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

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Revision 1388 - (show annotations)
Fri Jan 11 07:45:58 2008 UTC (11 years, 11 months ago) by trankine
File MIME type: text/plain
File size: 3645 byte(s)
And get the *(&(*&(* name right
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
22 #define PASO_TRACE
23 /* error codes used in the solver */
24 #define SOLVER_NO_ERROR 0
25 #define SOLVER_MAXITER_REACHED 1
26 #define SOLVER_INPUT_ERROR -1
27 #define SOLVER_MEMORY_ERROR -9
28 #define SOLVER_BREAKDOWN -10
29
30 static double ONE=1.;
31 static double ZERO=0.;
32 static double TOLERANCE_FOR_SCALARS=0.;
33
34 /* ILU preconditioner */
35 struct Paso_Solver_ILU {
36 dim_t n_block;
37 dim_t n;
38 index_t num_colors;
39 index_t* colorOf;
40 index_t* main_iptr;
41 double* factors;
42 Paso_Pattern* pattern;
43 };
44 typedef struct Paso_Solver_ILU Paso_Solver_ILU;
45
46 /* RILU preconditioner */
47 struct Paso_Solver_RILU {
48 dim_t n;
49 dim_t n_block;
50 dim_t n_F;
51 dim_t n_C;
52 double* inv_A_FF;
53 index_t* A_FF_pivot;
54 Paso_SparseMatrix * A_FC;
55 Paso_SparseMatrix * A_CF;
56 index_t* rows_in_F;
57 index_t* rows_in_C;
58 index_t* mask_F;
59 index_t* mask_C;
60 double* x_F;
61 double* b_F;
62 double* x_C;
63 double* b_C;
64 struct Paso_Solver_RILU * RILU_of_Schur;
65 };
66 typedef struct Paso_Solver_RILU Paso_Solver_RILU;
67
68
69 /* jacobi preconditioner */
70
71 typedef struct Paso_Solver_Jacobi {
72 dim_t n_block;
73 dim_t n;
74 double* values;
75 index_t* pivot;
76 } Paso_Solver_Jacobi;
77
78 /* general preconditioner interface */
79
80 typedef struct Paso_Solver_Preconditioner {
81 dim_t type;
82 /* jacobi preconditioner */
83 Paso_Solver_Jacobi* jacobi;
84 /* ilu preconditioner */
85 Paso_Solver_ILU* ilu;
86 /* ilu preconditioner */
87 Paso_Solver_RILU* rilu;
88 } Paso_Solver_Preconditioner;
89
90 void Paso_Solver(Paso_SystemMatrix*,double*,double*,Paso_Options*,Paso_Performance* pp);
91 void Paso_Solver_free(Paso_SystemMatrix*);
92 err_t Paso_Solver_BiCGStab( Paso_SystemMatrix * A, double* B, double * X, dim_t *iter, double * tolerance, Paso_Performance* pp);
93 err_t Paso_Solver_PCG( Paso_SystemMatrix * A, double* B, double * X, dim_t *iter, double * tolerance, Paso_Performance* pp);
94 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);
95 void Paso_Preconditioner_free(Paso_Solver_Preconditioner*);
96 void Paso_Solver_setPreconditioner(Paso_SystemMatrix* A,Paso_Options* options);
97 void Paso_Solver_solvePreconditioner(Paso_SystemMatrix* A,double*,double*);
98 void Paso_Solver_applyBlockDiagonalMatrix(dim_t n_block,dim_t n,double* D,index_t* pivot,double* x,double* b);
99
100 void Paso_Solver_ILU_free(Paso_Solver_ILU * in);
101 Paso_Solver_ILU* Paso_Solver_getILU(Paso_SparseMatrix * A_p,bool_t verbose);
102 void Paso_Solver_solveILU(Paso_Solver_ILU * ilu, double * x, double * b);
103
104 void Paso_Solver_RILU_free(Paso_Solver_RILU * in);
105 Paso_Solver_RILU* Paso_Solver_getRILU(Paso_SparseMatrix * A_p,bool_t verbose);
106 void Paso_Solver_solveRILU(Paso_Solver_RILU * rilu, double * x, double * b);
107
108 void Paso_Solver_updateIncompleteSchurComplement(Paso_SparseMatrix* A_CC, Paso_SparseMatrix *A_CF,double* invA_FF,index_t* A_FF_pivot, Paso_SparseMatrix *A_FC);
109 Paso_Solver_Jacobi* Paso_Solver_getJacobi(Paso_SparseMatrix * A_p);
110 void Paso_Solver_solveJacobi(Paso_Solver_Jacobi * prec, double * x, double * b);
111 void Paso_Solver_Jacobi_free(Paso_Solver_Jacobi * in);
112
113 #endif /* #ifndef INC_SOLVER */

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