HI Xiangdong We have use the Tapenade AD package to compute sparse matrix jacobians for CFD problems. We use the result from the AD to populate a PETSc sparse matrix and then use PETSc to solve the resulting linear system.
Hope that helps. Gaetan On Wed, Oct 1, 2014 at 4:23 PM, Barry Smith <bsm...@mcs.anl.gov> wrote: > > On Oct 1, 2014, at 3:16 PM, Jed Brown <j...@jedbrown.org> wrote: > > > Xiangdong <epsco...@gmail.com> writes: > > > >> Is there any reason that AD is not supported in PETSc? Is it because the > >> ADIFOR/ADIC library itself? > > > > Those libraries are not maintained and have license problems. You're > > welcome to use an AD tool yourself. The support in PETSc was mostly > > just making simple examples cleaner; it wasn't widely used in real > > applications. > > Wasn’t used at all in anything but trivial codes. > > > >
