SolBLC.c File Reference

Iterative solvers for dBLCmat matrices. More...

#include <math.h>
#include <time.h>
#include "fasp.h"
#include "fasp_block.h"
#include "fasp_functs.h"
#include "KryUtil.inl"

Go to the source code of this file.

Functions
INT	fasp_solver_dblc_itsolver (dBLCmat *A, dvector *b, dvector *x, precond *pc, ITS_param *itparam)
	Solve Ax = b by standard Krylov methods. More...
INT	fasp_solver_dblc_krylov (dBLCmat *A, dvector *b, dvector *x, ITS_param *itparam)
	Solve Ax = b by standard Krylov methods. More...
INT	fasp_solver_dblc_krylov_block3 (dBLCmat *A, dvector *b, dvector *x, ITS_param *itparam, AMG_param *amgparam, dCSRmat *A_diag)
	Solve Ax = b by standard Krylov methods. More...
INT	fasp_solver_dblc_krylov_block4 (dBLCmat *A, dvector *b, dvector *x, ITS_param *itparam, AMG_param *amgparam, dCSRmat *A_diag)
	Solve Ax = b by standard Krylov methods. More...
INT	fasp_solver_dblc_krylov_sweeping (dBLCmat *A, dvector *b, dvector *x, ITS_param *itparam, INT NumLayers, dBLCmat *Ai, dCSRmat *local_A, ivector *local_index)
	Solve Ax = b by standard Krylov methods. More...

Detailed Description

Iterative solvers for dBLCmat matrices.

Note

This file contains Level-5 (Sol) functions. It requires: AuxMemory.c, AuxMessage.c, AuxTiming.c, AuxVector.c, BlaSparseCSR.c, KryPbcgs.c, KryPgmres.c, KryPminres.c, KryPvfgmres.c, KryPvgmres.c, PreAMGSetupRS.c, PreAMGSetupSA.c, PreAMGSetupUA.c, PreBLC.c, and PreDataInit.c

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Copyright (C) 2009–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 SolBLC.c.

Function Documentation

fasp_solver_dblc_itsolver()

INT fasp_solver_dblc_itsolver	(	dBLCmat *	A,
		dvector *	b,
		dvector *	x,
		precond *	pc,
		ITS_param *	itparam
	)

Solve Ax = b by standard Krylov methods.

Parameters

A	Pointer to the coeff matrix in dBLCmat format
b	Pointer to the right hand side in dvector format
x	Pointer to the approx solution in dvector format
pc	Pointer to the preconditioning action
itparam	Pointer to parameters for iterative solvers

Returns

Iteration number if converges; ERROR otherwise.

Author

Chensong Zhang

Date

11/25/2010

Modified by Chunsheng Feng on 03/04/2016: add VBiCGstab solver

Definition at line 54 of file SolBLC.c.

fasp_solver_dblc_krylov()

INT fasp_solver_dblc_krylov	(	dBLCmat *	A,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam
	)

Solve Ax = b by standard Krylov methods.

Parameters

A	Pointer to the coeff matrix in dBLCmat format
b	Pointer to the right hand side in dvector format
x	Pointer to the approx solution in dvector format
itparam	Pointer to parameters for iterative solvers

Returns

Iteration number if converges; ERROR otherwise.

Author

Xiaozhe Hu

Date

07/18/2010

Definition at line 139 of file SolBLC.c.

fasp_solver_dblc_krylov_block3()

INT fasp_solver_dblc_krylov_block3	(	dBLCmat *	A,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam,
		AMG_param *	amgparam,
		dCSRmat *	A_diag
	)

Solve Ax = b by standard Krylov methods.

Parameters

A	Pointer to the coeff matrix in dBLCmat format
b	Pointer to the right hand side in dvector format
x	Pointer to the approx solution in dvector format
itparam	Pointer to parameters for iterative solvers
amgparam	Pointer to parameters for AMG solvers
A_diag	Digonal blocks of A

Returns

Iteration number if converges; ERROR otherwise.

Author

Xiaozhe Hu

Date

07/10/2014

Warning

Only works for 3X3 block problems!! – Xiaozhe Hu

Definition at line 188 of file SolBLC.c.

fasp_solver_dblc_krylov_block4()

INT fasp_solver_dblc_krylov_block4	(	dBLCmat *	A,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam,
		AMG_param *	amgparam,
		dCSRmat *	A_diag
	)

Solve Ax = b by standard Krylov methods.

Parameters

A	Pointer to the coeff matrix in dBLCmat format
b	Pointer to the right hand side in dvector format
x	Pointer to the approx solution in dvector format
itparam	Pointer to parameters for iterative solvers
amgparam	Pointer to parameters for AMG solvers
A_diag	Digonal blocks of A

Returns

Iteration number if converges; ERROR otherwise.

Author

Xiaozhe Hu

Date

07/06/2014

Warning

Only works for 4 by 4 block dCSRmat problems!! – Xiaozhe Hu

Definition at line 390 of file SolBLC.c.

fasp_solver_dblc_krylov_sweeping()

INT fasp_solver_dblc_krylov_sweeping	(	dBLCmat *	A,
		dvector *	b,
		dvector *	x,
		ITS_param *	itparam,
		INT	NumLayers,
		dBLCmat *	Ai,
		dCSRmat *	local_A,
		ivector *	local_index
	)

Solve Ax = b by standard Krylov methods.

Parameters

A	Pointer to the coeff matrix in dBLCmat format
b	Pointer to the right hand side in dvector format
x	Pointer to the approx solution in dvector format
itparam	Pointer to parameters for iterative solvers
NumLayers	Number of layers used for sweeping preconditioner
Ai	Pointer to the coeff matrix for the preconditioner in dBLCmat format
local_A	Pointer to the local coeff matrices in the dCSRmat format
local_index	Pointer to the local index in ivector format

Returns

Iteration number if converges; ERROR otherwise.

Author

Xiaozhe Hu

Date

05/01/2014

Definition at line 507 of file SolBLC.c.