Hi Julian,
I had a quick look in the source code to verify that this flag is being passed
to the solver
<https://github.com/dealii/dealii/blob/master/source/lac/trilinos_solver.cc#L468>
(it is). I've not used this option before so I'm afraid I don't have many
ideas. The only thing that comes to mind is that the following option, if
set, may suppress the output:
deallog.depth_console(0);
If you do have this set, you could (presumably) raise the console depth
either globally or only around where you use the solver in order to get
minimal extra output. I'm not particularly confident that my suggestion
will work since I didn't see the deal.II internal logstream being attached
to the solver anywhere in the code. But its not much effort to try this out
anyway.
Regards,
Jean-Paul
On Friday, May 26, 2017 at 7:30:08 PM UTC+2, Julian A wrote:
>
> Hi,
>
> i'm using the following code to setup a solver
>
> namespace LA {
> using namespace dealii::LinearAlgebraTrilinos;
> }
>
>
> SolverControl solver_control(100, 1e-12);
> LA::SolverCG::AdditionalData cgdata;
> cgdata.output_solver_details = true;
> LA::SolverCG solver(solver_control, cgdata);
> solver.solve(system_matrix, completely_distributed_solution, system_rhs,
> prec);
>
> The solver works and outputs the correct solution. Although no output from
> AztecOO does occur. I traced the passing of cgdata.output_solver_details
> with gdb and it gets handed over the the solver.
>
> When i run step-33 which uses AztecOO directly and not via the interface,
> i receive the output that i expect. I also tested different AztecOO solvers
> (GMRES) in my code part but that doesn't produce verbose output either.
>
> Is this expected or suppressed somewhere? I'm basically using step-40 to
> play around with different options.
>
> What are other options to retrieve or log the residual at each timestep?
>
> Regards
>
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