整理

include/boost/numeric/odeint/external/mpi/mpi.hpp

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+/*
+ [auto_generated]
+ boost/numeric/odeint/external/mpi/mpi.hpp
+
+ [begin_description]
+ Wrappers 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_HPP_INCLUDED
+#define BOOST_NUMERIC_ODEINT_EXTERNAL_MPI_MPI_HPP_INCLUDED
+
+#include <boost/numeric/odeint/external/mpi/mpi_vector_state.hpp>
+#include <boost/numeric/odeint/external/mpi/mpi_nested_algebra.hpp>
+
+#endif

include/boost/numeric/odeint/external/mpi/mpi_nested_algebra.hpp

@@ -0,0 +1,62 @@
+/*
+ [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

include/boost/numeric/odeint/external/mpi/mpi_state.hpp

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+/*
+ [auto_generated]
+ boost/numeric/odeint/external/mpi/mpi_state.hpp
+
+ [begin_description]
+ A generic split state, storing partial data on each node.
+ [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_STATE_HPP_INCLUDED
+#define BOOST_NUMERIC_ODEINT_EXTERNAL_MPI_MPI_STATE_HPP_INCLUDED
+
+#include <vector>
+#include <algorithm>
+#include <boost/mpi.hpp>
+#include <boost/numeric/odeint/util/copy.hpp>
+#include <boost/numeric/odeint/util/split.hpp>
+#include <boost/numeric/odeint/util/resize.hpp>
+#include <boost/numeric/odeint/util/same_size.hpp>
+#include <boost/numeric/odeint/algebra/algebra_dispatcher.hpp>
+#include <boost/numeric/odeint/external/mpi/mpi_nested_algebra.hpp>
+
+namespace boost {
+namespace numeric {
+namespace odeint {
+
+/** \brief A container which has its contents distributed among the nodes.
+ */
+template< class InnerState >
+struct mpi_state
+{
+    typedef InnerState value_type;
+
+    // the node's local data.
+    InnerState m_data;
+
+    boost::mpi::communicator world;
+
+    mpi_state() {}
+    mpi_state(boost::mpi::communicator comm) : world(comm) {}
+
+    inline InnerState &operator()() { return m_data; }
+    inline const InnerState &operator()() const { return m_data; }
+};
+
+
+
+
+template< class InnerState >
+struct is_resizeable< mpi_state< InnerState > >
+     : is_resizeable< InnerState > { };
+
+
+template< class InnerState1 , class InnerState2 >
+struct same_size_impl< mpi_state< InnerState1 > , mpi_state< InnerState2 > >
+{
+    static bool same_size( const mpi_state< InnerState1 > &x , const mpi_state< InnerState2 > &y )
+    {
+        const bool local = boost::numeric::odeint::same_size(x(), y());
+        return boost::mpi::all_reduce(x.world, local, mpi::bitwise_and<bool>());
+    }
+};
+
+
+template< class InnerState1 , class InnerState2 >
+struct resize_impl< mpi_state< InnerState1 > , mpi_state< InnerState2 > >
+{
+    static void resize( mpi_state< InnerState1 > &x , const mpi_state< InnerState2 > &y )
+    {
+        // resize local parts on each node.
+        boost::numeric::odeint::resize(x(), y());
+    }
+};
+
+
+/** \brief Copy data between mpi_states of same size. */
+template< class InnerState1 , class InnerState2 >
+struct copy_impl< mpi_state< InnerState1 > , mpi_state< InnerState2 > >
+{
+    static void copy( const mpi_state< InnerState1 > &from , mpi_state< InnerState2 > &to )
+    {
+        // copy local parts on each node.
+        boost::numeric::odeint::copy(from(), to());
+    }
+};
+
+
+
+/** \brief Use `mpi_algebra` for `mpi_state`. */
+template< class InnerState >
+struct algebra_dispatcher< mpi_state< InnerState > >
+{
+    typedef mpi_nested_algebra<
+        typename algebra_dispatcher< InnerState >::algebra_type
+    > algebra_type;
+};
+
+
+}
+}
+}
+
+
+#endif

include/boost/numeric/odeint/external/mpi/mpi_vector_state.hpp

@@ -0,0 +1,95 @@
+/*
+ [auto_generated]
+ boost/numeric/odeint/external/mpi/mpi_vector_state.hpp
+
+ [begin_description]
+ Copying a container from/to an mpi_state splits/joins it.
+ [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_VECTOR_STATE_HPP_INCLUDED
+#define BOOST_NUMERIC_ODEINT_EXTERNAL_MPI_MPI_VECTOR_STATE_HPP_INCLUDED
+
+#include <vector>
+#include <algorithm>
+#include <boost/mpi.hpp>
+#include <boost/numeric/odeint/util/copy.hpp>
+#include <boost/numeric/odeint/util/split_adaptor.hpp>
+#include <boost/numeric/odeint/algebra/algebra_dispatcher.hpp>
+#include <boost/numeric/odeint/external/mpi/mpi_state.hpp>
+#include <boost/numeric/odeint/tools/assert.hpp>
+
+namespace boost {
+namespace numeric {
+namespace odeint {
+
+
+/** \brief Split data from some container on node 0 to the slaves.
+ * Source must be a model of Random Access Range. */
+template< class Source , class InnerState >
+struct split_impl< Source, mpi_state< InnerState >,
+    typename boost::enable_if< boost::has_range_const_iterator<Source> >::type >
+{
+    typedef typename boost::range_iterator<const Source>::type iterator;
+
+    static void split( const Source &from, mpi_state< InnerState > &to )
+    {
+        std::vector< InnerState > pieces;
+        if(to.world.rank() == 0) {
+            const size_t num = static_cast<size_t>(to.world.size());
+            pieces.resize(num);
+            for(size_t i = 0 ; i < num ; i++) {
+                iterator_range<iterator> part = detail::make_split_range(from, i, num);
+                boost::numeric::odeint::resize(pieces[i], part);
+                boost::numeric::odeint::copy(part, pieces[i]);
+            }
+        }
+        // send to nodes
+        boost::mpi::scatter(to.world, pieces, to(), 0);
+    }
+};
+
+/** \brief Merge data from an mpi_state to some container on node 0.
+ * Target must be a model Single Pass Range. */
+template< class Target, class InnerState >
+struct unsplit_impl< mpi_state< InnerState >, Target,
+    typename boost::enable_if< boost::has_range_iterator<Target> >::type >
+{
+    typedef typename boost::range_iterator<Target>::type iterator;
+
+    static void unsplit( const mpi_state< InnerState > &from , Target &to )
+    {
+        std::vector< InnerState > pieces;
+        // send data to root
+        boost::mpi::gather(from.world, from(), pieces, 0);
+        if(from.world.rank() == 0) {
+            // check target size
+            size_t total_size = 0;
+            for(size_t i = 0 ; i < pieces.size() ; i++)
+                total_size += boost::size(pieces[i]);
+            BOOST_NUMERIC_ODEINT_ASSERT( total_size <= boost::size(to) );
+            // copy parts
+            iterator out = boost::begin(to);
+            for(size_t i = 0 ; i < pieces.size() ; i++)
+                out = boost::copy(pieces[i], out);
+        }
+    }
+};
+
+
+}
+}
+}
+
+
+#endif
+