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Epetra_LinearProblemRedistor.h
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00001 /*
00002 //@HEADER
00003 // ************************************************************************
00004 // 
00005 //               Epetra: Linear Algebra Services Package 
00006 //                 Copyright 2001 Sandia Corporation
00007 // 
00008 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00009 // the U.S. Government retains certain rights in this software.
00010 //
00011 // Redistribution and use in source and binary forms, with or without
00012 // modification, are permitted provided that the following conditions are
00013 // met:
00014 //
00015 // 1. Redistributions of source code must retain the above copyright
00016 // notice, this list of conditions and the following disclaimer.
00017 //
00018 // 2. Redistributions in binary form must reproduce the above copyright
00019 // notice, this list of conditions and the following disclaimer in the
00020 // documentation and/or other materials provided with the distribution.
00021 //
00022 // 3. Neither the name of the Corporation nor the names of the
00023 // contributors may be used to endorse or promote products derived from
00024 // this software without specific prior written permission.
00025 //
00026 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
00027 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00028 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00029 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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00037 //
00038 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
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00042 */
00043 
00044 #ifndef EPETRA_LINEARPROBLEMREDISTOR_H
00045 #define EPETRA_LINEARPROBLEMREDISTOR_H
00046 
00047 class Epetra_Map; 
00048 class Epetra_Export;
00049 class Epetra_LinearProblem;
00050 class Epetra_RowMatrixTransposer;
00051 
00053 
00066 class Epetra_LinearProblemRedistor {
00067     
00068   public:
00069 
00071 
00072 
00073 
00081   Epetra_LinearProblemRedistor(Epetra_LinearProblem * OrigProblem, const Epetra_Map & RedistMap);
00082 
00084 
00095   Epetra_LinearProblemRedistor(Epetra_LinearProblem * OrigProblem, int NumProc, bool Replicate);
00096 
00098   
00099   Epetra_LinearProblemRedistor(const Epetra_LinearProblemRedistor& Source);
00100   
00102   
00103   virtual ~Epetra_LinearProblemRedistor();
00105   
00107 
00108   
00110 
00140   int CreateRedistProblem(const bool ConstructTranspose, const bool MakeDataContiguous, 
00141                           Epetra_LinearProblem *& RedistProblem);
00142 
00143   
00145 
00157   int UpdateRedistProblemValues(Epetra_LinearProblem * ProblemWithNewValues);
00158 
00160 
00171   int UpdateRedistRHS(Epetra_MultiVector * RHSWithNewValues);
00173   
00175 
00176 
00177 
00187   int UpdateOriginalLHS(Epetra_MultiVector * LHS);
00189   
00191 
00192 
00193 
00197   const Epetra_Map & RedistMap() const {return(*RedistMap_);};
00198   
00200 
00204   const Epetra_Export & RedistExporter()  const {return(*RedistExporter_);};
00206   
00208 
00209 
00211 
00215   int ExtractHbData(int & M, int & N, int & nz, int * & ptr, int * & ind, 
00216                     double * & val, int & Nrhs, double * & rhs, int & ldrhs, 
00217                                                 double * & lhs, int & ldlhs) const;
00219   
00221 
00222   
00224   virtual void Print(ostream & os) const;
00226   
00227  private: 
00228   int GenerateRedistMap();
00229 
00230   Epetra_LinearProblem * OrigProblem_;
00231   int NumProc_;
00232   Epetra_LinearProblem * RedistProblem_;
00233   Epetra_Map * RedistMap_;
00234   Epetra_RowMatrixTransposer * Transposer_;
00235   Epetra_Export * RedistExporter_;
00236 
00237   bool Replicate_;
00238   bool ConstructTranspose_;
00239   bool MakeDataContiguous_;
00240   bool MapGenerated_;
00241   bool RedistProblemCreated_;
00242 
00243   mutable int * ptr_;
00244     
00245 
00246 };
00247 
00248 #endif /* EPETRA_LINEARPROBLEMREDISTOR_H */
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