SNESVISetRedundancyCheck#

Provide a function to check for any redundancy in the VI active set

Synopsis#

#include "petscsnes.h" 
PetscErrorCode SNESVISetRedundancyCheck(SNES snes, PetscErrorCode (*func)(SNES, IS, IS *, void *), void *ctx)

Logically Collective

Input Parameters#

  • snes - the SNESVINEWTONRSLS context

  • func - the function to check of redundancies

  • ctx - optional context used by the function

Note#

Sometimes the inactive set will result in a singular sub-Jacobian problem that needs to be solved, this allows the user, when they know more about their specific problem to provide a function that removes the redundancy that results in the singular linear system

See Also#

SNES: Nonlinear Solvers, SNES, SNESVINEWTONRSLS, SNESVIGetInactiveSet(), DMSetVI()

Level#

advanced

Location#

src/snes/impls/vi/rs/virs.c

Index of all SNES routines
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Index of all manual pages