<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>Re: [Beowulf] recommendations for cluster upgrades</title>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<meta http-equiv="Content-Style-Type" content="text/css">
<style type="text/css"><!--
body {
margin: 5px 5px 5px 5px;
background-color: #ffffff;
}
/* ========== Text Styles ========== */
hr { color: #000000}
body, table /* Normal text */
{
font-size: 9pt;
font-family: 'Courier New';
font-style: normal;
font-weight: normal;
color: #000000;
text-decoration: none;
}
span.rvts1 /* Heading */
{
font-size: 10pt;
font-family: 'Arial';
font-weight: bold;
color: #0000ff;
}
span.rvts2 /* Subheading */
{
font-size: 10pt;
font-family: 'Arial';
font-weight: bold;
color: #000080;
}
span.rvts3 /* Keywords */
{
font-size: 10pt;
font-family: 'Arial';
font-style: italic;
color: #800000;
}
a.rvts4, span.rvts4 /* Jump 1 */
{
font-size: 10pt;
font-family: 'Arial';
color: #008000;
text-decoration: underline;
}
a.rvts5, span.rvts5 /* Jump 2 */
{
font-size: 10pt;
font-family: 'Arial';
color: #008000;
text-decoration: underline;
}
span.rvts6
{
font-weight: bold;
color: #800000;
}
a.rvts7, span.rvts7
{
color: #0000ff;
text-decoration: underline;
}
/* ========== Para Styles ========== */
p,ul,ol /* Paragraph Style */
{
text-align: left;
text-indent: 0px;
padding: 0px 0px 0px 0px;
margin: 0px 0px 0px 0px;
}
.rvps1 /* Centered */
{
text-align: center;
}
--></style>
</head>
<body>
<p>Hallo Rahul,</p>
<p><br></p>
<p>where are you "based"? If you are in Europe we (ClusterVision) can definitely help you out with benchmarks and quotes... </p>
<p><br></p>
<p>Go to <a class=rvts7 href="www.clustervision.com">www.clustervision.com</a> for further information...</p>
<p><br></p>
<p>Jan</p>
<p><br></p>
<p>Dienstag, 12. Mai 2009, meintest Du:</p>
<p><br></p>
<p><span class=rvts6>RN> I'm currently shopping around for a cluster-expansion and was shopping</span></p>
<p><span class=rvts6>RN> for options. Anybody out here who's bought new hardware in the recent</span></p>
<p><span class=rvts6>RN> past? Any suggestions? Any horror stories?</span></p>
<p><br></p>
<p><span class=rvts6>RN> We've been using Dell SC1435's with Quad-Core AMD 2354 Opterons @</span></p>
<p><span class=rvts6>RN> 2.2GHz. 16 Gig RAM.</span></p>
<p><br></p>
<p><span class=rvts6>RN> Any new-cutting edge stuff I ought to be asking my vendors to put into</span></p>
<p><span class=rvts6>RN> the quotes? I already have gigabit bonded backbones and don't think we</span></p>
<p><span class=rvts6>RN> have the financial muscle to upgrade to Myrinet or Infiniband yet. In</span></p>
<p><span class=rvts6>RN> the interest of homogeniety and not wanting to have dual trees of</span></p>
<p><span class=rvts6>RN> executibles I might be tempted to stick with AMDs unless there is</span></p>
<p><span class=rvts6>RN> compelling temptation otherwise.</span></p>
<p><br></p>
<p><span class=rvts6>RN> I am already looking at the CPU benchmarks on the Intel/AMD websites</span></p>
<p><span class=rvts6>RN> but they can sometimes be misleading / misrepresenting other than the</span></p>
<p><span class=rvts6>RN> obvious glaring conflict of interest. I rather trust first-hand</span></p>
<p><span class=rvts6>RN> anecdotal evidence from you guys actually administering them for</span></p>
<p><span class=rvts6>RN> scientific applications. Unless there is a good third party, relevant</span></p>
<p><span class=rvts6>RN> database?</span></p>
<p><br></p>
<p><span class=rvts6>RN> For some reason the top500 sublists seem skewed to prefer the Intel</span></p>
<p><span class=rvts6>RN> Xeons. Why so few Opterons or any other AMD hardware? Just curious if</span></p>
<p><span class=rvts6>RN> this is driven by technological inferiority of only a marketing</span></p>
<p><span class=rvts6>RN> effect. My vendor seems to be trying to steer me towards an Intel</span></p>
<p><span class=rvts6>RN> Nehalem or Clovertown for whatever reasons good or bad.</span></p>
<p><br></p>
<p><span class=rvts6>RN> Ultimately of course, it might be best if I just got to benchmark my</span></p>
<p><span class=rvts6>RN> very own application on these CPUs before I bought them. But that's</span></p>
<p><span class=rvts6>RN> just wishing I guess!</span></p>
<p><br></p>
<p><br></p>
<p><br></p>
<p><br></p>
<p>Bye Jan </p>
<br />--
<br />This message has been scanned for viruses and
<br />dangerous content by
<a href="http://www.mailscanner.info/"><b>MailScanner</b></a>, and is
<br />believed to be clean.
</body></html>