typedef struct { PetscReal diagonal_fill; /* force diagonal to fill in if initially not filled */ PetscReal usedt; PetscReal dt; /* drop tolerance */ PetscReal dtcol; /* tolerance for pivoting */ PetscReal dtcount; /* maximum nonzeros to be allowed per row */ PetscReal fill; /* expected fill, nonzeros in factored matrix/nonzeros in original matrix */ PetscReal levels; /* ICC/ILU(levels) */ PetscReal pivotinblocks; /* for BAIJ and SBAIJ matrices pivot in factorization on blocks, default 1.0 factorization may be faster if do not pivot */ PetscReal zeropivot; /* pivot is called zero if less than this */ PetscReal shifttype; /* type of shift added to matrix factor to prevent zero pivots */ PetscReal shiftamount; /* how large the shift is */ } MatFactorInfo;In Fortran these are simply double precision arrays of size MAT_FACTORINFO_SIZE, that is use Many br
MatFactorInfo info(MAT_FACTORINFO_SIZE)
Notes: These are not usually directly used by users, instead use PC type of LU, ILU, CHOLESKY or ICC. Many br
You can use MatFactorInfoInitialize() to set default values. Many br
Many br
Level:developer
Location:src/mat/../../include/petscmat.h
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages