1 /* 2 Preconditioner module. 3 */ 4 #if !defined(__PETSCPC_H) 5 #define __PETSCPC_H 6 #include <petscmat.h> 7 #include <petscdmtypes.h> 8 9 PETSC_EXTERN PetscErrorCode PCInitializePackage(void); 10 11 /* 12 PCList contains the list of preconditioners currently registered 13 These are added with PCRegister() 14 */ 15 PETSC_EXTERN PetscFunctionList 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 /*J 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 J*/ 39 typedef const char* PCType; 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 PCGASM "gasm" 52 #define PCKSP "ksp" 53 #define PCCOMPOSITE "composite" 54 #define PCREDUNDANT "redundant" 55 #define PCSPAI "spai" 56 #define PCNN "nn" 57 #define PCCHOLESKY "cholesky" 58 #define PCPBJACOBI "pbjacobi" 59 #define PCMAT "mat" 60 #define PCHYPRE "hypre" 61 #define PCPARMS "parms" 62 #define PCFIELDSPLIT "fieldsplit" 63 #define PCTFS "tfs" 64 #define PCML "ml" 65 #define PCGALERKIN "galerkin" 66 #define PCEXOTIC "exotic" 67 #define PCHMPI "hmpi" 68 #define PCSUPPORTGRAPH "supportgraph" 69 #define PCASA "asa" 70 #define PCCP "cp" 71 #define PCBFBT "bfbt" 72 #define PCLSC "lsc" 73 #define PCPYTHON "python" 74 #define PCPFMG "pfmg" 75 #define PCSYSPFMG "syspfmg" 76 #define PCREDISTRIBUTE "redistribute" 77 #define PCSVD "svd" 78 #define PCGAMG "gamg" 79 #define PCSACUSP "sacusp" /* these four run on NVIDIA GPUs using CUSP */ 80 #define PCSACUSPPOLY "sacusppoly" 81 #define PCBICGSTABCUSP "bicgstabcusp" 82 #define PCAINVCUSP "ainvcusp" 83 #define PCBDDC "bddc" 84 85 /* Logging support */ 86 PETSC_EXTERN PetscClassId PC_CLASSID; 87 88 /*E 89 PCSide - If the preconditioner is to be applied to the left, right 90 or symmetrically around the operator. 91 92 Level: beginner 93 94 .seealso: 95 E*/ 96 typedef enum { PC_SIDE_DEFAULT=-1,PC_LEFT,PC_RIGHT,PC_SYMMETRIC} PCSide; 97 #define PC_SIDE_MAX (PC_SYMMETRIC + 1) 98 PETSC_EXTERN const char *const *const PCSides; 99 100 PETSC_EXTERN PetscErrorCode PCCreate(MPI_Comm,PC*); 101 PETSC_EXTERN PetscErrorCode PCSetType(PC,PCType); 102 PETSC_EXTERN PetscErrorCode PCSetUp(PC); 103 PETSC_EXTERN PetscErrorCode PCSetUpOnBlocks(PC); 104 PETSC_EXTERN PetscErrorCode PCApply(PC,Vec,Vec); 105 PETSC_EXTERN PetscErrorCode PCApplySymmetricLeft(PC,Vec,Vec); 106 PETSC_EXTERN PetscErrorCode PCApplySymmetricRight(PC,Vec,Vec); 107 PETSC_EXTERN PetscErrorCode PCApplyBAorAB(PC,PCSide,Vec,Vec,Vec); 108 PETSC_EXTERN PetscErrorCode PCApplyTranspose(PC,Vec,Vec); 109 PETSC_EXTERN PetscErrorCode PCApplyTransposeExists(PC,PetscBool *); 110 PETSC_EXTERN PetscErrorCode PCApplyBAorABTranspose(PC,PCSide,Vec,Vec,Vec); 111 112 #define PC_FILE_CLASSID 1211222 113 114 /*E 115 PCRichardsonConvergedReason - reason a PCApplyRichardson method terminates 116 117 Level: advanced 118 119 Notes: this must match finclude/petscpc.h and the KSPConvergedReason values in petscksp.h 120 121 .seealso: PCApplyRichardson() 122 E*/ 123 typedef enum { 124 PCRICHARDSON_CONVERGED_RTOL = 2, 125 PCRICHARDSON_CONVERGED_ATOL = 3, 126 PCRICHARDSON_CONVERGED_ITS = 4, 127 PCRICHARDSON_DIVERGED_DTOL = -4} PCRichardsonConvergedReason; 128 129 PETSC_EXTERN PetscErrorCode PCApplyRichardson(PC,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,PetscInt,PetscBool ,PetscInt*,PCRichardsonConvergedReason*); 130 PETSC_EXTERN PetscErrorCode PCApplyRichardsonExists(PC,PetscBool *); 131 PETSC_EXTERN PetscErrorCode PCSetInitialGuessNonzero(PC,PetscBool ); 132 PETSC_EXTERN PetscErrorCode PCSetUseAmat(PC,PetscBool); 133 PETSC_EXTERN PetscErrorCode PCGetUseAmat(PC,PetscBool*); 134 135 PETSC_EXTERN PetscErrorCode PCRegisterDestroy(void); 136 PETSC_EXTERN PetscErrorCode PCRegisterAll(void); 137 PETSC_EXTERN PetscBool PCRegisterAllCalled; 138 139 PETSC_EXTERN PetscErrorCode PCRegister(const char[],PetscErrorCode(*)(PC)); 140 141 PETSC_EXTERN PetscErrorCode PCReset(PC); 142 PETSC_EXTERN PetscErrorCode PCDestroy(PC*); 143 PETSC_EXTERN PetscErrorCode PCSetFromOptions(PC); 144 PETSC_EXTERN PetscErrorCode PCGetType(PC,PCType*); 145 146 PETSC_EXTERN PetscErrorCode PCFactorGetMatrix(PC,Mat*); 147 PETSC_EXTERN PetscErrorCode PCSetModifySubMatrices(PC,PetscErrorCode(*)(PC,PetscInt,const IS[],const IS[],Mat[],void*),void*); 148 PETSC_EXTERN PetscErrorCode PCModifySubMatrices(PC,PetscInt,const IS[],const IS[],Mat[],void*); 149 150 PETSC_EXTERN PetscErrorCode PCSetOperators(PC,Mat,Mat,MatStructure); 151 PETSC_EXTERN PetscErrorCode PCGetOperators(PC,Mat*,Mat*,MatStructure*); 152 PETSC_EXTERN PetscErrorCode PCGetOperatorsSet(PC,PetscBool *,PetscBool *); 153 154 PETSC_EXTERN PetscErrorCode PCView(PC,PetscViewer); 155 PETSC_EXTERN PetscErrorCode PCLoad(PC,PetscViewer); 156 157 PETSC_EXTERN PetscErrorCode PCSetOptionsPrefix(PC,const char[]); 158 PETSC_EXTERN PetscErrorCode PCAppendOptionsPrefix(PC,const char[]); 159 PETSC_EXTERN PetscErrorCode PCGetOptionsPrefix(PC,const char*[]); 160 161 PETSC_EXTERN PetscErrorCode PCComputeExplicitOperator(PC,Mat*); 162 163 /* 164 These are used to provide extra scaling of preconditioned 165 operator for time-stepping schemes like in SUNDIALS 166 */ 167 PETSC_EXTERN PetscErrorCode PCGetDiagonalScale(PC,PetscBool *); 168 PETSC_EXTERN PetscErrorCode PCDiagonalScaleLeft(PC,Vec,Vec); 169 PETSC_EXTERN PetscErrorCode PCDiagonalScaleRight(PC,Vec,Vec); 170 PETSC_EXTERN PetscErrorCode PCSetDiagonalScale(PC,Vec); 171 172 /* ------------- options specific to particular preconditioners --------- */ 173 174 PETSC_EXTERN PetscErrorCode PCJacobiSetUseRowMax(PC); 175 PETSC_EXTERN PetscErrorCode PCJacobiSetUseRowSum(PC); 176 PETSC_EXTERN PetscErrorCode PCJacobiSetUseAbs(PC); 177 PETSC_EXTERN PetscErrorCode PCSORSetSymmetric(PC,MatSORType); 178 PETSC_EXTERN PetscErrorCode PCSORSetOmega(PC,PetscReal); 179 PETSC_EXTERN PetscErrorCode PCSORSetIterations(PC,PetscInt,PetscInt); 180 181 PETSC_EXTERN PetscErrorCode PCEisenstatSetOmega(PC,PetscReal); 182 PETSC_EXTERN PetscErrorCode PCEisenstatNoDiagonalScaling(PC); 183 184 PETSC_EXTERN PetscErrorCode PCBJacobiSetTotalBlocks(PC,PetscInt,const PetscInt[]); 185 PETSC_EXTERN PetscErrorCode PCBJacobiSetLocalBlocks(PC,PetscInt,const PetscInt[]); 186 187 PETSC_EXTERN PetscErrorCode PCShellSetApply(PC,PetscErrorCode (*)(PC,Vec,Vec)); 188 PETSC_EXTERN PetscErrorCode PCShellSetApplyBA(PC,PetscErrorCode (*)(PC,PCSide,Vec,Vec,Vec)); 