00001 /*@HEADER 00002 // *********************************************************************** 00003 // 00004 // Ifpack: Object-Oriented Algebraic Preconditioner Package 00005 // Copyright (2002) Sandia Corporation 00006 // 00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive 00008 // license for use of this work by or on behalf of the U.S. Government. 00009 // 00010 // This library is free software; you can redistribute it and/or modify 00011 // it under the terms of the GNU Lesser General Public License as 00012 // published by the Free Software Foundation; either version 2.1 of the 00013 // License, or (at your option) any later version. 00014 // 00015 // This library is distributed in the hope that it will be useful, but 00016 // WITHOUT ANY WARRANTY; without even the implied warranty of 00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00018 // Lesser General Public License for more details. 00019 // 00020 // You should have received a copy of the GNU Lesser General Public 00021 // License along with this library; if not, write to the Free Software 00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00023 // USA 00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 00025 // 00026 // *********************************************************************** 00027 //@HEADER 00028 */ 00029 00030 #ifndef IFPACK_METISPARTITIONER_H 00031 #define IFPACK_METISPARTITIONER_H 00032 00033 #include "Ifpack_ConfigDefs.h" 00034 #include "Ifpack_Partitioner.h" 00035 #include "Ifpack_OverlappingPartitioner.h" 00036 #include "Teuchos_ParameterList.hpp" 00037 class Ifpack_Graph; 00038 class Epetra_Map; 00039 class Epetra_BlockMap; 00040 class Epetra_Import; 00041 00043 00052 class Ifpack_METISPartitioner : public Ifpack_OverlappingPartitioner { 00053 00054 public: 00055 00057 Ifpack_METISPartitioner(const Ifpack_Graph* Graph) : 00058 Ifpack_OverlappingPartitioner(Graph), 00059 UseSymmetricGraph_(true) 00060 {} 00061 00063 virtual ~Ifpack_METISPartitioner() {}; 00064 00066 int SetPartitionParameters(Teuchos::ParameterList& List) 00067 { 00068 // `true' is the safest option, as singletons may still be 00069 // in the system, even after Ifpack_SingletonFilter (think 00070 // for example to an upper triangular matrix, which has one 00071 // singleton, and still has one after the elimination of 00072 // the first one...) 00073 UseSymmetricGraph_ = List.get("partitioner: use symmetric graph", 00074 UseSymmetricGraph_); 00075 00076 return(0); 00077 } 00078 00080 int ComputePartitions(); 00081 00082 private: 00083 bool UseSymmetricGraph_; 00084 00085 }; // class Ifpack_METISPartitioner 00086 00087 #endif // IFPACK_METISPARTITIONER_H