PETSC_EXTERN void PETSC_STDCALL matseterroriffailure_(Mat mat,PetscBool *flg, int *__ierr ){
*__ierr = MatSetErrorIfFailure(
(Mat)PetscToPointer((mat) ),*flg);
}
static PetscErrorCode PCSetUp_ILU(PC pc)
{
PetscErrorCode ierr;
PC_ILU *ilu = (PC_ILU*)pc->data;
MatInfo info;
PetscBool flg;
const MatSolverPackage stype;
MatFactorError err;
PetscFunctionBegin;
pc->failedreason = PC_NOERROR;
/* ugly hack to change default, since it is not support by some matrix types */
if (((PC_Factor*)ilu)->info.shifttype == (PetscReal)MAT_SHIFT_NONZERO) {
ierr = PetscObjectTypeCompare((PetscObject)pc->pmat,MATSEQAIJ,&flg);CHKERRQ(ierr);
if (!flg) {
ierr = PetscObjectTypeCompare((PetscObject)pc->pmat,MATMPIAIJ,&flg);CHKERRQ(ierr);
if (!flg) {
((PC_Factor*)ilu)->info.shifttype = (PetscReal)MAT_SHIFT_INBLOCKS;
PetscInfo(pc,"Changing shift type from NONZERO to INBLOCKS because block matrices do not support NONZERO\n");CHKERRQ(ierr);
}
}
}
ierr = MatSetErrorIfFailure(pc->pmat,pc->erroriffailure);CHKERRQ(ierr);
if (ilu->hdr.inplace) {
if (!pc->setupcalled) {
/* In-place factorization only makes sense with the natural ordering,
so we only need to get the ordering once, even if nonzero structure changes */
ierr = MatGetOrdering(pc->pmat,((PC_Factor*)ilu)->ordering,&ilu->row,&ilu->col);CHKERRQ(ierr);
if (ilu->row) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->row);CHKERRQ(ierr);}
if (ilu->col) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->col);CHKERRQ(ierr);}
}
/* In place ILU only makes sense with fill factor of 1.0 because
cannot have levels of fill */
((PC_Factor*)ilu)->info.fill = 1.0;
((PC_Factor*)ilu)->info.diagonal_fill = 0.0;
ierr = MatILUFactor(pc->pmat,ilu->row,ilu->col,&((PC_Factor*)ilu)->info);CHKERRQ(ierr);CHKERRQ(ierr);
ierr = MatFactorGetError(pc->pmat,&err);CHKERRQ(ierr);
if (err) { /* Factor() fails */
pc->failedreason = (PCFailedReason)err;
PetscFunctionReturn(0);
}
((PC_Factor*)ilu)->fact = pc->pmat;
/* must update the pc record of the matrix state or the PC will attempt to run PCSetUp() yet again */
ierr = PetscObjectStateGet((PetscObject)pc->pmat,&pc->matstate);CHKERRQ(ierr);
} else {
if (!pc->setupcalled) {
/* first time in so compute reordering and symbolic factorization */
ierr = MatGetOrdering(pc->pmat,((PC_Factor*)ilu)->ordering,&ilu->row,&ilu->col);CHKERRQ(ierr);
if (ilu->row) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->row);CHKERRQ(ierr);}
if (ilu->col) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->col);CHKERRQ(ierr);}
/* Remove zeros along diagonal? */
if (ilu->nonzerosalongdiagonal) {
ierr = MatReorderForNonzeroDiagonal(pc->pmat,ilu->nonzerosalongdiagonaltol,ilu->row,ilu->col);CHKERRQ(ierr);
}
if (!((PC_Factor*)ilu)->fact) {
ierr = MatGetFactor(pc->pmat,((PC_Factor*)ilu)->solvertype,MAT_FACTOR_ILU,&((PC_Factor*)ilu)->fact);CHKERRQ(ierr);
}
ierr = MatILUFactorSymbolic(((PC_Factor*)ilu)->fact,pc->pmat,ilu->row,ilu->col,&((PC_Factor*)ilu)->info);CHKERRQ(ierr);
ierr = MatGetInfo(((PC_Factor*)ilu)->fact,MAT_LOCAL,&info);CHKERRQ(ierr);
ilu->hdr.actualfill = info.fill_ratio_needed;
ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)((PC_Factor*)ilu)->fact);CHKERRQ(ierr);
} else if (pc->flag != SAME_NONZERO_PATTERN) {
if (!ilu->hdr.reuseordering) {
/* compute a new ordering for the ILU */
ierr = ISDestroy(&ilu->row);CHKERRQ(ierr);
