xref: /petsc/include/petscpc.h (revision edf189ef8e8860d62aa4efa58846ae329f2cd8c2) 
1 /*
2       Preconditioner module.
3 */
4 #if !defined(__PETSCPC_H)
5 #define __PETSCPC_H
6 #include "petscmat.h"
7 PETSC_EXTERN_CXX_BEGIN
8 
9 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT  PCInitializePackage(const char[]);
10 
11 /*
12     PCList contains the list of preconditioners currently registered
13    These are added with the PCRegisterDynamic() macro
14 */
15 extern PetscFList PCList;
16 
17 /*S
18      PC - Abstract PETSc object that manages all preconditioners
19 
20    Level: beginner
21 
22   Concepts: preconditioners
23 
24 .seealso:  PCCreate(), PCSetType(), PCType (for list of available types)
25 S*/
26 typedef struct _p_PC* PC;
27 
28 /*E
29     PCType - String with the name of a PETSc preconditioner method or the creation function
30        with an optional dynamic library name, for example
31        http://www.mcs.anl.gov/petsc/lib.a:mypccreate()
32 
33    Level: beginner
34 
35    Notes: Click on the links below to see details on a particular solver
36 
37 .seealso: PCSetType(), PC, PCCreate()
38 E*/
39 #define PCType char*
40 #define PCNONE            "none"
41 #define PCJACOBI          "jacobi"
42 #define PCSOR             "sor"
43 #define PCLU              "lu"
44 #define PCSHELL           "shell"
45 #define PCBJACOBI         "bjacobi"
46 #define PCMG              "mg"
47 #define PCEISENSTAT       "eisenstat"
48 #define PCILU             "ilu"
49 #define PCICC             "icc"
50 #define PCASM             "asm"
51 #define PCKSP             "ksp"
52 #define PCCOMPOSITE       "composite"
53 #define PCREDUNDANT       "redundant"
54 #define PCSPAI            "spai"
55 #define PCNN              "nn"
56 #define PCCHOLESKY        "cholesky"
57 #define PCSAMG            "samg"
58 #define PCPBJACOBI        "pbjacobi"
59 #define PCMAT             "mat"
60 #define PCHYPRE           "hypre"
61 #define PCFIELDSPLIT      "fieldsplit"
62 #define PCTFS             "tfs"
63 #define PCML              "ml"
64 #define PCPROMETHEUS      "prometheus"
65 #define PCGALERKIN        "galerkin"
66 #define PCOPENMP          "openmp"
67 #define PCSUPPORTGRAPH    "supportgraph"
68 #define PCASA             "asa"
69 #define PCCP              "cp"
70 
71 /* Logging support */
72 extern PetscCookie PETSCKSP_DLLEXPORT PC_COOKIE;
73 
74 /*E
75     PCSide - If the preconditioner is to be applied to the left, right
76      or symmetrically around the operator.
77 
78    Level: beginner
79 
80 .seealso:
81 E*/
82 typedef enum { PC_LEFT,PC_RIGHT,PC_SYMMETRIC } PCSide;
83 extern const char *PCSides[];
84 
85 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCreate(MPI_Comm,PC*);
86 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetType(PC,const PCType);
87 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetUp(PC);
88 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetUpOnBlocks(PC);
89 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApply(PC,Vec,Vec);
90 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplySymmetricLeft(PC,Vec,Vec);
91 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplySymmetricRight(PC,Vec,Vec);
92 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyBAorAB(PC,PCSide,Vec,Vec,Vec);
93 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyTranspose(PC,Vec,Vec);
94 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyTransposeExists(PC,PetscTruth*);
95 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyBAorABTranspose(PC,PCSide,Vec,Vec,Vec);
96 
97 /*E
98     PCRichardsonConvergedReason - reason a PCApplyRichardson method terminates
99 
100    Level: advanced
101 
102    Notes: this must match finclude/petscpc.h and the KSPConvergedReason values in petscksp.h
103 
104 .seealso: PCApplyRichardson()
105 E*/
106 typedef enum {
107               PCRICHARDSON_CONVERGED_RTOL               =  2,
108               PCRICHARDSON_CONVERGED_ATOL               =  3,
109               PCRICHARDSON_CONVERGED_ITS                =  4,
110               PCRICHARDSON_DIVERGED_DTOL                = -4} PCRichardsonConvergedReason;
111 
112 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyRichardson(PC,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,PetscInt,PetscInt*,PCRichardsonConvergedReason*);
113 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyRichardsonExists(PC,PetscTruth*);
114 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetInitialGuessNonzero(PC,PetscTruth);
115 
116 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegisterDestroy(void);
117 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegisterAll(const char[]);
118 extern PetscTruth PCRegisterAllCalled;
119 
120 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegister(const char[],const char[],const char[],PetscErrorCode(*)(PC));
121 
122 /*MC
123    PCRegisterDynamic - Adds a method to the preconditioner package.
124 
125    Synopsis:
126    PetscErrorCode PCRegisterDynamic(char *name_solver,char *path,char *name_create,PetscErrorCode (*routine_create)(PC))
127 
128    Not collective
129 
130    Input Parameters:
131 +  name_solver - name of a new user-defined solver
132 .  path - path (either absolute or relative) the library containing this solver
133 .  name_create - name of routine to create method context
134 -  routine_create - routine to create method context
135 
136    Notes:
137    PCRegisterDynamic() may be called multiple times to add several user-defined preconditioners.
138 
139    If dynamic libraries are used, then the fourth input argument (routine_create)
140    is ignored.