189 PETSC_EXTERN PetscErrorCode PCShellSetApplyTranspose(PC,PetscErrorCode (*)(PC,Vec,Vec)); 190 PETSC_EXTERN PetscErrorCode PCShellSetSetUp(PC,PetscErrorCode (*)(PC)); 191 PETSC_EXTERN PetscErrorCode PCShellSetApplyRichardson(PC,PetscErrorCode (*)(PC,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,PetscInt,PetscBool ,PetscInt*,PCRichardsonConvergedReason*)); 192 PETSC_EXTERN PetscErrorCode PCShellSetView(PC,PetscErrorCode (*)(PC,PetscViewer)); 193 PETSC_EXTERN PetscErrorCode PCShellSetDestroy(PC,PetscErrorCode (*)(PC)); 194 PETSC_EXTERN PetscErrorCode PCShellGetContext(PC,void**); 195 PETSC_EXTERN PetscErrorCode PCShellSetContext(PC,void*); 196 PETSC_EXTERN PetscErrorCode PCShellSetName(PC,const char[]); 197 PETSC_EXTERN PetscErrorCode PCShellGetName(PC,const char*[]); 198 199 PETSC_EXTERN PetscErrorCode PCFactorSetZeroPivot(PC,PetscReal); 200 201 PETSC_EXTERN PetscErrorCode PCFactorSetShiftType(PC,MatFactorShiftType); 202 PETSC_EXTERN PetscErrorCode PCFactorSetShiftAmount(PC,PetscReal); 203 204 PETSC_EXTERN PetscErrorCode PCFactorSetMatSolverPackage(PC,const MatSolverPackage); 205 PETSC_EXTERN PetscErrorCode PCFactorGetMatSolverPackage(PC,const MatSolverPackage*); 206 PETSC_EXTERN PetscErrorCode PCFactorSetUpMatSolverPackage(PC); 207 208 PETSC_EXTERN PetscErrorCode PCFactorSetFill(PC,PetscReal); 209 PETSC_EXTERN PetscErrorCode PCFactorSetColumnPivot(PC,PetscReal); 210 PETSC_EXTERN PetscErrorCode PCFactorReorderForNonzeroDiagonal(PC,PetscReal); 211 212 PETSC_EXTERN PetscErrorCode PCFactorSetMatOrderingType(PC,MatOrderingType); 213 PETSC_EXTERN PetscErrorCode PCFactorSetReuseOrdering(PC,PetscBool ); 214 PETSC_EXTERN PetscErrorCode PCFactorSetReuseFill(PC,PetscBool ); 215 PETSC_EXTERN PetscErrorCode PCFactorSetUseInPlace(PC); 216 PETSC_EXTERN PetscErrorCode PCFactorSetAllowDiagonalFill(PC); 217 PETSC_EXTERN PetscErrorCode PCFactorSetPivotInBlocks(PC,PetscBool ); 218 219 PETSC_EXTERN PetscErrorCode PCFactorSetLevels(PC,PetscInt); 220 PETSC_EXTERN PetscErrorCode PCFactorSetDropTolerance(PC,PetscReal,PetscReal,PetscInt); 221 222 PETSC_EXTERN PetscErrorCode PCASMSetLocalSubdomains(PC,PetscInt,IS[],IS[]); 223 PETSC_EXTERN PetscErrorCode PCASMSetTotalSubdomains(PC,PetscInt,IS[],IS[]); 224 PETSC_EXTERN PetscErrorCode PCASMSetOverlap(PC,PetscInt); 225 PETSC_EXTERN PetscErrorCode PCASMSetDMSubdomains(PC,PetscBool); 226 PETSC_EXTERN PetscErrorCode PCASMGetDMSubdomains(PC,PetscBool*); 227 PETSC_EXTERN PetscErrorCode PCASMSetSortIndices(PC,PetscBool ); 228 229 /*E 230 PCASMType - Type of additive Schwarz method to use 231 232 $ PC_ASM_BASIC - Symmetric version where residuals from the ghost points are used 233 $ and computed values in ghost regions are added together. 234 $ Classical standard additive Schwarz. 235 $ PC_ASM_RESTRICT - Residuals from ghost points are used but computed values in ghost 236 $ region are discarded. 237 $ Default. 238 $ PC_ASM_INTERPOLATE - Residuals from ghost points are not used, computed values in ghost 239 $ region are added back in. 240 $ PC_ASM_NONE - Residuals from ghost points are not used, computed ghost values are 241 $ discarded. 