ierr = ISDestroy(&ilu->col);CHKERRQ(ierr);
ierr = MatGetOrdering(pc->pmat,((PC_Factor*)ilu)->ordering,&ilu->row,&ilu->col);CHKERRQ(ierr);
if (ilu->row) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->row);CHKERRQ(ierr);}
if (ilu->col) {ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)ilu->col);CHKERRQ(ierr);}
/* Remove zeros along diagonal? */
if (ilu->nonzerosalongdiagonal) {
ierr = MatReorderForNonzeroDiagonal(pc->pmat,ilu->nonzerosalongdiagonaltol,ilu->row,ilu->col);CHKERRQ(ierr);
}
}
ierr = MatDestroy(&((PC_Factor*)ilu)->fact);CHKERRQ(ierr);
ierr = MatGetFactor(pc->pmat,((PC_Factor*)ilu)->solvertype,MAT_FACTOR_ILU,&((PC_Factor*)ilu)->fact);CHKERRQ(ierr);
ierr = MatILUFactorSymbolic(((PC_Factor*)ilu)->fact,pc->pmat,ilu->row,ilu->col,&((PC_Factor*)ilu)->info);CHKERRQ(ierr);
ierr = MatGetInfo(((PC_Factor*)ilu)->fact,MAT_LOCAL,&info);CHKERRQ(ierr);
ilu->hdr.actualfill = info.fill_ratio_needed;
ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)((PC_Factor*)ilu)->fact);CHKERRQ(ierr);
}
ierr = MatFactorGetError(((PC_Factor*)ilu)->fact,&err);CHKERRQ(ierr);
if (err) { /* FactorSymbolic() fails */
pc->failedreason = (PCFailedReason)err;
PetscFunctionReturn(0);
}
ierr = MatLUFactorNumeric(((PC_Factor*)ilu)->fact,pc->pmat,&((PC_Factor*)ilu)->info);CHKERRQ(ierr);
ierr = MatFactorGetError(((PC_Factor*)ilu)->fact,&err);CHKERRQ(ierr);
if (err) { /* FactorNumeric() fails */
pc->failedreason = (PCFailedReason)err;
}
}
ierr = PCFactorGetMatSolverPackage(pc,&stype);CHKERRQ(ierr);
if (!stype) {
const MatSolverPackage solverpackage;
ierr = MatFactorGetSolverPackage(((PC_Factor*)ilu)->fact,&solverpackage);CHKERRQ(ierr);
ierr = PCFactorSetMatSolverPackage(pc,solverpackage);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
static PetscErrorCode PCSetUp_Cholesky(PC pc)
{
PetscErrorCode ierr;
PetscBool flg;
PC_Cholesky *dir = (PC_Cholesky*)pc->data;
const MatSolverPackage stype;
MatFactorError err;
PetscFunctionBegin;
pc->failedreason = PC_NOERROR;
if (dir->hdr.reusefill && pc->setupcalled) ((PC_Factor*)dir)->info.fill = dir->hdr.actualfill;
ierr = MatSetErrorIfFailure(pc->pmat,pc->erroriffailure);
CHKERRQ(ierr);
if (dir->hdr.inplace) {
if (dir->row && dir->col && (dir->row != dir->col)) {
ierr = ISDestroy(&dir->row);
CHKERRQ(ierr);
}
ierr = ISDestroy(&dir->col);
CHKERRQ(ierr);
ierr = MatGetOrdering(pc->pmat,((PC_Factor*)dir)->ordering,&dir->row,&dir->col);
CHKERRQ(ierr);
if (dir->col && (dir->row != dir->col)) { /* only use row ordering for SBAIJ */
ierr = ISDestroy(&dir->col);
CHKERRQ(ierr);
}
if (dir->row) {
ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)dir->row);
CHKERRQ(ierr);
}
ierr = MatCholeskyFactor(pc->pmat,dir->row,&((PC_Factor*)dir)->info);
CHKERRQ(ierr);
ierr = MatFactorGetError(pc->pmat,&err);
CHKERRQ(ierr);
if (err) { /* Factor() fails */
pc->failedreason = (PCFailedReason)err;
PetscFunctionReturn(0);
}
((PC_Factor*)dir)->fact = pc->pmat;
} else {
MatInfo info;
if (!pc->setupcalled) {
ierr = MatGetOrdering(pc->pmat,((PC_Factor*)dir)->ordering,&dir->row,&dir->col);
CHKERRQ(ierr);
/* check if dir->row == dir->col */
ierr = ISEqual(dir->row,dir->col,&flg);
CHKERRQ(ierr);
if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"row and column permutations must equal");
ierr = ISDestroy(&dir->col);
CHKERRQ(ierr); /* only pass one ordering into CholeskyFactor */
flg = PETSC_FALSE;
