petsc-master 2018-02-18
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MatLUFactorSymbolic

Performs symbolic LU factorization of matrix. Call this routine before calling MatLUFactorNumeric().

Synopsis

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

Input Parameters

fact - the factor matrix obtained with MatGetFactor()
mat - the matrix
row, col - 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

Notes: See Users-Manual: ch_mat for additional information about choosing the fill factor for better efficiency.

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

MatLUFactor(), MatLUFactorNumeric(), MatCholeskyFactor(), MatFactorInfo, MatFactorInfoInitialize()

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

MatLUFactorSymbolic_AIJMKL_CPARDISO in src/mat/impls/aij/mpi/mkl_cpardiso/mkl_cpardiso.c
MatLUFactorSymbolic_AIJMUMPS in src/mat/impls/aij/mpi/mumps/mumps.c
MatLUFactorSymbolic_BAIJMUMPS in src/mat/impls/aij/mpi/mumps/mumps.c
MatLUFactorSymbolic_AIJPASTIX in src/mat/impls/aij/mpi/pastix/pastix.c
MatLUFactorSymbolic_STRUMPACK in src/mat/impls/aij/mpi/strumpack/strumpack.c
MatLUFactorSymbolic_SuperLU_DIST in src/mat/impls/aij/mpi/superlu_dist/superlu_dist.c
MatLUFactorSymbolic_SeqAIJ_inplace in src/mat/impls/aij/seq/aijfact.c
MatLUFactorSymbolic_SeqAIJ in src/mat/impls/aij/seq/aijfact.c
MatLUFactorSymbolic_Essl in src/mat/impls/aij/seq/essl/essl.c
MatLUFactorSymbolic_KLU in src/mat/impls/aij/seq/klu/klu.c
MatLUFactorSymbolic_LUSOL in src/mat/impls/aij/seq/lusol/lusol.c
MatLUFactorSymbolic_Matlab in src/mat/impls/aij/seq/matlab/aijmatlab.c
MatLUFactorSymbolic_AIJMKL_PARDISO in src/mat/impls/aij/seq/mkl_pardiso/mkl_pardiso.c
MatLUFactorSymbolic_SeqAIJCUSPARSE in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu
MatLUFactorSymbolic_SuperLU in src/mat/impls/aij/seq/superlu/superlu.c
MatLUFactorSymbolic_UMFPACK in src/mat/impls/aij/seq/umfpack/umfpack.c
MatLUFactorSymbolic_SeqBAIJ in src/mat/impls/baij/seq/baijfact3.c
MatLUFactorSymbolic_SeqBAIJ_inplace in src/mat/impls/baij/seq/baijfact3.c
MatLUFactorSymbolic_SeqDense in src/mat/impls/dense/seq/dense.c
MatLUFactorSymbolic_Elemental in src/mat/impls/elemental/matelem.cxx

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages