[Trilinos-Users] [EXTERNAL] Stratimikos and Tpetra with preconditioners
Fuller, Timothy Jesse
tjfulle at sandia.gov
Sat Apr 15 20:07:22 EDT 2017
Hi Bart, I'm away from my computer at the moment, but I have several driver programs that set up Tpetra/Ifpack2/Belos problems. I can send them your way if it would help
-- Tim --
Tim Fuller, PhD
Sandia National Laboratories
E: tjfulle at sandia.gov<mailto:tjfulle at sandia.gov>
P: (505) 205-0003
On Apr 15, 2017, at 4:48 PM, Bart Janssens <bart at bartjanssens.org<mailto:bart at bartjanssens.org>> wrote:
I've been trying to get to grips with Tpetra, and I want to solve a simple 2D Laplace problem as a test. With Epetra, we used Stratimikos to allow configuring all aspects of the solution, including preconditioning type and settings, by using Stratimikos_DefaultLinearSolverBuilder, which seems to be Epetra-only unless I missed something. My current attempt with Tpetra is here:
The problem is that I don't see any way to add a preconditioner using just the ParameterList, it seems only Belos can be configured. Is it correct that adding and configuring a preconditioner like Ifpack2 or MueLu is not supported through Stratimikos? If so, is there any advantage from going through Thyra, it seems I might as well configure Belos directly using parameter lists?
Anyway, long story short: what is the recommended method to add these preconditioners?
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