trilinos_helpers.h

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// LIC// ====================================================================
// LIC// This file forms part of oomph-lib, the object-oriented,
// LIC// multi-physics finite-element library, available
// LIC// at http://www.oomph-lib.org.
// LIC//
// LIC// Copyright (C) 2006-2022 Matthias Heil and Andrew Hazel
// LIC//
// LIC// This library is free software; you can redistribute it and/or
// LIC// modify it under the terms of the GNU Lesser General Public
// LIC// License as published by the Free Software Foundation; either
// LIC// version 2.1 of the License, or (at your option) any later version.
// LIC//
// LIC// This library is distributed in the hope that it will be useful,
// LIC// but WITHOUT ANY WARRANTY; without even the implied warranty of
// LIC// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// LIC// Lesser General Public License for more details.
// LIC//
// LIC// You should have received a copy of the GNU Lesser General Public
// LIC// License along with this library; if not, write to the Free Software
// LIC// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// LIC// 02110-1301  USA.
// LIC//
// LIC// The authors may be contacted at oomph-lib@maths.man.ac.uk.
// LIC//
// LIC//====================================================================
#ifndef OOMPH_TRILINOS_HELPERS_HEADER
#define OOMPH_TRILINOS_HELPERS_HEADER
 
 
// Config header generated by autoconfig
#ifdef HAVE_CONFIG_H
#include <oomph-lib-config.h>
#endif
 
#ifdef OOMPH_HAS_MPI
#include "mpi.h"
#endif
 
 
// trilinos headers
#include "Epetra_Map.h"
#include "Epetra_LocalMap.h"
#include "Epetra_Vector.h"
#include "Epetra_CrsMatrix.h"
#include "EpetraExt_MatrixMatrix.h"
#include "ml_epetra_utils.h"
 
#ifdef OOMPH_HAS_MPI
#include "Epetra_MpiComm.h"
#else
#include "Epetra_SerialComm.h"
#endif
 
// oomph-lib headers
#include "matrices.h"
 
// mpi includes
#ifdef OOMPH_HAS_MPI
#include "double_vector.h"
#include "linear_algebra_distribution.h"
#endif
 
namespace oomph
{
  class CRDoubleMatrix;
 
 
  //=============================================================================
  //=============================================================================
  namespace TrilinosEpetraHelpers
  {
    // VECTOR METHODS
    // ============================================================
 
    Epetra_Vector* create_distributed_epetra_vector(
      const DoubleVector& oomph_vec);
 
    Epetra_Vector* create_distributed_epetra_vector(
      const LinearAlgebraDistribution* dist_pt);
 
    Epetra_Vector* create_epetra_vector_view_data(DoubleVector& oomph_vec);
 
    void copy_to_oomphlib_vector(const Epetra_Vector* epetra_vec_pt,
                                 DoubleVector& oomph_vec);
 
    // MATRIX METHODS
    // ============================================================
 
    Epetra_CrsMatrix* create_distributed_epetra_matrix(
      const CRDoubleMatrix* oomph_matrix_pt,
      const LinearAlgebraDistribution* dist_pt);
 
    Epetra_CrsMatrix* create_distributed_epetra_matrix_for_aztecoo(
      CRDoubleMatrix* oomph_matrix_pt);
 
    // MATRIX OPERATION METHODS
    // ==================================================
 
    void multiply(const CRDoubleMatrix* matrix,
                  const DoubleVector& x,
                  DoubleVector& soln);
 
    void multiply(const CRDoubleMatrix& matrix_1,
                  const CRDoubleMatrix& matrix_2,
                  CRDoubleMatrix& matrix_soln,
                  const bool& use_ml = false);
 
    // HELPER METHODS
    // ============================================================
 
    Epetra_Map* create_epetra_map(const LinearAlgebraDistribution* const dist);
  }; // namespace TrilinosEpetraHelpers
} // namespace oomph
#endif