242 $ Not very good. 243 244 Level: beginner 245 246 .seealso: PCASMSetType() 247 E*/ 248 typedef enum {PC_ASM_BASIC = 3,PC_ASM_RESTRICT = 1,PC_ASM_INTERPOLATE = 2,PC_ASM_NONE = 0} PCASMType; 249 PETSC_EXTERN const char *const PCASMTypes[]; 250 251 PETSC_EXTERN PetscErrorCode PCASMSetType(PC,PCASMType); 252 PETSC_EXTERN PetscErrorCode PCASMCreateSubdomains(Mat,PetscInt,IS*[]); 253 PETSC_EXTERN PetscErrorCode PCASMDestroySubdomains(PetscInt,IS[],IS[]); 254 PETSC_EXTERN PetscErrorCode PCASMCreateSubdomains2D(PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt*,IS**,IS**); 255 PETSC_EXTERN PetscErrorCode PCASMGetLocalSubdomains(PC,PetscInt*,IS*[],IS*[]); 256 PETSC_EXTERN PetscErrorCode PCASMGetLocalSubmatrices(PC,PetscInt*,Mat*[]); 257 258 /*E 259 PCGASMType - Type of generalized additive Schwarz method to use (differs from ASM in allowing multiple processors per subdomain). 260 261 Each subdomain has nested inner and outer parts. The inner subdomains are assumed to form a non-overlapping covering of the computational 262 domain, while the outer subdomains contain the inner subdomains and overlap with each other. This preconditioner will compute 263 a subdomain correction over each *outer* subdomain from a residual computed there, but its different variants will differ in 264 (a) how the outer subdomain residual is computed, and (b) how the outer subdomain correction is computed. 265 266 $ PC_GASM_BASIC - Symmetric version where the full from the outer subdomain is used, and the resulting correction is applied 267 $ over the outer subdomains. As a result, points in the overlap will receive the sum of the corrections 268 $ from neighboring subdomains. 269 $ Classical standard additive Schwarz. 270 $ PC_GASM_RESTRICT - Residual from the outer subdomain is used but the correction is restricted to the inner subdomain only 271 $ (i.e., zeroed out over the overlap portion of the outer subdomain before being applied). As a result, 272 $ each point will receive a correction only from the unique inner subdomain containing it (nonoverlapping covering 273 $ assumption). 274 $ Default. 275 $ PC_GASM_INTERPOLATE - Residual is zeroed out over the overlap portion of the outer subdomain, but the resulting correction is 276 $ applied over the outer subdomain. As a result, points in the overlap will receive the sum of the corrections 277 $ from neighboring subdomains. 278 $ 279 $ PC_GASM_NONE - Residuals and corrections are zeroed out outside the local subdomains. 280 $ Not very good. 281 282 Level: beginner 283 284 .seealso: PCGASMSetType() 285 E*/ 286 typedef enum {PC_GASM_BASIC = 3,PC_GASM_RESTRICT = 1,PC_GASM_INTERPOLATE = 2,PC_GASM_NONE = 0} PCGASMType; 287 PETSC_EXTERN const char *const PCGASMTypes[]; 288 289 PETSC_EXTERN PetscErrorCode PCGASMSetSubdomains(PC,PetscInt,IS[],IS[]); 290 PETSC_EXTERN PetscErrorCode PCGASMSetTotalSubdomains(PC,PetscInt,PetscBool); 291 PETSC_EXTERN PetscErrorCode PCGASMSetOverlap(PC,PetscInt); 292 PETSC_EXTERN PetscErrorCode PCGASMSetDMSubdomains(PC,PetscBool); 293 PETSC_EXTERN PetscErrorCode PCGASMGetDMSubdomains(PC,PetscBool*); 294 PETSC_EXTERN PetscErrorCode PCGASMSetSortIndices(PC,PetscBool ); 295 296 PETSC_EXTERN PetscErrorCode PCGASMSetType(PC,PCGASMType); 297 PETSC_EXTERN PetscErrorCode PCGASMCreateLocalSubdomains(Mat,PetscInt,PetscInt,IS*[],IS*[]); 298 PETSC_EXTERN PetscErrorCode PCGASMDestroySubdomains(PetscInt,IS[],IS[]); 299 PETSC_EXTERN PetscErrorCode PCGASMCreateSubdomains2D(PC,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt*,IS**,IS**); 300 PETSC_EXTERN PetscErrorCode PCGASMGetSubdomains(PC,PetscInt*,IS*[],IS*[]); 301 PETSC_EXTERN PetscErrorCode PCGASMGetSubmatrices(PC,PetscInt*,Mat*[]); 302 303 /*E 304 PCCompositeType - Determines how two or more preconditioner are composed 305 306 $ PC_COMPOSITE_ADDITIVE - results from application of all preconditioners are added together 307 $ PC_COMPOSITE_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly 308 $ computed after the previous preconditioner application 309 $ PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly 310 $ computed from first preconditioner to last and then back (Use only for symmetric matrices and preconditions) 311 $ PC_COMPOSITE_SPECIAL - This is very special for a matrix of the form alpha I + R + S 312 $ where first preconditioner is built from alpha I + S and second from 313 $ alpha I + R 314 315 Level: beginner 316 317 .seealso: PCCompositeSetType() 318 E*/ 319 typedef enum {PC_COMPOSITE_ADDITIVE,PC_COMPOSITE_MULTIPLICATIVE,PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE,PC_COMPOSITE_SPECIAL,PC_COMPOSITE_SCHUR} PCCompositeType; 320 PETSC_EXTERN const char *const PCCompositeTypes[]; 321 322 PETSC_EXTERN PetscErrorCode PCCompositeSetType(PC,PCCompositeType); 323 PETSC_EXTERN PetscErrorCode PCCompositeAddPC(PC,PCType); 324 PETSC_EXTERN PetscErrorCode PCCompositeGetPC(PC,PetscInt,PC *); 325 PETSC_EXTERN PetscErrorCode PCCompositeSpecialSetAlpha(PC,PetscScalar); 326 327 PETSC_EXTERN PetscErrorCode PCRedundantSetNumber(PC,PetscInt); 328 PETSC_EXTERN PetscErrorCode PCRedundantSetScatter(PC,VecScatter,VecScatter); 329 PETSC_EXTERN PetscErrorCode PCRedundantGetOperators(PC,Mat*,Mat*); 330 331 PETSC_EXTERN PetscErrorCode PCSPAISetEpsilon(PC,double); 332 PETSC_EXTERN PetscErrorCode PCSPAISetNBSteps(PC,PetscInt); 333 PETSC_EXTERN PetscErrorCode PCSPAISetMax(PC,PetscInt); 334 PETSC_EXTERN PetscErrorCode PCSPAISetMaxNew(PC,PetscInt); 335 PETSC_EXTERN PetscErrorCode PCSPAISetBlockSize(PC,PetscInt); 336 PETSC_EXTERN PetscErrorCode PCSPAISetCacheSize(PC,PetscInt); 337 PETSC_EXTERN PetscErrorCode PCSPAISetVerbose(PC,PetscInt); 338 PETSC_EXTERN PetscErrorCode PCSPAISetSp(PC,PetscInt); 339 340 PETSC_EXTERN PetscErrorCode PCHYPRESetType(PC,const char[]); 341 PETSC_EXTERN PetscErrorCode PCHYPREGetType(PC,const char*[]); 342 PETSC_EXTERN PetscErrorCode PCBJacobiGetLocalBlocks(PC,PetscInt*,const PetscInt*[]); 343 PETSC_EXTERN PetscErrorCode PCBJacobiGetTotalBlocks(PC,PetscInt*,const PetscInt*[]); 344 345 PETSC_EXTERN PetscErrorCode PCFieldSplitSetFields(PC,const char[],PetscInt,const PetscInt*,const PetscInt*); 346 PETSC_EXTERN PetscErrorCode PCFieldSplitGetType(PC,PCCompositeType*); 347 PETSC_EXTERN PetscErrorCode PCFieldSplitSetType(PC,PCCompositeType); 348 PETSC_EXTERN PetscErrorCode