Amesos2_TpetraMultiVecAdapter_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_TPETRA_MULTIVEC_ADAPTER_DECL_HPP
#define AMESOS2_TPETRA_MULTIVEC_ADAPTER_DECL_HPP
 
#include <Teuchos_RCP.hpp>
#include <Teuchos_Array.hpp>
#include <Teuchos_as.hpp>
#include <Tpetra_MultiVector.hpp>
#include <Tpetra_Vector_decl.hpp>
 
#include "Amesos2_MultiVecAdapter_decl.hpp"
 
namespace Amesos2 {
 
  template< typename Scalar,
            typename LocalOrdinal,
            typename GlobalOrdinal,
            class    Node >
  class MultiVecAdapter<Tpetra::MultiVector<Scalar,
                                            LocalOrdinal,
                                            GlobalOrdinal,
                                            Node> >
  {
  public:
    // public type definitions
    typedef Tpetra::MultiVector<Scalar,
                                LocalOrdinal,
                                GlobalOrdinal,
                                Node>       multivec_t;
    typedef Scalar                          scalar_t;
    typedef LocalOrdinal                    local_ordinal_t;
    typedef GlobalOrdinal                   global_ordinal_t;
    typedef Node                            node_t;
    typedef Tpetra::global_size_t           global_size_t;
    typedef typename multivec_t::dual_view_type::t_host::value_type host_value_t;
 
    friend Teuchos::RCP<MultiVecAdapter<multivec_t> > createMultiVecAdapter<> (Teuchos::RCP<multivec_t>);
    friend Teuchos::RCP<const MultiVecAdapter<multivec_t> > createConstMultiVecAdapter<> (Teuchos::RCP<const multivec_t>);
 
    static const char* name;
 
  protected:
    // Do not allow direct construction of MultiVecAdapter's.  Only
    // allow construction through the non-member friend functions.
 
    MultiVecAdapter( const MultiVecAdapter<multivec_t>& adapter );
 
    MultiVecAdapter( const Teuchos::RCP<multivec_t>& m );
 
 
  public:
 
    ~MultiVecAdapter()
    { }
 
 
    bool isLocallyIndexed() const
    {
      if(getComm()->getSize() == 1){
        return true;
      } // There may be other conditions to check
      return false;
    }
 
    // TODO
    bool isGloballyIndexed() const;
 
 
    Teuchos::RCP<const Tpetra::Map<
                         local_ordinal_t,
                         global_ordinal_t,
                         node_t > >
    getMap() const
    {
      return mv_->getMap();
    }
 
    Teuchos::RCP<const Teuchos::Comm<int> > getComm() const
    {
      return mv_->getMap()->getComm();
    }
 
    size_t getLocalLength() const
    {
      return Teuchos::as<size_t>(mv_->getLocalLength());
    }
 
 
    size_t getLocalNumVectors() const
    {
      return mv_->getNumVectors();
    }
 
 
    global_size_t getGlobalLength() const
    {
      return mv_->getGlobalLength();
      //return getMap()->getMaxAllGlobalIndex() + 1;
    }
 
 
    global_size_t getGlobalNumVectors() const
    {
      return Teuchos::as<global_size_t>(mv_->getNumVectors());
    }
 
 
    size_t getStride() const
    {
      return mv_->getStride();
    }
 
 
    bool isConstantStride() const
    {
      return mv_->isConstantStride();
    }
 
 
    Teuchos::RCP<const Tpetra::Vector<scalar_t,local_ordinal_t,global_ordinal_t,node_t> >
    getVector( size_t j ) const
    {
      return mv_->getVector(j);
    }
 
 
    Teuchos::RCP<Tpetra::Vector<scalar_t,local_ordinal_t,global_ordinal_t,node_t> >
    getVectorNonConst( size_t j )
    {
      return mv_->getVectorNonConst(j);
    }
 
    typename multivec_t::impl_scalar_type * getMVPointer_impl() const;
 
    Teuchos::RCP<multivec_t>
    clone() const;
 
    void
    get1dCopy (const Teuchos::ArrayView<scalar_t>& A,
               size_t lda,
               Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,
                                              global_ordinal_t,
                                              node_t> > distribution_map,
                                              EDistribution distribution) const;
 
    template<typename KV>
    bool
    get1dCopy_kokkos_view (bool bInitialize, KV& v,
               size_t lda,
               Teuchos::Ptr<const Tpetra::Map<local_ordinal_t,
                                              global_ordinal_t,
                                              node_t> > distribution_map,
                                              EDistribution distribution) const;
 
    Teuchos::ArrayRCP<scalar_t> get1dViewNonConst (bool local = false);
 
    void
    put1dData (const Teuchos::ArrayView<const scalar_t>& new_data,
               size_t lda,
               Teuchos::Ptr< const Tpetra::Map<local_ordinal_t,
                                        global_ordinal_t,
                                        node_t> > source_map,
                                        EDistribution distribution );
 
    template<typename KV>
    void
    put1dData_kokkos_view (KV& kokkos_new_data,
               size_t lda,
               Teuchos::Ptr< const Tpetra::Map<local_ordinal_t,
                                        global_ordinal_t,
                                        node_t> > source_map,
                                        EDistribution distribution );
 
    template<typename KV, typename host_ordinal_type_array>
    LocalOrdinal
    gather (KV& kokkos_new_view,
            host_ordinal_type_array &perm_g2l,
            host_ordinal_type_array &recvCountRows,
            host_ordinal_type_array &recvDisplRows,
            EDistribution distribution) const;
 
    template<typename KV, typename host_ordinal_type_array>
    LocalOrdinal
    scatter (KV& kokkos_new_view,
             host_ordinal_type_array &perm_g2l,
             host_ordinal_type_array &recvCountRows,
             host_ordinal_type_array &recvDisplRows,
             EDistribution distribution) const;
 
 
    std::string description () const;
 
    void
    describe (Teuchos::FancyOStream& os,
              const Teuchos::EVerbosityLevel verbLevel =
              Teuchos::Describable::verbLevel_default) const;
 
  private:
    Teuchos::RCP<multivec_t> mv_;
    mutable typename multivec_t::host_view_type buf_;
 
    typedef Tpetra::Export<local_ordinal_t, global_ordinal_t, node_t> export_type;
 
    typedef Tpetra::Import<local_ordinal_t, global_ordinal_t, node_t> import_type;
 
    mutable Teuchos::RCP<export_type> exporter_;
 
    mutable Teuchos::RCP<import_type> importer_;
  }; // end class MultiVecAdapter<Tpetra::MultiVector>
 
} // end namespace Amesos2
 
 
#endif // AMESOS2_TPETRA_MULTIVEC_ADAPTER_DECL_HPP