DMDASNESSetJacobianLocal

set a local Jacobian evaluation function for use with DMDA

Synopsis

#include "petscdmda.h" 
#include "petscsnes.h" 
PetscErrorCode DMDASNESSetJacobianLocal(DM dm, PetscErrorCode (*func)(DMDALocalInfo *info, void *x, Mat J, Mat M, void *ctx), void *ctx)

Logically Collective

Input Parameters

• dm - DM to associate callback with

• func - local Jacobian evaluation function

• ctx - optional context for local Jacobian evaluation

Calling sequence of func

• info - DMDALocalInfo defining the subdomain to evaluate the Jacobian at

• x - dimensional pointer to state at which to evaluate Jacobian (e.g. PetscScalar *x or **x or ***x)

• J - Mat object for the Jacobian

• M - Mat object used to compute the preconditioner often J

• ctx - optional context passed above

Note

The J and M matrices are created internally by DMCreateMatrix()

See Also

SNES: Nonlinear Solvers, DMDA, DMDASNESSetFunctionLocal(), DMSNESSetJacobian(), DMDACreate1d(), DMDACreate2d(), DMDACreate3d()

Level

beginner

Location

src/snes/utils/dmdasnes.c

Examples

src/snes/tutorials/ex48.c
src/snes/tutorials/ex15.c
src/snes/tutorials/ex55.c
src/snes/tutorials/ex4.c
src/snes/tutorials/ex16.c
src/snes/tutorials/ex5.c
src/snes/tutorials/ex9.c

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