[Ipopt] KKT norms

[Fabian Wein]

Hello,

no hint? Is there a paper, or a hint where I can find it in the code?

Thanks,

Fabian


> I wanted to confirm the IPOPT KKT norms and I cannot validate the
> complementarity and feasibility norms of IPOPT.
>
> With a high debuglevel (8?) I confirmed, that my function values are
> the same as in IPOPT.
>
> With a tolerance of 1e-6 for tol, constr_viol_tol and
> acceptable_constr_viol_tol I get a feasible solution.
>
> One of my constraints has a violation of 9e-9 and is therefore within
> the tolerances. However, IPOPT says
> feasibility 0.0.
>
> This constraint with a Lagrange maltilplier of 3e3 makes my maximal
> complementarity error x*e-5 but IPOPT
> says something x*e-7.
>
> Thanks for any hint - It's not the most urgent stuff but it puzzles me.
>
> Fabian