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62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
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/*
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Copyright 2013 Karsten Ahnert
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Copyright 2013 Mario Mulansky
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Copyright 2013 Pascal Germroth
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or
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copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <iostream>
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#include <sstream>
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#define BOOST_TEST_MODULE odeint_mpi
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#include <boost/test/unit_test.hpp>
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#include <boost/numeric/odeint/external/mpi/mpi.hpp>
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using namespace boost::numeric::odeint;
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boost::mpi::environment env;
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BOOST_AUTO_TEST_SUITE( split_test_suite )
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BOOST_AUTO_TEST_CASE( split_test )
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{
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boost::mpi::communicator world;
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const size_t total_size = 31;
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std::vector<size_t> in_data, out_data;
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mpi_state< std::vector<size_t> > state(world);
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// generate data on master
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if(world.rank() == 0)
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for(size_t i = 0 ; i < total_size ; i++) in_data.push_back(i);
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// copy to nodes
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split( in_data, state );
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BOOST_REQUIRE((state().size() == total_size / world.size())
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|| (state().size() == total_size / world.size() + 1));
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{
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std::ostringstream ss;
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ss << "state[" << world.rank() << "].data = {";
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std::copy(state().begin(), state().end(), std::ostream_iterator<size_t>(ss, ", "));
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ss << "}\n";
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std::clog << ss.str() << std::flush;
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}
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// copy back to master
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if(world.rank() == 0) out_data.resize(in_data.size());
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unsplit( state, out_data );
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if(world.rank() == 0)
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BOOST_REQUIRE_EQUAL_COLLECTIONS(in_data.begin(), in_data.end(), out_data.begin(), out_data.end());
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}
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BOOST_AUTO_TEST_SUITE_END()
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