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/*
[auto_generated]
boost/numeric/odeint/external/mpi/mpi_nested_algebra.hpp
[begin_description]
Nested parallelized algebra for MPI.
[end_description]
Copyright 2013 Karsten Ahnert
Copyright 2013 Mario Mulansky
Copyright 2013 Pascal Germroth
Distributed under 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)
*/
#ifndef BOOST_NUMERIC_ODEINT_EXTERNAL_MPI_MPI_NESTED_ALGEBRA_HPP_INCLUDED
#define BOOST_NUMERIC_ODEINT_EXTERNAL_MPI_MPI_NESTED_ALGEBRA_HPP_INCLUDED
#include <boost/numeric/odeint/algebra/norm_result_type.hpp>
#include <boost/numeric/odeint/util/n_ary_helper.hpp>
namespace boost {
namespace numeric {
namespace odeint {
/** \brief MPI-parallelized algebra, wrapping another algebra.
*/
template< class InnerAlgebra >
struct mpi_nested_algebra
{
// execute the InnerAlgebra on each node's local data.
#define BOOST_ODEINT_GEN_BODY(n) \
InnerAlgebra::for_each##n( \
BOOST_PP_ENUM_BINARY_PARAMS(n, s, () BOOST_PP_INTERCEPT) , \
op \
);
BOOST_ODEINT_GEN_FOR_EACH(BOOST_ODEINT_GEN_BODY)
#undef BOOST_ODEINT_GEN_BODY
template< class NestedState >
static typename norm_result_type< typename NestedState::value_type >::type norm_inf( const NestedState &s )
{
typedef typename norm_result_type< typename NestedState::value_type >::type result_type;
// local maximum
result_type value = InnerAlgebra::norm_inf( s() );
// global maximum
return boost::mpi::all_reduce(s.world, value, boost::mpi::maximum<result_type>());
}
};
}
}
}
#endif