1 /* $Id: petscpc.h,v 1.122 2001/08/21 21:03:12 bsmith Exp $ */ 2 3 /* 4 Preconditioner module. 5 */ 6 #if !defined(__PETSCPC_H) 7 #define __PETSCPC_H 8 #include "petscmat.h" 9 10 /* 11 PCList contains the list of preconditioners currently registered 12 These are added with the PCRegisterDynamic() macro 13 */ 14 extern PetscFList PCList; 15 typedef char *PCType; 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 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 .seealso: PCSetType(), PC 36 E*/ 37 #define PCNONE "none" 38 #define PCJACOBI "jacobi" 39 #define PCSOR "sor" 40 #define PCLU "lu" 41 #define PCSHELL "shell" 42 #define PCBJACOBI "bjacobi" 43 #define PCMG "mg" 44 #define PCEISENSTAT "eisenstat" 45 #define PCILU "ilu" 46 #define PCICC "icc" 47 #define PCASM "asm" 48 #define PCSLES "sles" 49 #define PCCOMPOSITE "composite" 50 #define PCREDUNDANT "redundant" 51 #define PCSPAI "spai" 52 #define PCMILU "milu" 53 #define PCNN "nn" 54 #define PCCHOLESKY "cholesky" 55 #define PCRAMG "ramg" 56 #define PCPBJACOBI "pbjacobi" 57 #define PCMULTILEVEL "multilevel" 58 #define PCSCHUR "schur" 59 #define PCESI "esi" 60 #define PCPETSCESI "petscesi" 61 #define PCMAT "mat" 62 #define PCHYPRE "hypre" 63 64 /* Logging support */ 65 extern int PC_COOKIE; 66 extern int PC_SetUp, PC_SetUpOnBlocks, PC_Apply, PC_ApplyCoarse, PC_ApplyMultiple, PC_ApplySymmetricLeft; 67 extern int PC_ApplySymmetricRight, PC_ModifySubMatrices; 68 69 /*E 70 PCSide - If the preconditioner is to be applied to the left, right 71 or symmetrically around the operator. 72 73 Level: beginner 74 75 .seealso: 76 E*/ 77 typedef enum { PC_LEFT,PC_RIGHT,PC_SYMMETRIC } PCSide; 78 79 EXTERN int PCCreate(MPI_Comm,PC*); 80 EXTERN int PCSetType(PC,PCType); 81 EXTERN int PCSetUp(PC); 82 EXTERN int PCSetUpOnBlocks(PC); 83 EXTERN int PCApply(PC,Vec,Vec); 84 EXTERN int PCApplySymmetricLeft(PC,Vec,Vec); 85 EXTERN int PCApplySymmetricRight(PC,Vec,Vec); 86 EXTERN int PCApplyBAorAB(PC,PCSide,Vec,Vec,Vec); 87 EXTERN int PCApplyTranspose(PC,Vec,Vec); 88 EXTERN int PCApplyBAorABTranspose(PC,PCSide,Vec,Vec,Vec); 89 EXTERN int PCApplyRichardson(PC,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,int); 90 EXTERN int PCApplyRichardsonExists(PC,PetscTruth*); 91 92 EXTERN int PCRegisterDestroy(void); 93 EXTERN int PCRegisterAll(char*); 94 extern PetscTruth PCRegisterAllCalled; 95 96 EXTERN int PCRegister(char*,char*,char*,int(*)(PC)); 97 #if defined(PETSC_USE_DYNAMIC_LIBRARIES) 98 #define PCRegisterDynamic(a,b,c,d) PCRegister(a,b,c,0) 99 #else 100 #define PCRegisterDynamic(a,b,c,d) PCRegister(a,b,c,d) 101 #endif 102 103 EXTERN int PCDestroy(PC); 104 EXTERN int PCSetFromOptions(PC); 105 EXTERN int PCGetType(PC,PCType*); 106 107 EXTERN int PCGetFactoredMatrix(PC,Mat*); 108 EXTERN int PCSetModifySubMatrices(PC,int(*)(PC,int,IS*,IS*,Mat*,void*),void*); 109 EXTERN int PCModifySubMatrices(PC,int,IS*,IS*,Mat*,void*); 110 111 EXTERN int PCSetOperators(PC,Mat,Mat,MatStructure); 112 EXTERN int PCGetOperators(PC,Mat*,Mat*,MatStructure*); 