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38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
// Copyright Alain Miniussi 2014.
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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 copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// Authors: Alain Miniussi
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#include <vector>
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#include <iostream>
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#include <boost/mpi/communicator.hpp>
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#include <boost/mpi/collectives.hpp>
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#include <boost/mpi/environment.hpp>
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#include <boost/mpi/cartesian_communicator.hpp>
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#include <boost/test/minimal.hpp>
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namespace mpi = boost::mpi;
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int test_main(int argc, char* argv[])
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{
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mpi::environment env;
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mpi::communicator world;
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if (world.size() != 24) return -1;
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mpi::cartesian_dimension dims[] = {{2, true}, {3,true}, {4,true}};
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mpi::cartesian_communicator cart(world, mpi::cartesian_topology(dims));
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for (int r = 0; r < cart.size(); ++r) {
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cart.barrier();
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if (r == cart.rank()) {
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std::vector<int> c = cart.coordinates(r);
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std::cout << "rk :" << r << " coords: "
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<< c[0] << ' ' << c[1] << ' ' << c[2] << '\n';
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}
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}
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return 0;
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}
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