[petsc-users] TSSetIJacobian is never called

[Jed Brown]

Sharp Stone <thronesf at gmail.com> writes:

> Hi Matt,
>
> Thank you very much for your reply.
>
> The ts_view output is attached below. I found my code results say "SNES has
> not been set up", and PC "has not been set up". Does this cause the
> problem? If so I do not see example ex17 explicitly set up the snes object?

Those objects are set up on the first time step (inside TSSolve).

> PS: I don't know why the -ts_view option does not work in my command line,

Are you sure it doesn't output after the TSSolve?  The example does.

> so I use TSView() routine just before the TSSolve() routine.

You should call it *after* the solve so we can see what happened during
the solve.
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