[Ipopt] Cutting back alpha due to evaluation error

[Martin Schmidt]

Hi Stefan,

>>> It seems you are using GAMS.  If you however also have an AMPL model, you can set the option
>>> 
>>> halt_on_ampl_error yes
>>> 
>>> from within AMPL (ipopt_options... it will not work from ipopt.opt).  Then AMPL will stop in case of an evaluation error and tell you which constraint is causing the trouble.
>> 
>> @Stefan: Isn't that something that would be nice in the GAMS interface, too? ;-)
> 
> I think if you set the domain violation limit of Gams/Ipopt to 1 (domlim=1), then it should also stop around the point where it got into trouble. I forgot about this feature :-).

I will try this when I'm back in my office next week.

Martin