Teko_InterlacedTpetra.hpp

// @HEADER
// *****************************************************************************
//      Teko: A package for block and physics based preconditioning
//
// Copyright 2010 NTESS and the Teko contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef __Teko_InterlacedTpetra_hpp__
#define __Teko_InterlacedTpetra_hpp__

// Teuchos includes
#include "Teuchos_RCP.hpp"

// include basic Tpetra information
#include "Tpetra_Map.hpp"
#include "Tpetra_CrsMatrix.hpp"
#include "Tpetra_MultiVector.hpp"
#include "Tpetra_Vector.hpp"
#include "Tpetra_Export.hpp"
#include "Tpetra_Import.hpp"

#include "Teko_ConfigDefs.hpp"

#include <vector>

namespace Teko {
namespace TpetraHelpers {
namespace Strided {

void buildSubMaps(GO numGlobals, int numVars, const Teuchos::Comm<int>& comm,
                  std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps);

void buildSubMaps(GO numGlobals, const std::vector<int>& vars, const Teuchos::Comm<int>& comm,
                  std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps);

void buildSubMaps(GO numGlobals, LO numMyElements, GO minMyGID, const std::vector<int>& vars,
                  const Teuchos::Comm<int>& comm,
                  std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps);

void buildSubMaps(const Tpetra::Map<LO, GO, NT>& globalMap, const std::vector<int>& vars,
                  const Teuchos::Comm<int>& comm,
                  std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps);

// build conversion import and export operators
void buildExportImport(
    const Tpetra::Map<LO, GO, NT>& baseMap,
    const std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps,
    std::vector<Teuchos::RCP<Tpetra::Export<LO, GO, NT> > >& subExport,
    std::vector<Teuchos::RCP<Tpetra::Import<LO, GO, NT> > >& subImport);

// build a vector of subVectors
void buildSubVectors(
    const std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps,
    std::vector<Teuchos::RCP<Tpetra::MultiVector<ST, LO, GO, NT> > >& subVectors, LO count);

void associateSubVectors(
    const std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps,
    std::vector<Teuchos::RCP<const Tpetra::MultiVector<ST, LO, GO, NT> > >& subVectors);

// build a single subblock Epetra_CrsMatrix
Teuchos::RCP<Tpetra::CrsMatrix<ST, LO, GO, NT> > buildSubBlock(
    int i, int j, const Teuchos::RCP<const Tpetra::CrsMatrix<ST, LO, GO, NT> >& A,
    const std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps);

// Rebuild a single subblock of a matrix
void rebuildSubBlock(
    int i, int j, const Teuchos::RCP<const Tpetra::CrsMatrix<ST, LO, GO, NT> >& A,
    const std::vector<std::pair<int, Teuchos::RCP<Tpetra::Map<LO, GO, NT> > > >& subMaps,
    Tpetra::CrsMatrix<ST, LO, GO, NT>& mat);

// copy contents of many subvectors to a single vector
void many2one(Tpetra::MultiVector<ST, LO, GO, NT>& one,
              const std::vector<Teuchos::RCP<const Tpetra::MultiVector<ST, LO, GO, NT> > >& many,
              const std::vector<Teuchos::RCP<Tpetra::Export<LO, GO, NT> > >& subExport);

// copy contents of a single vector to many subvectors
void one2many(std::vector<Teuchos::RCP<Tpetra::MultiVector<ST, LO, GO, NT> > >& many,
              const Tpetra::MultiVector<ST, LO, GO, NT>& single,
              const std::vector<Teuchos::RCP<Tpetra::Import<LO, GO, NT> > >& subImport);

}  // namespace Strided
}  // end namespace TpetraHelpers
}  // end namespace Teko

#endif