Ifpack2_Experimental_RBILUK_decl.hpp

Go to the documentation of this file.

/*@HEADER
// ***********************************************************************
//
//       Ifpack2: Templated Object-Oriented Algebraic Preconditioner Package
//                 Copyright (2009) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// 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 Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
*/

 
#ifndef IFPACK2_EXPERIMENTALCRSRBILUK_DECL_HPP
#define IFPACK2_EXPERIMENTALCRSRBILUK_DECL_HPP
 
#include <Tpetra_BlockCrsMatrix.hpp>
 
#include <Ifpack2_RILUK.hpp>
 
namespace Ifpack2 {
 
namespace Experimental {

template<class MatrixType>
class RBILUK : virtual public Ifpack2::RILUK< Tpetra::RowMatrix< typename MatrixType::scalar_type,
  typename MatrixType::local_ordinal_type, typename MatrixType::global_ordinal_type, typename MatrixType::node_type> >
{
 public:



  typedef typename MatrixType::scalar_type scalar_type;
 
  //typedef typename MatrixType::impl_scalar_type impl_scalar_type;
  typedef typename Kokkos::ArithTraits<typename MatrixType::scalar_type>::val_type impl_scalar_type;

  typedef typename MatrixType::local_ordinal_type local_ordinal_type;
  typedef typename MatrixType::local_ordinal_type LO;

  typedef typename MatrixType::global_ordinal_type global_ordinal_type;
  typedef typename MatrixType::global_ordinal_type GO;

  typedef typename MatrixType::node_type node_type;

  typedef typename Teuchos::ScalarTraits<scalar_type>::magnitudeType magnitude_type;

  typedef Tpetra::RowMatrix<scalar_type,
      local_ordinal_type,
      global_ordinal_type,
      node_type> row_matrix_type;

  typedef Tpetra::CrsMatrix<scalar_type,
      local_ordinal_type,
      global_ordinal_type,
      node_type> crs_matrix_type;
  
  using crs_graph_type = Tpetra::CrsGraph<local_ordinal_type,
                                          global_ordinal_type,
                                          node_type>;
 
  typedef Tpetra::BlockCrsMatrix<scalar_type,
                            local_ordinal_type,
                            global_ordinal_type,
                            node_type> block_crs_matrix_type;
 
  template <class NewMatrixType> friend class RBILUK;


  
  typedef typename crs_matrix_type::local_matrix_device_type local_matrix_device_type;
  typedef typename local_matrix_device_type::StaticCrsGraphType::row_map_type lno_row_view_t;
  typedef typename local_matrix_device_type::StaticCrsGraphType::entries_type lno_nonzero_view_t;
  typedef typename local_matrix_device_type::values_type scalar_nonzero_view_t;
  typedef typename local_matrix_device_type::StaticCrsGraphType::device_type::memory_space TemporaryMemorySpace;
  typedef typename local_matrix_device_type::StaticCrsGraphType::device_type::memory_space PersistentMemorySpace;
  typedef typename local_matrix_device_type::StaticCrsGraphType::device_type::execution_space HandleExecSpace;
  typedef typename KokkosKernels::Experimental::KokkosKernelsHandle
      <typename lno_row_view_t::const_value_type, typename lno_nonzero_view_t::const_value_type, typename scalar_nonzero_view_t::value_type,
      HandleExecSpace, TemporaryMemorySpace,PersistentMemorySpace > kk_handle_type;
  //typedef typename KokkosKernels::Experimental::KokkosKernelsHandle
  //    <typename lno_row_view_t::non_const_value_type, typename lno_nonzero_view_t::non_const_value_type, typename scalar_nonzero_view_t::value_type,
  //    HandleExecSpace, TemporaryMemorySpace,PersistentMemorySpace > kk_handle_type;//test
  Teuchos::RCP<kk_handle_type> KernelHandle_;




  RBILUK (const Teuchos::RCP<const row_matrix_type>& A_in);

  RBILUK (const Teuchos::RCP<const block_crs_matrix_type>& A_in);
 
 private:
  RBILUK (const RBILUK<MatrixType> & src);
 
 public:

  virtual ~RBILUK ();

  void initialize ();

  void compute ();


 
  // Declare that we intend to overload RILUK::setMatrix, not hide it.
  // This avoids build warnings that the method below "hides
  // overloaded virtual function" (e.g., Clang 3.5).
  //
  // NOTE: If the base class of this class changes, e.g., if its
  // template parameter changes, then be sure to change the code below
  // to refer to the proper base class.
  using RILUK<Tpetra::RowMatrix<typename MatrixType::scalar_type,
                                typename MatrixType::local_ordinal_type,
                                typename MatrixType::global_ordinal_type,
                                typename MatrixType::node_type> >::setMatrix;

  void
  setMatrix (const Teuchos::RCP<const block_crs_matrix_type>& A);



  std::string description () const;



  void
  apply (const Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>& X,
         Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>& Y,
         Teuchos::ETransp mode = Teuchos::NO_TRANS,
         scalar_type alpha = Teuchos::ScalarTraits<scalar_type>::one (),
         scalar_type beta = Teuchos::ScalarTraits<scalar_type>::zero ()) const;
 
public:

  Teuchos::RCP<const block_crs_matrix_type> getBlockMatrix () const;

  const block_crs_matrix_type& getLBlock () const;

  const block_crs_matrix_type& getDBlock () const;

  const block_crs_matrix_type& getUBlock () const;
 
private:
  typedef Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> MV;
  typedef Teuchos::ScalarTraits<impl_scalar_type> STS;
  typedef Teuchos::ScalarTraits<magnitude_type> STM;
  typedef typename block_crs_matrix_type::little_block_type little_block_type;
  typedef typename block_crs_matrix_type::little_block_host_type little_block_host_type;
  typedef typename block_crs_matrix_type::little_vec_type little_vec_type;
  typedef typename block_crs_matrix_type::little_host_vec_type little_host_vec_type;
  typedef typename block_crs_matrix_type::const_host_little_vec_type const_host_little_vec_type;
 
  using local_inds_host_view_type = typename block_crs_matrix_type::local_inds_host_view_type;
  using values_host_view_type     = typename block_crs_matrix_type::values_host_view_type;
  using local_inds_device_view_type = typename block_crs_matrix_type::local_inds_device_view_type;
  using values_device_view_type     = typename block_crs_matrix_type::values_device_view_type;
 
  void allocate_L_and_U_blocks();
  void initAllValues ();

  local_ordinal_type blockSize_;

  Teuchos::RCP<block_crs_matrix_type> L_block_;
  Teuchos::RCP<block_crs_matrix_type> U_block_;
  Teuchos::RCP<block_crs_matrix_type> D_block_;

  Teuchos::RCP<block_crs_matrix_type> D_block_inverse_;
};
 
 
} // namepsace Experimental
 
} // namespace Ifpack2
 
#endif /* IFPACK2_EXPERIMENTALCRSRBILUK_DECL_HPP */