PETSc version 3.17.5
SNESSetUpdate
Sets the general-purpose update function called at the beginning of every iteration of the nonlinear solve. Specifically it is called just before the Jacobian is "evaluated".
Synopsis
#include "petscsnes.h"
PetscErrorCode SNESSetUpdate(SNES snes, PetscErrorCode (*func)(SNES, PetscInt))
Logically Collective on SNES
Input Parameters
| snes | - The nonlinear solver context
|
| func | - The function
|
Calling sequence of func
func (SNES snes, PetscInt step);
| step | - The current step of the iteration
|
Note
This is NOT what one uses to update the ghost points before a function evaluation, that should be done at the beginning of your FormFunction()
This is not used by most users.
There are a varity of function hooks one many set that are called at different stages of the nonlinear solution process, see the functions listed below.
See Also
SNESSetJacobian(), SNESSolve(), SNESLineSearchSetPreCheck(), SNESLineSearchSetPostCheck(), SNESNewtonTRSetPreCheck(), SNESNewtonTRSetPostCheck(),
SNESMonitorSet(), SNESSetDivergenceTest()
Level
advanced
Location
src/snes/interface/snes.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages