[Ipopt] MA86 library

[Joel Andersson]

Hello!

I have seen some mails to the list about the MA86 and MA97 linear
solvers. Can anyone report any good or bad experiences from using
these linear solvers with Ipopt? If I understand things correctly,
MA86 and MA97 are parallelized with OpenMP making them suitable for
multicore architectures, but other than that, are they more or less
equivalent to MA57 in terms of license and method used?

Also, what is the difference between the two, from the documentation I
see that MA86 is likely faster, but not "bit-compatible". What is this
and is it important for Ipopt? I also saw that there is yet another
possible HSL solver - MA77 which is apparently more economical in
terms of memory if I understand things right.

Does anyone have any experiences to share?

Best,
Joel

2012/2/9 Stefan Vigerske <stefan at math.hu-berlin.de>:
> Hi,
>
>
>> I started trying  BETA GAMS 23.8 with Ipopt 3.10. I wanted to try MA86
>> along
>> with Ipopt, so I downloaded the code. In order to make it work with Ipopt,
>> I
>> have to compile it into a library called libhsl.dll. My question is if the
>> compilation process of MA86 is the same as MA57 (w/ MS Visual Studio).
>> Thank
>> you.
>
>
> It's more-or-less the same. Files are different, but you would just need
> Fortran and C compilers, too.
>
> However, there are some problems with the Ipopt/MA86 interface in GAMS 23.8
> beta. These should be fixed in the final GAMS 23.8 release.
>
> Stefan
>
>>
>>
>>
>> Manuel Andrés Ramos Castillo
>>
>> Asistente Graduado
>>
>> Departamento de Ingeniería Química
>>
>> Universidad de Los Andes
>>
>> Tel. 3394949 Ext. 1841
>>
>> Edificio Mario Laserna
>>
>> Oficina 751
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> Ipopt mailing list
>> Ipopt at list.coin-or.org
>> http://list.coin-or.org/mailman/listinfo/ipopt
>
>
>
> --
> Stefan Vigerske
> Humboldt University Berlin, Numerical Mathematics
> http://www.math.hu-berlin.de/~stefan
> _______________________________________________
> Ipopt mailing list
> Ipopt at list.coin-or.org
> http://list.coin-or.org/mailman/listinfo/ipopt



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Joel Andersson, PhD Student
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