PCFieldSplitSetBlockSize(PC,PetscInt); 349 PETSC_EXTERN PetscErrorCode PCFieldSplitSetIS(PC,const char[],IS); 350 PETSC_EXTERN PetscErrorCode PCFieldSplitGetIS(PC,const char[],IS*); 351 PETSC_EXTERN PetscErrorCode PCFieldSplitSetDMSplits(PC,PetscBool); 352 PETSC_EXTERN PetscErrorCode PCFieldSplitGetDMSplits(PC,PetscBool*); 353 354 /*E 355 PCFieldSplitSchurPreType - Determines how to precondition Schur complement 356 357 Level: intermediate 358 359 .seealso: PCFieldSplitSchurPrecondition() 360 E*/ 361 typedef enum {PC_FIELDSPLIT_SCHUR_PRE_SELF,PC_FIELDSPLIT_SCHUR_PRE_A11,PC_FIELDSPLIT_SCHUR_PRE_USER} PCFieldSplitSchurPreType; 362 PETSC_EXTERN const char *const PCFieldSplitSchurPreTypes[]; 363 364 /*E 365 PCFieldSplitSchurFactType - determines which off-diagonal parts of the approximate block factorization to use 366 367 Level: intermediate 368 369 .seealso: PCFieldSplitSetSchurFactType() 370 E*/ 371 typedef enum { 372 PC_FIELDSPLIT_SCHUR_FACT_DIAG, 373 PC_FIELDSPLIT_SCHUR_FACT_LOWER, 374 PC_FIELDSPLIT_SCHUR_FACT_UPPER, 375 PC_FIELDSPLIT_SCHUR_FACT_FULL 376 } PCFieldSplitSchurFactType; 377 PETSC_EXTERN const char *const PCFieldSplitSchurFactTypes[]; 378 379 PETSC_EXTERN PetscErrorCode PCFieldSplitSchurPrecondition(PC,PCFieldSplitSchurPreType,Mat); 380 PETSC_EXTERN PetscErrorCode PCFieldSplitSetSchurFactType(PC,PCFieldSplitSchurFactType); 381 PETSC_EXTERN PetscErrorCode PCFieldSplitGetSchurBlocks(PC,Mat*,Mat*,Mat*,Mat*); 382 383 PETSC_EXTERN PetscErrorCode PCGalerkinSetRestriction(PC,Mat); 384 PETSC_EXTERN PetscErrorCode PCGalerkinSetInterpolation(PC,Mat); 385 386 PETSC_EXTERN PetscErrorCode PCSetCoordinates(PC,PetscInt,PetscInt,PetscReal*); 387 PETSC_EXTERN PetscErrorCode PCSASetVectors(PC,PetscInt,PetscReal *); 388 389 PETSC_EXTERN PetscErrorCode PCPythonSetType(PC,const char[]); 390 391 PETSC_EXTERN PetscErrorCode PCSetDM(PC,DM); 392 PETSC_EXTERN PetscErrorCode PCGetDM(PC,DM*); 393 394 PETSC_EXTERN PetscErrorCode PCSetApplicationContext(PC,void*); 395 PETSC_EXTERN PetscErrorCode PCGetApplicationContext(PC,void*); 396 397 PETSC_EXTERN PetscErrorCode PCBiCGStabCUSPSetTolerance(PC,PetscReal); 398 PETSC_EXTERN PetscErrorCode PCBiCGStabCUSPSetIterations(PC,PetscInt); 399 PETSC_EXTERN PetscErrorCode PCBiCGStabCUSPSetUseVerboseMonitor(PC,PetscBool); 400 401 PETSC_EXTERN PetscErrorCode PCAINVCUSPSetDropTolerance(PC,PetscReal); 402 PETSC_EXTERN PetscErrorCode PCAINVCUSPUseScaling(PC,PetscBool); 403 PETSC_EXTERN PetscErrorCode PCAINVCUSPSetNonzeros(PC,PetscInt); 404 PETSC_EXTERN PetscErrorCode PCAINVCUSPSetLinParameter(PC,PetscInt); 405 /*E 406 PCPARMSGlobalType - Determines the global preconditioner method in PARMS 407 408 Level: intermediate 409 410 .seealso: PCPARMSSetGlobal() 411 E*/ 412 typedef enum {PC_PARMS_GLOBAL_RAS,PC_PARMS_GLOBAL_SCHUR,PC_PARMS_GLOBAL_BJ} PCPARMSGlobalType; 413 PETSC_EXTERN const char *const PCPARMSGlobalTypes[]; 414 /*E 415 PCPARMSLocalType - Determines the local preconditioner method in PARMS 416 417 Level: intermediate 418 419 .seealso: PCPARMSSetLocal() 420 E*/ 421 typedef enum {PC_PARMS_LOCAL_ILU0,PC_PARMS_LOCAL_ILUK,PC_PARMS_LOCAL_ILUT,PC_PARMS_LOCAL_ARMS} PCPARMSLocalType; 