1 2 /* 3 Defines a ILU factorization preconditioner for any Mat implementation 4 */ 5 #include <../src/ksp/pc/impls/factor/ilu/ilu.h> /*I "petscpc.h" I*/ 6 7 /* ------------------------------------------------------------------------------------------*/ 8 #undef __FUNCT__ 9 #define __FUNCT__ "PCFactorSetReuseFill_ILU" 10 PetscErrorCode PCFactorSetReuseFill_ILU(PC pc,PetscBool flag) 11 { 12 PC_ILU *lu = (PC_ILU*)pc->data; 13 14 PetscFunctionBegin; 15 lu->reusefill = flag; 16 PetscFunctionReturn(0); 17 } 18 19 #undef __FUNCT__ 20 #define __FUNCT__ "PCFactorReorderForNonzeroDiagonal_ILU" 21 PetscErrorCode PCFactorReorderForNonzeroDiagonal_ILU(PC pc,PetscReal z) 22 { 23 PC_ILU *ilu = (PC_ILU*)pc->data; 24 25 PetscFunctionBegin; 26 ilu->nonzerosalongdiagonal = PETSC_TRUE; 27 if (z == PETSC_DECIDE) ilu->nonzerosalongdiagonaltol = 1.e-10; 28 else ilu->nonzerosalongdiagonaltol = z; 29 PetscFunctionReturn(0); 30 } 31 32 #undef __FUNCT__ 33 #define __FUNCT__ "PCReset_ILU" 34 PetscErrorCode PCReset_ILU(PC pc) 35 { 36 PC_ILU *ilu = (PC_ILU*)pc->data; 37 PetscErrorCode ierr; 38 39 PetscFunctionBegin; 40 if (!ilu->inplace) {ierr = MatDestroy(&((PC_Factor*)ilu)->fact);CHKERRQ(ierr);} 41 if (ilu->row && ilu->col && ilu->row != ilu->col) {ierr = ISDestroy(&ilu->row);CHKERRQ(ierr);} 42 ierr = ISDestroy(&ilu->col);CHKERRQ(ierr); 43 PetscFunctionReturn(0); 44 } 45 46 #undef __FUNCT__ 47 #define __FUNCT__ "PCFactorSetDropTolerance_ILU" 48 PetscErrorCode PCFactorSetDropTolerance_ILU(PC pc,PetscReal dt,PetscReal dtcol,PetscInt dtcount) 49 { 50 PC_ILU *ilu = (PC_ILU*)pc->data; 51 52 PetscFunctionBegin; 53 if (pc->setupcalled && (((PC_Factor*)ilu)->info.dt != dt || ((PC_Factor*)ilu)->info.dtcol != dtcol || ((PC_Factor*)ilu)->info.dtcount != dtcount)) { 54 SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Cannot change drop tolerance after using PC"); 55 } 56 ((PC_Factor*)ilu)->info.dt = dt; 57 ((PC_Factor*)ilu)->info.dtcol = dtcol; 58 ((PC_Factor*)ilu)->info.dtcount = dtcount; 59 ((PC_Factor*)ilu)->info.usedt = 1.0; 60 PetscFunctionReturn(0); 61 } 62 63 #undef __FUNCT__ 64 #define __FUNCT__ "PCFactorSetReuseOrdering_ILU" 65 PetscErrorCode PCFactorSetReuseOrdering_ILU(PC pc,PetscBool flag) 66 { 67 PC_ILU *ilu = (PC_ILU*)pc->data; 68 69 PetscFunctionBegin; 70 ilu->reuseordering = flag; 71 PetscFunctionReturn(0); 72 } 73 74 #undef __FUNCT__ 75 #define __FUNCT__ "PCFactorSetUseInPlace_ILU" 76 PetscErrorCode PCFactorSetUseInPlace_ILU(PC pc,PetscBool flg) 77 { 78 PC_ILU *dir = (PC_ILU*)pc->data; 79 80 PetscFunctionBegin; 81 dir->inplace = flg; 82 PetscFunctionReturn(0); 83 } 84 85 #undef __FUNCT__ 86 #define __FUNCT__ "PCFactorGetUseInPlace_ILU" 87 PetscErrorCode PCFactorGetUseInPlace_ILU(PC pc,PetscBool *flg) 88 { 89 PC_ILU *dir = (PC_ILU*)pc->data; 90 91 PetscFunctionBegin; 92 *flg = dir->inplace; 93 PetscFunctionReturn(0); 94 } 95 96 #undef __FUNCT__ 97 #define __FUNCT__ "PCSetFromOptions_ILU" 98 static PetscErrorCode PCSetFromOptions_ILU(PetscOptionItems *PetscOptionsObject,PC pc) 99 { 100 PetscErrorCode ierr; 101 PetscInt itmp; 102 PetscBool flg,set; 103 PC_ILU *ilu = (PC_ILU*)pc->data; 104 PetscReal tol; 105 106 