Pliris Class Reference

Pliris: An Obect-Oriented Interface to a Dense LU Solver. More...

#include <Pliris.h>

Public Member Functions
	Pliris (Epetra_Vector *A, Epetra_MultiVector *X, Epetra_MultiVector *B)
	Pliris ()
	Pliris Default constructor.
int	SetLHS (Epetra_MultiVector *X)
	Pliris LHS Set.
int	SetRHS (Epetra_MultiVector *B)
	Pliris RHS Set.
int	SetMatrix (Epetra_Vector *A)
	Pliris Matrix Set.
int	SetMatrix (Epetra_SerialDenseVector *A)
	Pliris Matrix Set.
int	GetDistribution (int *nprocs_row, int *number_of_unknowns, int *nrhs, int *my_rows, int *my_cols, int *my_first_row, int *my_first_col, int *my_rhs, int *my_row, int *my_col)
	Pliris GetDistirbution.
int	FactorSolve (Epetra_Vector *A, int my_rows, int my_cols, int *matrix_size, int *num_procsr, int *num_rhs, double *secs)
	Pliris FactorSolve.
int	FactorSolve (Epetra_SerialDenseVector *AA, int my_rows, int my_cols, int *matrix_size, int *num_procsr, int *num_rhs, double *secs)
	Pliris FactorSolve.
int	Factor (Epetra_Vector *A, int *matrix_size, int *num_procsr, int *permute, double *secs)
	Pliris Factor.
int	Solve (int *permute, int *num_rhs)
	Pliris Solve.
virtual	~Pliris (void)
	Pliris Default Destructor.

Protected Attributes
double *	x_
double *	a_
double *	b_
int	x_LDA_
int	b_LDA_
bool	inConstructor_
Epetra_MultiVector *	X_
Epetra_MultiVector *	B_
Epetra_Vector *	A_
Epetra_SerialDenseVector *	AA_

Detailed Description

Pliris: An Obect-Oriented Interface to a Dense LU Solver.

The Pliris class : Provides the functionality to interface to a dense LU

Constructor & Destructor Documentation

~Pliris()

Pliris::~Pliris ( void  )

virtual

Pliris Default Destructor.

Completely deletes a Pliris object.

Member Function Documentation

Factor()

int Pliris::Factor	(	Epetra_Vector *	A,
		int *	matrix_size,
		int *	num_procsr,
		int *	permute,
		double *	secs
	)

Pliris Factor.

Factors the dense matrix

Parameters

A(In)	– Epetra Vector that has the matrix packed
matrix_size(In)	– order of the dense matrix
num_procsr(In)	– number of processors for a row
permute(In)	– permutation matrix
secs(Out)	– factor and solve time in seconds

References SetMatrix().

FactorSolve() [1/2]

int Pliris::FactorSolve	(	Epetra_SerialDenseVector *	AA,
		int	my_rows,
		int	my_cols,
		int *	matrix_size,
		int *	num_procsr,
		int *	num_rhs,
		double *	secs
	)

Pliris FactorSolve.

Factors and solves the dense matrix

Parameters

AA(In)	– Epetra Serial Dense Vector that has the matrix and rhs packed
my_rows(In)	– number of rows of the matrix on this processor
my_cols(In)	– number of columns of the matrix on this processor
matrix_size(In)	– order of the dense matrix
num_procsr(In)	– number of processors for a row
num_rhs(In)	– number of right hand sides
secs(Out)	– factor and solve time in seconds

References SetMatrix().

FactorSolve() [2/2]

int Pliris::FactorSolve	(	Epetra_Vector *	A,
		int	my_rows,
		int	my_cols,
		int *	matrix_size,
		int *	num_procsr,
		int *	num_rhs,
		double *	secs
	)

Pliris FactorSolve.

Factors and solves the dense matrix

Parameters

A(InOut)	– Epetra Vector that has the matrix and rhs packed( Note: matrix is overwritten)
my_rows(In)	– number of rows of the matrix on this processor
my_cols(In)	– number of columns of the matrix on this processor
matrix_size(In)	– order of the dense matrix
num_procsr(In)	– number of processors for a row
num_rhs(In)	– number of right hand sides
secs(Out)	– factor and solve time in seconds

References SetMatrix().

GetDistribution()

int Pliris::GetDistribution	(	int *	nprocs_row,
		int *	number_of_unknowns,
		int *	nrhs,
		int *	my_rows,
		int *	my_cols,
		int *	my_first_row,
		int *	my_first_col,
		int *	my_rhs,
		int *	my_row,
		int *	my_col
	)

Pliris GetDistirbution.

Gives the distribution information that is required by the dense solver

Parameters

nprocs_row(In)	- number of processors for a row
number_of_unknowns(In)	- order of the dense matrix
nrhs(In)	- number of right hand sides
my_rows(Out)	- number of rows of the matrix on this processor
my_cols	(Out) - number of columns of the matrix on this processor
my_first_row(Out)	- first (global) row number on this processor (array starts at index 1)
my_first_col	(Out) - first (global) column number on this processor (array starts at index 1)
my_rhs(Out)	- number of Right hand sides on this processor
my_row(Out)	- row number in processor mesh, 0 to the number of processors for a column -1
my_col(Out)	- column number in processor mesh, 0 to the number of processors for a row -1

SetLHS()

int Pliris::SetLHS

(

Epetra_MultiVector *

X

)

Pliris LHS Set.

Associates an already defined Epetra_MultiVector (or Epetra_Vector) as the initial guess and location where the solution will be return.

SetMatrix() [1/2]

int Pliris::SetMatrix

(

Epetra_SerialDenseVector *

A

)

Pliris Matrix Set.

Associates an already defined Epetra_SerialDenseVector as the matrix (column ordered) of the linear system.

SetMatrix() [2/2]

int Pliris::SetMatrix

(

Epetra_Vector *

A

)

Pliris Matrix Set.

Associates an already defined Epetra_Vector as the matrix (column ordered) of the linear system.

Referenced by Factor(), FactorSolve(), and FactorSolve().

SetRHS()

int Pliris::SetRHS

(

Epetra_MultiVector *

B

)

Pliris RHS Set.

Associates an already defined Epetra_MultiVector (or Epetra_Vector) as the right-hand-side of the linear system.

Solve()

int Pliris::Solve	(	int *	permute,
		int *	num_rhs
	)

Pliris Solve.

Solves the previously factored dense matrix

Parameters

permute(In)	– permutation matrix
num_rhs(In)	– factor and solve time in seconds \ Note that the matrix has been previously factored by Factor \ The RHS has been set by SetRHS(Epetra_MultiVector * B) \ On output the result is in the RHS

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

• Pliris.h
• Pliris.cpp