Ifpack2_LinearPartitioner_def.hpp

/*@HEADER
// ***********************************************************************
//
//       Ifpack2: Tempated Object-Oriented Algebraic Preconditioner Package
//                 Copyright (2009) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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#ifndef IFPACK2_LINEAR_PARTITIONER_DEF_HPP
#define IFPACK2_LINEAR_PARTITIONER_DEF_HPP
#include "Ifpack2_ConfigDefs.hpp"
#include "Ifpack2_LinearPartitioner_decl.hpp"

namespace Ifpack2 {

//==============================================================================
// Constructor
template<class GraphType>
LinearPartitioner<GraphType>::LinearPartitioner(const Teuchos::RCP<const Tpetra::RowGraph<LocalOrdinal,GlobalOrdinal,Node> >& Graph) :
  OverlappingPartitioner<GraphType>(Graph)
{
}
//==============================================================================
// Destructor.
template<class GraphType>
LinearPartitioner<GraphType>::~LinearPartitioner()
{
}

//==============================================================================
template<class GraphType>
void LinearPartitioner<GraphType>::setPartitionParameters(Teuchos::ParameterList& List)
{
}
//==============================================================================
template<class GraphType>
void LinearPartitioner<GraphType>::LinearPartitioner::computePartitions()
{
  
  int mod = this->Graph_->getNodeNumRows() / this->NumLocalParts_;
  for (size_t i = 0 ; i < this->Graph_->getNodeNumRows() ; ++i) {
    this->Partition_[i] = i / mod;
    if (this->Partition_[i] >= this->NumLocalParts_)
      this->Partition_[i] = this->NumLocalParts_ - 1;
  }
}


}// namespace Ifpack2

#endif // IFPACK2_LINEARPARTITIONER_DEF_HPP