[Ipopt] Linear solver comparison

[Cote, Pascal (RTA)]

Hi everyone,

I recently use Ipopt for my project. I try ma27 solver and its work very well. I also try ma57 with metis but I observe that the results are worst (more slow and worst objective function value). I also buy a license for pardiso and it is the same. In fact pardiso is worst than ma57 (with openmp on a quad core).

Did you know if it exist some papers or reports that present comparison results with Ipopt using different linear solver because it seems very strange to me why I observed this results?


Pascal


Avis:
Ce message et toute pi?ce jointe sont la propri?t? de Rio Tinto et sont destin?s seulement aux personnes ou ? l'entit? ? qui le message est adress?. Si vous avez re?u ce message par erreur, veuillez le d?truire et en aviser l'exp?diteur par courriel. Si vous n'?tes pas le destinataire du message, vous n'?tes pas autoris? ? utiliser, ? copier ou ? divulguer le contenu du message ou ses pi?ces jointes en tout ou en partie.

Notice:
This message and any attachments are the property of Rio Tinto and are intended solely for the named recipients or entity to whom this message is addressed. If you have received this message in error please inform the sender via e-mail and destroy the message. If you are not the intended recipient you are not allowed to use, copy or disclose the contents or attachments in whole or in part.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://list.coin-or.org/pipermail/ipopt/attachments/20110419/78b79e11/attachment.html