[Ipopt] algorithms

[Andreas Waechter]

Hi Yunfei,

The options enable different versions of related alorithm, so it is not 
really that there are many different algorithm implemented in Ipopt.

You can see all Ipopt options by using the print_options_documentation 
option, or by running the AMPL solver executable with

ipopt --print-options

The only option with the name _algorithm is mehrotra_algorithm.  This 
triggers certain simplifications and options that seem to improve 
performance of Ipopt solves an LP or QP.

Andreas

On Fri, 25 Feb 2011, yunfei song wrote:

> Hi,
>
> How many algorithm does Ipopt include? There is one option which can choose different algorithms:
>                   XXXX_algorithm yes.
> And what are the corresponding letter for each algorithm in XXXX place?
>
> Thanks,
>
> Yunfei
>