I found where my settings are overridden. I have a nonlinear system in my
EquationSystems object and in src/systems/nonlinear_implicit_system.C line 47:
es.parameters.set<Real> ("linear solver tolerance") = 1e-5;
es.parameters.set<Real> ("linear solver minimum tolerance") = 1e-5;
So even if I set the ksp_rtol and ksp_atol these will be passed to the PETSc
KSP object.
I did the ugly fix and changed these for now. But it would be a good idea if
someone can fix this (from experience PETSc default KSP tolerances are most
often not strict enough).
Best,
Ata
On Jan 10, 2013, at 12:07 PM, Ataollah Mesgarnejad <[email protected]>
wrote:
> Dear all,
>
> I noticed when I pass ksp_rtol and ksp_atol in the command line they don't
> override the "linear solver tolerance" parameter set in the
> EquationSystems::parameters! Is this an intended behavior or am I missing
> something? And how can I pass my own tolerances for the KSP solve?
>
> thanks,
> Ata
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