<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 08/04/2014 02:47 PM, Jim Ianelli -
NOAA Federal wrote:<br>
<br>
I found that there is a higher level lapack routine which works
just like the ADMB solve.<br>
<br>
You can see how simple the interface with ADMB becomes.<br>
In linux all you need is an include file and to link with two
libraries.<br>
<br>
<br>
</div>
<blockquote
cite="mid:CAOzM52z=MQTpVxhUowopZqSR73ts3cwEFrQ7tdsGYdoS-=LvcQ@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_default" style="font-family:'trebuchet
ms',sans-serif">Seems like a worthwhile enterprise. </div>
<div class="gmail_default" style="font-family:'trebuchet
ms',sans-serif"><br>
</div>
<div class="gmail_default" style="font-family:'trebuchet
ms',sans-serif">Looking at the site there are a number of
interesting aspects of OpenBlas that could help with ideas for
the Foundation, not least of which is their balance sheet and
funding model:</div>
<div class="gmail_default" style="font-family:'trebuchet
ms',sans-serif"><br>
</div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif"><a moz-do-not-send="true"
href="https://docs.google.com/spreadsheet/ccc?key=0AghkTjXe2lDndE1UZml0dGpaUzJmZGhvenBZd1F2R1E&usp=sharing#gid=0">https://docs.google.com/spreadsheet/ccc?key=0AghkTjXe2lDndE1UZml0dGpaUzJmZGhvenBZd1F2R1E&usp=sharing#gid=0</a></font><br>
</div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif"><br>
</font></div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif">also hadn't heard of:</font></div>
<div class="gmail_default" style="">
<font face="trebuchet ms, sans-serif"><a
moz-do-not-send="true"
href="https://www.bountysource.com/faq">https://www.bountysource.com/faq</a><br>
</font></div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif">before, looks like something of interest.</font></div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif"><br>
</font></div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif">also an aside but a useful git-branching
model...: <a moz-do-not-send="true"
href="http://nvie.com/files/Git-branching-model.pdf">http://nvie.com/files/Git-branching-model.pdf</a></font></div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif"><br>
</font></div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif">so back to the question, how can we as a
community help with the interface work? I suppose steps
might be something like:</font></div>
<div class="gmail_default" style="">
<ol>
<li><font face="trebuchet ms, sans-serif">pick some example
function sets</font></li>
<li><font face="trebuchet ms, sans-serif">map the variable
types appropriately (so they will work with ADMB</font></li>
<li><font face="trebuchet ms, sans-serif">write adjoint code
for dvar functions </font><span
style="font-family:'trebuchet ms',sans-serif">(?) </span></li>
<li><font face="trebuchet ms, sans-serif">test against
current ADMB implmentations</font></li>
<li><font face="trebuchet ms, sans-serif">...</font></li>
</ol>
<div><font face="trebuchet ms, sans-serif">thanks for the
interest dave.</font></div>
<div><font face="trebuchet ms, sans-serif"><br>
</font></div>
<div><font face="trebuchet ms, sans-serif">jim</font></div>
</div>
<div class="gmail_default" style=""><font face="trebuchet ms,
sans-serif"><br>
</font></div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Mon, Aug 4, 2014 at 12:31 PM, dave
fournier <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:davef@otter-rsch.com" target="_blank">davef@otter-rsch.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">I wonder
if there is any interest in doing a bit of work to interface
some of the common<br>
function like ludecomp and choleski decomp with the openblas
versions.<br>
<br>
this is not too difficult once one figures out the boring
stuff like the fact that matrices are strored<br>
by column in contiguous arrays.<br>
<br>
we are now looking at ever larger problems. I compared the
admb lu decomp of a 2,000x2,000 matrix<br>
from numerical recipes with the openblas version.<br>
<br>
Time for openblas lu decomp 172.05 ms<br>
Time for numerical recipes lu decomp 22102.9 ms<br>
<br>
which is about 125 times faster<br>
_______________________________________________<br>
Developers mailing list<br>
<a moz-do-not-send="true"
href="mailto:Developers@admb-project.org" target="_blank">Developers@admb-project.org</a><br>
<a moz-do-not-send="true"
href="http://lists.admb-project.org/mailman/listinfo/developers"
target="_blank">http://lists.admb-project.org/mailman/listinfo/developers</a><br>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<p><font face="trebuchet ms, sans-serif"><a
moz-do-not-send="true"
name="SafeHtmlFilter_SafeHtmlFilter_SafeHtmlFilter_SafeHtmlFilter_SafeHtmlFilter_SafeHtmlFilter__MailAutoSig">James
Ianelli<br>
</a>NMFS/NOAA Building 4<br>
7600 Sand Pt Way NE<br>
Seattle WA 98115</font></p>
<p><font face="trebuchet ms, sans-serif"> <span title="Call
with Google Voice">206 526 6510</span></font></p>
<p>Visit the ADMB project <a moz-do-not-send="true"
href="http://admb-project.org/"
style="color:rgb(17,85,204)" target="_blank">http://admb-project.org/</a><font
face="trebuchet ms, sans-serif"><span title="Call with
Google Voice"><br>
</span></font></p>
</div>
</div>
</blockquote>
<br>
</body>
</html>