`#include <Ifpack_SparseContainer.h>`

Inheritance diagram for Ifpack_SparseContainer< T >:

## Public Member Functions | |

virtual double | InitializeFlops () const |

Returns the flops in Compute(). | |

virtual double | ComputeFlops () const |

Returns the flops in Compute(). | |

virtual double | ApplyFlops () const |

Returns the flops in Apply(). | |

virtual double | ApplyInverseFlops () const |

Returns the flops in ApplyInverse(). | |

virtual ostream & | Print (std::ostream &os) const |

Prints basic information on iostream. This function is used by operator<<. | |

Ifpack_SparseContainer (const int NumRows, const int NumVectors=1) | |

Constructor. | |

Ifpack_SparseContainer (const Ifpack_SparseContainer< T > &rhs) | |

Copy constructor. | |

virtual | ~Ifpack_SparseContainer () |

Destructor. | |

Ifpack_SparseContainer & | operator= (const Ifpack_SparseContainer< T > &rhs) |

Operator =. | |

virtual int | NumRows () const |

Returns the number of rows of the matrix and LHS/RHS. | |

virtual int | NumVectors () const |

Returns the number of vectors in LHS/RHS. | |

virtual int | SetNumVectors (const int NumVectors_in) |

Sets the number of vectors for LHS/RHS. | |

virtual double & | LHS (const int i, const int Vector=0) |

Returns the i-th component of the vector Vector of LHS. | |

virtual double & | RHS (const int i, const int Vector=0) |

Returns the i-th component of the vector Vector of RHS. | |

virtual int & | ID (const int i) |

Returns the ID associated to local row i. | |

virtual int | SetMatrixElement (const int row, const int col, const double value) |

Set the matrix element (row,col) to `value` . | |

virtual bool | IsInitialized () const |

Returns `true` is the container has been successfully initialized. | |

virtual bool | IsComputed () const |

Returns `true` is the container has been successfully computed. | |

virtual int | SetParameters (Teuchos::ParameterList &List) |

Sets all necessary parameters. | |

virtual const char * | Label () const |

Returns the label of this container. | |

const Epetra_Map * | Map () const |

Returns a pointer to the internally stored map. | |

const Epetra_MultiVector * | LHS () const |

Returns a pointer to the internally stored solution multi-vector. | |

const Epetra_MultiVector * | RHS () const |

Returns a pointer to the internally stored rhs multi-vector. | |

const Epetra_CrsMatrix * | Matrix () const |

Returns a pointer to the internally stored matrix. | |

const Epetra_IntSerialDenseVector * | ID () const |

Returns a pointer to the internally stored ID's. | |

const T * | Inverse () const |

Returns a pointer to the internally stored inverse operator. | |

virtual int | Initialize () |

Initializes the container, by completing all the operations based on matrix structure. | |

virtual int | Compute (const Epetra_RowMatrix &Matrix_in) |

Finalizes the linear system matrix and prepares for the application of the inverse. | |

virtual int | Apply () |

Apply the matrix to RHS, result is stored in LHS. | |

virtual int | ApplyInverse () |

Apply the inverse of the matrix to RHS, result is stored in LHS. | |

virtual int | Destroy () |

Destroys all data. |

class Ifpack_SparseContainer< T >

To understand what an IFPACK container is, please refer to the documentation of the pure virtual class Ifpack_Container. Currently, containers are used by class Ifpack_BlockRelaxation.

Using block methods, one needs to store all diagonal blocks and to be also to apply the inverse of each diagonal block. Using class Ifpack_DenseContainer, one can store the blocks as sparse matrices (Epetra_CrsMatrix), which can be advantageous when the blocks are large. Otherwise, class Ifpack_DenseContainer is probably more appropriate.

Sparse containers are templated with a type T, which represent the class to use in the application of the inverse. (T is not used in Ifpack_DenseContainer). In SparseContainer, T must be an Ifpack_Preconditioner derived class. The container will allocate a `T`

object, use SetParameters() and Compute(), then use `T`

every time the linear system as to be solved (using the ApplyInverse() method of `T`

).

**Author:**- Marzio Sala, SNL 9214.

**Date:**- Last modified on Nov-04.

Definition at line 80 of file Ifpack_SparseContainer.h.

template<typename T>

int & Ifpack_SparseContainer< T >::ID | ( | const int | i |
) | ` [virtual]` |

Returns the ID associated to local row i.

The set of (local) rows assigned to this container is defined by calling ID(i) = j, where i (from 0 to NumRows()) indicates the container-row, and j indicates the local row in the calling process.

This is usually used to recorder the local row ID (on calling process) of the i-th row in the container.

Implements Ifpack_Container.

Definition at line 501 of file Ifpack_SparseContainer.h.

template<typename T>

int Ifpack_SparseContainer< T >::Initialize | ( | ) | ` [virtual]` |

Initializes the container, by completing all the operations based on matrix structure.

**Note:**- After a call to Initialize(), no new matrix entries can be added.

Implements Ifpack_Container.

Definition at line 361 of file Ifpack_SparseContainer.h.

References Copy, Ifpack_SparseContainer< T >::Destroy(), and Epetra_IntSerialDenseMatrix::Reshape().

Referenced by Ifpack_SparseContainer< T >::Compute().

The documentation for this class was generated from the following file:

Generated on Tue Jul 13 09:27:15 2010 for IFPACK by 1.4.7