petsc-3.14.6 2021-03-30
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MatFactorGetUseOrdering

 Indicates if the factorization uses the ordering provided in MatLUFactorSymbolic(), MatCholeskyFactorSymbolic()

Synopsis

#include "petscmat.h" 
PetscErrorCode MatFactorGetUseOrdering(Mat mat, PetscBool *flg)
Logically Collective on Mat

Input Parameters

mat - the matrix

Output Parameters

flg - PETSC_TRUE if uses the ordering

Notes

Most internal PETSc factorizations use the ordering past to the factorization routine but external packages do no, thus we want to skip the ordering when it is not needed.

See Also

MatCopy(), MatDuplicate(), MatGetFactorAvailable(), MatGetFactor(), MatLUFactorSymbolic(), MatCholeskyFactorSymbolic()

Level

developer

Location

src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages