xref: /petsc/include/petscpc.h (revision e3caeda681d93b7b1d053090fe6dee7657faa56d) 
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 PCEXOTIC          "exotic"
67 #define PCOPENMP          "openmp"
68 #define PCSUPPORTGRAPH    "supportgraph"
69 #define PCASA             "asa"
70 #define PCCP              "cp"
71 #define PCBFBT            "bfbt"
72 #define PCPYTHON          "python"
73 #define PCPFMG            "pfmg"
74 
75 /* Logging support */
76 extern PetscCookie PETSCKSP_DLLEXPORT PC_COOKIE;
77 
78 /*E
79     PCSide - If the preconditioner is to be applied to the left, right
80      or symmetrically around the operator.
81 
82    Level: beginner
83 
84 .seealso:
85 E*/
86 typedef enum { PC_LEFT,PC_RIGHT,PC_SYMMETRIC } PCSide;
87 extern const char *PCSides[];
88 
89 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCreate(MPI_Comm,PC*);
90 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetType(PC,const PCType);
91 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetUp(PC);
92 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetUpOnBlocks(PC);
93 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApply(PC,Vec,Vec);
94 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplySymmetricLeft(PC,Vec,Vec);
95 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplySymmetricRight(PC,Vec,Vec);
96 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyBAorAB(PC,PCSide,Vec,Vec,Vec);
97 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyTranspose(PC,Vec,Vec);
98 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyTransposeExists(PC,PetscTruth*);
99 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyBAorABTranspose(PC,PCSide,Vec,Vec,Vec);
100 
101 /*E
102     PCRichardsonConvergedReason - reason a PCApplyRichardson method terminates
103 
104    Level: advanced
105 
106    Notes: this must match finclude/petscpc.h and the KSPConvergedReason values in petscksp.h
107 
108 .seealso: PCApplyRichardson()
109 E*/
110 typedef enum {
111               PCRICHARDSON_CONVERGED_RTOL               =  2,
112               PCRICHARDSON_CONVERGED_ATOL               =  3,
113               PCRICHARDSON_CONVERGED_ITS                =  4,
114               PCRICHARDSON_DIVERGED_DTOL                = -4} PCRichardsonConvergedReason;
115 
116 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyRichardson(PC,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,PetscInt,PetscInt*,PCRichardsonConvergedReason*);
117 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCApplyRichardsonExists(PC,PetscTruth*);
118 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetInitialGuessNonzero(PC,PetscTruth);
119 
120 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegisterDestroy(void);
121 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegisterAll(const char[]);
122 extern PetscTruth PCRegisterAllCalled;
123 
124 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRegister(const char[],const char[],const char[],PetscErrorCode(*)(PC));
125 
126 /*MC
127    PCRegisterDynamic - Adds a method to the preconditioner package.
128 
129    Synopsis:
130    PetscErrorCode PCRegisterDynamic(char *name_solver,char *path,char *name_create,PetscErrorCode (*routine_create)(PC))
131 
132    Not collective
133 
134    Input Parameters:
135 +  name_solver - name of a new user-defined solver
136 .  path - path (either absolute or relative) the library containing this solver
137 .  name_create - name of routine to create method context
138 -  routine_create - routine to create method context
139 
140    Notes:
141    PCRegisterDynamic() may be called multiple times to add several user-defined preconditioners.
142 
143    If dynamic libraries are used, then the fourth input argument (routine_create)
144    is ignored.
145 
146    Sample usage:
147 .vb
148    PCRegisterDynamic("my_solver","/home/username/my_lib/lib/libO/solaris/mylib",
149               "MySolverCreate",MySolverCreate);
150 .ve
151 
152    Then, your solver can be chosen with the procedural interface via
153 $     PCSetType(pc,"my_solver")
154    or at runtime via the option
155 $     -pc_type my_solver
156 
157    Level: advanced
158 
159    Notes: ${PETSC_ARCH}, ${PETSC_DIR}, ${PETSC_LIB_DIR},  or ${any environmental variable}
160            occuring in pathname will be replaced with appropriate values.
161          If your function is not being put into a shared library then use PCRegister() instead
162 
163 .keywords: PC, register
164 
165 .seealso: PCRegisterAll(), PCRegisterDestroy()
166 M*/
167 #if defined(PETSC_USE_DYNAMIC_LIBRARIES)
168 #define PCRegisterDynamic(a,b,c,d) PCRegister(a,b,c,0)
169 #else
170 #define PCRegisterDynamic(a,b,c,d) PCRegister(a,b,c,d)
171 #endif
172 
173 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDestroy(PC);
174 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetFromOptions(PC);
175 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetType(PC,const PCType*);
176 
177 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorGetMatrix(PC,Mat*);
178 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetModifySubMatrices(PC,PetscErrorCode(*)(PC,PetscInt,const IS[],const IS[],Mat[],void*),void*);
179 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCModifySubMatrices(PC,PetscInt,const IS[],const IS[],Mat[],void*);
180 
181 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetOperators(PC,Mat,Mat,MatStructure);
182 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOperators(PC,Mat*,Mat*,MatStructure*);
183 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOperatorsSet(PC,PetscTruth*,PetscTruth*);
184 
185 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCView(PC,PetscViewer);
186 
187 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetOptionsPrefix(PC,const char[]);
188 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCAppendOptionsPrefix(PC,const char[]);
189 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGetOptionsPrefix(PC,const char*[]);
190 
191 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCComputeExplicitOperator(PC,Mat*);
192 
193 /*
194       These are used to provide extra scaling of preconditioned
195    operator for time-stepping schemes like in SUNDIALS
196 */
197 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScale(PC,PetscTruth*);
198 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleLeft(PC,Vec,Vec);
199 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleRight(PC,Vec,Vec);
200 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCDiagonalScaleSet(PC,Vec);
201 
202 /* ------------- options specific to particular preconditioners --------- */
203 
204 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseRowMax(PC);
205 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseRowSum(PC);
206 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCJacobiSetUseAbs(PC);
207 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetSymmetric(PC,MatSORType);
208 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetOmega(PC,PetscReal);
209 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSORSetIterations(PC,PetscInt,PetscInt);
210 
211 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCEisenstatSetOmega(PC,PetscReal);
212 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCEisenstatNoDiagonalScaling(PC);
213 
214 #define USE_PRECONDITIONER_MATRIX 0
215 #define USE_TRUE_MATRIX           1
216 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetUseTrueLocal(PC);
217 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetTotalBlocks(PC,PetscInt,const PetscInt[]);
218 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiSetLocalBlocks(PC,PetscInt,const PetscInt[]);
219 
220 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCKSPSetUseTrue(PC);
221 
222 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApply(PC,PetscErrorCode (*)(void*,Vec,Vec));
223 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyBA(PC,PetscErrorCode (*)(void*,PCSide,Vec,Vec,Vec));
224 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyTranspose(PC,PetscErrorCode (*)(void*,Vec,Vec));
225 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetSetUp(PC,PetscErrorCode (*)(void*));
226 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetApplyRichardson(PC,PetscErrorCode (*)(void*,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,PetscInt,PetscInt*,PCRichardsonConvergedReason*));
227 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetView(PC,PetscErrorCode (*)(void*,PetscViewer));
228 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetDestroy(PC,PetscErrorCode (*)(void*));
229 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellGetContext(PC,void**);
230 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetContext(PC,void*);
231 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellSetName(PC,const char[]);
232 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCShellGetName(PC,char*[]);
233 
234 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetZeroPivot(PC,PetscReal);
235 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftNonzero(PC,PetscReal);
236 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftPd(PC,PetscTruth);
237 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetMatSolverPackage(PC,const MatSolverPackage);
238 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorGetMatSolverPackage(PC,const MatSolverPackage*);
239 
240 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetFill(PC,PetscReal);
241 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetPivoting(PC,PetscReal);
242 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorReorderForNonzeroDiagonal(PC,PetscReal);
243 
244 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetMatOrderingType(PC,const MatOrderingType);
245 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetReuseOrdering(PC,PetscTruth);
246 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetReuseFill(PC,PetscTruth);
247 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetUseInPlace(PC);
248 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetAllowDiagonalFill(PC);
249 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetPivotInBlocks(PC,PetscTruth);
250 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetShiftInBlocks(PC,PetscReal);
251 
252 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetLevels(PC,PetscInt);
253 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetUseDropTolerance(PC,PetscReal,PetscReal,PetscInt);
254 
255 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetLocalSubdomains(PC,PetscInt,IS[]);
256 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetTotalSubdomains(PC,PetscInt,IS[]);
257 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetOverlap(PC,PetscInt);
258 /*E
259     PCASMType - Type of additive Schwarz method to use
260 
261 $  PC_ASM_BASIC - symmetric version where residuals from the ghost points are used
262 $                 and computed values in ghost regions are added together. Classical
263 $                 standard additive Schwarz
264 $  PC_ASM_RESTRICT - residuals from ghost points are used but computed values in ghost
265 $                    region are discarded. Default
266 $  PC_ASM_INTERPOLATE - residuals from ghost points are not used, computed values in ghost
267 $                       region are added back in
268 $  PC_ASM_NONE - ghost point residuals are not used, computed ghost values are discarded
269 $                not very good.