ierr = PetscOptionsGetBool(((PetscObject)pc)->options,((PetscObject)pc)->prefix,"-pc_factor_nonzeros_along_diagonal",&flg,NULL);
CHKERRQ(ierr);
if (flg) {
PetscReal tol = 1.e-10;
ierr = PetscOptionsGetReal(((PetscObject)pc)->options,((PetscObject)pc)->prefix,"-pc_factor_nonzeros_along_diagonal",&tol,NULL);
CHKERRQ(ierr);
ierr = MatReorderForNonzeroDiagonal(pc->pmat,tol,dir->row,dir->row);
CHKERRQ(ierr);
}
if (dir->row) {
ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)dir->row);
CHKERRQ(ierr);
}
if (!((PC_Factor*)dir)->fact) {
ierr = MatGetFactor(pc->pmat,((PC_Factor*)dir)->solvertype,MAT_FACTOR_CHOLESKY,&((PC_Factor*)dir)->fact);
CHKERRQ(ierr);
}
ierr = MatCholeskyFactorSymbolic(((PC_Factor*)dir)->fact,pc->pmat,dir->row,&((PC_Factor*)dir)->info);
CHKERRQ(ierr);
ierr = MatGetInfo(((PC_Factor*)dir)->fact,MAT_LOCAL,&info);
CHKERRQ(ierr);
dir->hdr.actualfill = info.fill_ratio_needed;
ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)((PC_Factor*)dir)->fact);
CHKERRQ(ierr);
} else if (pc->flag != SAME_NONZERO_PATTERN) {
if (!dir->hdr.reuseordering) {
ierr = ISDestroy(&dir->row);
CHKERRQ(ierr);
ierr = MatGetOrdering(pc->pmat,((PC_Factor*)dir)->ordering,&dir->row,&dir->col);
CHKERRQ(ierr);
ierr = ISDestroy(&dir->col);
CHKERRQ(ierr); /* only use dir->row ordering in CholeskyFactor */
flg = PETSC_FALSE;
ierr = PetscOptionsGetBool(((PetscObject)pc)->options,((PetscObject)pc)->prefix,"-pc_factor_nonzeros_along_diagonal",&flg,NULL);
CHKERRQ(ierr);
if (flg) {
PetscReal tol = 1.e-10;
ierr = PetscOptionsGetReal(((PetscObject)pc)->options,((PetscObject)pc)->prefix,"-pc_factor_nonzeros_along_diagonal",&tol,NULL);
CHKERRQ(ierr);
ierr = MatReorderForNonzeroDiagonal(pc->pmat,tol,dir->row,dir->row);
CHKERRQ(ierr);
}
if (dir->row) {
ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)dir->row);
CHKERRQ(ierr);
}
}
ierr = MatDestroy(&((PC_Factor*)dir)->fact);
CHKERRQ(ierr);
ierr = MatGetFactor(pc->pmat,((PC_Factor*)dir)->solvertype,MAT_FACTOR_CHOLESKY,&((PC_Factor*)dir)->fact);
CHKERRQ(ierr);
ierr = MatCholeskyFactorSymbolic(((PC_Factor*)dir)->fact,pc->pmat,dir->row,&((PC_Factor*)dir)->info);
CHKERRQ(ierr);
ierr = MatGetInfo(((PC_Factor*)dir)->fact,MAT_LOCAL,&info);
CHKERRQ(ierr);
dir->hdr.actualfill = info.fill_ratio_needed;
ierr = PetscLogObjectParent((PetscObject)pc,(PetscObject)((PC_Factor*)dir)->fact);
CHKERRQ(ierr);
} else {
ierr = MatFactorGetError(((PC_Factor*)dir)->fact,&err);
CHKERRQ(ierr);
if (err == MAT_FACTOR_NUMERIC_ZEROPIVOT) {
ierr = MatFactorClearError(((PC_Factor*)dir)->fact);
CHKERRQ(ierr);
pc->failedreason = PC_NOERROR;
}
}
ierr = MatFactorGetError(((PC_Factor*)dir)->fact,&err);
CHKERRQ(ierr);
if (err) { /* FactorSymbolic() fails */
pc->failedreason = (PCFailedReason)err;
PetscFunctionReturn(0);
}
ierr = MatCholeskyFactorNumeric(((PC_Factor*)dir)->fact,pc->pmat,&((PC_Factor*)dir)->info);
CHKERRQ(ierr);
ierr = MatFactorGetError(((PC_Factor*)dir)->fact,&err);
CHKERRQ(ierr);
if (err) { /* FactorNumeric() fails */
pc->failedreason = (PCFailedReason)err;
}
}
ierr = PCFactorGetMatSolverPackage(pc,&stype);
CHKERRQ(ierr);
if (!stype) {
const MatSolverPackage solverpackage;
ierr = MatFactorGetSolverPackage(((PC_Factor*)dir)->fact,&solverpackage);
CHKERRQ(ierr);
ierr = PCFactorSetMatSolverPackage(pc,solverpackage);
CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
