Amesos2_Basker_decl.hpp

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// @HEADER
// *****************************************************************************
//           Amesos2: Templated Direct Sparse Solver Package
//
// Copyright 2011 NTESS and the Amesos2 contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef AMESOS2_BASKER_DECL_HPP
#define AMESOS2_BASKER_DECL_HPP

#include "Amesos2_SolverTraits.hpp"
#include "Amesos2_SolverCore.hpp"
#include "Amesos2_Basker_FunctionMap.hpp"

//Note:  We got an error while being a class variable and mutable.  Need to comeback and fix!!


namespace Amesos2 {

template <class Matrix,class Vector>
class Basker : public SolverCore<Amesos2::Basker, Matrix, Vector>
{
  friend class SolverCore<Amesos2::Basker,Matrix,Vector>; // Give our base access
                                                          // to our private
                                                          // implementation funcs
public:

  static const char* name;      // declaration. Initialization outside.


  typedef Amesos2::Basker<Matrix,Vector>                               type;

  typedef SolverCore<Amesos2::Basker,Matrix,Vector>              super_type;

  // Since typedef's are not inheritted, go grab them
  typedef typename super_type::scalar_type                      scalar_type;
  typedef typename super_type::local_ordinal_type        local_ordinal_type;
  typedef typename super_type::global_ordinal_type      global_ordinal_type;
  typedef typename super_type::global_size_type            global_size_type;
  typedef typename super_type::node_type                          node_type;

  typedef TypeMap<Amesos2::Basker,scalar_type>                     type_map;

  typedef typename type_map::type                               basker_type;

  typedef typename type_map::dtype                             basker_dtype;

  typedef FunctionMap<Amesos2::Basker,basker_type>             function_map;

  typedef Matrix                                                matrix_type;
  typedef MatrixAdapter<matrix_type>                    matrix_adapter_type;


  Basker( Teuchos::RCP<const Matrix> A,
          Teuchos::RCP<Vector>       X,
          Teuchos::RCP<const Vector> B);
  ~Basker( );


private:

  bool single_proc_optimization() const;

  int preOrdering_impl();


  int symbolicFactorization_impl();


  int numericFactorization_impl();


  int solve_impl(const Teuchos::Ptr<MultiVecAdapter<Vector> >       X,
                 const Teuchos::Ptr<const MultiVecAdapter<Vector> > B) const;


  bool matrixShapeOK_impl() const;


  void setParameters_impl(
    const Teuchos::RCP<Teuchos::ParameterList> & parameterList );


  Teuchos::RCP<const Teuchos::ParameterList> getValidParameters_impl() const;


  bool loadA_impl(EPhase current_phase);


  // Members
  int num_threads;

  typedef Kokkos::DefaultHostExecutionSpace HostSpaceType;
  typedef Kokkos::View<local_ordinal_type*, HostSpaceType> host_ordinal_type_array;

  typedef Kokkos::View<basker_type*, HostSpaceType>     host_value_type_array;

  // The following Views are persisting storage arrays for A, X, and B
  host_value_type_array host_nzvals_view_;
  host_ordinal_type_array host_rows_view_;
  host_ordinal_type_array host_col_ptr_view_;

  bool is_contiguous_;

  typedef typename Kokkos::View<basker_type**, Kokkos::LayoutLeft, HostSpaceType>
    host_solve_array_t;

  mutable host_solve_array_t xValues_;

  mutable host_solve_array_t bValues_;

  /*Handle for Basker object*/
  mutable ::BaskerClassicNS::BaskerClassic<local_ordinal_type,basker_dtype> basker;

}; // End class Basker


// Specialize solver_traits struct for Basker
// TODO
template <>
struct solver_traits<Basker> {
#ifdef HAVE_TEUCHOS_COMPLEX
  typedef Meta::make_list6<float,
                           double,
                           Kokkos::complex<float>,
                           Kokkos::complex<double>,
                           std::complex<float>,
                           std::complex<double> > supported_scalars;
#else
  typedef Meta::make_list2<float, double> supported_scalars;
#endif
};

template <typename Scalar, typename LocalOrdinal, typename ExecutionSpace>
struct solver_supports_matrix<Basker,
  KokkosSparse::CrsMatrix<Scalar, LocalOrdinal, ExecutionSpace>> {
  static const bool value = true;
};

} // end namespace Amesos2

#endif  // AMESOS2_BASKER_DECL_HPP