SNESSetUpMatrices#

ensures that matrices are available for SNES Newton-like methods, this is called by SNESSetUp_XXX()

Synopsis#

#include "petscsnes.h"  
PetscErrorCode SNESSetUpMatrices(SNES snes)

Collective

Input Parameter#

snes - SNES object to configure

Note#

If the matrices do not yet exist it attempts to create them based on options previously set for the SNES such as -snes_mf

Developer Note#

The functionality of this routine overlaps in a confusing way with the functionality of SNESSetUpMatrixFree_Private() which is called by SNESSetUp() but sometimes SNESSetUpMatrices() is called without SNESSetUp() being called. A refactorization to simplify the logic that handles the matrix-free case is desirable.

Level#

developer

Location#

src/snes/interface/snes.c

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