PreBSR.c File Reference

Preconditioners for dBSRmat matrices. More...

#include "fasp.h"
#include "fasp_functs.h"
#include "PreMGUtil.inl"

Go to the source code of this file.

Functions
void	fasp_precond_dbsr_diag (REAL *r, REAL *z, void *data)
	Diagonal preconditioner z=inv(D)*r. More...
void	fasp_precond_dbsr_diag_nc2 (REAL *r, REAL *z, void *data)
	Diagonal preconditioner z=inv(D)*r. More...
void	fasp_precond_dbsr_diag_nc3 (REAL *r, REAL *z, void *data)
	Diagonal preconditioner z=inv(D)*r. More...
void	fasp_precond_dbsr_diag_nc4 (REAL *r, REAL *z, void *data)
	Diagonal preconditioner z=inv(D)*r. More...
void	fasp_precond_dbsr_diag_nc5 (REAL *r, REAL *z, void *data)
	Diagonal preconditioner z=inv(D)*r. More...
void	fasp_precond_dbsr_diag_nc7 (REAL *r, REAL *z, void *data)
	Diagonal preconditioner z=inv(D)*r. More...
void	fasp_precond_dbsr_ilu (REAL *r, REAL *z, void *data)
	ILU preconditioner. More...
void	fasp_precond_dbsr_ilu_mc_omp (REAL *r, REAL *z, void *data)
	Multi-thread Parallel ILU preconditioner based on graph coloring. More...
void	fasp_precond_dbsr_ilu_ls_omp (REAL *r, REAL *z, void *data)
	Multi-thread Parallel ILU preconditioner based on level schedule strategy. More...
void	fasp_precond_dbsr_amg (REAL *r, REAL *z, void *data)
	AMG preconditioner. More...
void	fasp_precond_dbsr_amg_nk (REAL *r, REAL *z, void *data)
	AMG with extra near kernel solve preconditioner. More...
void	fasp_precond_dbsr_namli (REAL *r, REAL *z, void *data)
	Nonlinear AMLI-cycle AMG preconditioner. More...

Variables
double	PreSmoother_time_zl = 0.0
double	PostSmoother_time_zl = 0.0
double	Krylov_time_zl = 0.0
double	Coarsen_time_zl = 0.0
double	AMLI_cycle_time_zl = 0.0

Detailed Description

Preconditioners for dBSRmat matrices.

Note

This file contains Level-4 (Pre) functions. It requires: AuxArray.c, AuxParam.c, AuxThreads.c, AuxVector.c, BlaSmallMat.c, BlaSpmvBSR.c, BlaSpmvCSR.c, KrySPcg.c, KrySPvgmres.c, PreMGCycle.c, and PreMGRecurAMLI.c

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Copyright (C) 2010–Present by the FASP team. All rights reserved.

Released under the terms of the GNU Lesser General Public License 3.0 or later.

Definition in file PreBSR.c.

Function Documentation

fasp_precond_dbsr_amg()

void fasp_precond_dbsr_amg	(	REAL *	r,
		REAL *	z,
		void *	data
	)

AMG preconditioner.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Xiaozhe Hu

Date

08/07/2011

Definition at line 1149 of file PreBSR.c.

fasp_precond_dbsr_amg_nk()

void fasp_precond_dbsr_amg_nk	(	REAL *	r,
		REAL *	z,
		void *	data
	)

AMG with extra near kernel solve preconditioner.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Xiaozhe Hu

Date

05/26/2014

Definition at line 1194 of file PreBSR.c.

fasp_precond_dbsr_diag()

void fasp_precond_dbsr_diag	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Diagonal preconditioner z=inv(D)*r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Zhou Zhiyang, Xiaozhe Hu

Date

10/26/2010

Modified by Chunsheng Feng, Xiaoqiang Yue on 05/24/2012

Note

Works for general nb (Xiaozhe)

Definition at line 49 of file PreBSR.c.

fasp_precond_dbsr_diag_nc2()

void fasp_precond_dbsr_diag_nc2	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Diagonal preconditioner z=inv(D)*r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Zhou Zhiyang, Xiaozhe Hu

