TSComputeRHSJacobianConstant#

Reuses a Jacobian that is time-independent.

Synopsis#

#include "petscts.h"  
PetscErrorCode TSComputeRHSJacobianConstant(TS ts, PetscReal t, Vec U, Mat A, Mat B, void *ctx)

Collective

Input Parameters#

  • ts - time stepping context

  • t - time at which to evaluate

  • U - state at which to evaluate

  • ctx - context

Output Parameters#

  • A - pointer to operator

  • B - pointer to preconditioning matrix

Note#

This function is intended to be passed to TSSetRHSJacobian() to evaluate the Jacobian for linear time-independent problems.

See Also#

TS: Scalable ODE and DAE Solvers, TS, TSSetRHSFunction(), TSSetRHSJacobian(), TSComputeRHSFunctionLinear()

Level#

intermediate

Location#

src/ts/interface/ts.c

Examples#

src/tao/unconstrained/tutorials/spectraladjointassimilation.c
src/ts/tutorials/ex3.c
src/ts/tutorials/ex4.c
src/ts/tutorials/ex5.c
src/ts/tutorials/ex6.c
src/ts/tutorials/ex74.c

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