422 PETSC_EXTERN const char *const PCPARMSLocalTypes[]; 423 424 PETSC_EXTERN PetscErrorCode PCPARMSSetGlobal(PC pc,PCPARMSGlobalType type); 425 PETSC_EXTERN PetscErrorCode PCPARMSSetLocal(PC pc,PCPARMSLocalType type); 426 PETSC_EXTERN PetscErrorCode PCPARMSSetSolveTolerances(PC pc,PetscReal tol,PetscInt maxits); 427 PETSC_EXTERN PetscErrorCode PCPARMSSetSolveRestart(PC pc,PetscInt restart); 428 PETSC_EXTERN PetscErrorCode PCPARMSSetNonsymPerm(PC pc,PetscBool nonsym); 429 PETSC_EXTERN PetscErrorCode PCPARMSSetFill(PC pc,PetscInt lfil0,PetscInt lfil1,PetscInt lfil2); 430 431 PETSC_EXTERN PetscErrorCode PCGAMGSetProcEqLim(PC,PetscInt); 432 PETSC_EXTERN PetscErrorCode PCGAMGSetRepartitioning(PC,PetscBool); 433 PETSC_EXTERN PetscErrorCode PCGAMGSetUseASMAggs(PC,PetscBool); 434 PETSC_EXTERN PetscErrorCode PCGAMGSetSolverType(PC,char[],PetscInt); 435 PETSC_EXTERN PetscErrorCode PCGAMGSetThreshold(PC,PetscReal); 436 PETSC_EXTERN PetscErrorCode PCGAMGSetCoarseEqLim(PC,PetscInt); 437 PETSC_EXTERN PetscErrorCode PCGAMGSetNlevels(PC,PetscInt); 438 typedef const char* PCGAMGType; 439 PETSC_EXTERN PetscErrorCode PCGAMGSetType( PC,PCGAMGType ); 440 PETSC_EXTERN PetscErrorCode PCGAMGSetNSmooths(PC pc, PetscInt n); 441 PETSC_EXTERN PetscErrorCode PCGAMGSetSymGraph(PC pc, PetscBool n); 442 PETSC_EXTERN PetscErrorCode PCGAMGSetSquareGraph(PC,PetscBool); 443 PETSC_EXTERN PetscErrorCode PCGAMGSetReuseProl(PC,PetscBool); 444 445 #if defined(PETSC_HAVE_PCBDDC) 446 /* Enum defining how to treat the coarse problem */ 447 typedef enum {SEQUENTIAL_BDDC,REPLICATED_BDDC,PARALLEL_BDDC,MULTILEVEL_BDDC} CoarseProblemType; 448 PETSC_EXTERN PetscErrorCode PCBDDCSetCoarseningRatio(PC,PetscInt); 449 PETSC_EXTERN PetscErrorCode PCBDDCSetMaxLevels(PC,PetscInt); 450 PETSC_EXTERN PetscErrorCode PCBDDCSetNullSpace(PC,MatNullSpace); 451 PETSC_EXTERN PetscErrorCode PCBDDCSetDirichletBoundaries(PC,IS); 452 PETSC_EXTERN PetscErrorCode PCBDDCGetDirichletBoundaries(PC,IS*); 453 PETSC_EXTERN PetscErrorCode PCBDDCSetNeumannBoundaries(PC,IS); 454 PETSC_EXTERN PetscErrorCode PCBDDCGetNeumannBoundaries(PC,IS*); 455 PETSC_EXTERN PetscErrorCode PCBDDCSetCoarseProblemType(PC,CoarseProblemType); 456 PETSC_EXTERN PetscErrorCode PCBDDCSetDofsSplitting(PC,PetscInt,IS[]); 457 PETSC_EXTERN PetscErrorCode PCBDDCSetLocalAdjacencyGraph(PC,PetscInt,const PetscInt[],const PetscInt[],PetscCopyMode); 458 PETSC_EXTERN PetscErrorCode PCBDDCCreateFETIDPOperators(PC,Mat*,PC*); 459 PETSC_EXTERN PetscErrorCode PCBDDCMatFETIDPGetRHS(Mat,Vec,Vec); 460 PETSC_EXTERN PetscErrorCode PCBDDCMatFETIDPGetSolution(Mat,Vec,Vec); 461 #endif 462 463 PETSC_EXTERN PetscErrorCode PCISSetUseStiffnessScaling(PC,PetscBool); 464 PETSC_EXTERN PetscErrorCode PCISSetSubdomainScalingFactor(PC,PetscScalar); 465 PETSC_EXTERN PetscErrorCode PCISSetSubdomainDiagonalScaling(PC,Vec); 466 467 /*E 468 PCMGType - Determines the type of multigrid method that is run. 469 470 Level: beginner 471 472 Values: 473 + PC_MG_MULTIPLICATIVE (default) - traditional V or W cycle as determined by PCMGSetCycles() 474 . PC_MG_ADDITIVE - the additive multigrid preconditioner where all levels are 475 smoothed