Isorropia_TpetraPartitioner.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
published by the Free Software Foundation; either version 2.1 of the
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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
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************************************************************************
*/
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#ifndef _Isorropia_TpetraPartitioner_hpp_
#define _Isorropia_TpetraPartitioner_hpp_


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



#ifdef HAVE_ISORROPIA_TPETRA
#include <Isorropia_TpetraOperator.hpp>
#include <Isorropia_Partitioner.hpp>
#include <Isorropia_TpetraZoltanLib.hpp>


#include <Kokkos_DefaultNode.hpp>
#include <Tpetra_CrsGraph_decl.hpp>
#include <Tpetra_RowMatrix.hpp>
#include <Tpetra_MultiVector_decl.hpp>

namespace Isorropia {

namespace Tpetra {




template <class Node=Kokkos::DefaultNode::DefaultNodeType>
class Partitioner : public Isorropia::Partitioner, public Isorropia::Tpetra::Operator<Node>  {
public:
  

  Partitioner(Teuchos::RCP<const ::Tpetra::CrsGraph<int,int,Node> > inputGraph,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),  
              bool compute_partitioning_now=true);

  Partitioner(const ::Tpetra::CrsGraph<int,int,Node> *inputGraph,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),  
              bool compute_partitioning_now=true);

  Partitioner(Teuchos::RCP<const ::Tpetra::CrsGraph<int,int,Node> > inputGraph,
              Teuchos::RCP<CostDescriber<Node> > costs,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(const ::Tpetra::CrsGraph<int,int,Node> *inputGraph,
              CostDescriber<Node> * costs,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(Teuchos::RCP<const ::Tpetra::RowMatrix<double,int,int,Node> > inputMatrix,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(const ::Tpetra::RowMatrix<double,int,int,Node> *inputMatrix,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(Teuchos::RCP<const ::Tpetra::RowMatrix<double,int,int,Node> > inputMatrix,
              Teuchos::RCP<CostDescriber<Node> > costs,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(const ::Tpetra::RowMatrix<double,int,int,Node> *inputMatrix,
              CostDescriber<Node>  *costs,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(Teuchos::RCP<const ::Tpetra::MultiVector<double,int,int,Node> > coords,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(const ::Tpetra::MultiVector<double,int,int,Node> *coords,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(Teuchos::RCP<const ::Tpetra::MultiVector<double,int,int,Node> > coords,
              Teuchos::RCP<const ::Tpetra::MultiVector<double,int,int,Node> > weights,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(const ::Tpetra::MultiVector<double,int,int,Node> *coords,
              const ::Tpetra::MultiVector<double,int,int,Node> *weights,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(Teuchos::RCP<const ::Tpetra::Map<int,int,Node> > inputMap,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);

  Partitioner(const ::Tpetra::Map<int,int,Node> *inputMap,
              const Teuchos::ParameterList& paramlist=Teuchos::ParameterList("EmptyParameterList"),
              bool compute_partitioning_now=true);


  // MMW: currently not supporting hiearchical partitioning





  virtual ~Partitioner();

   /* @ingroup partitioning_grp
    * Set the relative number of objects in each part.  The default is to
    * evenly divide objects across parts.  The numbers can be fractions of
    * one, or whole numbers.  Zoltan adds the values supplied and takes the sizes
    * as proportional to that whole.
    *
    * We make a copy of id and size lists.
    *
    * Caller should supply either global part IDs or local part IDs.
    * Part IDs are integers beginning at zero for the first part.
    *
    * No communication is done during this call.  One process can make the call
    * for all parts, or many processes can make the call.  Zoltan checks the
    * consistency of the information provided.
    */

  void setPartSizes(int len, int *global_part_id, float *part_size);

  /* @ingroup partitioning_grp
   * Free the memory allocated to store part sizes.
   */
  void clearPartSizes();

  void partition(bool force_repartitioning=false);

  virtual void compute(bool forceRecomputing=false);

  int numElemsInPart(int part) const {
    return (numElemsWithProperty(part));
  }

  void elemsInPart(int part, int* elementList, int len) const {
    elemsWithProperty(part, elementList, len);
  }

  Teuchos::RCP< ::Tpetra::Map<int,int,Node> > createNewMap();

  void createNewMap(::Tpetra::Map<int,int,Node> *&outputMap);

private:
  int *partGIDs;
  float *partSizes;
  int numPartSizes;

};//class Partitioner

}//namespace Tpetra
}//namespace Isorropia

#endif //HAVE_ISORROPIA_TPETRA

#endif