Marco,

like Jean-Paul said the Trilinos wrappers are mainly for the linear 
algebra. This doesn't mean that you can't use a package that we don't have 
wrapper for. You can always get the underlying Trilinos object from the 
wrapper and use it when you need to call another package. When you choose 
between Trilinos and deal.II, you need to be aware that right now deal.II 
only uses Epetra not Tpetra. I hope to find time to work on the Tpetra 
stack this summer but for now you have to use Epetra. There will be an easy 
way to switch from the Epetra stack to the Tpetra stack though.

Best,

Bruno

On Tuesday, June 7, 2016 at 10:57:29 PM UTC-4, Marco Delchini wrote:
>
> Hello,
>
> I am part of a research group in ORNL that is looking at various C++ 
> libraries for development of a new application solving for single- and 
> two-phase flows. We are currently undecided between Trilinos and deal.ii. I 
> have very little experience in deal.ii and know that it can be coupled to 
> Trilinos.
>
> My understanding of Trilinos is that it is a collection of multiple 
> packages dealing with preconditioner, solvers, automatic differentiation, 
> .... My question is how many of these packages are available through 
> deal.ii when coupled to Trilinos?
>
> I would appreciate any insight from deal.ii developers and users who have 
> experience with using Trilinos in deal.ii
>
> Thanks,
> Marco
>

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