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

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Revision 3793 - (show annotations)
Wed Feb 1 07:39:43 2012 UTC (7 years, 6 months ago) by gross
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new implementation of FCT solver with some modifications to the python interface
1
2 /*******************************************************
3 *
4 * Copyright (c) 2003-2010 by University of Queensland
5 * Earth Systems Science Computational Center (ESSCC)
6 * http://www.uq.edu.au/esscc
7 *
8 * Primary Business: Queensland, Australia
9 * Licensed under the Open Software License version 3.0
10 * http://www.opensource.org/licenses/osl-3.0.php
11 *
12 *******************************************************/
13
14
15 #ifndef INC_PRECS
16 #define INC_PRECS
17
18 #include "SystemMatrix.h"
19 #include "performance.h"
20 #include "BOOMERAMG.h"
21
22 #define PRECONDITIONER_NO_ERROR 0
23 #define PRECONDITIONER_MAXITER_REACHED 1
24 #define PRECONDITIONER_INPUT_ERROR -1
25 #define PRECONDITIONER_MEMORY_ERROR -9
26 #define PRECONDITIONER_BREAKDOWN -10
27 #define PRECONDITIONER_NEGATIVE_NORM_ERROR -11
28 #define PRECONDITIONER_DIVERGENCE -12
29
30
31 #define PASO_AMG_UNDECIDED -1
32 #define PASO_AMG_IN_F 0
33 #define PASO_AMG_IN_C 1
34
35 /* GAUSS SEIDEL & Jacobi */
36 typedef struct Paso_Preconditioner_LocalSmoother {
37 bool_t Jacobi;
38 double* diag;
39 double* buffer;
40 index_t* pivot;
41 } Paso_Preconditioner_LocalSmoother;
42
43 typedef struct Paso_Preconditioner_Smoother {
44 Paso_Preconditioner_LocalSmoother* localSmoother;
45 bool_t is_local;
46 } Paso_Preconditioner_Smoother;
47
48 void Paso_Preconditioner_Smoother_free(Paso_Preconditioner_Smoother * in);
49 void Paso_Preconditioner_LocalSmoother_free(Paso_Preconditioner_LocalSmoother * in);
50
51
52 Paso_Preconditioner_Smoother* Paso_Preconditioner_Smoother_alloc(Paso_SystemMatrix * A_p, const bool_t jacobi, const bool_t is_local, const bool_t verbose);
53 Paso_Preconditioner_LocalSmoother* Paso_Preconditioner_LocalSmoother_alloc(Paso_SparseMatrix * A_p,const bool_t jacobi, const bool_t verbose);
54
55 void Paso_Preconditioner_Smoother_solve(Paso_SystemMatrix* A, Paso_Preconditioner_Smoother * gs, double * x, const double * b, const dim_t sweeps, const bool_t x_is_initial);
56 void Paso_Preconditioner_LocalSmoother_solve(Paso_SparseMatrix* A, Paso_Preconditioner_LocalSmoother * gs, double * x, const double * b, const dim_t sweeps, const bool_t x_is_initial);
57 err_t Paso_Preconditioner_Smoother_solve_byTolerance(Paso_SystemMatrix* A, Paso_Preconditioner_Smoother * gs, double * x, const double * b, const double tol, dim_t *sweeps, const bool_t x_is_initial);
58
59 void Paso_Preconditioner_LocalSmoother_Sweep(Paso_SparseMatrix* A, Paso_Preconditioner_LocalSmoother * gs, double * x);
60 void Paso_Preconditioner_LocalSmoother_Sweep_sequential(Paso_SparseMatrix* A, Paso_Preconditioner_LocalSmoother * gs, double * x);
61 void Paso_Preconditioner_LocalSmoother_Sweep_tiled(Paso_SparseMatrix* A, Paso_Preconditioner_LocalSmoother * gs, double * x);
62 void Paso_Preconditioner_LocalSmoother_Sweep_colored(Paso_SparseMatrix* A, Paso_Preconditioner_LocalSmoother * gs, double * x);
63
64
65
66 /* Local preconditioner */
67 struct Paso_Preconditioner_AMG {
68 dim_t level;
69 dim_t n;
70 dim_t n_F;
71 dim_t n_block;
72 Paso_SystemMatrix * A_C; /* coarse level matrix */
73 Paso_SystemMatrix * P; /* prolongation n x n_C*/
74 Paso_SystemMatrix * R; /* restriction n_C x n */
75
76 Paso_Preconditioner_Smoother* Smoother;
77 dim_t post_sweeps;
78 dim_t pre_sweeps;
79 index_t reordering; /* applied reordering in direct solver */
80 dim_t refinements; /* number of refinements in direct solver (typically =0) */
81 double* r; /* buffer for residual */
82 double* x_C; /* solution of coarse level system */
83 double* b_C; /* right hand side of coarse level system */
84 struct Paso_Preconditioner_AMG * AMG_C;
85 };
