/[escript]/trunk/paso/src/Solver.h
ViewVC logotype

Contents of /trunk/paso/src/Solver.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1476 - (show annotations)
Mon Apr 7 23:38:50 2008 UTC (11 years, 4 months ago) by gross
File MIME type: text/plain
File size: 3924 byte(s)
Jacobian-free Newton method added to Paso
1
2 /* $Id$ */
3
4 /*******************************************************
5 *
6 * Copyright 2003-2007 by ACceSS MNRF
7 * Copyright 2007 by University of Queensland
8 *
9 * http://esscc.uq.edu.au
10 * Primary Business: Queensland, Australia
11 * Licensed under the Open Software License version 3.0
12 * http://www.opensource.org/licenses/osl-3.0.php
13 *
14 *******************************************************/
15
16 #ifndef INC_SOLVER
17 #define INC_SOLVER
18
19 #include "SystemMatrix.h"
20 #include "performance.h"
21 #include "Functions.h"
22
23 #define PASO_TRACE
24 /* error codes used in the solver */
25 #define SOLVER_NO_ERROR 0
26 #define SOLVER_MAXITER_REACHED 1
27 #define SOLVER_INPUT_ERROR -1
28 #define SOLVER_MEMORY_ERROR -9
29 #define SOLVER_BREAKDOWN -10
30
31 static double ONE=1.;
32 static double ZERO=0.;
33 static double TOLERANCE_FOR_SCALARS=0.;
34
35 /* ILU preconditioner */
36 struct Paso_Solver_ILU {
37 dim_t n_block;
38 dim_t n;
39 index_t num_colors;
40 index_t* colorOf;
41 index_t* main_iptr;
42 double* factors;
43 Paso_Pattern* pattern;
44 };
45 typedef struct Paso_Solver_ILU Paso_Solver_ILU;
46
47 /* RILU preconditioner */
48 struct Paso_Solver_RILU {
49 dim_t n;
50 dim_t n_block;
51 dim_t n_F;
52 dim_t n_C;
53 double* inv_A_FF;
54 index_t* A_FF_pivot;
55 Paso_SparseMatrix * A_FC;
56 Paso_SparseMatrix * A_CF;
57 index_t* rows_in_F;
58 index_t* rows_in_C;
59 index_t* mask_F;
60 index_t* mask_C;
61 double* x_F;
62 double* b_F;
63 double* x_C;
64 double* b_C;
65 struct Paso_Solver_RILU * RILU_of_Schur;
66 };
67 typedef struct Paso_Solver_RILU Paso_Solver_RILU;
68
69
70 /* jacobi preconditioner */
71
72 typedef struct Paso_Solver_Jacobi {
73 dim_t n_block;
74 dim_t n;
75 double* values;
76 index_t* pivot;
77 } Paso_Solver_Jacobi;
78
79 /* general preconditioner interface */
80
81 typedef struct Paso_Solver_Preconditioner {
82 dim_t type;
83 /* jacobi preconditioner */
84 Paso_Solver_Jacobi* jacobi;
85 /* ilu preconditioner */
86 Paso_Solver_ILU* ilu;
87 /* ilu preconditioner */
88 Paso_Solver_RILU* rilu;
89 } Paso_Solver_Preconditioner;
90
91 void Paso_Solver(Paso_SystemMatrix*,double*,double*,Paso_Options*,Paso_Performance* pp);
92 void Paso_Solver_free(Paso_SystemMatrix*);
93 err_t Paso_Solver_BiCGStab( Paso_SystemMatrix * A, double* B, double * X, dim_t *iter, double * tolerance, Paso_Performance* pp);
94 err_t Paso_Solver_PCG( Paso_SystemMatrix * A, double* B, double * X, dim_t *iter, double * tolerance, Paso_Performance* pp);
95 err_t Paso_Solver_GMRES(Paso_SystemMatrix * A, double * r, double * x, dim_t *num_iter, double * tolerance,dim_t length_of_recursion,dim_t restart, Paso_Performance* pp);
96 void Paso_Preconditioner_free(Paso_Solver_Preconditioner*);
97 void Paso_Solver_setPreconditioner(Paso_SystemMatrix* A,Paso_Options* options);
98 void Paso_Solver_solvePreconditioner(Paso_SystemMatrix* A,double*,double*);
99 void Paso_Solver_applyBlockDiagonalMatrix(dim_t n_block,dim_t n,double* D,index_t* pivot,double* x,double* b);
100
101 void Paso_Solver_ILU_free(Paso_Solver_ILU * in);
102 Paso_Solver_ILU* Paso_Solver_getILU(Paso_SparseMatrix * A_p,bool_t verbose);
103 void Paso_Solver_solveILU(Paso_Solver_ILU * ilu, double * x, double * b);
104
105 void Paso_Solver_RILU_free(Paso_Solver_RILU * in);
106 Paso_Solver_RILU* Paso_Solver_getRILU(Paso_SparseMatrix * A_p,bool_t verbose);
107 void Paso_Solver_solveRILU(Paso_Solver_RILU * rilu, double * x, double * b);
108
109 void Paso_Solver_updateIncompleteSchurComplement(Paso_SparseMatrix* A_CC, Paso_SparseMatrix *A_CF,double* invA_FF,index_t* A_FF_pivot, Paso_SparseMatrix *A_FC);
110 Paso_Solver_Jacobi* Paso_Solver_getJacobi(Paso_SparseMatrix * A_p);
111 void Paso_Solver_solveJacobi(Paso_Solver_Jacobi * prec, double * x, double * b);
112 void Paso_Solver_Jacobi_free(Paso_Solver_Jacobi * in);
113
114 err_t Paso_Solver_NLGMRES(Paso_Function * F, const double* f0, const double* x0, double * x, dim_t *iter, double* tolerance, Paso_Performance* pp);
115 err_t Paso_Solver_NewtonGMRES(Paso_Function *F, double *x, Paso_Options* options, Paso_Performance* pp);
116
117
118
119 #endif /* #ifndef INC_SOLVER */

Properties

Name Value
svn:eol-style native
svn:keywords Author Date Id Revision

  ViewVC Help
Powered by ViewVC 1.1.26