superlu_dist_interf.hpp

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/*
   Copyright (c) 2012 The Regents of the University of California,
   through Lawrence Berkeley National Laboratory.  

   Author: Lin Lin

   This file is part of PEXSI. All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:

   (1) Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
   (2) Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
   (3) Neither the name of the University of California, Lawrence Berkeley
   National Laboratory, U.S. Dept. of Energy nor the names of its contributors may
   be used to endorse or promote products derived from this software without
   specific prior written permission.

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*/
#ifndef _SUPERLU_DIST_INTERF_HPP_
#define _SUPERLU_DIST_INTERF_HPP_

// Interface with PSelInv
#include "pselinv.hpp"

// Interface with sparse matrix (CSC format)
#include  "sparse_matrix_impl.hpp"

// Interface with LAPACK
#include  "lapack.hpp"

namespace PEXSI{
        struct SuperNodeType;
        class PMatrix;

        class SuperLUGrid{
                friend class SuperLUMatrix;
        private:
                struct           GridData;
                GridData*        ptrData;
        public:
                SuperLUGrid( MPI_Comm comm, int nprow, int npcol );

                ~SuperLUGrid();

        };


        struct SuperLUOptions{
                Int              numProcSymbFact;
                Int              maxPipelineDepth; 

                std::string      ColPerm;

                // Member functions to setup the default value
                SuperLUOptions(): numProcSymbFact(0), maxPipelineDepth(-1), ColPerm("MMD_AT_PLUS_A") {}
        };

        class SuperLUMatrix{
        private:
                struct        SuperLUData;
                SuperLUData*  ptrData;
        public:

                SuperLUMatrix( const SuperLUGrid& g, const SuperLUOptions& opt = SuperLUOptions() );
                ~SuperLUMatrix();

                Int m() const;

                Int n() const;

                void DistSparseMatrixToSuperMatrixNRloc( DistSparseMatrix<Scalar>& sparseA );

                void DestroyAOnly();

                void SymbolicFactorize();

                void Distribute();

                void NumericalFactorize();

                void ConvertNRlocToNC( SuperLUMatrix& AGlobal );

                void MultiplyGlobalMultiVector( NumMat<Scalar>& xGlobal, NumMat<Scalar>& bGlobal );

                void DistributeGlobalMultiVector( NumMat<Scalar>& xGlobal, NumMat<Scalar>& xLocal );

                void GatherDistributedMultiVector       ( NumMat<Scalar>& xGlobal, NumMat<Scalar>& xLocal );

                void SolveDistMultiVector( NumMat<Scalar>& bLocal, DblNumVec& berr );


                void CheckErrorDistMultiVector( NumMat<Scalar>& xLocal, NumMat<Scalar>& xTrueLocal );

                void LUstructToPMatrix( PMatrix& PMloc );

                void SymbolicToSuperNode( SuperNodeType& super );
        };





} // namespace PEXSI

#endif // _SUPERLU_DIST_INTERF_HPP_