[petsc-users] SNESSetJacobian and TSSetRHSJacobian

[Zou (Non-US), Ling]

Hi All,

In 'SNESSetJacobian' I could pass 'SNESDefaultComputeJacobian' to let PETSc
do the finite differencing for me to calculate Jacobian, i.e.,

SNESSetJacobian(snes, J, J, SNESDefaultComputeJacobian, PETSC_NULL);


In TSSetRHSJacobian, this options seems to be invalid, i.e., it requires a
function to evaluate the Jacobian, i.e.,


TSSetRHSJacobian(ts, J, J, FormRHSJacobian, PETSC_NULL);


Is it possible that TS could also use PETSc finite differencing Jacobian as
SNES does?


Best,


Ling