PetscFunctionBegin; 107 ierr = PetscOptionsHead(PetscOptionsObject,"ILU Options");CHKERRQ(ierr); 108 ierr = PCSetFromOptions_Factor(PetscOptionsObject,pc);CHKERRQ(ierr); 109 110 ierr = PetscOptionsInt("-pc_factor_levels","levels of fill","PCFactorSetLevels",(PetscInt)((PC_Factor*)ilu)->info.levels,&itmp,&flg);CHKERRQ(ierr); 111 if (flg) ((PC_Factor*)ilu)->info.levels = itmp; 112 113 ierr = PetscOptionsBool("-pc_factor_diagonal_fill","Allow fill into empty diagonal entry","PCFactorSetAllowDiagonalFill",((PC_Factor*)ilu)->info.diagonal_fill ? PETSC_TRUE : PETSC_FALSE,&flg,&set);CHKERRQ(ierr); 114 if (set) ((PC_Factor*)ilu)->info.diagonal_fill = (PetscReal) flg; 115 ierr = PetscOptionsName("-pc_factor_nonzeros_along_diagonal","Reorder to remove zeros from diagonal","PCFactorReorderForNonzeroDiagonal",&flg);CHKERRQ(ierr); 116 if (flg) { 117 tol = PETSC_DECIDE; 118 ierr = PetscOptionsReal("-pc_factor_nonzeros_along_diagonal","Reorder to remove zeros from diagonal","PCFactorReorderForNonzeroDiagonal",ilu->nonzerosalongdiagonaltol,&tol,0);CHKERRQ(ierr); 119 ierr = PCFactorReorderForNonzeroDiagonal(pc,tol);CHKERRQ(ierr); 120 } 121 122 ierr = PetscOptionsTail();CHKERRQ(ierr); 123 PetscFunctionReturn(0); 124 } 125 126 #undef __FUNCT__ 127 #define __FUNCT__ "PCView_ILU" 128 static PetscErrorCode PCView_ILU(PC pc,PetscViewer viewer) 129 { 130 PC_ILU *ilu = (PC_ILU*)pc->data; 131 PetscErrorCode ierr; 132 PetscBool iascii; 133 134 PetscFunctionBegin; 135 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);CHKERRQ(ierr); 136 if (iascii) { 137 if (ilu->inplace) { 138 ierr = PetscViewerASCIIPrintf(viewer," ILU: in-place factorization\n");CHKERRQ(ierr); 139 } else { 140 ierr = PetscViewerASCIIPrintf(viewer," ILU: out-of-place factorization\n");CHKERRQ(ierr); 141 } 142 143 if (ilu->reusefill) {ierr = PetscViewerASCIIPrintf(viewer," ILU: Reusing fill from past factorization\n");CHKERRQ(ierr);} 144 if (ilu->reuseordering) {ierr = PetscViewerASCIIPrintf(viewer," ILU: Reusing reordering from past factorization\n");CHKERRQ(ierr);} 145 } 146 ierr = PCView_Factor(pc,viewer);CHKERRQ(ierr); 147 PetscFunctionReturn(0); 148 } 149 150 #undef __FUNCT__ 151 #define __FUNCT__ "PCSetUp_ILU" 152 static PetscErrorCode PCSetUp_ILU(PC pc) 153 { 154 PetscErrorCode ierr; 155 PC_ILU *ilu = (PC_ILU*)pc->data; 156 MatInfo info; 157 PetscBool flg; 158 159 PetscFunctionBegin; 160 /* ugly hack to change default, since it is not support by some matrix types */ 161 if (((PC_Factor*)ilu)->info.shifttype == (PetscReal)MAT_SHIFT_NONZERO) { 162 ierr = PetscObjectTypeCompare((PetscObject)pc->pmat,MATSEQAIJ,&flg);CHKERRQ(ierr); 163 if (!flg) { 164 ierr = PetscObjectTypeCompare((PetscObject)pc->pmat,MATMPIAIJ,&flg);CHKERRQ(ierr); 165 if (!flg) { 166 ((PC_Factor*)ilu)->info.shifttype = (PetscReal)MAT_SHIFT_INBLOCKS; 167 PetscInfo(pc,"Changing shift type from NONZERO to INBLOCKS because block matrices do not support NONZERO\n");CHKERRQ(ierr); 168 } 169 } 170 } 171 172 ierr = MatSetErrorIfFailure(pc->pmat,pc->erroriffailure);CHKERRQ(ierr); 173 if (ilu->inplace) { 174 if (!pc->setupcalled) { 175 176 /* In-place factorization only makes sense with the