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<body>Thanks Andreas, I suppose that I was being hopeful, more than anything;)<BR>
The new beta version of MKL has some improvements to the sparse solvers, but reading it more closely, <BR>
this may not mean that it has a newer version of Pardiso included. Is this the case, Olaf?<BR>
<BR>
Thanks,<BR>
<BR>
Graham<BR><BR>
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> Date: Mon, 14 Aug 2006 09:53:03 -0400<BR>> From: andreasw@watson.ibm.com<BR>> To: g_sparrow@hotmail.com<BR>> CC: coin-ipopt@list.coin-or.org; Olaf.Schenk@unibas.ch<BR>> Subject: Re: [Coin-ipopt] MKL 9.0 beta / Pardiso<BR>> <BR>> Hi Graham,<BR>> <BR>> (I'm copying Olaf Schenk, the main developer of Pardiso, so that he can <BR>> intervene in case I write something wrong.)<BR>> <BR>> As far as I understood from Olaf, the changes that were done in order to <BR>> improve the Pardiso performance in Ipopt, especially with respect to <BR>> inertia detection for proper handling of non-convex nonlinear optimization <BR>> problems, are not included in the MKL library.<BR>> <BR>> You are probably able to link and run the code with the MKL Pardiso <BR>> version, but it might not do the right thing in a number of optimization <BR>> problems.<BR>> <BR>> Andreas<BR>> <BR>> > I am evaluating Intel MKL 9.0 beta which has a new version of the <BR>> > Pardiso solver included.<BR>> ><BR>> > Having done some initial testing with IPOPT it seems to work fine (apart <BR>> > from an apparent one-off initialisation overhead of ~ 1 sec. - I haven't <BR>> > investigated this yet).<BR>> ><BR>> > The comment in the IPOPT documentation is...<BR>> ><BR>> > "Note: Pardiso is included in Intel's MKL library. However, that version <BR>> > does not yet include the changes done by the Pardiso developers to make <BR>> > the linear solver work smoothly with IPOPT."<BR>> ><BR>> > I couldn't tell from this whether the fact that it now compiles, links <BR>> > and runs OK is good confirmation that the required changes are now <BR>> > included in MKL. Or whether the changes were more subtle and that there <BR>> > may still be an issue with certain problems.<BR>> ><BR>> > I would be very grateful for insights into this. It looks promising, <BR>> > anyway;)<BR>> ><BR>> > Graham<BR>> > _________________________________________________________________<BR>> > Be one of the first to try Windows Live Mail.<BR>> > http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d<BR><BR><br /><hr />Be one of the first to try <a href='http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d' target='_new'>Windows Live Mail.</a></body>
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