Transposition.h

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///////////////////////////////////////////////////////////////////////////////
//
// File Transposition.h
//
// For more information, please see: http://www.nektar.info
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// License for the specific language governing rights and limitations under
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// Description: Manager class for homogeneous data transposition
//
///////////////////////////////////////////////////////////////////////////////
#ifndef NEKTAR_LIB_UTILITIES_HOMOGENEOUS1D_H
#define NEKTAR_LIB_UTILITIES_HOMOGENEOUS1D_H

#include <LibUtilities/Communication/Comm.h>
#include <LibUtilities/BasicUtils/SharedArray.hpp>
#include <LibUtilities/BasicConst/NektarUnivTypeDefs.hpp>
#include <LibUtilities/LibUtilitiesDeclspec.h>

namespace Nektar { namespace LibUtilities { class BasisKey; } }

namespace Nektar
{
    namespace LibUtilities
    {
        enum TranspositionDir
        {
            eXYtoZ,
            eZtoXY,
            eXtoYZ,
            eYZtoX,
            eYZtoZY,
            eZYtoYZ,
            eXtoY,
            eYtoZ,
            eZtoX,
            eNoTrans
        };

        class Transposition
        {
        public:
            LIB_UTILITIES_EXPORT Transposition(
                    const LibUtilities::BasisKey &HomoBasis0,
                          LibUtilities::CommSharedPtr hcomm0,
                          LibUtilities::CommSharedPtr hcomm1);

            LIB_UTILITIES_EXPORT Transposition(
                    const LibUtilities::BasisKey &HomoBasis0,
                    const LibUtilities::BasisKey &HomoBasis1,
                          LibUtilities::CommSharedPtr hcomm);

            LIB_UTILITIES_EXPORT Transposition(
                    const LibUtilities::BasisKey &HomoBasis0,
                    const LibUtilities::BasisKey &HomoBasis1,
                    const LibUtilities::BasisKey &HomoBasis2,
                          LibUtilities::CommSharedPtr hcomm);

            LIB_UTILITIES_EXPORT ~Transposition();

            LIB_UTILITIES_EXPORT unsigned int GetK(int i);

            LIB_UTILITIES_EXPORT Array<OneD, unsigned int> GetKs(void);

            LIB_UTILITIES_EXPORT unsigned int GetPlaneID(int i);

            LIB_UTILITIES_EXPORT unsigned int GetStripID(void);

            LIB_UTILITIES_EXPORT Array<OneD, unsigned int> GetPlanesIDs(void);

            LIB_UTILITIES_EXPORT void Transpose(
                    const Array<OneD,const NekDouble> &inarray,
                          Array<OneD,      NekDouble> &outarray,
                    bool UseNumMode = false,
                    TranspositionDir dir = eNoTrans);

            LIB_UTILITIES_EXPORT void SetSpecVanVisc(Array<OneD, NekDouble> visc);
            
            LIB_UTILITIES_EXPORT NekDouble GetSpecVanVisc(const int k);

        protected:
            CommSharedPtr         m_hcomm;

        private:

            LIB_UTILITIES_EXPORT void TransposeXYtoZ(
                    const Array<OneD,const NekDouble> &inarray,
                          Array<OneD,      NekDouble> &outarray,
                    bool UseNumMode = false);

            LIB_UTILITIES_EXPORT void TransposeZtoXY(
                    const Array<OneD,const NekDouble> &inarray,
                          Array<OneD,      NekDouble> &outarray,
                    bool UseNumMode = false);

            LIB_UTILITIES_EXPORT void TransposeXtoYZ(
                    const Array<OneD,const NekDouble> &inarray,
                          Array<OneD,      NekDouble> &outarray,
                    bool UseNumMode = false);

            LIB_UTILITIES_EXPORT void TransposeYZtoX(
                    const Array<OneD,const NekDouble> &inarray,
                          Array<OneD,      NekDouble> &outarray,
                    bool UseNumMode = false);

            LIB_UTILITIES_EXPORT void TransposeYZtoZY(
                    const Array<OneD,const NekDouble> &inarray,
                          Array<OneD,      NekDouble> &outarray,
                    bool UseNumMode = false);

            LIB_UTILITIES_EXPORT void TransposeZYtoYZ(
                    const Array<OneD,const NekDouble> &inarray,
                          Array<OneD,      NekDouble> &outarray,
                    bool UseNumMode = false);

            int m_num_homogeneous_directions;

            /// Number of homogeneous points on each processor per direction.
            Array<OneD,int> m_num_points_per_proc;

            /// Total homogeneous points per direction.
            Array<OneD,int> m_num_homogeneous_points;

            /// Total number of homogeneous coefficients.
            Array<OneD,int> m_num_homogeneous_coeffs;

            Array<OneD,int> m_num_processes;

            /// Rank of process
            int m_rank_id;

            /// IDs of the planes on the processes.
            Array<OneD, unsigned int> m_planes_IDs;

            /// IDs of the strips on the processes.
            unsigned int m_strip_ID;

            /// Fourier wave numbers associated with the planes.
            Array<OneD, unsigned int> m_K;

            /// MPI_Alltoallv map containing size of send/recv buffer.
            Array<OneD,int> m_SizeMap;

            /// MPI_Alltoallv offset map of send/recv buffer in global vector.
            Array<OneD,int> m_OffsetMap;
        };

        typedef boost::shared_ptr<Transposition>      TranspositionSharedPtr;
    }
}
#endif