113 114 EXTERN int PCSetVector(PC,Vec); 115 EXTERN int PCGetVector(PC,Vec*); 116 EXTERN int PCView(PC,PetscViewer); 117 118 EXTERN int PCSetOptionsPrefix(PC,char*); 119 EXTERN int PCAppendOptionsPrefix(PC,char*); 120 EXTERN int PCGetOptionsPrefix(PC,char**); 121 122 EXTERN int PCNullSpaceAttach(PC,MatNullSpace); 123 124 EXTERN int PCComputeExplicitOperator(PC,Mat*); 125 126 /* 127 These are used to provide extra scaling of preconditioned 128 operator for time-stepping schemes like in PVODE 129 */ 130 EXTERN int PCDiagonalScale(PC,PetscTruth*); 131 EXTERN int PCDiagonalScaleLeft(PC,Vec,Vec); 132 EXTERN int PCDiagonalScaleRight(PC,Vec,Vec); 133 EXTERN int PCDiagonalScaleSet(PC,Vec); 134 135 /* ------------- options specific to particular preconditioners --------- */ 136 137 EXTERN int PCJacobiSetUseRowMax(PC); 138 EXTERN int PCSORSetSymmetric(PC,MatSORType); 139 EXTERN int PCSORSetOmega(PC,PetscReal); 140 EXTERN int PCSORSetIterations(PC,int,int); 141 142 EXTERN int PCEisenstatSetOmega(PC,PetscReal); 143 EXTERN int PCEisenstatNoDiagonalScaling(PC); 144 145 #define USE_PRECONDITIONER_MATRIX 0 146 #define USE_TRUE_MATRIX 1 147 EXTERN int PCBJacobiSetUseTrueLocal(PC); 148 EXTERN int PCBJacobiSetTotalBlocks(PC,int,int*); 149 EXTERN int PCBJacobiSetLocalBlocks(PC,int,int*); 150 151 EXTERN int PCSLESSetUseTrue(PC); 152 153 EXTERN int PCShellSetApply(PC,int (*)(void*,Vec,Vec),void*); 154 EXTERN int PCShellSetSetUp(PC,int (*)(void*)); 155 EXTERN int PCShellSetApplyRichardson(PC,int (*)(void*,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal,int),void*); 156 EXTERN int PCShellSetView(PC,int (*)(void*,PetscViewer)); 157 EXTERN int PCShellSetName(PC,char*); 158 EXTERN int PCShellGetName(PC,char**); 159 160 EXTERN int PCLUSetMatOrdering(PC,MatOrderingType); 161 EXTERN int PCLUSetReuseOrdering(PC,PetscTruth); 162 EXTERN int PCLUSetReuseFill(PC,PetscTruth); 163 EXTERN int PCLUSetUseInPlace(PC); 164 EXTERN int PCLUSetFill(PC,PetscReal); 165 EXTERN int PCLUSetDamping(PC,PetscReal); 166 EXTERN int PCLUSetPivoting(PC,PetscReal); 167 168 EXTERN int PCCholeskySetMatOrdering(PC,MatOrderingType); 169 EXTERN int PCCholeskySetReuseOrdering(PC,PetscTruth); 170 EXTERN int PCCholeskySetReuseFill(PC,PetscTruth); 171 EXTERN int PCCholeskySetUseInPlace(PC); 172 EXTERN int PCCholeskySetFill(PC,PetscReal); 173 EXTERN int PCCholeskySetDamping(PC,PetscReal); 174 175 EXTERN int PCILUSetMatOrdering(PC,MatOrderingType); 176 EXTERN int PCILUSetUseInPlace(PC); 177 EXTERN int PCILUSetFill(PC,PetscReal); 178 EXTERN int PCILUSetLevels(PC,int); 179 EXTERN int PCILUSetReuseOrdering(PC,PetscTruth); 180 EXTERN int PCILUSetUseDropTolerance(PC,PetscReal,PetscReal,int); 181 EXTERN int PCILUDTSetReuseFill(PC,PetscTruth); 182 EXTERN int PCILUSetAllowDiagonalFill(PC); 183 EXTERN int PCILUSetDamping(PC,PetscReal); 184 EXTERN int PCILUSetSinglePrecisionSolves(PC,PetscTruth); 185 186 EXTERN int PCICCSetMatOrdering(PC,MatOrderingType); 187 EXTERN int PCICCSetFill(PC,PetscReal); 