Dear Jed, Which AD tool you suggest in the case of fast evaluations? Operator Overlapping types like ADOL-C or source code transformation types like ADIC?
In addition, I prefer the minimum possible change to the my code structure :-) Thanks a lot, BehZad On Sun, Aug 19, 2012 at 10:06 PM, behzad baghapour < behzad.baghapour at gmail.com> wrote: > 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). >> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120820/7bfff7d5/attachment.html>
