<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
You can use HSL_MA86 using the latest svn trunk, but a crucial bug
fix just missed making the last stable release. My current
performance results indicate it is only faster than MA57 on larger
problems, and also suffers from not being bit-compatible so may find
different local optima of a non-convex problem when run multiple
times.<br>
<br>
You can link MA57 against multi-threaded BLAS such as the Intel MKL.
This often gives a limited (but free) speedup, especially on
larger/denser problems.<br>
<br>
I've also got a prototype interface to HSL_MA97 that *is*
bit-compatible (so you get repeatable results), and faster on small
problems than HSL_MA86 (though 20-30% slower and more memory hungry
on very large problems). Drop me a direct email if you want a copy.<br>
<br>
Jonathan.<br>
<br>
On 27/01/12 05:28, Andreas Voegel wrote:
<blockquote
cite="mid:CAOOxFBrNN0vo42GzfOscAzSJPgF+EW6vLPZNYmYAXmbsA7om2w@mail.gmail.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
Dear Ipopt Community,
<div><br>
</div>
<div>Looking through the Ipopt source, I noticed support code for
the HSL MA86 solver. This interface is not mentioned in the
documentation, however. A post from August seems to indicate
that the use of MA86 was not recommended, at the time. Is this
still the case?</div>
<div><br>
</div>
<div>Best regards,</div>
<div>Andreas</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Ipopt mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Ipopt@list.coin-or.org">Ipopt@list.coin-or.org</a>
<a class="moz-txt-link-freetext" href="http://list.coin-or.org/mailman/listinfo/ipopt">http://list.coin-or.org/mailman/listinfo/ipopt</a>
</pre>
</blockquote>
<br>
<br>
<p>--
<BR>Scanned by iCritical.
</p><br>
</body>
</html>