DMDASNESSetJacobianLocalVec#

set a local Jacobian evaluation function that operates on a local vector with DMDA

Synopsis#

#include "petscdmda.h" 
#include "petscsnes.h" 
PetscErrorCode DMDASNESSetJacobianLocalVec(DM dm, PetscErrorCode (*func)(DMDALocalInfo *, Vec, Mat, Mat, void *), void *ctx)

Logically Collective

Input Parameters#

  • dm - DM to associate callback with

  • func - local Jacobian evaluation

  • ctx - optional context for local Jacobian evaluation

Calling sequence of func#

PetscErrorCode (*func)(DMDALocalInfo *info, Vec x, Mat J, Mat M, void *ctx),

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

  • x - state vector at which to evaluate Jacobian

  • J - Mat object for the Jacobian

  • M - Mat object for the Jacobian preconditioner matrix, often J

  • ctx - optional context passed above

See Also#

DMDA, DMDASNESSetJacobianLocal(), DMDASNESSetFunctionLocalVec(), DMSNESSetJacobian(), DMDACreate1d(), DMDACreate2d(), DMDACreate3d()

Level#

beginner

Location#

src/snes/utils/dmdasnes.c

Examples#

src/snes/tutorials/ex55.c

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