natural ordering, 177 so we only need to get the ordering once, even if nonzero structure changes */ 178 ierr = MatGetOrdering(pc->pmat,((PC_Factor*)ilu)->ordering,&ilu->row,&ilu->col);CHKERRQ(ierr); 179 if (ilu->row) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->row);CHKERRQ(ierr);} 180 if (ilu->col) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->col);CHKERRQ(ierr);} 181 } 182 183 /* In place ILU only makes sense with fill factor of 1.0 because 184 cannot have levels of fill */ 185 ((PC_Factor*)ilu)->info.fill = 1.0; 186 ((PC_Factor*)ilu)->info.diagonal_fill = 0.0; 187 188 ierr = MatILUFactor(pc->pmat,ilu->row,ilu->col,&((PC_Factor*)ilu)->info);CHKERRQ(ierr);CHKERRQ(ierr); 189 if (pc->pmat->errortype) { /* Factor() fails */ 190 pc->failedreason = (PCFailedReason)pc->pmat->errortype; 191 PetscFunctionReturn(0); 192 } 193 194 ((PC_Factor*)ilu)->fact = pc->pmat; 195 /* must update the pc record of the matrix state or the PC will attempt to run PCSetUp() yet again */ 196 ierr = PetscObjectStateGet((PetscObject)pc->pmat,&pc->matstate);CHKERRQ(ierr); 197 } else { 198 Mat F; 199 if (!pc->setupcalled) { 200 /* first time in so compute reordering and symbolic factorization */ 201 ierr = MatGetOrdering(pc->pmat,((PC_Factor*)ilu)->ordering,&ilu->row,&ilu->col);CHKERRQ(ierr); 202 if (ilu->row) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->row);CHKERRQ(ierr);} 203 if (ilu->col) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->col);CHKERRQ(ierr);} 204 /* Remove zeros along diagonal? */ 205 if (ilu->nonzerosalongdiagonal) { 206 ierr = MatReorderForNonzeroDiagonal(pc->pmat,ilu->nonzerosalongdiagonaltol,ilu->row,ilu->col);CHKERRQ(ierr); 207 } 208 if (!((PC_Factor*)ilu)->fact) { 209 ierr = MatGetFactor(pc->pmat,((PC_Factor*)ilu)->solvertype,MAT_FACTOR_ILU,&((PC_Factor*)ilu)->fact);CHKERRQ(ierr); 210 } 211 ierr = MatILUFactorSymbolic(((PC_Factor*)ilu)->fact,pc->pmat,ilu->row,ilu->col,&((PC_Factor*)ilu)->info);CHKERRQ(ierr); 212 ierr = MatGetInfo(((PC_Factor*)ilu)->fact,MAT_LOCAL,&info);CHKERRQ(ierr); 213 214 ilu->actualfill = info.fill_ratio_needed; 215 216 ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)((PC_Factor*)ilu)->fact);CHKERRQ(ierr); 217 } else if (pc->flag != SAME_NONZERO_PATTERN) { 218 if (!ilu->reuseordering) { 219 /* compute a new ordering for the ILU */ 220 ierr = ISDestroy(&ilu->row);CHKERRQ(ierr); 221 ierr = ISDestroy(&ilu->col);CHKERRQ(ierr); 222 ierr = MatGetOrdering(pc->pmat,((PC_Factor*)ilu)->ordering,&ilu->row,&ilu->col);CHKERRQ(ierr); 223 if (ilu->row) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->row);CHKERRQ(ierr);} 224 if (ilu->col) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->col);CHKERRQ(ierr);} 225 /* Remove zeros along diagonal? */ 226 if (ilu->nonzerosalongdiagonal) { 227 ierr = MatReorderForNonzeroDiagonal(pc->pmat,ilu->nonzerosalongdiagonaltol,ilu->row,ilu->col);CHKERRQ(ierr); 228 } 229 } 230 ierr = MatDestroy(&((PC_Factor*)ilu)->fact);CHKERRQ(ierr); 231 ierr = MatGetFactor(pc->pmat,((PC_Factor*)ilu)->solvertype,MAT_FACTOR_ILU,&((PC_Factor*)ilu)->fact);CHKERRQ(ierr); 232 ierr = MatILUFactorSymbolic(((PC_Factor*)ilu)->fact,pc->pmat,ilu->row,ilu->col,&((PC_Factor*)ilu)->info);CHKERRQ(ierr); 233 ierr = MatGetInfo(((PC_Factor*)ilu)->fact,MAT_LOCAL,&info);CHKERRQ(ierr); 234 235 ilu->actualfill = info.fill_ratio_needed; 236 237 ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)((PC_Factor*)ilu)->fact);CHKERRQ(ierr); 238 } 239 F = ((PC_Factor*)ilu)->fact; 240 if (F->errortype) { /* FactorSymbolic() fails */ 241 pc->failedreason = (PCFailedReason)F->errortype; 242 PetscFunctionReturn(0); 243 } 244 245 ierr = MatLUFactorNumeric(((PC_Factor*)ilu)->fact,pc->pmat,&((PC_Factor*)ilu)->info);CHKERRQ(ierr); 246 if (F->errortype) { /* FactorNumeric() fails */ 247 pc->failedreason = (PCFailedReason)F->errortype; 248 } 249 } 250 PetscFunctionReturn(0); 251 } 252 253 #undef __FUNCT__ 254 #define __FUNCT__ "PCDestroy_ILU" 255 static PetscErrorCode PCDestroy_ILU(PC pc) 256 { 257 PC_ILU *ilu = (PC_ILU*)pc->data; 258 PetscErrorCode ierr; 259 260 PetscFunctionBegin; 261 ierr = PCReset_ILU(pc);CHKERRQ(ierr); 262 ierr = PetscFree(((PC_Factor*)ilu)->solvertype);CHKERRQ(ierr); 263 ierr = PetscFree(((PC_Factor*)ilu)->ordering);CHKERRQ(ierr); 264 ierr = PetscFree(pc->data);CHKERRQ(ierr); 265 PetscFunctionReturn(0); 266 } 267 268 #undef __FUNCT__ 269 #define __FUNCT__ "PCApply_ILU" 270 static PetscErrorCode PCApply_ILU(PC pc,Vec x,Vec y) 271 { 272 PC_ILU *ilu = (PC_ILU*)pc->data; 273 PetscErrorCode ierr; 274 275 PetscFunctionBegin; 276 ierr = MatSolve(((PC_Factor*)ilu)->fact,x,y);CHKERRQ(ierr); 277 PetscFunctionReturn(0); 278 } 279 280 #undef __FUNCT__ 281 #define __FUNCT__ "PCApplyTranspose_ILU" 282 static PetscErrorCode PCApplyTranspose_ILU(PC pc,Vec x,Vec y) 283 { 284 PC_ILU *ilu = (PC_ILU*)pc->data; 285 PetscErrorCode ierr; 286 287 PetscFunctionBegin; 288 ierr = MatSolveTranspose(((PC_Factor*)ilu)->fact,x,y);CHKERRQ(ierr); 289 PetscFunctionReturn(0); 290 } 291 292 #undef __FUNCT__ 293 #define __FUNCT__ "PCApplySymmetricLeft_ILU" 294 static PetscErrorCode PCApplySymmetricLeft_ILU(PC pc,Vec x,Vec y) 295 { 296 PetscErrorCode ierr; 297 PC_ILU *icc = (PC_ILU*)pc->data; 298 299 PetscFunctionBegin; 300 ierr = MatForwardSolve(((PC_Factor*)icc)->fact,x,y);CHKERRQ(ierr); 301 PetscFunctionReturn(0); 302 } 303 304 #undef __FUNCT__ 305 #define __FUNCT__ "PCApplySymmetricRight_ILU" 306 static PetscErrorCode PCApplySymmetricRight_ILU(PC pc,Vec x,Vec y) 307 { 308 PetscErrorCode ierr; 309 PC_ILU *icc = (PC_ILU*)pc->data; 310 311 PetscFunctionBegin; 312 ierr = MatBackwardSolve(((PC_Factor*)icc)->fact,x,y);CHKERRQ(ierr); 313 PetscFunctionReturn(0); 314 } 315 316 /*MC 317 PCILU - Incomplete factorization preconditioners. 318 319 Options Database Keys: 320 + -pc_factor_levels <k> - number of levels of fill for ILU(k) 321 . -pc_factor_in_place - only for ILU(0) with natural ordering, reuses the space of the matrix for 322 its factorization (overwrites original matrix) 323 . -pc_factor_diagonal_fill - fill in a zero diagonal even if levels of fill indicate it wouldn't be fill 324 . -pc_factor_reuse_ordering - reuse ordering of factorized matrix from previous factorization 325 . -pc_factor_fill <nfill> - expected amount of fill in factored matrix compared to original