On Thu, 30 Jul 2015 12:27:47 +0100 "Garth N. Wells" <gn...@cam.ac.uk> wrote:
> On 30 July 2015 at 12:18, Mikael Mortensen > <mikael.morten...@gmail.com> wrote: > > > Hi > > > > Back from vacation and very pleased :-) to find that I can update my > > Fenics installation to version 1.6 in less than 10 minutes! Used to > > take at least a few days. > > > > Now I’m trying to upgrade my applications to 1.6 and I just found > > that some of the common preconditioners (jacobi, bjacobi, > > additive_schwarz) have gone missing. Any reason for this or is it a > > mistake? They seem to have disappeared recently from the map > > _methods_descr in PETScPreconditioner.cpp. > > > > > The code in question was a mess and the wrapping approach > unsustainable, which is why it was removed. The demand for the wrapping comes from the requirement of having certain amount of control portable across backends. Is this requirement getting abandoned, or at least weakened? Jan > > You can control the PETSc preconditioners via PETSc options. This > gives you far greater control, makes DOLFIN code simpler and provides > greater consistency when using PETSc solver. There will be more > changes in DOLFIN 1.7 to give greater control over preconditioning. > > Garth > > > > > > Best regards > > > > Mikael > > > > _______________________________________________ > > fenics mailing list > > fenics@fenicsproject.org > > http://fenicsproject.org/mailman/listinfo/fenics > > _______________________________________________ fenics mailing list fenics@fenicsproject.org http://fenicsproject.org/mailman/listinfo/fenics
