Graph Coloring Classes

EpetraExt has two classes for aiding with creating color maps.

• CrsGraph_MapColoring
• CrsGraph_MapColoringIndex

The first is the functor CrsGraph_MapColoring. Note than only the default constructor is currently supported. Once such an object is created, you can call it with an Epetra.CrsGraph argument to call a coloring algorithm and obtain an Epetra.MapColoring object.

The second class is the CrsGraph_MapColoringIndex functor. Use an Epetra.MapColoring object in the constructor and an Epetra.CrsGraph object as the argument when you call it.

Input Functions

• MatlabFileToCrsMatrix(str filename, Epetra.Comm) -> Epetra.CrsMatrix
• MatrixMarketFileToBlockMap(str filename, Epetra.Comm) -> Epetra.BlockMap
• MatrixMarketFileToBlockMaps(str filename, Epetra.Comm) -> (Epetra.BlockMap rowMap, Epetra.BlockMap colMap, Epetra.BlockMap rangeMap, Epetra.BlockMap domainMap)
• MatrixMarketFileToCrsMatrix(str filename, Epetra.Map rowMap, Epetra.Map colMap=None, Epetra.Map rangeMap=None, Epetra.Map domainMap=None) -> Epetra.CrsMatrix
• MatrixMarketFileToMap(str filename, Epetra.Comm) -> Epetra.Map
• MatrixMarketFileToMultiVector(str filename, Epetra.BlockMap) -> Epetra.MultiVector

Output Functions

• BlockMapToHandle(file handle, Epetra.BlockMap map) -> int
• BlockMapToMatrixMarketFile(str filename, Epetra.BlockMap map, str mapName=None, str descr=None, bool writeHeader=True) -> int
• MultiVectorToHandle(file handle, Epetra.MultiVector) -> int
• MultiVectorToMatlabFile(str filename, Epetra.MultiVector) -> int
• MultiVectorToMatlabHandle(file handle, Epetra.MultiVector) -> int
• MultiVectorToMatrixMarketFile(str filename, Epetra.MultiVector) -> int
• MultiVectorToMatrixMarketHandle(file handle, Epetra.MuiltiVector) -> int
• RowMatrixToHandle(file handle, Epetra.RowMatrix) -> int
• RowMatrixToMatlabFile(str filename, Epetra.RowMatrix) -> int
• RowMatrixToMatrixMarketFile(str filename, Epetra.RowMatrix) -> int

Input/Output Classes

• HDF5
• XMLReader
• XMLWriter

The HDF5 and XMLReader classes both support overloaded Read() methods in C++, but these cannot be type-disambiguated in python. Therefore, the Read() methods are ignored and replaced with python versions that have the type name in the method. Therefore, if obj is an HDF5 or XMLReader object, then, these methods are supported:

• obj.ReadMap(str) -> Epetra.Map
• obj.ReadMultiVector(str) -> Epetra.MultiVector
• obj.ReadCrsGraph(str) -> Epetra.CrsGraph
• obj.ReadCrsMatrix(str) -> Epetra.CrsMatrix

In addition, the HDF5 objects support the following additional methods:

• obj.ReadBlockMap(str) -> Epetra.BlockMap
• obj.ReadIntVector(str) -> Epetra.IntVector

Matrix-Matrix Functions

So far, only addition and multiplication are supported:

• Add(Epetra.CrsMatrix A, bool flag, float valA, Epetra.CrsMatrix B, float valB) -> int

  Compute B <- valA * A + valB * B. If flag is True, use the transpose of A. B must either have the structure of A+B or not yet have FillComplete() called on it.

• Multiply(Epetra.CrsMatrix A, bool transposeA, `` ``Epetra.CrsMatrix B, bool transposeB, Epetra.CrsMatrix C) -> int

  Compute C <- A * B, where transposeA and transposeB control the transposition of A and B respectively. C must have the structure of A * B, or not yet have FillComplete() called on it.