[Ipopt] Iteration info

Andreas Waechter andreasw at watson.ibm.com
Tue May 26 12:58:37 EDT 2009


Adela,

If you are looking for information during each iteration, the 
intermediate_callback callback method of the TNLP might be what you need?

Andreas

On Tue, 26 May 2009, Stefan Vigerske wrote:

> Hi,
>
> not so sure what you mean.
> But maybe the API documentation is helpful:
> http://www.coin-or.org/Doxygen/Ipopt/
>
> Esp.
> http://www.coin-or.org/Doxygen/Ipopt/class_ipopt_1_1_t_n_l_p.html
> http://www.coin-or.org/Doxygen/Ipopt/class_ipopt_1_1_ipopt_calculated_quantities.html
>
> Stefan
>
> Dl wrote:
>> Hi,
>>
>>
>>
>> I'm using Ipopt from cpp, and I wish to use the primal infeasibility, dual infeasibility, constraint violation values, ... and other "iteration" information in my main program. Does anyone know of how are they called?
>>
>>
>>
>> For example, to get the primal values I just need to look into "x[i]", or the objective function value is "obj_value". Is there a place with the list with the name of this kind of info?
>>
>>
>>
>> Many thanks!!!
>>
>> Adela
>>
>>
>>
>>
>>
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>
>
> -- 
> Stefan Vigerske
> Humboldt University Berlin, Numerical Mathematics
> http://www.math.hu-berlin.de/~stefan
>
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