OPM/opm-autodiff — pull request #199 by dr-robertk (2014-09-04 15:10:15+00:00)
Title: enabled DUNE-ISTL::AMG and DUNE-ISTL::CGSolver in CPRPreconditioner.

The default behavior is the same as before, i.e. DUNE-ISTL::ILU0 and DUNE-ISTL::BiCGSolver are used
for solving the elliptic problem.

For some setting the AMG/CG combination can really speed up the solver, for others it doesn't. I still need to investigate more on the solver part. Maybe Markus can have a look on the AMG args.