PETSc version 3.17.5

PCFactorSetAllowDiagonalFill

Causes all diagonal matrix entries to be treated as level 0 fill even if there is no non-zero location.

#include "petscpc.h" 
PetscErrorCode  PCFactorSetAllowDiagonalFill(PC pc,PetscBool flg)

Logically Collective on PC

	pc	- the preconditioner context
	flg	- PETSC_TRUE to turn on, PETSC_FALSE to turn off

-pc_factor_diagonal_fill <bool>

- allow the diagonal fill

Does not apply with 0 fill.

intermediate