[petsc-users] How to use AD for unstructured grid

[behzad baghapour]

OK. Thanks. I should try it.

On Sun, Aug 19, 2012 at 9:56 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Sun, Aug 19, 2012 at 1:19 PM, behzad baghapour <
> behzad.baghapour at gmail.com> wrote:
>
>> Dear developers,
>>
>> I need to evaluate Jacobian matrix using an AD tool. I read from the
>> Petsc manual that it can only work with structured grid via DMMG interface.
>> Is there a possible way to use it for unstructured grid and set it for KSP
>> structure?
>>
>
> ADIC has not been supported for a long time so the "automatic" AD support
> in PETSc is no longer supported either. Unfortunately, the successors to
> ADIC, while more "capable", are much more involved to build and to use.
>
> You have always been able to use any AD tool internally to define the
> Jacobian (in assembled or unassembled form).
>
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