Hi Luca, On Wednesday, December 20, 2017 at 5:20:43 PM UTC+1, Luca Heltai wrote:
> > What’s the tolerance of your solver? Is it a direct or an iterative > solver? If it is an iterative solver, is the tolerance right around 1e-12? > > Thank you for your reply. I adopted both iterative and direct solvers. For iterative solvers, e.g., the CG algorithm, the tolerance is set to be 1e-12 or even smaller. Actually, this does not affect the accuracy too much when it is small enough. For direct solvers, I adopted the UMFPACK algorithm. The results of the two types of algorithms do not differentiate too much, see the figure in my first post. Kind regards, Jie -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
