MatCholeskyFactor#
Performs in-place Cholesky factorization of a symmetric matrix.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatCholeskyFactor(Mat mat, IS perm, const MatFactorInfo *info)
Collective
Input Parameters#
mat - the matrix
perm - row and column permutations
info - expected fill as ratio of original fill
Notes#
See MatLUFactor() for the nonsymmetric case. See also MatGetFactor(),
MatCholeskyFactorSymbolic(), and MatCholeskyFactorNumeric().
Most users should employ the KSP interface for linear solvers
instead of working directly with matrix algebra routines such as this.
See, e.g., KSPCreate().
Fortran Note#
A valid (non-null) info argument must be provided
See Also#
Matrices, Mat, Matrix Factorization, MatGetFactor(), MatFactorInfo, MatLUFactor(), MatCholeskyFactorSymbolic(), MatCholeskyFactorNumeric()
MatGetOrdering()
Level#
developer
Location#
Implementations#
MatCholeskyFactor_SeqDense() in src/mat/impls/dense/seq/dense.c
MatCholeskyFactor_Elemental() in src/mat/impls/elemental/matelem.cxx
MatCholeskyFactor_SeqSBAIJ() in src/mat/impls/sbaij/seq/sbaijfact.c
MatCholeskyFactor_ScaLAPACK() in src/mat/impls/scalapack/matscalapack.c
MatCholeskyFactor_HT() in src/mat/impls/transpose/htransm.c
MatCholeskyFactor_Transpose() in src/mat/impls/transpose/transm.c
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Index of all manual pages