xref: /petsc/include/petscpc.h (revision 5d0c19d75c660d4fec594a5399ec8d8ba29c54a8) 
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 #define PCBFBT            "bfbt"
71 
72 /* Logging support */
73 extern PetscCookie PETSCKSP_DLLEXPORT PC_COOKIE;
74 
75 /*E
76     PCSide - If the preconditioner is to be applied to the left, right
77      or symmetrically around the operator.
78 
79    Level: beginner
80 
81 .seealso:
82 E*/
83 typedef enum { PC_LEFT,PC_RIGHT,PC_SYMMETRIC } PCSide;
84 extern const char *PCSides[];
85 
86 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCreate(MPI_Comm,PC*);
87 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetType(PC,const PCType);
88 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetUp(PC);
89 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetUpOnBlocks(PC);
90 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApply(PC,Vec,Vec);
91 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplySymmetricLeft(PC,Vec,Vec);
92 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplySymmetricRight(PC,Vec,Vec);
93 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyBAorAB(PC,PCSide,Vec,Vec,Vec);
94 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyTranspose(PC,Vec,Vec);
95 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyTransposeExists(PC,PetscTruth*);
96 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyBAorABTranspose(PC,PCSide,Vec,Vec,Vec);
97 
98 /*E
99     PCRichardsonConvergedReason - reason a PCApplyRichardson method terminates
100 
101    Level: advanced
102 
103    Notes: this must match finclude/petscpc.h and the KSPConvergedReason values in petscksp.h
104 
105 .seealso: PCApplyRichardson()
106 E*/
107 typedef enum {
108               PCRICHARDSON_CONVERGED_RTOL               =  2,
109               PCRICHARDSON_CONVERGED_ATOL               =  3,
110               PCRICHARDSON_CONVERGED_ITS                =  4,
111               PCRICHARDSON_DIVERGED_DTOL                = -4} PCRichardsonConvergedReason;
112 
113 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyRichardson(PC,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,PetscInt,PetscInt*,PCRichardsonConvergedReason*);
114 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyRichardsonExists(PC,PetscTruth*);
115 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetInitialGuessNonzero(PC,PetscTruth);
116 
117 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegisterDestroy(void);
118 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegisterAll(const char[]);
119 extern PetscTruth PCRegisterAllCalled;
120 
121 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegister(const char[],const char[],const char[],PetscErrorCode(*)(PC));
122 
123 /*MC
124    PCRegisterDynamic - Adds a method to the preconditioner package.
125 
126    Synopsis:
127    PetscErrorCode PCRegisterDynamic(char *name_solver,char *path,char *name_create,PetscErrorCode (*routine_create)(PC))
128 
129    Not collective
130 
131    Input Parameters:
132 +  name_solver - name of a new user-defined solver
133 .  path - path (either absolute or relative) the library containing this solver
134 .  name_create - name of routine to create method context
135 -  routine_create - routine to create method context
136 
137    Notes:
138    PCRegisterDynamic() may be called multiple times to add several user-defined preconditioners.
139 
140    If dynamic libraries are used, then the fourth input argument (routine_create)
141    is ignored.
142 
143    Sample usage:
144 .vb
145    PCRegisterDynamic("my_solver","/home/username/my_lib/lib/libO/solaris/mylib",
146               "MySolverCreate",MySolverCreate);
147 .ve
148 
149    Then, your solver can be chosen with the procedural interface via
150 $     PCSetType(pc,"my_solver")
151    or at runtime via the option
152 $     -pc_type my_solver
153 
154    Level: advanced
155 
156    Notes: ${PETSC_ARCH}, ${PETSC_DIR}, ${PETSC_LIB_DIR},  or ${any environmental variable}
157            occuring in pathname will be replaced with appropriate values.
158          If your function is not being put into a shared library then use PCRegister() instead
159 
160 .keywords: PC, register
161 
162 .seealso: PCRegisterAll(), PCRegisterDestroy()
163 M*/
164 #if defined(PETSC_USE_DYNAMIC_LIBRARIES)
165 #define PCRegisterDynamic(a,b,c,d) PCRegister(a,b,c,0)
166 #else
167 #define PCRegisterDynamic(a,b,c,d) PCRegister(a,b,c,d)
168 #endif
169 
170 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDestroy(PC);
171 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetFromOptions(PC);
172 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetType(PC,const PCType*);
173 
174 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorGetMatrix(PC,Mat*);
175 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetModifySubMatrices(PC,PetscErrorCode(*)(PC,PetscInt,const IS[],const IS[],Mat[],void*),void*);
176 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCModifySubMatrices(PC,PetscInt,const IS[],const IS[],Mat[],void*);
177 
178 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetOperators(PC,Mat,Mat,MatStructure);
179 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOperators(PC,Mat*,Mat*,MatStructure*);
180 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOperatorsSet(PC,PetscTruth*,PetscTruth*);
181 
182 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCView(PC,PetscViewer);
183 
184 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetOptionsPrefix(PC,const char[]);
185 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCAppendOptionsPrefix(PC,const char[]);
186 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOptionsPrefix(PC,const char*[]);
187 
188 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCComputeExplicitOperator(PC,Mat*);
189 
190 /*
191       These are used to provide extra scaling of preconditioned
192    operator for time-stepping schemes like in SUNDIALS
193 */
194 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScale(PC,PetscTruth*);
195 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleLeft(PC,Vec,Vec);
196 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleRight(PC,Vec,Vec);
197 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleSet(PC,Vec);
198 
199 /* ------------- options specific to particular preconditioners --------- */
200 
201 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseRowMax(PC);
202 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseRowSum(PC);
203 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseAbs(PC);
204 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetSymmetric(PC,MatSORType);
205 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetOmega(PC,PetscReal);
206 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetIterations(PC,PetscInt,PetscInt);
207 
208 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCEisenstatSetOmega(PC,PetscReal);
209 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCEisenstatNoDiagonalScaling(PC);
210 
211 #define USE_PRECONDITIONER_MATRIX 0
212 #define USE_TRUE_MATRIX           1
213 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetUseTrueLocal(PC);
214 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetTotalBlocks(PC,PetscInt,const PetscInt[]);
215 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetLocalBlocks(PC,PetscInt,const PetscInt[]);
216 
217 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCKSPSetUseTrue(PC);
218 
219 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApply(PC,PetscErrorCode (*)(void*,Vec,Vec));
220 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyBA(PC,PetscErrorCode (*)(void*,PCSide,Vec,Vec,Vec));
221 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyTranspose(PC,PetscErrorCode (*)(void*,Vec,Vec));
222 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetSetUp(PC,PetscErrorCode (*)(void*));
223 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyRichardson(PC,PetscErrorCode (*)(void*,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,PetscInt,PetscInt*,PCRichardsonConvergedReason*));
224 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetView(PC,PetscErrorCode (*)(void*,PetscViewer));
225 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetDestroy(PC,PetscErrorCode (*)(void*));
226 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellGetContext(PC,void**);
227 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetContext(PC,void*);
228 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetName(PC,const char[]);
229 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellGetName(PC,char*[]);
230 
231 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetZeroPivot(PC,PetscReal);
232 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftNonzero(PC,PetscReal);
233 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftPd(PC,PetscTruth);
234 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetMatSolverPackage(PC,const MatSolverPackage);
235 
236 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetFill(PC,PetscReal);
237 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetPivoting(PC,PetscReal);
238 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorReorderForNonzeroDiagonal(PC,PetscReal);
239 
240 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetMatOrderingType(PC,const MatOrderingType);
241 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetReuseOrdering(PC,PetscTruth);
242 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetReuseFill(PC,PetscTruth);
243 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetUseInPlace(PC);
244 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetAllowDiagonalFill(PC);
245 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetPivotInBlocks(PC,PetscTruth);
246 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftInBlocks(PC,PetscReal);
247 
248 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetLevels(PC,PetscInt);
249 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetUseDropTolerance(PC,PetscReal,PetscReal,PetscInt);
250 
251 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetLocalSubdomains(PC,PetscInt,IS[]);
252 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetTotalSubdomains(PC,PetscInt,IS[]);
253 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetOverlap(PC,PetscInt);
254 /*E
255     PCASMType - Type of additive Schwarz method to use
256 
257 $  PC_ASM_BASIC - symmetric version where residuals from the ghost points are used
258 $                 and computed values in ghost regions are added together. Classical
259 $                 standard additive Schwarz
260 $  PC_ASM_RESTRICT - residuals from ghost points are used but computed values in ghost
261 $                    region are discarded. Default
262 $  PC_ASM_INTERPOLATE - residuals from ghost points are not used, computed values in ghost
263 $                       region are added back in
264 $  PC_ASM_NONE - ghost point residuals are not used, computed ghost values are discarded
265 $                not very good.