Date

11/18/2011

Modified by Chunsheng Feng, Xiaoqiang Yue on 05/24/2012

Note

Works for 2-component (Xiaozhe)

Definition at line 124 of file PreBSR.c.

fasp_precond_dbsr_diag_nc3()

void fasp_precond_dbsr_diag_nc3	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Diagonal preconditioner z=inv(D)*r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Zhou Zhiyang, Xiaozhe Hu

Date

01/06/2011

Modified by Chunsheng Feng Xiaoqiang Yue on 05/24/2012

Note

Works for 3-component (Xiaozhe)

Definition at line 169 of file PreBSR.c.

fasp_precond_dbsr_diag_nc4()

void fasp_precond_dbsr_diag_nc4	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Diagonal preconditioner z=inv(D)*r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Zhou Zhiyang, Xiaozhe Hu

Date

01/06/2011

Modified by Chunsheng Feng Xiaoqiang Yue on 05/24/2012

Note

Works for 4-component (Li Zhao)

Definition at line 214 of file PreBSR.c.

fasp_precond_dbsr_diag_nc5()

void fasp_precond_dbsr_diag_nc5	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Diagonal preconditioner z=inv(D)*r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Zhou Zhiyang, Xiaozhe Hu

Date

01/06/2011

Modified by Chunsheng Feng, Xiaoqiang Yue on 05/24/2012

Note

Works for 5-component (Xiaozhe)

Definition at line 259 of file PreBSR.c.

fasp_precond_dbsr_diag_nc7()

void fasp_precond_dbsr_diag_nc7	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Diagonal preconditioner z=inv(D)*r.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Zhou Zhiyang, Xiaozhe Hu

Date

01/06/2011

Modified by Chunsheng Feng Xiaoqiang Yue on 05/24/2012

Note

Works for 7-component (Xiaozhe)

Definition at line 304 of file PreBSR.c.

fasp_precond_dbsr_ilu()

void fasp_precond_dbsr_ilu	(	REAL *	r,
		REAL *	z,
		void *	data
	)

ILU preconditioner.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Shiquan Zhang, Xiaozhe Hu

Date

11/09/2010

Note

Works for general nb (Xiaozhe)

Definition at line 347 of file PreBSR.c.

fasp_precond_dbsr_ilu_ls_omp()

void fasp_precond_dbsr_ilu_ls_omp	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Multi-thread Parallel ILU preconditioner based on level schedule strategy.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Zheng Li

Date

12/04/2016

Note

Only works for nb 1, 2, and 3 (Zheng)

works forall nb = 1, 2, ..., added by Li Zhao, 09/19/2022

Definition at line 844 of file PreBSR.c.

fasp_precond_dbsr_ilu_mc_omp()

void fasp_precond_dbsr_ilu_mc_omp	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Multi-thread Parallel ILU preconditioner based on graph coloring.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Zheng Li

Date

12/04/2016

Note

Only works for nb 1, 2, and 3 (Zheng)

Definition at line 618 of file PreBSR.c.

fasp_precond_dbsr_namli()

void fasp_precond_dbsr_namli	(	REAL *	r,
		REAL *	z,
		void *	data
	)

Nonlinear AMLI-cycle AMG preconditioner.

Parameters

r	Pointer to the vector needs preconditioning
z	Pointer to preconditioned vector
data	Pointer to precondition data

Author

Xiaozhe Hu

Date

02/06/2012

Definition at line 1294 of file PreBSR.c.

Variable Documentation

AMLI_cycle_time_zl

double AMLI_cycle_time_zl = 0.0

Definition at line 1280 of file PreBSR.c.

Coarsen_time_zl

double Coarsen_time_zl = 0.0

Definition at line 1279 of file PreBSR.c.

Krylov_time_zl

double Krylov_time_zl = 0.0

Definition at line 1278 of file PreBSR.c.

PostSmoother_time_zl

double PostSmoother_time_zl = 0.0

Definition at line 1277 of file PreBSR.c.

PreSmoother_time_zl

double PreSmoother_time_zl = 0.0

Definition at line 1276 of file PreBSR.c.