Ifpack2 Templated Preconditioning Package Version 1.0
Ifpack2_LinearPartitioner_def.hpp
00001 /*@HEADER
00002 // ***********************************************************************
00003 //
00004 //       Ifpack2: Tempated Object-Oriented Algebraic Preconditioner Package
00005 //                 Copyright (2009) 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 IFPACK2_LINEAR_PARTITIONER_DEF_HPP
00031 #define IFPACK2_LINEAR_PARTITIONER_DEF_HPP
00032 #include "Ifpack2_ConfigDefs.hpp"
00033 #include "Ifpack2_LinearPartitioner_decl.hpp"
00034 
00035 namespace Ifpack2 {
00036 
00037 //==============================================================================
00038 // Constructor
00039 template<class GraphType>
00040 LinearPartitioner<GraphType>::LinearPartitioner(const Teuchos::RCP<const Tpetra::RowGraph<LocalOrdinal,GlobalOrdinal,Node> >& Graph) :
00041   OverlappingPartitioner<GraphType>(Graph)
00042 {
00043 }
00044 //==============================================================================
00045 // Destructor.
00046 template<class GraphType>
00047 LinearPartitioner<GraphType>::~LinearPartitioner()
00048 {
00049 }
00050 
00051 //==============================================================================
00053 template<class GraphType>
00054 void LinearPartitioner<GraphType>::setPartitionParameters(Teuchos::ParameterList& List)
00055 {
00056 }
00057 
00058 //==============================================================================
00059 template<class GraphType>
00060 void LinearPartitioner<GraphType>::LinearPartitioner::computePartitions()
00061 {
00062   
00063   int mod = this->Graph_->getNodeNumRows() / this->NumLocalParts_;
00064   for (size_t i = 0 ; i < this->Graph_->getNodeNumRows() ; ++i) {
00065     this->Partition_[i] = i / mod;
00066     if (this->Partition_[i] >= this->NumLocalParts_)
00067       this->Partition_[i] = this->NumLocalParts_ - 1;
00068   }
00069 }
00070 
00071 
00072 }// namespace Ifpack2
00073 
00074 #endif // IFPACK2_LINEARPARTITIONER_DEF_HPP
00075 
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends