63 lines
1.7 KiB
Plaintext
63 lines
1.7 KiB
Plaintext
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/*
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[auto_generated]
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boost/numeric/odeint/external/mpi/mpi_nested_algebra.hpp
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[begin_description]
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Nested parallelized algebra for MPI.
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[end_description]
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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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#ifndef BOOST_NUMERIC_ODEINT_EXTERNAL_MPI_MPI_NESTED_ALGEBRA_HPP_INCLUDED
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#define BOOST_NUMERIC_ODEINT_EXTERNAL_MPI_MPI_NESTED_ALGEBRA_HPP_INCLUDED
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#include <boost/numeric/odeint/algebra/norm_result_type.hpp>
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#include <boost/numeric/odeint/util/n_ary_helper.hpp>
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namespace boost {
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namespace numeric {
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namespace odeint {
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/** \brief MPI-parallelized algebra, wrapping another algebra.
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*/
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template< class InnerAlgebra >
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struct mpi_nested_algebra
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{
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// execute the InnerAlgebra on each node's local data.
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#define BOOST_ODEINT_GEN_BODY(n) \
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InnerAlgebra::for_each##n( \
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BOOST_PP_ENUM_BINARY_PARAMS(n, s, () BOOST_PP_INTERCEPT) , \
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op \
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);
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BOOST_ODEINT_GEN_FOR_EACH(BOOST_ODEINT_GEN_BODY)
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#undef BOOST_ODEINT_GEN_BODY
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template< class NestedState >
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static typename norm_result_type< typename NestedState::value_type >::type norm_inf( const NestedState &s )
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{
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typedef typename norm_result_type< typename NestedState::value_type >::type result_type;
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// local maximum
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result_type value = InnerAlgebra::norm_inf( s() );
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// global maximum
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return boost::mpi::all_reduce(s.world, value, boost::mpi::maximum<result_type>());
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}
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};
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}
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}
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}
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#endif
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