Ifpack2 Templated Preconditioning Package  Version 1.0
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Ifpack2_LinePartitioner_decl.hpp
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42 
43 #ifndef IFPACK2_LINEPARTITIONER_DECL_HPP
44 #define IFPACK2_LINEPARTITIONER_DECL_HPP
45 
46 #include "Ifpack2_ConfigDefs.hpp"
47 #include "Ifpack2_OverlappingPartitioner.hpp"
48 #include "Tpetra_MultiVector.hpp"
49 
50 namespace Ifpack2 {
51 
53 
74 
76  template<class GraphType,class Scalar>
77 class LinePartitioner : public OverlappingPartitioner<GraphType> {
78 public:
79  typedef typename GraphType::local_ordinal_type local_ordinal_type;
80  typedef typename GraphType::global_ordinal_type global_ordinal_type;
81  typedef typename GraphType::node_type node_type;
82  typedef Tpetra::RowGraph<local_ordinal_type, global_ordinal_type, node_type> row_graph_type;
83  typedef Tpetra::MultiVector<double,local_ordinal_type, global_ordinal_type, node_type> multivector_type;
84 
85 
88 
90  virtual ~LinePartitioner();
91 
94 
96  void computePartitions();
97 
98 private:
99  // Useful functions
100  int Compute_Blocks_AutoLine(Teuchos::ArrayView<local_ordinal_type> blockIndices) const;
101  void local_automatic_line_search(int NumEqns, Teuchos::ArrayView <local_ordinal_type> blockIndices, local_ordinal_type last, local_ordinal_type next, local_ordinal_type LineID, double tol, Teuchos::Array<local_ordinal_type> itemp, Teuchos::Array<double> dtemp) const;
102 
103 
104 
105  // User data
106  int NumEqns_;
108  double threshold_;
109 
110 };
111 
112 }// namespace Ifpack2
113 
114 #endif // IFPACK2_LINEPARTITIONER_DECL_HPP
LinePartitioner(const Teuchos::RCP< const row_graph_type > &graph)
Constructor.
Definition: Ifpack2_LinePartitioner_def.hpp:60
void computePartitions()
Compute the partitions.
Definition: Ifpack2_LinePartitioner_def.hpp:86
virtual ~LinePartitioner()
Destructor.
Definition: Ifpack2_LinePartitioner_def.hpp:66
Create overlapping partitions of a local graph.
Definition: Ifpack2_OverlappingPartitioner_decl.hpp:78
void setPartitionParameters(Teuchos::ParameterList &List)
Set the partitioner&#39;s parameters (none for linear partitioning).
Definition: Ifpack2_LinePartitioner_def.hpp:72
Ifpack2::LinePartitioner: A class to define partitions into a set of lines.
Definition: Ifpack2_LinePartitioner_decl.hpp:77