141 
142    Sample usage:
143 .vb
144    PCRegisterDynamic("my_solver","/home/username/my_lib/lib/libO/solaris/mylib",
145               "MySolverCreate",MySolverCreate);
146 .ve
147 
148    Then, your solver can be chosen with the procedural interface via
149 $     PCSetType(pc,"my_solver")
150    or at runtime via the option
151 $     -pc_type my_solver
152 
153    Level: advanced
154 
155    Notes: ${PETSC_ARCH}, ${PETSC_DIR}, ${PETSC_LIB_DIR},  or ${any environmental variable}
156            occuring in pathname will be replaced with appropriate values.
157          If your function is not being put into a shared library then use PCRegister() instead
158 
159 .keywords: PC, register
160 
161 .seealso: PCRegisterAll(), PCRegisterDestroy()
162 M*/
163 #if defined(PETSC_USE_DYNAMIC_LIBRARIES)
164 #define PCRegisterDynamic(a,b,c,d) PCRegister(a,b,c,0)
165 #else
166 #define PCRegisterDynamic(a,b,c,d) PCRegister(a,b,c,d)
167 #endif
168 
169 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDestroy(PC);
170 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetFromOptions(PC);
171 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetType(PC,const PCType*);
172 
173 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorGetMatrix(PC,Mat*);
174 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetModifySubMatrices(PC,PetscErrorCode(*)(PC,PetscInt,const IS[],const IS[],Mat[],void*),void*);
175 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCModifySubMatrices(PC,PetscInt,const IS[],const IS[],Mat[],void*);
176 
177 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetOperators(PC,Mat,Mat,MatStructure);
178 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOperators(PC,Mat*,Mat*,MatStructure*);
179 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOperatorsSet(PC,PetscTruth*,PetscTruth*);
180 
181 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCView(PC,PetscViewer);
182 
183 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetOptionsPrefix(PC,const char[]);
184 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCAppendOptionsPrefix(PC,const char[]);
185 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOptionsPrefix(PC,const char*[]);
186 
187 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCComputeExplicitOperator(PC,Mat*);
188 
189 /*
190       These are used to provide extra scaling of preconditioned
191    operator for time-stepping schemes like in SUNDIALS
192 */
193 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScale(PC,PetscTruth*);
194 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleLeft(PC,Vec,Vec);
195 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleRight(PC,Vec,Vec);
196 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleSet(PC,Vec);
197 
198 /* ------------- options specific to particular preconditioners --------- */
199 
200 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseRowMax(PC);
201 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseRowSum(PC);
202 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseAbs(PC);
203 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetSymmetric(PC,MatSORType);
204 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetOmega(PC,PetscReal);
205 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetIterations(PC,PetscInt,PetscInt);
206 
207 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCEisenstatSetOmega(PC,PetscReal);
208 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCEisenstatNoDiagonalScaling(PC);
209 
210 #define USE_PRECONDITIONER_MATRIX 0
211 #define USE_TRUE_MATRIX           1
212 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetUseTrueLocal(PC);
213 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetTotalBlocks(PC,PetscInt,const PetscInt[]);
214 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetLocalBlocks(PC,PetscInt,const PetscInt[]);
215 
216 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCKSPSetUseTrue(PC);
217 
218 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApply(PC,PetscErrorCode (*)(void*,Vec,Vec));
219 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyBA(PC,PetscErrorCode (*)(void*,PCSide,Vec,Vec,Vec));
220 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyTranspose(PC,PetscErrorCode (*)(void*,Vec,Vec));
221 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetSetUp(PC,PetscErrorCode (*)(void*));
222 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyRichardson(PC,PetscErrorCode (*)(void*,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,PetscInt,PetscInt*,PCRichardsonConvergedReason*));
223 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetView(PC,PetscErrorCode (*)(void*,PetscViewer));
224 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetDestroy(PC,PetscErrorCode (*)(void*));
225 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellGetContext(PC,void**);
226 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetContext(PC,void*);
227 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetName(PC,const char[]);
228 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellGetName(PC,char*[]);
229 
230 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetZeroPivot(PC,PetscReal);
231 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftNonzero(PC,PetscReal);
232 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftPd(PC,PetscTruth);
233 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetMatSolverPackage(PC,const MatSolverPackage);
234 
235 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetFill(PC,PetscReal);
236 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetPivoting(PC,PetscReal);
237 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorReorderForNonzeroDiagonal(PC,PetscReal);
238 
239 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetMatOrderingType(PC,const MatOrderingType);
240 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetReuseOrdering(PC,PetscTruth);
241 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetReuseFill(PC,PetscTruth);