before updating the residual. This only uses the 476 down smoother, in the preconditioner the upper smoother is ignored 477 . PC_MG_FULL - same as multiplicative except one also performs grid sequencing, 478 that is starts on the coarsest grid, performs a cycle, interpolates 479 to the next, performs a cycle etc. This is much like the F-cycle presented in "Multigrid" by Trottenberg, Oosterlee, Schuller page 49, but that 480 algorithm supports smoothing on before the restriction on each level in the initial restriction to the coarsest stage. In addition that algorithm 481 calls the V-cycle only on the coarser level and has a post-smoother instead. 482 - PC_MG_KASKADE - like full multigrid except one never goes back to a coarser level 483 from a finer 484 485 .seealso: PCMGSetType() 486 487 E*/ 488 typedef enum { PC_MG_MULTIPLICATIVE,PC_MG_ADDITIVE,PC_MG_FULL,PC_MG_KASKADE } PCMGType; 489 PETSC_EXTERN const char *const PCMGTypes[]; 490 #define PC_MG_CASCADE PC_MG_KASKADE; 491 492 /*E 493 PCMGCycleType - Use V-cycle or W-cycle 494 495 Level: beginner 496 497 Values: 498 + PC_MG_V_CYCLE 499 - PC_MG_W_CYCLE 500 501 .seealso: PCMGSetCycleType() 502 503 E*/ 504 typedef enum { PC_MG_CYCLE_V = 1,PC_MG_CYCLE_W = 2 } PCMGCycleType; 505 PETSC_EXTERN const char *const PCMGCycleTypes[]; 506 507 PETSC_EXTERN PetscErrorCode PCMGSetType(PC,PCMGType); 508 PETSC_EXTERN PetscErrorCode PCMGSetLevels(PC,PetscInt,MPI_Comm*); 509 PETSC_EXTERN PetscErrorCode PCMGGetLevels(PC,PetscInt*); 510 511 PETSC_EXTERN PetscErrorCode PCMGSetNumberSmoothUp(PC,PetscInt); 512 PETSC_EXTERN PetscErrorCode PCMGSetNumberSmoothDown(PC,PetscInt); 513 PETSC_EXTERN PetscErrorCode PCMGSetCycleType(PC,PCMGCycleType); 514 PETSC_EXTERN PetscErrorCode PCMGSetCycleTypeOnLevel(PC,PetscInt,PCMGCycleType); 515 PETSC_EXTERN PetscErrorCode PCMGSetCyclesOnLevel(PC,PetscInt,PetscInt); 516 PETSC_EXTERN PetscErrorCode PCMGMultiplicativeSetCycles(PC,PetscInt); 517 PETSC_EXTERN PetscErrorCode PCMGSetGalerkin(PC,PetscBool); 518 PETSC_EXTERN PetscErrorCode PCMGGetGalerkin(PC,PetscBool*); 519 520 521 PETSC_EXTERN PetscErrorCode PCMGSetRhs(PC,PetscInt,Vec); 522 PETSC_EXTERN PetscErrorCode PCMGSetX(PC,PetscInt,Vec); 523 PETSC_EXTERN PetscErrorCode PCMGSetR(PC,PetscInt,Vec); 524 525 PETSC_EXTERN PetscErrorCode PCMGSetRestriction(PC,PetscInt,Mat); 526 PETSC_EXTERN PetscErrorCode PCMGGetRestriction(PC,PetscInt,Mat*); 527 PETSC_EXTERN PetscErrorCode PCMGSetInterpolation(PC,PetscInt,Mat); 528 PETSC_EXTERN PetscErrorCode PCMGGetInterpolation(PC,PetscInt,Mat*); 529 PETSC_EXTERN PetscErrorCode PCMGSetRScale(PC,PetscInt,Vec); 530 PETSC_EXTERN PetscErrorCode PCMGGetRScale(PC,PetscInt,Vec*); 531 PETSC_EXTERN PetscErrorCode PCMGSetResidual(PC,PetscInt,PetscErrorCode (*)(Mat,Vec,Vec,Vec),Mat); 532 533 /*E 534 PCExoticType - Face based or wirebasket based coarse grid space 535 536 Level: beginner 537 538 .seealso: PCExoticSetType(), PCEXOTIC 539 E*/ 540 typedef enum { PC_EXOTIC_FACE,PC_EXOTIC_WIREBASKET } PCExoticType; 541 PETSC_EXTERN const char *const PCExoticTypes[]; 542 PETSC_EXTERN PetscErrorCode PCExoticSetType(PC,PCExoticType); 543 544 #endif /* __PETSCPC_H */ 545