matrix, nfill > 1 326 . -pc_factor_nonzeros_along_diagonal - reorder the matrix before factorization to remove zeros from the diagonal, 327 this decreases the chance of getting a zero pivot 328 . -pc_factor_mat_ordering_type <natural,nd,1wd,rcm,qmd> - set the row/column ordering of the factored matrix 329 - -pc_factor_pivot_in_blocks - for block ILU(k) factorization, i.e. with BAIJ matrices with block size larger 330 than 1 the diagonal blocks are factored with partial pivoting (this increases the 331 stability of the ILU factorization 332 333 Level: beginner 334 335 Concepts: incomplete factorization 336 337 Notes: Only implemented for some matrix formats. (for parallel see PCHYPRE for hypre's ILU) 338 339 For BAIJ matrices this implements a point block ILU 340 341 The "symmetric" application of this preconditioner is not actually symmetric since L is not transpose(U) 342 even when the matrix is not symmetric since the U stores the diagonals of the factorization. 343 344 If you are using MATSEQAIJCUSPARSE matrices (or MATMPIAIJCUSPARESE matrices with block Jacobi), factorization 345 is never done on the GPU). 346 347 References: 348 + 1. - T. Dupont, R. Kendall, and H. Rachford. An approximate factorization procedure for solving 349 self adjoint elliptic difference equations. SIAM J. Numer. Anal., 5, 1968. 350 . 2. - T.A. Oliphant. An implicit numerical method for solving two dimensional timedependent diffusion problems. Quart. Appl. Math., 19, 1961. 351 - 3. - TONY F. CHAN AND HENK A. VAN DER VORST, APPROXIMATE AND INCOMPLETE FACTORIZATIONS, 352 Chapter in Parallel Numerical 353 Algorithms, edited by D. Keyes, A. Semah, V. Venkatakrishnan, ICASE/LaRC Interdisciplinary Series in 354 Science and Engineering, Kluwer. 355 356 357 .seealso: PCCreate(), PCSetType(), PCType (for list of available types), PC, PCSOR, MatOrderingType, 358 PCFactorSetZeroPivot(), PCFactorSetShiftSetType(), PCFactorSetAmount(), 359 PCFactorSetDropTolerance(),PCFactorSetFill(), PCFactorSetMatOrderingType(), PCFactorSetReuseOrdering(), 360 PCFactorSetLevels(), PCFactorSetUseInPlace(), PCFactorSetAllowDiagonalFill(), PCFactorSetPivotInBlocks(), 361 PCFactorGetAllowDiagonalFill(), PCFactorGetUseInPlace() 362 363 M*/ 364 365 #undef __FUNCT__ 366 #define __FUNCT__ "PCCreate_ILU" 367 PETSC_EXTERN PetscErrorCode PCCreate_ILU(PC pc) 368 { 369 PetscErrorCode ierr; 370 PC_ILU *ilu; 371 372 PetscFunctionBegin; 373 ierr = PetscNewLog(pc,&ilu);CHKERRQ(ierr); 374 375 ((PC_Factor*)ilu)->fact = 0; 376 ierr = MatFactorInfoInitialize(&((PC_Factor*)ilu)->info);CHKERRQ(ierr); 377 ((PC_Factor*)ilu)->factortype = MAT_FACTOR_ILU; 378 ((PC_Factor*)ilu)->info.levels = 0.; 379 ((PC_Factor*)ilu)->info.fill = 1.0; 380 ilu->col = 0; 381 ilu->row = 0; 382 ilu->inplace = PETSC_FALSE; 383 ierr = PetscStrallocpy(MATORDERINGNATURAL,(char**)&((PC_Factor*)ilu)->ordering);CHKERRQ(ierr); 384 ilu->reuseordering = PETSC_FALSE; 385 ((PC_Factor*)ilu)->info.dt = PETSC_DEFAULT; 386 ((PC_Factor*)ilu)->info.dtcount = PETSC_DEFAULT; 387 ((PC_Factor*)ilu)->info.dtcol = PETSC_DEFAULT; 388 ((PC_Factor*)ilu)->info.shifttype = (PetscReal)MAT_SHIFT_NONE; 389 ((PC_Factor*)ilu)->info.shiftamount = 100.0*PETSC_MACHINE_EPSILON; 390 ((PC_Factor*)ilu)->info.zeropivot = 100.0*PETSC_MACHINE_EPSILON; 391 ((PC_Factor*)ilu)->info.pivotinblocks = 1.0; 392 ilu->reusefill = PETSC_FALSE; 393 ((PC_Factor*)ilu)->info.diagonal_fill = 0.0; 394 pc->data = (void*)ilu; 395 396 pc->ops->reset = PCReset_ILU; 397 pc->ops->destroy = PCDestroy_ILU; 398 pc->ops->apply = PCApply_ILU; 399 pc->ops->applytranspose = PCApplyTranspose_ILU; 400 pc->ops->setup = PCSetUp_ILU; 401 pc->ops->setfromoptions = PCSetFromOptions_ILU; 402 pc->ops->getfactoredmatrix = PCFactorGetMatrix_Factor; 403 pc->ops->view = PCView_ILU; 404 pc->ops->applysymmetricleft = PCApplySymmetricLeft_ILU; 405 pc->ops->applysymmetricright = PCApplySymmetricRight_ILU; 406 pc->ops->applyrichardson = 0; 407 408 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetZeroPivot_C",PCFactorSetZeroPivot_Factor);CHKERRQ(ierr); 409 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetShiftType_C",PCFactorSetShiftType_Factor);CHKERRQ(ierr); 410 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetShiftAmount_C",PCFactorSetShiftAmount_Factor);CHKERRQ(ierr); 411 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorGetMatSolverPackage_C",PCFactorGetMatSolverPackage_Factor);CHKERRQ(ierr); 412 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetMatSolverPackage_C",PCFactorSetMatSolverPackage_Factor);CHKERRQ(ierr); 413 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetUpMatSolverPackage_C",PCFactorSetUpMatSolverPackage_Factor);CHKERRQ(ierr); 414 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetDropTolerance_C",PCFactorSetDropTolerance_ILU);CHKERRQ(ierr); 415 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetFill_C",PCFactorSetFill_Factor);CHKERRQ(ierr); 416 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetMatOrderingType_C",PCFactorSetMatOrderingType_Factor);CHKERRQ(ierr); 417 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetReuseOrdering_C",PCFactorSetReuseOrdering_ILU);CHKERRQ(ierr); 418 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetReuseFill_C",PCFactorSetReuseFill_ILU);CHKERRQ(ierr); 419 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetLevels_C",PCFactorSetLevels_Factor);CHKERRQ(ierr); 420 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorGetLevels_C",PCFactorGetLevels_Factor);CHKERRQ(ierr); 421 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetUseInPlace_C",PCFactorSetUseInPlace_ILU);CHKERRQ(ierr); 422 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorGetUseInPlace_C",PCFactorGetUseInPlace_ILU);CHKERRQ(ierr); 423 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetAllowDiagonalFill_C",PCFactorSetAllowDiagonalFill_Factor);CHKERRQ(ierr); 424 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorGetAllowDiagonalFill_C",PCFactorGetAllowDiagonalFill_Factor);CHKERRQ(ierr); 425 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetPivotInBlocks_C",PCFactorSetPivotInBlocks_Factor);CHKERRQ(ierr); 426 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCFactorReorderForNonzeroDiagonal_C",PCFactorReorderForNonzeroDiagonal_ILU);CHKERRQ(ierr); 427 PetscFunctionReturn(0); 428 } 429