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Performs symbolic Cholesky factorization of a symmetric matrix.


#include "petscmat.h" 
PetscErrorCode MatCholeskyFactorSymbolic(Mat fact,Mat mat,IS perm,const MatFactorInfo *info)
Collective on Mat

Input Parameters

fact - the factor matrix obtained with MatGetFactor()
mat - the matrix
perm - row and column permutations
info - options for factorization, includes
         fill - expected fill as ratio of original fill.
         dtcol - pivot tolerance (0 no pivot, 1 full column pivoting)
                  Run with the option -info to determine an optimal value to use


See MatLUFactorSymbolic() for the nonsymmetric case. See also MatCholeskyFactor() and MatCholeskyFactorNumeric().

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

MatLUFactorSymbolic(), MatCholeskyFactor(), MatCholeskyFactorNumeric()

Developer Note: fortran interface is not autogenerated as the f90 interface defintion cannot be generated correctly [due to MatFactorInfo]






MatCholeskyFactorSymbolic_SparseElemental in src/mat/impls/aij/mpi/clique/clique.cxx
MatCholeskyFactorSymbolic_MUMPS in src/mat/impls/aij/mpi/mumps/mumps.c
MatCholeskyFactorSymbolic_SBAIJPASTIX in src/mat/impls/aij/mpi/pastix/pastix.c
MatCholeskyFactorSymbolic_SeqAIJ in src/mat/impls/aij/seq/aijfact.c
MatCholeskyFactorSymbolic_SeqAIJCUSPARSE in src/mat/impls/aij/seq/seqcusparse/
MatCholeskyFactorSymbolic_SeqBAIJ in src/mat/impls/baij/seq/baijfact.c
MatCholeskyFactorSymbolic_SeqDense in src/mat/impls/dense/seq/dense.c
MatCholeskyFactorSymbolic_Elemental in src/mat/impls/elemental/matelem.cxx
MatCholeskyFactorSymbolic_CHOLMOD in src/mat/impls/sbaij/seq/cholmod/sbaijcholmod.c
MatCholeskyFactorSymbolic_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaijfact.c
MatCholeskyFactorSymbolic_ScaLAPACK in src/mat/impls/scalapack/matscalapack.c

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