188 EXTERN int PCICCSetLevels(PC,int); 189 190 EXTERN int PCASMSetLocalSubdomains(PC,int,IS *); 191 EXTERN int PCASMSetTotalSubdomains(PC,int,IS *); 192 EXTERN int PCASMSetOverlap(PC,int); 193 /*E 194 PCASMType - Type of additive Schwarz method to use 195 196 $ PC_ASM_BASIC - symmetric version where residuals from the ghost points are used 197 $ and computed values in ghost regions are added together. Classical 198 $ standard additive Schwarz 199 $ PC_ASM_RESTRICT - residuals from ghost points are used but computed values in ghost 200 $ region are discarded. Default 201 $ PC_ASM_INTERPOLATE - residuals from ghost points are not used, computed values in ghost 202 $ region are added back in 203 $ PC_ASM_NONE - ghost point residuals are not used, computed ghost values are discarded 204 $ not very good. 205 206 Level: beginner 207 208 .seealso: PCASMSetType() 209 E*/ 210 typedef enum {PC_ASM_BASIC = 3,PC_ASM_RESTRICT = 1,PC_ASM_INTERPOLATE = 2,PC_ASM_NONE = 0} PCASMType; 211 EXTERN int PCASMSetType(PC,PCASMType); 212 EXTERN int PCASMCreateSubdomains2D(int,int,int,int,int,int,int *,IS **); 213 EXTERN int PCASMSetUseInPlace(PC); 214 EXTERN int PCASMGetLocalSubdomains(PC,int*,IS**); 215 EXTERN int PCASMGetLocalSubmatrices(PC,int*,Mat**); 216 217 /*E 218 PCCompositeType - Determines how two or more preconditioner are composed 219 220 $ PC_COMPOSITE_ADDITIVE - results from application of all preconditioners are added together 221 $ PC_COMPOSITE_MULTIPLICATIVE - preconditioners are applied sequentially to the residual freshly 222 $ computed after the previous preconditioner application 223 $ PC_COMPOSITE_SPECIAL - This is very special for a matrix of the form alpha I + R + S 224 $ where first preconditioner is built from alpha I + S and second from 225 $ alpha I + R 226 227 Level: beginner 228 229 .seealso: PCCompositeSetType() 230 E*/ 231 typedef enum {PC_COMPOSITE_ADDITIVE,PC_COMPOSITE_MULTIPLICATIVE,PC_COMPOSITE_SPECIAL} PCCompositeType; 232 EXTERN int PCCompositeSetUseTrue(PC); 233 EXTERN int PCCompositeSetType(PC,PCCompositeType); 234 EXTERN int PCCompositeAddPC(PC,PCType); 235 EXTERN int PCCompositeGetPC(PC pc,int n,PC *); 236 EXTERN int PCCompositeSpecialSetAlpha(PC,PetscScalar); 237 238 EXTERN int PCRedundantSetScatter(PC,VecScatter,VecScatter); 239 EXTERN int PCRedundantGetOperators(PC,Mat*,Mat*); 240 EXTERN int PCRedundantGetPC(PC,PC*); 241 EXTERN int MatGetOrderingList(PetscFList *list); 242 243 EXTERN int PCMultiLevelSetFields(PC, int, int); 244 EXTERN int PCMultiLevelSetNonlinearIterate(PC, Vec); 245 EXTERN int PCMultiLevelSetGradientOperator(PC, int, int, PetscScalar); 246 EXTERN int PCMultiLevelApplyGradient(PC, Vec, Vec); 247 EXTERN int PCMultiLevelApplyGradientTrans(PC, Vec, Vec); 248 EXTERN int PCMultiLevelBuildSolution(PC, Vec); 249 EXTERN int PCMultiLevelGetMultiplier(PC, Vec, Vec); 250 251 EXTERN int PCSchurSetGradientOperator(PC, int, int); 252 EXTERN int PCSchurGetIterationNumber(PC, int *, int *); 253 254 #endif /* __PETSCPC_H */ 255