Amesos_Dscpack.h

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// ***********************************************************************
// 
//                Amesos: Direct Sparse Solver Package
//                 Copyright (2004) 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
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// 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
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#ifndef AMESOS_DSCPACK_H
#define AMESOS_DSCPACK_H

#include "Amesos_ConfigDefs.h"
#include "Amesos_BaseSolver.h"
#include "Amesos_NoCopiable.h"
#include "Amesos_Utils.h"
#include "Amesos_Time.h"
#include "Amesos_Status.h"
#include "Amesos_Control.h"
#include "Epetra_LinearProblem.h"
#include "Epetra_Comm.h"
#include "Epetra_Import.h"
#include "Teuchos_RCP.hpp"

// Amesos_Dscpack_Pimpl contains a pointer to the structure defined in 
// dscmain.h.  This prevents Amesos_Dscpack.h from having to include dscmain.h.
//
//  Doxygen does not handle forward class references well.
#ifndef DOXYGEN_SHOULD_SKIP_THIS
class Amesos_Dscpack_Pimpl ; 
#endif



class Amesos_Dscpack: public Amesos_BaseSolver, 
                      private Amesos_Time, 
                      private Amesos_NoCopiable, 
                      private Amesos_Utils, 
                      private Amesos_Control, 
                      private Amesos_Status { 

public: 


  Amesos_Dscpack(const Epetra_LinearProblem& LinearProblem );


  ~Amesos_Dscpack(void);


  int SymbolicFactorization() ;

  int NumericFactorization() ;

  int Solve();



  const Epetra_LinearProblem *GetProblem() const { return(Problem_); };


  bool MatrixShapeOK() const ;

  int SetUseTranspose(bool UseTranspose) 
  {
    return(0);
  }

  bool UseTranspose() const 
  {
    return(false);
  }

  const Epetra_Comm& Comm() const {return(GetProblem()->GetOperator()->Comm());};

  int SetParameters( Teuchos::ParameterList &ParameterList )  ;

  int NumSymbolicFact() const { return( Amesos_Status::NumSymbolicFact_ ); }

  int NumNumericFact() const { return( Amesos_Status::NumNumericFact_ ); }

  int NumSolve() const { return( Amesos_Status::NumSolve_ ); }

  void PrintTiming() const;
  
  void PrintStatus() const;
  
  void GetTiming( Teuchos::ParameterList &TimingParameterList ) const { Amesos_Time::GetTiming(TimingParameterList); }


private:  
  
  const Epetra_Import& Importer() const
  {
    return(*Importer_.get());
  }

  const Epetra_Map& DscRowMap() const
  {
    return(*DscRowMap_.get());
  }

  const Epetra_Map& DscColMap() const
  {
    return(*DscColMap_.get());
  }

  int PerformSymbolicFactorization();

  int PerformNumericFactorization();

  const Epetra_LinearProblem * Problem_;

  Teuchos::RCP<Amesos_Dscpack_Pimpl> PrivateDscpackData_; 

  bool FirstCallToSolve_;
  bool A_and_LU_built;
  int *GlobalStructNewColNum; 
  int *GlobalStructNewNum; 
  int *GlobalStructOwner;
  int *LocalStructOldNum;

  int MyDscRank;
  int DscNumProcs;
  int NumLocalCols;
  int NumGlobalCols;
  int NumLocalStructs;
  int NumLocalNonz ; 

  RCP<Epetra_Import> Importer_;
  RCP<Epetra_Map>    DscColMap_;
  RCP<Epetra_Map>    DscRowMap_;

  int MaxProcs_;
 
  int MtxRedistTime_, MtxConvTime_, VecRedistTime_;
  int SymFactTime_, NumFactTime_, SolveTime_, OverheadTime_;
  
  // track memory (as reported by DSCPACK routines)
  int TotalMemory_;                       // estimates of the total memory requirements
                                          // for the factorization step as a
            // whole number of Mbytes. As
            // reported in the manual, this is a
            // "fair" estimation, but not
            // accurate at the last byte.

  
};  // class Amesos_Dscpack  
#endif /* AMESOS_DSCPACK_H */