Isorropia_Epetra.hpp

//@HEADER
/*
************************************************************************

              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
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
Questions? Contact Alan Williams (william@sandia.gov)
                or Erik Boman    (egboman@sandia.gov)

************************************************************************
*/
//@HEADER

#ifndef _Isorropia_Epetra_hpp_
#define _Isorropia_Epetra_hpp_

#include <Isorropia_configdefs.hpp>
#include <Teuchos_RefCountPtr.hpp>
#include <Teuchos_ParameterList.hpp>

#ifdef HAVE_EPETRA
class Epetra_Comm;
class Epetra_Map;
class Epetra_BlockMap;
class Epetra_Import;
class Epetra_Vector;
class Epetra_MultiVector;
class Epetra_RowMatrix;
class Epetra_CrsGraph;
class Epetra_CrsMatrix;
class Epetra_LinearProblem;
#endif

namespace Isorropia {
  class Partitioner;
  class CostDescriber;

namespace Epetra {

#ifdef HAVE_EPETRA

Teuchos::RefCountPtr<Isorropia::Partitioner>
create_partitioner(Teuchos::RefCountPtr<const Epetra_CrsGraph> input_graph,
       const Teuchos::ParameterList& paramlist);

Teuchos::RefCountPtr<Isorropia::Partitioner>
create_partitioner(Teuchos::RefCountPtr<const Epetra_CrsGraph> input_graph,
       Teuchos::RefCountPtr<const Isorropia::CostDescriber> costs,
       const Teuchos::ParameterList& paramlist);

Teuchos::RefCountPtr<Isorropia::Partitioner>
create_partitioner(Teuchos::RefCountPtr<const Epetra_RowMatrix> input_matrix,
       const Teuchos::ParameterList& paramlist);

Teuchos::RefCountPtr<Isorropia::Partitioner>
create_partitioner(Teuchos::RefCountPtr<const Epetra_RowMatrix> input_matrix,
       Teuchos::RefCountPtr<const Isorropia::CostDescriber> costs,
       const Teuchos::ParameterList& paramlist);

Teuchos::RefCountPtr<Epetra_Map>
create_target_map(const Epetra_Comm& comm, Partitioner& partitioner);

Teuchos::RefCountPtr<Epetra_CrsMatrix>
  create_balanced_copy(const Epetra_CrsMatrix& input_matrix,
                     Teuchos::ParameterList& paramlist);

Teuchos::RefCountPtr<Epetra_CrsMatrix>
create_balanced_copy(const Epetra_RowMatrix& input_matrix);

Teuchos::RefCountPtr<Epetra_CrsMatrix>
  create_balanced_copy(const Epetra_CrsMatrix& input_matrix,
                       const Epetra_Vector& row_weights);

Teuchos::RefCountPtr<Epetra_CrsMatrix>
  create_balanced_copy(const Epetra_RowMatrix& input_matrix,
                       const Epetra_Vector& row_weights);

Teuchos::RefCountPtr<Epetra_CrsGraph>
create_balanced_copy(const Epetra_CrsGraph& input_graph,
                     Teuchos::ParameterList& paramlist);

Teuchos::RefCountPtr<Epetra_CrsGraph>
  create_balanced_copy(const Epetra_CrsGraph& input_graph,
                       const Epetra_Vector& row_weights);

Teuchos::RefCountPtr<Epetra_LinearProblem>
  create_balanced_copy(const Epetra_LinearProblem& input_problem);

Teuchos::RefCountPtr<Epetra_CrsMatrix>
  redistribute_rows(const Epetra_CrsMatrix& input_matrix,
                    const Epetra_Map& target_rowmap,
                    Epetra_Import* importer=0);

Teuchos::RefCountPtr<Epetra_CrsMatrix>
  redistribute_rows(const Epetra_RowMatrix& input_matrix,
                    const Epetra_Map& target_rowmap,
                    Epetra_Import* importer=0);

Teuchos::RefCountPtr<Epetra_CrsGraph>
  redistribute_rows(const Epetra_CrsGraph& input_graph,
                    const Epetra_Map& target_rowmap,
                    Epetra_Import* importer=0);

Teuchos::RefCountPtr<Epetra_MultiVector>
  redistribute(const Epetra_MultiVector& input,
               const Epetra_BlockMap& target_map,
               Epetra_Import* importer=0);

Teuchos::RefCountPtr<Epetra_Vector>
  redistribute(const Epetra_Vector& input,
               const Epetra_Map& target_map,
               Epetra_Import* importer=0);

#ifndef DOXYGEN_SHOULD_SKIP_THIS

Epetra_Vector* create_row_weights_nnz(const Epetra_RowMatrix& input_matrix);

Epetra_Vector* create_row_weights_nnz(const Epetra_CrsGraph& input_graph);

int
repartition(const Epetra_BlockMap& input_map,
      const Epetra_Vector& weights,
            std::vector<int>& myNewElements,
            std::map<int,int>& exports,
            std::map<int,int>& imports);

void gather_all_proc_global_offsets(const Epetra_BlockMap& blkmap,
                                    std::vector<int>& all_proc_offsets);

#endif //DOXYGEN_SHOULD_SKIP_THIS
#endif //HAVE_EPETRA

}//namespace Epetra
}//namespace Isorropia

#endif