Isorropia_Tpetra.hpp

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/*
************************************************************************

              Isorropia: Partitioning and Load Balancing Package
                Copyright (2006) 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.

This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
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*/
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#ifndef _Isorropia_Tpetra_hpp_
#define _Isorropia_Tpetra_hpp_

#include <Isorropia_ConfigDefs.hpp>
#include <Teuchos_RCP.hpp>
#include <Teuchos_ParameterList.hpp>

#include <Isorropia_TpetraRedistributor.hpp>

#ifdef HAVE_ISORROPIA_TPETRA
#include <Tpetra_MultiVector_decl.hpp>
#include <Tpetra_CrsGraph_decl.hpp>
#include <Tpetra_CrsMatrix_decl.hpp>
#include <Kokkos_DefaultNode.hpp>
#endif

namespace Isorropia {

namespace Tpetra {


#ifdef HAVE_ISORROPIA_TPETRA

template <typename Node>
::Tpetra::MultiVector<double,int,int,Node> *
createBalancedCopy(const ::Tpetra::MultiVector<double,int,int,Node>& input_vector);

template <typename Node>
::Tpetra::MultiVector<double,int,int,Node> *
createBalancedCopy(const ::Tpetra::MultiVector<double,int,int,Node>& input_vector,
                     const Teuchos::ParameterList& paramlist);

template <typename Node>
::Tpetra::CrsGraph<int,int,Node>  *
createBalancedCopy(const ::Tpetra::CrsGraph<int,int,Node> & input_graph);

template <typename Node>
::Tpetra::CrsGraph<int,int,Node>  *
createBalancedCopy(const ::Tpetra::CrsGraph<int,int,Node> & input_graph,
                     const Teuchos::ParameterList& paramlist);

template <typename Node>
::Tpetra::CrsMatrix<double,int,int,Node> *
createBalancedCopy(const ::Tpetra::CrsMatrix<double,int,int,Node>& input_matrix);

template <typename Node>
::Tpetra::CrsMatrix<double,int,int,Node> *
createBalancedCopy(const ::Tpetra::CrsMatrix<double,int,int,Node>& input_matrix,
                     const Teuchos::ParameterList& paramlist);

template <typename Node>
Teuchos::RCP< ::Tpetra::CrsMatrix<double,int,int,Node> >
  redistribute_rows(const ::Tpetra::CrsMatrix<double,int,int,Node>& input_matrix,
                    const ::Tpetra::Map<int,int,Node>& target_rowmap,
                    ::Tpetra::Import<int,int,Node> * importer=0);

template <typename Node>
Teuchos::RCP< ::Tpetra::CrsMatrix<double,int,int,Node> >
  redistribute_rows(const ::Tpetra::RowMatrix<int,int,Node> & input_matrix,
                    const ::Tpetra::Map<int,int,Node>& target_rowmap,
                    ::Tpetra::Import<int,int,Node> * importer=0);

template <typename Node>
Teuchos::RCP< ::Tpetra::CrsGraph<int,int,Node> >
  redistribute_rows(const ::Tpetra::CrsGraph<int,int,Node> & input_graph,
                    const ::Tpetra::Map<int,int,Node>& target_rowmap,
                    ::Tpetra::Import<int,int,Node> * importer=0);

template <typename Node>
Teuchos::RCP< ::Tpetra::MultiVector<double,int,int,Node> >
  redistribute(const ::Tpetra::MultiVector<double,int,int,Node>& input,
               const ::Tpetra::Map<int,int,Node> & target_map,
               ::Tpetra::Import<int,int,Node> * importer=0);

template <typename Node>
Teuchos::RCP< ::Tpetra::Vector<double,int,int,Node> >
     redistribute(const ::Tpetra::Vector<double,int,int,Node>& input,
                  const ::Tpetra::Map<int,int,Node>& target_map,
                  ::Tpetra::Import<int,int,Node> * importer=0);

#ifndef DOXYGEN_SHOULD_SKIP_THIS

template <typename Node>
::Tpetra::MultiVector<double,int,int,Node>* create_row_weights_nnz(const ::Tpetra::RowMatrix<int,int,Node> & input_matrix);

template <typename Node>
::Tpetra::MultiVector<double,int,int,Node>* create_row_weights_nnz(const ::Tpetra::CrsGraph<int,int,Node> & input_graph);

template <typename Node>
::Tpetra::MultiVector<double,int,int,Node>* create_unit_weights(const ::Tpetra::MultiVector<double,int,int,Node>& input_coords);


template <typename Node>
int repartition(const ::Tpetra::Map<int,int,Node> & input_map,
      const ::Tpetra::MultiVector<double,int,int,Node>& weights,
      std::vector<int>& myNewElements,
      int& exportsSize,
      std::vector<int>& imports);

template <typename Node>
void gather_all_proc_global_offsets(const ::Tpetra::Map<int,int,Node> & blkmap,
                                    std::vector<int>& all_proc_offsets);


double compute_imbalance(int nprocs, std::vector<int> &offsets, 
                         double *wgts, double target);

#endif //DOXYGEN_SHOULD_SKIP_THIS
#endif //HAVE_ISORROPIA_TPETRA

}//namespace Tpetra
}//namespace Isorropia

#endif