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- // 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 <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>
- #define BOOST_TEST_MODULE mpi_all_to_all
- #include <boost/test/included/unit_test.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;
- }
- };
- BOOST_AUTO_TEST_CASE(all_to_all_check)
- {
- boost::mpi::environment env;
- 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");
- }
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