242 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetUseInPlace(PC);
243 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetAllowDiagonalFill(PC);
244 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetPivotInBlocks(PC,PetscTruth);
245 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftInBlocks(PC,PetscReal);
246 
247 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetLevels(PC,PetscInt);
248 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetUseDropTolerance(PC,PetscReal,PetscReal,PetscInt);
249 
250 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetLocalSubdomains(PC,PetscInt,IS[]);
251 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetTotalSubdomains(PC,PetscInt,IS[]);
252 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetOverlap(PC,PetscInt);
253 /*E
254     PCASMType - Type of additive Schwarz method to use
255 
256 $  PC_ASM_BASIC - symmetric version where residuals from the ghost points are used
257 $                 and computed values in ghost regions are added together. Classical
258 $                 standard additive Schwarz
259 $  PC_ASM_RESTRICT - residuals from ghost points are used but computed values in ghost
260 $                    region are discarded. Default
261 $  PC_ASM_INTERPOLATE - residuals from ghost points are not used, computed values in ghost
262 $                       region are added back in
263 $  PC_ASM_NONE - ghost point residuals are not used, computed ghost values are discarded
264 $                not very good.
265 
266    Level: beginner
267 
268 .seealso: PCASMSetType()
269 E*/
270 typedef enum {PC_ASM_BASIC = 3,PC_ASM_RESTRICT = 1,PC_ASM_INTERPOLATE = 2,PC_ASM_NONE = 0} PCASMType;
271 extern const char *PCASMTypes[];
272 
273 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetType(PC,PCASMType);
274 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMCreateSubdomains2D(PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt *,IS **);
275 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetUseInPlace(PC);
276 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMGetLocalSubdomains(PC,PetscInt*,IS*[]);
277 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMGetLocalSubmatrices(PC,PetscInt*,Mat*[]);
278 
279 /*E
280     PCCompositeType - Determines how two or more preconditioner are composed
281 
282 $  PC_COMPOSITE_ADDITIVE - results from application of all preconditioners are added together
283 $  PC_COMPOSITE_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly
284 $                                computed after the previous preconditioner application
285 $  PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly
286 $                                computed from first preconditioner to last and then back (Use only for symmetric matrices and preconditions)
287 $  PC_COMPOSITE_SPECIAL - This is very special for a matrix of the form alpha I + R + S
288 $                         where first preconditioner is built from alpha I + S and second from
289 $                         alpha I + R
290 
291    Level: beginner
292 
293 .seealso: PCCompositeSetType()
294 E*/
295 typedef enum {PC_COMPOSITE_ADDITIVE,PC_COMPOSITE_MULTIPLICATIVE,PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE,PC_COMPOSITE_SPECIAL,PC_COMPOSITE_SCHUR} PCCompositeType;
296 extern const char *PCCompositeTypes[];
297 
298 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSetUseTrue(PC);
299 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSetType(PC,PCCompositeType);
300 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeAddPC(PC,PCType);
301 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeGetPC(PC,PetscInt,PC *);
302 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSpecialSetAlpha(PC,PetscScalar);
303 
304 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantSetNumber(PC,PetscInt);
305 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantSetScatter(PC,VecScatter,VecScatter);
306 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantGetOperators(PC,Mat*,Mat*);
307 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantGetPC(PC,PC*);
308 
309 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetEpsilon(PC,double);
310 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetNBSteps(PC,PetscInt);
311 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetMax(PC,PetscInt);
312 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetMaxNew(PC,PetscInt);
313 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetBlockSize(PC,PetscInt);
314 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetCacheSize(PC,PetscInt);
315 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetVerbose(PC,PetscInt);
316 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetSp(PC,PetscInt);
317 
318 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCHYPRESetType(PC,const char[]);
319 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCHYPREGetType(PC,const char*[]);
320 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiGetLocalBlocks(PC,PetscInt*,const PetscInt*[]);
321 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiGetTotalBlocks(PC,PetscInt*,const PetscInt*[]);
322 
323 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetFields(PC,PetscInt,PetscInt*);
324 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetType(PC,PCCompositeType);
325 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetBlockSize(PC,PetscInt);
326 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetIS(PC,IS);
327 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSchurPrecondition(PC,PetscTruth);
328 
329 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGalerkinSetRestriction(PC,Mat);
330 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGalerkinSetInterpolation(PC,Mat);
331 
332 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetCoordinates(PC,PetscInt,PetscReal*);
333 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSASetVectors(PC,PetscInt,PetscReal *);
334 
335 
336 PETSC_EXTERN_CXX_END
337 #endif /* __PETSCPC_H */
338