86 typedef struct Paso_Preconditioner_AMG Paso_Preconditioner_AMG;
87
88 void Paso_Preconditioner_AMG_free(Paso_Preconditioner_AMG * in);
89 Paso_Preconditioner_AMG* Paso_Preconditioner_AMG_alloc(Paso_SystemMatrix * A_p,dim_t level,Paso_Options* options);
90 void Paso_Preconditioner_AMG_solve(Paso_SystemMatrix* A, Paso_Preconditioner_AMG * amg, double * x, double * b);
91 void Paso_Preconditioner_AMG_setStrongConnections(Paso_SystemMatrix* A, dim_t *degree_S, index_t* offset_S, index_t *S, const double theta, const double tau);
92 void Paso_Preconditioner_AMG_setStrongConnections_Block(Paso_SystemMatrix* A, dim_t *degree_S, index_t* offset_S, index_t *S, const double theta, const double tau);
93 double Paso_Preconditioner_AMG_getCoarseLevelSparsity(const Paso_Preconditioner_AMG * in);
94 dim_t Paso_Preconditioner_AMG_getNumCoarseUnknwons(const Paso_Preconditioner_AMG * in);
95 index_t Paso_Preconditioner_AMG_getMaxLevel(const Paso_Preconditioner_AMG * in);
96 void Paso_Preconditioner_AMG_transposeStrongConnections(const dim_t n, const dim_t* degree_S, const index_t* offset_S, const index_t* S, const dim_t nT, dim_t *degree_ST, index_t* offset_ST,index_t* ST);
97 void Paso_Preconditioner_AMG_CIJPCoarsening(const dim_t n, const dim_t my_n, index_t*split_marker,
98 const dim_t* degree_S, const index_t* offset_S, const index_t* S,
99 const dim_t* degree_ST, const index_t* offset_ST, const index_t* ST,
100 Paso_Connector* col_connector, Paso_Distribution* col_dist);
101
102 /* Local AMG preconditioner */
103 struct Paso_Preconditioner_LocalAMG {
104 dim_t level;
105 dim_t n;
106 dim_t n_F;
107 dim_t n_block;
108
109 Paso_SparseMatrix * A_C; /* coarse level matrix */
110 Paso_SparseMatrix * P; /* prolongation n x n_C*/
111 Paso_SparseMatrix * R; /* restriction n_C x n */
112
113 Paso_Preconditioner_LocalSmoother* Smoother;
114 dim_t post_sweeps;
115 dim_t pre_sweeps;
116 index_t reordering; /* applied reordering in direct solver */
117 dim_t refinements; /* number of refinements in direct solver (typically =0) */
118 double* r; /* buffer for residual */
119 double* x_C; /* solution of coarse level system */
120 double* b_C; /* right hand side of coarse level system */
121 struct Paso_Preconditioner_LocalAMG * AMG_C;
122 };
123 typedef struct Paso_Preconditioner_LocalAMG Paso_Preconditioner_LocalAMG;
124
125 void Paso_Preconditioner_LocalAMG_free(Paso_Preconditioner_LocalAMG * in);
126 Paso_Preconditioner_LocalAMG* Paso_Preconditioner_LocalAMG_alloc(Paso_SparseMatrix * A_p,dim_t level,Paso_Options* options);
127 void Paso_Preconditioner_LocalAMG_solve(Paso_SparseMatrix* A, Paso_Preconditioner_LocalAMG * amg, double * x, double * b);
128
129 void Paso_Preconditioner_LocalAMG_RungeStuebenSearch(const dim_t n, const index_t* offset, const dim_t* degree, const index_t* S, index_t*split_marker, const bool_t usePanel);
130 void Paso_Preconditioner_LocalAMG_setStrongConnections_Block(Paso_SparseMatrix* A, dim_t *degree, index_t *S, const double theta, const double tau);
131 void Paso_Preconditioner_LocalAMG_setStrongConnections(Paso_SparseMatrix* A, dim_t *degree, index_t *S, const double theta, const double tau);
132 Paso_SparseMatrix* Paso_Preconditioner_LocalAMG_getProlongation(Paso_SparseMatrix* A_p, const index_t* offset_S, const dim_t* degree_S, const index_t* S, const dim_t n_C, const index_t* counter_C, const index_t interpolation_method);
133 void Paso_Preconditioner_LocalAMG_setDirectProlongation_Block(Paso_SparseMatrix* P_p, const Paso_SparseMatrix* A_p, const index_t *counter_C);
134 void Paso_Preconditioner_LocalAMG_setDirectProlongation(Paso_SparseMatrix* P_p, const Paso_SparseMatrix* A_p, const index_t *counter_C);
135 void Paso_Preconditioner_LocalAMG_setClassicProlongation(Paso_SparseMatrix* P_p, Paso_SparseMatrix* A_p, const index_t* offset_S, const dim_t* degree_S, const index_t* S, const index_t *counter_C);
136 void Paso_Preconditioner_LocalAMG_setClassicProlongation_Block(Paso_SparseMatrix* P_p, Paso_SparseMatrix* A_p, const index_t* offset_S, const dim_t* degree_S, const index_t* S, const index_t *counter_C);
