[Ipopt] Overriding ConvergenceCheck from a User Application

[Stefan Vigerske]

Hi,

> Is there a facility within Ipopt to to employ a custom ConvergenceCheck
> subclass from a user application? I can always add a custom version to the
> Ipopt source and rebuild Ipopt, but this involves distributing a patch to
> all users of the custom version, which is a bit cumbersome.

The TNLP has a routine intermediate_callback that is called at every 
iteration. You could implement some checks there and tell Ipopt to stop.

Regarding the compressed row or column format, I think there is no such 
interface. But converting from one to the other should be very simple, 
since you need to adapt only one of the three arrays.

Stefan
>
> Thank you for your advice!
>
> Best regards,
> Breannan Smith
>
>
>
>
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