Choosing the best iterative method / Achieve convergence
Posted: 05 Sep 2017, 08:29
I usually use iterative methods to solve my FEM-problems. Not only because I lack the math libraries for direct solvers, but also because you can run iterative methods easily on multiple cores. However, finding the right solver settings is often more trial and error than actual knowing. Especially, the best settings for the method and the preconditioner to achieve convergence.
Is there any cookbock which methods fits which problem? Or what to do when the problem does not converge. I am assuming that there is no general rule, but lets speak from experience.
Maybe you can post your tricks?
How do you solve convergence problems?
Do you have a "standard" iterative method that you prefer?
Thanks,
Rainer
Is there any cookbock which methods fits which problem? Or what to do when the problem does not converge. I am assuming that there is no general rule, but lets speak from experience.
Maybe you can post your tricks?
How do you solve convergence problems?
Do you have a "standard" iterative method that you prefer?
Thanks,
Rainer