137 index_t Paso_Preconditioner_LocalAMG_getMaxLevel(const Paso_Preconditioner_LocalAMG * in);
138 double Paso_Preconditioner_LocalAMG_getCoarseLevelSparsity(const Paso_Preconditioner_LocalAMG * in);
139 dim_t Paso_Preconditioner_LocalAMG_getNumCoarseUnknwons(const Paso_Preconditioner_LocalAMG * in);
140 void Paso_Preconditioner_LocalAMG_enforceFFConnectivity(const dim_t n, const index_t* offset_S, const dim_t* degree_S, const index_t* S, index_t*split_marker);
141
142
143 struct Paso_Preconditioner_BoomerAMG
144 {
145 Paso_BOOMERAMG_Handler* pt;
146 };
147 typedef struct Paso_Preconditioner_BoomerAMG Paso_Preconditioner_BoomerAMG;
148 void Paso_Preconditioner_BoomerAMG_free(Paso_Preconditioner_BoomerAMG * in);
149 Paso_Preconditioner_BoomerAMG* Paso_Preconditioner_BoomerAMG_alloc(Paso_SystemMatrix * A_p,Paso_Options* options);
150 void Paso_Preconditioner_BoomerAMG_solve(Paso_SystemMatrix* A, Paso_Preconditioner_BoomerAMG * amg, double * x, double * b);
151
152
153 struct Paso_Preconditioner_AMG_Root
154 {
155 bool_t is_local;
156 Paso_Preconditioner_AMG* amg;
157 Paso_Preconditioner_LocalAMG* localamg;
158 Paso_Preconditioner_BoomerAMG* boomeramg;
159 dim_t sweeps;
160 Paso_Preconditioner_Smoother* amgsubstitute;
161 };
162 typedef struct Paso_Preconditioner_AMG_Root Paso_Preconditioner_AMG_Root;
163
164 Paso_Preconditioner_AMG_Root* Paso_Preconditioner_AMG_Root_alloc(Paso_SystemMatrix *A, Paso_Options* options);
165 void Paso_Preconditioner_AMG_Root_free(Paso_Preconditioner_AMG_Root * in);
166 void Paso_Preconditioner_AMG_Root_solve(Paso_SystemMatrix* A, Paso_Preconditioner_AMG_Root * amg, double * x, double * b);
167
168 /*===============================================*/
169 /* ILU preconditioner */
170 struct Paso_Solver_ILU {
171 double* factors;
172 };
173 typedef struct Paso_Solver_ILU Paso_Solver_ILU;
174
175
176
177 /* RILU preconditioner */
178 struct Paso_Solver_RILU {
179 dim_t n;
180 dim_t n_block;
181 dim_t n_F;
182 dim_t n_C;
183 double* inv_A_FF;
184 index_t* A_FF_pivot;
185 Paso_SparseMatrix * A_FC;
186 Paso_SparseMatrix * A_CF;
187 index_t* rows_in_F;
188 index_t* rows_in_C;
189 index_t* mask_F;
190 index_t* mask_C;
191 double* x_F;
192 double* b_F;
193 double* x_C;
194 double* b_C;
195 struct Paso_Solver_RILU * RILU_of_Schur;
196 };
197 typedef struct Paso_Solver_RILU Paso_Solver_RILU;
198
199
200
201 /* general preconditioner interface */
202
203 typedef struct Paso_Preconditioner {
204 dim_t type;
205 dim_t sweeps;
206 /* jacobi preconditioner */
207 Paso_Preconditioner_Smoother* jacobi;
208 /* Gauss-Seidel preconditioner */
209 Paso_Preconditioner_Smoother* gs;
210 /* amg preconditioner */
211 Paso_Preconditioner_AMG_Root *amg;
212
213 /* ilu preconditioner */
214 Paso_Solver_ILU* ilu;
215 /* rilu preconditioner */
216 Paso_Solver_RILU* rilu;
217
218 } Paso_Preconditioner;
219
220 void Paso_Preconditioner_free(Paso_Preconditioner*);
221 Paso_Preconditioner* Paso_Preconditioner_alloc(Paso_SystemMatrix* A,Paso_Options* options);
222 void Paso_Preconditioner_solve(Paso_Preconditioner* prec, Paso_SystemMatrix* A,double*,double*);
223
224
225 /*******************************************/
226 void Paso_Solver_ILU_free(Paso_Solver_ILU * in);
227 Paso_Solver_ILU* Paso_Solver_getILU(Paso_SparseMatrix * A_p,bool_t verbose);
228 void Paso_Solver_solveILU(Paso_SparseMatrix * A, Paso_Solver_ILU * ilu, double * x, const double * b);
229
230 void Paso_Solver_RILU_free(Paso_Solver_RILU * in);
231 Paso_Solver_RILU* Paso_Solver_getRILU(Paso_SparseMatrix * A_p,bool_t verbose);
232 void Paso_Solver_solveRILU(Paso_Solver_RILU * rilu, double * x, double * b);
233
234 void Paso_Solver_updateIncompleteSchurComplement(Paso_SparseMatrix* A_CC, Paso_SparseMatrix *A_CF,double* invA_FF,index_t* A_FF_pivot, Paso_SparseMatrix *A_FC);
235
236
237 #endif /* #ifndef INC_PRECS */

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