Tpetra_CrsMatrixSolveOp_decl.hpp

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00004 //               Tpetra: Templated Linear Algebra Services Package 
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00028 
00029 #ifndef TPETRA_CRSMATRIXSOLVEOP_HPP
00030 #define TPETRA_CRSMATRIXSOLVEOP_HPP
00031 
00032 #include <Teuchos_RCP.hpp>
00033 #include <Kokkos_DefaultNode.hpp>
00034 #include <Kokkos_DefaultKernels.hpp>
00035 #include "Tpetra_ConfigDefs.hpp"
00036 #include "Tpetra_Operator.hpp"
00037 #include "Tpetra_CrsMatrix.hpp"
00038 
00044 namespace Tpetra {
00045 
00047   template <class OpScalar, class MatScalar = OpScalar, class LocalOrdinal = int, class GlobalOrdinal = LocalOrdinal, class Node = Kokkos::DefaultNode::DefaultNodeType, class LocalMatOps = typename Kokkos::DefaultKernels<MatScalar,LocalOrdinal,Node>::SparseOps >
00048   class CrsMatrixSolveOp : public Operator<OpScalar,LocalOrdinal,GlobalOrdinal,Node> {
00049     public:
00051 
00052 
00054       CrsMatrixSolveOp(const Teuchos::RCP<const CrsMatrix<MatScalar,LocalOrdinal,GlobalOrdinal,Node,LocalMatOps> > &A);
00055 
00057       virtual ~CrsMatrixSolveOp();
00058 
00060 
00062 
00063 
00066       void apply(const MultiVector<OpScalar,LocalOrdinal,GlobalOrdinal,Node> & X, MultiVector<OpScalar,LocalOrdinal,GlobalOrdinal,Node> &Y, 
00067                  Teuchos::ETransp mode = Teuchos::NO_TRANS, OpScalar alpha = Teuchos::ScalarTraits<OpScalar>::one(), OpScalar beta = Teuchos::ScalarTraits<OpScalar>::zero()) const;
00068 
00071       bool hasTransposeApply() const;
00072 
00075       const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> > & getDomainMap() const;
00076 
00079       const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> > & getRangeMap() const;
00080 
00082     
00083     protected:
00084       typedef MultiVector<OpScalar,LocalOrdinal,GlobalOrdinal,Node> MV;
00085 
00086       // underlying CrsMatrix
00087       const Teuchos::RCP<const CrsMatrix<MatScalar,LocalOrdinal,GlobalOrdinal,Node,LocalMatOps> > matrix_;
00088 
00089       // multivectors used for import/export dest/source in apply()
00090       mutable Teuchos::RCP<MultiVector<OpScalar,LocalOrdinal,GlobalOrdinal,Node> > importMV_, exportMV_;
00091 
00092       // private methods for transpose or non-transpose
00093       void applyNonTranspose(const MultiVector<OpScalar,LocalOrdinal,GlobalOrdinal,Node> & X, MultiVector<OpScalar,LocalOrdinal,GlobalOrdinal,Node> &Y) const;
00094       void applyTranspose(const MultiVector<OpScalar,LocalOrdinal,GlobalOrdinal,Node> & X, MultiVector<OpScalar,LocalOrdinal,GlobalOrdinal,Node> &Y) const;
00095   };
00096 
00101   template <class OpScalar, class MatScalar, class LocalOrdinal, class GlobalOrdinal, class Node, class LocalMatOps>
00102   Teuchos::RCP< CrsMatrixSolveOp<OpScalar,MatScalar,LocalOrdinal,GlobalOrdinal,Node,LocalMatOps> >
00103   createCrsMatrixSolveOp(const Teuchos::RCP<const CrsMatrix<MatScalar,LocalOrdinal,GlobalOrdinal,Node,LocalMatOps> > &A);
00104 
00105 } // end of namespace Tpetra
00106 
00107 #endif // TPETRA_CRSMATRIXSOLVEOP_HPP
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