precond Class Reference

#include <precond.h>

List of all members.

Public Member Functions
void	initiation (gtopology *gt, gmatrix *gm, FILE *out)
	precond ()
void	preconditioning (double *r, double *h, double *rhs)
void	print (FILE *out)
void	read (gtopology *gt, XFILE *in, long mespr)
void	setting (precondtype p, double ift, long numaggr)
	~precond ()
Public Attributes
aggregator *	agg
	class for aggregation method
gmatrix *	agm
double	incompltresh
	treshold for incomplete factorization
double	indegamma
long	n
	number of unknowns/equations
precondtype	pt
	type of preconditioning
double	ssoromega

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Detailed Description

class deals with preconditioning

JK, 25.2.2007

Definition at line 19 of file precond.h.

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Constructor & Destructor Documentation

precond

(

)

Definition at line 5 of file precond.cpp.

References agg, agm, incompltresh, n, noprecond, and pt.

~precond

(

)

Definition at line 18 of file precond.cpp.

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Member Function Documentation

void initiation	(	gtopology *	gt,
		gmatrix *	gm,
		FILE *	out
	)

function initiates necessary vectors, matrices, etc. e.g., it computes incomplete factorization or prepare aggregates in the case of BOSS preconditioning

Parameters:

	gt	- pointer to general topology
	gm	- pointer to general matrix
	out	- output stream

JK, 14.3.2007

Definition at line 119 of file precond.cpp.

References agg, agm, boss, gmatrix::copygm(), incomdec, gmatrix::incomplete_fact(), incompltresh, gmatrix::n, n, noprecond, aggregator::prepare_boss(), print_err(), and pt.

Referenced by slesolv::solve_system().

void preconditioning	(	double *	r,
		double *	h,
		double *	rhs
	)

function computes preconditioning function modifies the residual vector

Parameters:

	r	- residual vector
	h	- preconditioned residual vector
	rhs	- right hand side vector

JK, 15.3.2007

Definition at line 159 of file precond.cpp.

References agg, agm, gmatrix::back_incomplete_fact(), aggregator::boss(), boss, incomdec, incompltresh, n, noprecond, print_err(), and pt.

Referenced by comprow::cg_prec(), and densemat::cg_prec_new().

void print

(

FILE *

out

)

function prints input data

Parameters:

out

- output stream

JK, 15.3.2007

Definition at line 75 of file precond.cpp.

References agg, boss, diagprec, incomdec, incompltresh, noprecond, aggregator::print(), print_err(), pt, ssoromega, and ssorprec.

Referenced by slesolv::print().

void read	(	gtopology *	gt,
		XFILE *	in,
		long	mespr
	)

function reads input data

Parameters:

	in	- input stream
	mespr	- type of message printing

JK, 15.3.2007

Definition at line 31 of file precond.cpp.

References agg, boss, diagprec, incomdec, incompltresh, noprecond, print_err(), pt, aggregator::read(), ssoromega, ssorprec, and xfscanf().

Referenced by slesolv::read().

void setting	(	precondtype	p,
		double	ift,
		long	numaggr
	)

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Member Data Documentation

aggregator* agg

class for aggregation method

Definition at line 45 of file precond.h.

Referenced by initiation(), input(), inputt(), precond(), preconditioning(), print(), slesolv::read(), and read().

gmatrix* agm

Definition at line 48 of file precond.h.

Referenced by initiation(), precond(), and preconditioning().

double incompltresh

treshold for incomplete factorization

Definition at line 42 of file precond.h.

Referenced by initiation(), precond(), preconditioning(), print(), and read().

double indegamma

Definition at line 51 of file precond.h.

long n

number of unknowns/equations

Definition at line 39 of file precond.h.

Referenced by initiation(), precond(), and preconditioning().

precondtype pt

type of preconditioning

Definition at line 36 of file precond.h.

Referenced by initiation(), input(), inputt(), precond(), preconditioning(), print(), slesolv::read(), read(), and gmatrix::setval().

double ssoromega

Definition at line 50 of file precond.h.

Referenced by print(), and read().

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

• SIFEL/GEFEL/precond.h
• SIFEL/GEFEL/precond.cpp