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// Ifpack2: Tempated Object-Oriented Algebraic Preconditioner Package
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#ifndef IFPACK2_LINEARPARTITIONER_DECL_HPP
#define IFPACK2_LINEARPARTITIONER_DECL_HPP
#include "Ifpack2_ConfigDefs.hpp"
#include "Ifpack2_OverlappingPartitioner_decl.hpp"
namespace Ifpack2 {
/// \class LinearPartitioner
/*! \brief A class to define linear partitions
\tparam GraphType Specialization of Tpetra::RowGraph or Tpetra::CrsGraph.
This class places the rows of the local graph into nonintersecting groups. The number of groups is
given by \c NumLocalParts_, a member of the base class OverlappingPartitioner. Local row i is placed
in the group floor(i/NumLocalParts_), with the exception that any leftover rows are placed in the largest
group NumLocalParts_-1.
*/
template<class GraphType>
class LinearPartitioner : public OverlappingPartitioner<GraphType> {
public:
typedef typename GraphType::local_ordinal_type local_ordinal_type;
typedef typename GraphType::global_ordinal_type global_ordinal_type;
typedef typename GraphType::node_type node_type;
typedef Tpetra::RowGraph<local_ordinal_type, global_ordinal_type, node_type>
row_graph_type;
//! Constructor.
LinearPartitioner (const Teuchos::RCP<const row_graph_type>& graph);
//! Destructor.
virtual ~LinearPartitioner ();
//! Set the partitioner's parameters (none for linear partitioning).
void setPartitionParameters (Teuchos::ParameterList& List);
//! Compute the partitions.
void computePartitions ();
};
}// namespace Ifpack2
#endif // IFPACK2_LINEARPARTITIONER_DECL_HPP
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