1 /*
2 Copyright 2013 Karsten Ahnert
3 Copyright 2013 Mario Mulansky
4 Copyright 2013 Pascal Germroth
5
6 Distributed under the Boost Software License, Version 1.0.
7 (See accompanying file LICENSE_1_0.txt or
8 copy at http://www.boost.org/LICENSE_1_0.txt)
9 */
10
11 #include <iostream>
12 #include <sstream>
13
14 #define BOOST_TEST_MODULE odeint_mpi
15 #include <boost/test/unit_test.hpp>
16
17 #include <boost/numeric/odeint/external/mpi/mpi.hpp>
18
19 using namespace boost::numeric::odeint;
20
21 boost::mpi::environment env;
22
23 BOOST_AUTO_TEST_SUITE( split_test_suite )
24
BOOST_AUTO_TEST_CASE(split_test)25 BOOST_AUTO_TEST_CASE( split_test )
26 {
27 boost::mpi::communicator world;
28
29 const size_t total_size = 31;
30
31 std::vector<size_t> in_data, out_data;
32 mpi_state< std::vector<size_t> > state(world);
33
34 // generate data on master
35 if(world.rank() == 0)
36 for(size_t i = 0 ; i < total_size ; i++) in_data.push_back(i);
37
38 // copy to nodes
39 split( in_data, state );
40
41 BOOST_REQUIRE((state().size() == total_size / world.size())
42 || (state().size() == total_size / world.size() + 1));
43
44 {
45 std::ostringstream ss;
46 ss << "state[" << world.rank() << "].data = {";
47 std::copy(state().begin(), state().end(), std::ostream_iterator<size_t>(ss, ", "));
48 ss << "}\n";
49 std::clog << ss.str() << std::flush;
50 }
51
52 // copy back to master
53 if(world.rank() == 0) out_data.resize(in_data.size());
54 unsplit( state, out_data );
55
56 if(world.rank() == 0)
57 BOOST_REQUIRE_EQUAL_COLLECTIONS(in_data.begin(), in_data.end(), out_data.begin(), out_data.end());
58 }
59
60
61 BOOST_AUTO_TEST_SUITE_END()
62