/[escript]/trunk/paso/src/Solver.h
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Annotation of /trunk/paso/src/Solver.h

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Revision 430 - (hide annotations)
Wed Jan 11 06:40:50 2006 UTC (13 years, 10 months ago) by gross
Original Path: trunk/paso/src/Solvers/Solver.h
File MIME type: text/plain
File size: 3102 byte(s)
ILU has been replicated is called RILU (recursive ILU) now. ILU will now be reimplemented.
1 jgs 150 /* $Id$ */
2    
3     #ifndef INC_SOLVER
4     #define INC_SOLVER
5    
6     #include "SystemMatrix.h"
7    
8     #define FINLEY_SOLVER_TRACE
9     /* error codes used in the solver */
10     #define SOLVER_NO_ERROR 0
11     #define SOLVER_MAXITER_REACHED 1
12     #define SOLVER_INPUT_ERROR -1
13     #define SOLVER_MEMORY_ERROR -9
14     #define SOLVER_BREAKDOWN -10
15    
16 jgs 154 static double ONE=1.;
17     static double ZERO=0.;
18     static double TOLERANCE_FOR_SCALARS=0.;
19 jgs 150
20     /* ILU preconditioner */
21     struct Paso_Solver_ILU {
22     dim_t n;
23     dim_t n_block;
24     dim_t n_F;
25     dim_t n_C;
26     double* inv_A_FF;
27     index_t* A_FF_pivot;
28     Paso_SystemMatrix * A_FC;
29     Paso_SystemMatrix * A_CF;
30     index_t* rows_in_F;
31     index_t* rows_in_C;
32     index_t* mask_F;
33     index_t* mask_C;
34     double* x_F;
35     double* b_F;
36     double* x_C;
37     double* b_C;
38     struct Paso_Solver_ILU * ILU_of_Schur;
39     };
40     typedef struct Paso_Solver_ILU Paso_Solver_ILU;
41    
42 gross 430 /* RILU preconditioner */
43     struct Paso_Solver_RILU {
44     dim_t n;
45     dim_t n_block;
46     dim_t n_F;
47     dim_t n_C;
48     double* inv_A_FF;
49     index_t* A_FF_pivot;
50     Paso_SystemMatrix * A_FC;
51     Paso_SystemMatrix * A_CF;
52     index_t* rows_in_F;
53     index_t* rows_in_C;
54     index_t* mask_F;
55     index_t* mask_C;
56     double* x_F;
57     double* b_F;
58     double* x_C;
59     double* b_C;
60     struct Paso_Solver_RILU * RILU_of_Schur;
61     };
62     typedef struct Paso_Solver_RILU Paso_Solver_RILU;
63 jgs 150
64 gross 430
65 jgs 150 /* jacobi preconditioner */
66    
67     typedef struct Paso_Solver_Jacobi {
68     dim_t n_block;
69     dim_t n;
70     double* values;
71     index_t* pivot;
72     } Paso_Solver_Jacobi;
73    
74     /* general preconditioner interface */
75    
76     typedef struct Paso_Solver_Preconditioner {
77     dim_t type;
78     /* jacobi preconditioner */
79     Paso_Solver_Jacobi* jacobi;
80     /* ilu preconditioner */
81     Paso_Solver_ILU* ilu;
82 gross 430 /* ilu preconditioner */
83     Paso_Solver_RILU* rilu;
84 jgs 150 } Paso_Solver_Preconditioner;
85    
86     void Paso_Solver(Paso_SystemMatrix*,double*,double*,Paso_Options*);
87     void Paso_Solver_free(Paso_SystemMatrix*);
88     err_t Paso_Solver_BiCGStab( Paso_SystemMatrix * A, double* B, double * X, dim_t *iter, double * tolerance);
89     err_t Paso_Solver_PCG( Paso_SystemMatrix * A, double* B, double * X, dim_t *iter, double * tolerance);
90     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);
91     void Paso_Preconditioner_free(Paso_Solver_Preconditioner*);
92     void Paso_Solver_setPreconditioner(Paso_SystemMatrix* A,Paso_Options* options);
93     void Paso_Solver_solvePreconditioner(Paso_SystemMatrix* A,double*,double*);
94     void Paso_Solver_applyBlockDiagonalMatrix(dim_t n_block,dim_t n,double* D,index_t* pivot,double* x,double* b);
95     void Paso_Solver_ILU_free(Paso_Solver_ILU * in);
96     Paso_Solver_ILU* Paso_Solver_getILU(Paso_SystemMatrix * A_p,bool_t verbose);
97     void Paso_Solver_solveILU(Paso_Solver_ILU * ilu, double * x, double * b);
98     void Paso_Solver_updateIncompleteSchurComplement(Paso_SystemMatrix* A_CC,Paso_SystemMatrix *A_CF,double* invA_FF,index_t* A_FF_pivot,Paso_SystemMatrix *A_FC);
99     Paso_Solver_Jacobi* Paso_Solver_getJacobi(Paso_SystemMatrix * A_p);
100     void Paso_Solver_solveJacobi(Paso_Solver_Jacobi * prec, double * x, double * b);
101     void Paso_Solver_Jacobi_free(Paso_Solver_Jacobi * in);
102    
103     #endif /* #ifndef INC_SOLVER */

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