ml_epetra_utils.h File Reference

Interface to the Trilinos package Anasazi. More...

#include "ml_common.h"
#include "mpi.h"
#include "ml_include.h"
#include <iostream>

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Namespaces
namespace	Teuchos
Functions
int	ML_Epetra_matvec (ML_Operator *data, int in, double *p, int out, double *ap)
	Matrix-vector function for Epetra matrices.
int	ML_Epetra_RowMatrix_matvec (ML_Operator *data, int in, double *p, int out, double *ap)
int	ML_Epetra_CrsMatrix_matvec (ML_Operator *data, int in, double *p, int out, double *ap)
int	ML_Epetra_VbrMatrix_matvec (ML_Operator *data, int in, double *p, int out, double *ap)
int	Epetra_ML_GetCrsDataptrs (ML_Operator *data, double **values, int **cols, int **rowptr)
int	ML_Epetra_getrow (ML_Operator *data, int N_requested_rows, int requested_rows[], int allocated_space, int columns[], double values[], int row_lengths[])
	Getrow function for matrix of type Epetra_RowMatrix.
int	ML_Epetra_RowMatrix_getrow (ML_Operator *data, int N_requested_rows, int requested_rows[], int allocated_space, int columns[], double values[], int row_lengths[])
int	ML_Epetra_CrsMatrix_getrow (ML_Operator *data, int N_requested_rows, int requested_rows[], int allocated_space, int columns[], double values[], int row_lengths[])
int	ML_Epetra_VbrMatrix_getrow (ML_Operator *data, int N_requested_rows, int requested_rows[], int allocated_space, int columns[], double values[], int row_lengths[])
void	ML_Set_Filter (Teuchos::ParameterList &List)
int	ML_Epetra_matvec_Filter (ML_Operator *data, int in, double *p, int out, double *ap)
int	ML_Epetra_getrow_Filter (ML_Operator *data, int N_requested_rows, int requested_rows[], int allocated_space, int columns[], double values[], int row_lengths[])
int	ML_Epetra_comm_wrapper (double vec[], void *data)
	Update vec's ghost node via communication.
int	ML_Epetra_CrsMatrix_comm_wrapper (double vec[], void *data)
int	ML_Epetra_VbrMatrix_comm_wrapper (double vec[], void *data)
int	ML_Epetra_CrsGraph_comm_wrapper (double vec[], void *data)
int	ML_Epetra_CrsGraph_matvec (ML_Operator *data, int in, double *p, int out, double *ap)
int	ML_Epetra_CrsGraph_getrow (ML_Operator *data, int N_requested_rows, int requested_rows[], int allocated_space, int columns[], double values[], int row_lengths[])
int	ML_Operator_WrapEpetraCrsGraph (Epetra_CrsGraph *Graph, ML_Operator *newMatrix)
int	EpetraMatrix2MLMatrix (ML *ml_handle, int level, Epetra_RowMatrix *Amat)
	Wraps an Epetra_RowMatrix into an ML_Operators.
int	ML_Operator_WrapEpetraMatrix (Epetra_RowMatrix *A, ML_Operator *Result)
	Wraps an Epetra_RowMatrix into an ML_Operators, for the given level.
Epetra_CrsMatrix *	Epetra_MatrixMult (Epetra_RowMatrix *B, Epetra_RowMatrix *Bt)
	Multiplies two Epetra_RowMatrix's, returns the results as an Epetra_CrsMatrix.
Epetra_CrsMatrix *	Epetra_MatrixAdd (Epetra_RowMatrix *B, Epetra_RowMatrix *Bt, double scalar)
	Adds two Epetra_RowMatrix's, returns the result as an Epetra_CrsMatrix.
int	ML_Epetra_CRSinsert (ML_Operator *, int, int *, double *, int)
int	ML_Operator2EpetraCrsMatrix (ML_Operator *Ke, Epetra_CrsMatrix *&CrsMatrix, int &MaxNumNonzeros, bool CheckNonzeroRow, double &)
	Converts an ML_Operator into an Epetra_CrsMatrix.
int	ML_Operator2EpetraCrsMatrix (ML_Operator *Ke, Epetra_CrsMatrix *&CrsMatrix)
Epetra_Map *	Epetra_ML_readupdatevector (char *filename, Epetra_Comm &comm)
Epetra_CrsMatrix *	Epetra_ML_readaztecmatrix (char *filename, Epetra_Map &map, Epetra_Comm &comm)
int	ML_Operator_Destroy_DiscreteLaplacian ()
int	ML_Operator_DiscreteLaplacian (ML_Operator *Op, int SymmetricPattern, double *x_coord, double *y_coord, double *z_coord, double theta, ML_Operator **NewOp)
bool	Epetra_ML_readaztecvector (char *filename, Epetra_MultiVector &Vector, Epetra_Map &map, Epetra_Comm &comm, int ivec)
bool	Epetra_ML_readvariableblocks (char *filename, Epetra_Map &map, Epetra_Comm &comm, int **blocks, int **block_pde)
bool	Epetra_ML_writegidviz (char *filename, int label, Epetra_MultiVector &vector, int ivec, Epetra_Map &map, Epetra_Comm &comm)