266 
267    Level: beginner
268 
269 .seealso: PCASMSetType()
270 E*/
271 typedef enum {PC_ASM_BASIC = 3,PC_ASM_RESTRICT = 1,PC_ASM_INTERPOLATE = 2,PC_ASM_NONE = 0} PCASMType;
272 extern const char *PCASMTypes[];
273 
274 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetType(PC,PCASMType);
275 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMCreateSubdomains2D(PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt *,IS **);
276 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetUseInPlace(PC);
277 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMGetLocalSubdomains(PC,PetscInt*,IS*[]);
278 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMGetLocalSubmatrices(PC,PetscInt*,Mat*[]);
279 
280 /*E
281     PCCompositeType - Determines how two or more preconditioner are composed
282 
283 $  PC_COMPOSITE_ADDITIVE - results from application of all preconditioners are added together
284 $  PC_COMPOSITE_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly
285 $                                computed after the previous preconditioner application
286 $  PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly
287 $                                computed from first preconditioner to last and then back (Use only for symmetric matrices and preconditions)
288 $  PC_COMPOSITE_SPECIAL - This is very special for a matrix of the form alpha I + R + S
289 $                         where first preconditioner is built from alpha I + S and second from
290 $                         alpha I + R
291 
292    Level: beginner
293 
294 .seealso: PCCompositeSetType()
295 E*/
296 typedef enum {PC_COMPOSITE_ADDITIVE,PC_COMPOSITE_MULTIPLICATIVE,PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE,PC_COMPOSITE_SPECIAL,PC_COMPOSITE_SCHUR} PCCompositeType;
297 extern const char *PCCompositeTypes[];
298 
299 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSetUseTrue(PC);
300 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSetType(PC,PCCompositeType);
301 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeAddPC(PC,PCType);
302 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeGetPC(PC,PetscInt,PC *);
303 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSpecialSetAlpha(PC,PetscScalar);
304 
305 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantSetNumber(PC,PetscInt);
306 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantSetScatter(PC,VecScatter,VecScatter);
307 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantGetOperators(PC,Mat*,Mat*);
308 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantGetPC(PC,PC*);
309 
310 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetEpsilon(PC,double);
311 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetNBSteps(PC,PetscInt);
312 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetMax(PC,PetscInt);
313 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetMaxNew(PC,PetscInt);
314 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetBlockSize(PC,PetscInt);
315 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetCacheSize(PC,PetscInt);
316 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetVerbose(PC,PetscInt);
317 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetSp(PC,PetscInt);
318 
319 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCHYPRESetType(PC,const char[]);
320 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCHYPREGetType(PC,const char*[]);
321 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiGetLocalBlocks(PC,PetscInt*,const PetscInt*[]);
322 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiGetTotalBlocks(PC,PetscInt*,const PetscInt*[]);
323 
324 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetFields(PC,PetscInt,PetscInt*);
325 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetType(PC,PCCompositeType);
326 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetBlockSize(PC,PetscInt);
327 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetIS(PC,IS);
328 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSchurPrecondition(PC,PetscTruth);
329 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitGetSchurBlocks(PC,Mat*,Mat*,Mat*,Mat*);
330 
331 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGalerkinSetRestriction(PC,Mat);
332 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGalerkinSetInterpolation(PC,Mat);
333 
334 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetCoordinates(PC,PetscInt,PetscReal*);
335 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSASetVectors(PC,PetscInt,PetscReal *);
336 
337 
338 PETSC_EXTERN_CXX_END
339 #endif /* __PETSCPC_H */
340