270 
271    Level: beginner
272 
273 .seealso: PCASMSetType()
274 E*/
275 typedef enum {PC_ASM_BASIC = 3,PC_ASM_RESTRICT = 1,PC_ASM_INTERPOLATE = 2,PC_ASM_NONE = 0} PCASMType;
276 extern const char *PCASMTypes[];
277 
278 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetType(PC,PCASMType);
279 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMCreateSubdomains(Mat,PetscInt,IS*[]);
280 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMDestroySubdomains(PetscInt,IS[]);
281 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMCreateSubdomains2D(PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt *,IS **);
282 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMSetUseInPlace(PC);
283 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMGetLocalSubdomains(PC,PetscInt*,IS*[]);
284 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCASMGetLocalSubmatrices(PC,PetscInt*,Mat*[]);
285 
286 /*E
287     PCCompositeType - Determines how two or more preconditioner are composed
288 
289 $  PC_COMPOSITE_ADDITIVE - results from application of all preconditioners are added together
290 $  PC_COMPOSITE_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly
291 $                                computed after the previous preconditioner application
292 $  PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly
293 $                                computed from first preconditioner to last and then back (Use only for symmetric matrices and preconditions)
294 $  PC_COMPOSITE_SPECIAL - This is very special for a matrix of the form alpha I + R + S
295 $                         where first preconditioner is built from alpha I + S and second from
296 $                         alpha I + R
297 
298    Level: beginner
299 
300 .seealso: PCCompositeSetType()
301 E*/
302 typedef enum {PC_COMPOSITE_ADDITIVE,PC_COMPOSITE_MULTIPLICATIVE,PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE,PC_COMPOSITE_SPECIAL,PC_COMPOSITE_SCHUR} PCCompositeType;
303 extern const char *PCCompositeTypes[];
304 
305 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSetUseTrue(PC);
306 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSetType(PC,PCCompositeType);
307 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeAddPC(PC,PCType);
308 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeGetPC(PC,PetscInt,PC *);
309 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCCompositeSpecialSetAlpha(PC,PetscScalar);
310 
311 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantSetNumber(PC,PetscInt);
312 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantSetScatter(PC,VecScatter,VecScatter);
313 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantGetOperators(PC,Mat*,Mat*);
314 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCRedundantGetPC(PC,PC*);
315 
316 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetEpsilon(PC,double);
317 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetNBSteps(PC,PetscInt);
318 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetMax(PC,PetscInt);
319 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetMaxNew(PC,PetscInt);
320 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetBlockSize(PC,PetscInt);
321 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetCacheSize(PC,PetscInt);
322 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetVerbose(PC,PetscInt);
323 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSPAISetSp(PC,PetscInt);
324 
325 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCHYPRESetType(PC,const char[]);
326 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCHYPREGetType(PC,const char*[]);
327 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiGetLocalBlocks(PC,PetscInt*,const PetscInt*[]);
328 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCBJacobiGetTotalBlocks(PC,PetscInt*,const PetscInt*[]);
329 
330 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetFields(PC,PetscInt,PetscInt*);
331 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetType(PC,PCCompositeType);
332 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetBlockSize(PC,PetscInt);
333 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSetIS(PC,IS);
334 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitSchurPrecondition(PC,PetscTruth);
335 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCFieldSplitGetSchurBlocks(PC,Mat*,Mat*,Mat*,Mat*);
336 
337 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGalerkinSetRestriction(PC,Mat);
338 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCGalerkinSetInterpolation(PC,Mat);
339 
340 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSetCoordinates(PC,PetscInt,PetscReal*);
341 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCSASetVectors(PC,PetscInt,PetscReal *);
342 
343 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT PCPythonSetType(PC,const char[]);
344 
345 PETSC_EXTERN_CXX_END
346 #endif /* __PETSCPC_H */
347