petsc-3.14.6 2021-03-30
MatICCFactor
Performs in-place incomplete Cholesky factorization of matrix.
Synopsis
#include "petscmat.h"
PetscErrorCode MatICCFactor(Mat mat,IS row,const MatFactorInfo *info)
Collective on Mat
Input Parameters
| mat | - the matrix
|
| row | - row/column permutation
|
| fill | - expected fill factor >= 1.0
|
| level | - level of fill, for ICC(k)
|
Notes
Probably really in-place only when level of fill is zero, otherwise allocates
new space to store factored matrix and deletes previous memory.
Most users should employ the simplified KSP interface for linear solvers
instead of working directly with matrix algebra routines such as this.
See, e.g., KSPCreate().
See Also
MatICCFactorSymbolic(), MatLUFactorNumeric(), MatCholeskyFactor()
Developer Note: fortran interface is not autogenerated as the f90
interface defintion cannot be generated correctly [due to MatFactorInfo]
Level
developer
Location
src/mat/interface/matrix.c
Implementations
MatICCFactor_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaij.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages