPS positions to test with all_to_all() |
| struct gps_generator |
| { |
| typedef gps_position result_type; |
| |
| gps_position operator()(int p) const |
| { |
| return gps_position(39 + p, 16, 20.2799); |
| } |
| }; |
| |
| struct string_generator |
| { |
| typedef std::string result_type; |
| |
| std::string operator()(int p) const |
| { |
| std::string result = boost::lexical_cast<std::string>(p); |
| result += " rosebud"; |
| if (p != 1) result += 's'; |
| return result; |
| } |
| }; |
| |
| struct string_list_generator |
| { |
| typedef std::list<std::string> result_type; |
| |
| std::list<std::string> operator()(int p) const |
| { |
| std::list<std::string> result; |
| for (int i = 0; i <= p; ++i) { |
| std::string value = boost::lexical_cast<std::string>(i); |
| result.push_back(value); |
| } |
| return result; |
| } |
| }; |
| |
| int test_main(int argc, char* argv[]) |
| { |
| boost::mpi::environment env(argc, argv); |
| |
| communicator comm; |
| all_to_all_test(comm, int_generator(), "integers"); |
| all_to_all_test(comm, gps_generator(), "GPS positions"); |
| all_to_all_test(comm, string_generator(), "string"); |
| all_to_all_test(comm, string_list_generator(), "list of strings"); |
| |
| return 0; |
| } |