Amesos2_ShyLUBasker_decl.hpp

Go to the documentation of this file.

// @HEADER
//
// ***********************************************************************
//
//           Amesos2: Templated Direct Sparse Solver Package
//                  Copyright 2011 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// 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 AMESOS2_SHYLUBASKER_DECL_HPP
#define AMESOS2_SHYLUBASKER_DECL_HPP

#include "Amesos2_SolverTraits.hpp"
#include "Amesos2_SolverCore.hpp"
#include "Amesos2_ShyLUBasker_FunctionMap.hpp"

#include "shylubasker_decl.hpp"
#include "shylubasker_def.hpp"
#include "shylubasker_trilinos_decl.hpp"


namespace Amesos2 {

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

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


  typedef ShyLUBasker<Matrix,Vector>                           type;

  typedef SolverCore<Amesos2::ShyLUBasker,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::ShyLUBasker,scalar_type>            type_map;
  typedef typename type_map::type                              shylubasker_type;
  typedef typename type_map::dtype                             shylubasker_dtype;

  typedef typename type_map::type                              slu_type;

  typedef FunctionMap<Amesos2::ShyLUBasker,shylubasker_type>   function_map;

  typedef Matrix                                               matrix_type;
  typedef MatrixAdapter<matrix_type>                           matrix_adapter_type;

  typedef Kokkos::DefaultHostExecutionSpace                    HostExecSpaceType;
//  typedef Kokkos::View<local_ordinal_type*, HostExecSpaceType> host_size_type_array;
  typedef Kokkos::View<local_ordinal_type*, HostExecSpaceType> host_ordinal_type_array;
  typedef Kokkos::View<shylubasker_type*, HostExecSpaceType>   host_value_type_array;


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


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;

  // The following Kokkos::View's are persisting storage for A's CCS arrays
  host_value_type_array nzvals_view_;
  host_ordinal_type_array rowind_view_;
  host_ordinal_type_array colptr_view_;


  bool is_contiguous_;

  typedef typename Kokkos::View<shylubasker_type**, Kokkos::LayoutLeft, 
                                typename HostExecSpaceType::memory_space> host_solve_array_t;

  mutable host_solve_array_t xValues_;
  int ldx_;

  mutable host_solve_array_t bValues_;
  int ldb_;

    /*Handle for ShyLUBasker object*/
 
#if defined( HAVE_AMESOS2_KOKKOS ) && defined( KOKKOS_ENABLE_OPENMP )
  /*
  typedef typename node_type::device_type  kokkos_device;
  typedef typename kokkos_device::execution_space kokkos_exe;
  static_assert(std::is_same<kokkos_exe,Kokkos::OpenMP>::value,
  "Kokkos node type not support by experimental ShyLUBasker Amesos2");
  */
  typedef Kokkos::OpenMP Exe_Space;
   ::BaskerNS::BaskerTrilinosInterface<local_ordinal_type, shylubasker_dtype, Exe_Space> *ShyLUbasker;
#else
  #pragma message("Amesos_ShyLUBasker_decl Error: ENABLED SHYLU_NODEBASKER BUT NOT KOKKOS or NOT OPENMP!")
#endif


}; // End class ShyLUBasker


// Specialize solver_traits struct for ShyLUBasker
// TODO
template <>
struct solver_traits<ShyLUBasker> {
#ifdef HAVE_TEUCHOS_COMPLEX
/*
  typedef Meta::make_list4<float,
                           double,
                           std::complex<float>,
                           std::complex<double> > supported_scalars;
*/
  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<ShyLUBasker,
  KokkosSparse::CrsMatrix<Scalar, LocalOrdinal, ExecutionSpace>> {
  static const bool value = true;
};

} // end namespace Amesos2

#endif  // AMESOS2_SHYLUBASKER_DECL_HPP