prec.h File Reference

#include "bsr.h"

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Classes
struct	prec_t
	Preconditioner struct. More...

Typedefs
typedef struct prec_t	prec_t
	Preconditioner struct. More...

Functions
prec_t *	prec_alloc ()
	Create empty preconditioner object. More...
void	prec_free (prec_t *P)
	Delete preconditioner object. More...
void	prec_init (prec_t *P, bsr_matrix const *A)
	Initialize preconditioner object. More...
int	prec_analyze (bsr_matrix *M, int(*offsets)[3])
	Identify off-diagonal ILU0 targets. More...
void	prec_dilu_factorize (prec_t *P, bsr_matrix *A)
	DILU factorization. More...
void	prec_ilu0_factorize (prec_t *P, bsr_matrix *A)
	ILU0 factorization. More...
void	prec_mapply3c (prec_t *P, double *x)
	Preconditioner application in mixed-precision. More...
void	prec_dapply3c (prec_t *P, double *x)
	Preconditioner applicationin double-precision. More...
void	prec_downcast (prec_t *P)
	Make single-precision copy of double-precision values. More...
void	prec_info (prec_t *P)
	Display preconditioner statistics. More...

Typedef Documentation

prec_t

typedef struct prec_t prec_t

Preconditioner struct.

Function Documentation

prec_alloc()

prec_t * prec_alloc

(

)

Create empty preconditioner object.

Returns

Pointer to preconditioner object.

Referenced by Opm::MixedPreconditioner< M, X, Y >::MixedPreconditioner().

prec_analyze()

int prec_analyze	(	bsr_matrix *	M,
		int(*)	offsets[3]
	)

Identify off-diagonal ILU0 targets.

Parameters

M	Pointer to bsr matrix.
offsets	Pointer to offsets identifying off-diagonal targets.

Returns

number of offdiagonal targets.

prec_dapply3c()

void prec_dapply3c	(	prec_t *	P,
		double *	x
	)

Preconditioner applicationin double-precision.

Note

Algorithm onsists of lower and upper triangular solves

Parameters

P	Pointer to preconditioner object. @apram x Pointer to input/output vector

prec_dilu_factorize()

void prec_dilu_factorize	(	prec_t *	P,
		bsr_matrix *	A
	)

DILU factorization.

Parameters

P	Pointer preconditioner object.
A	Pointer to bsr matrix.

Referenced by Opm::MixedPreconditioner< M, X, Y >::update().

prec_downcast()

void prec_downcast

(

prec_t *

P

)

Make single-precision copy of double-precision values.

Parameters

P	Pointer to preconditioner object.

Referenced by Opm::MixedPreconditioner< M, X, Y >::update().

prec_free()

void prec_free

(

prec_t *

P

)

Delete preconditioner object.

Parameters

A	Pointer to preconditioner object.

Referenced by Opm::MixedPreconditioner< M, X, Y >::~MixedPreconditioner().

prec_ilu0_factorize()

void prec_ilu0_factorize	(	prec_t *	P,
		bsr_matrix *	A
	)

ILU0 factorization.

Parameters

P	Pointer preconditioner object.
A	Pointer to bsr matrix.

Referenced by Opm::MixedPreconditioner< M, X, Y >::update().

prec_info()

void prec_info

(

prec_t *

P

)

Display preconditioner statistics.

Parameters

P	Pointer to preconditioner object.

prec_init()

void prec_init	(	prec_t *	P,
		bsr_matrix const *	A
	)

Initialize preconditioner object.

Parameters

P	Pointer preconditioner object.
A	Pointer to bsr matrix.

Referenced by Opm::MixedPreconditioner< M, X, Y >::MixedPreconditioner().

prec_mapply3c()

void prec_mapply3c	(	prec_t *	P,
		double *	x
	)

Preconditioner application in mixed-precision.

Note

Algorithm onsists of lower and upper triangular solves

Parameters

P	Pointer to preconditioner object. @apram x Pointer to input/output vector

Referenced by Opm::MixedPreconditioner< M, X, Y >::apply().