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Detailed Description

Interface to the Trilinos package Anasazi.

Date:

Last update to Doxygen: 22-Jul-04

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Function Documentation

int EpetraMatrix2MLMatrix (  ML *  ml_handle, int  level, Epetra_RowMatrix *  Amat )

Wraps an Epetra_RowMatrix into an ML_Operators. This function creates an ML_Operator that is based on the input Epetra_RowMatrix. This is a "cheap" wrap in the sense that only function and pointers are created. Data is still coded as an Epetra_RowMatrix. Note: ML requires A->RowMatrixRowMap() == A->OperatorRangeMap()

int ML_Epetra_comm_wrapper (  double  vec[], void *  data )

Update vec's ghost node via communication. Update vec's ghost node via communication. Note: the length of vec is given by N_local + N_ghost where Amat was created via AZ_matrix_create(N_local); and a 'getrow' function was supplied via AZ_set_MATFREE_getrow(Amat,,,,N_ghost,). Parameters: vec  Vector containing data. On output, ghost values are updated. data  points to user's data containing matrix values. and communication information.

int ML_Epetra_getrow (  ML_Operator *  data, int  N_requested_rows, int  requested_rows[], int  allocated_space, int  columns[], double  values[], int  row_lengths[] )

Getrow function for matrix of type Epetra_RowMatrix. Supply local matrix (without ghost node columns) for rows given by requested_rows[0 ... N_requested_rows-1]. Return this information in 'row_lengths, columns, values'. If there is not enough space to complete this operation, return 0. Otherwise, return 1. Parameters: data  (In) Points to user's data containing matrix values. N_requested_rows  (In) Number of rows for which nonzero are to be returned. requested_rows  (In) Requested_rows[0...N_requested_rows-1] give the row indices of the rows for which nonzero values are returned. row_lengths  (Out) Row_lengths[i] is the number of nonzeros in the row 'requested_rows[i]' columns,values  (Out) Columns[k] and values[k] contains the column number and value of a matrix nonzero where all nonzeros for requested_rows[i] appear before requested_rows[i+1]'s nonzeros. NOTE: Arrays are of size 'allocated_space'. allocated_space  (In) Indicates the space available in 'columns' and 'values' for storing nonzeros. If more space is needed, return 0.

int ML_Epetra_matvec (  ML_Operator *  data, int  in, double *  p, int  out, double *  ap )

Matrix-vector function for Epetra matrices. This is the ML matrix-vector wrap for Epetra matrices.

int ML_Operator2EpetraCrsMatrix (  ML_Operator *  Ke, Epetra_CrsMatrix *&  CrsMatrix, int &  MaxNumNonzeros, bool  CheckNonzeroRow, double &  )

Converts an ML_Operator into an Epetra_CrsMatrix. This function creates a new Epetra_CrsMatrix, and inserts all the nonzero elements of the ML_Operator in it. This is an expensive conversion, in the sense that the Epetra_RowMatrix is a copy of the input ML_Operator. Note: This function can be used with rectangular matrices.

int ML_Operator_WrapEpetraMatrix (  Epetra_RowMatrix *  A, ML_Operator *  Result )

Wraps an Epetra_RowMatrix into an ML_Operators, for the given level. This function creates an ML_Operator that is based on the input Epetra_RowMatrix. This is a "cheap" wrap in the sense that only function and pointers are created. Data is still coded as an Epetra_RowMatrix. The ML_Operator is set in the specified level of the hierarchy. Note: ML requires A->RowMatrixRowMap() == A->OperatorRangeMap()

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