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<p class=MsoNormal>I'm a new member to this list, but the research group that I
work for has had a working cluster for many years. I am now looking at
upgrading our current configuration. <span style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Go for a new cluster any time. Upgrading is fraught with
pitfalls – keep that old cluster running till it dies, but look at a fresh new
machine.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nehalem is around now, and you can get a lot of power in a
single node, not to mention GPUs.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mixing modern multi-core hardware with an older OS release which
worked with those old disk drivers and Ethernet drivers will be a nightmare.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal>I was wondering if anyone has actual experience with running
more than one node from a single power supply. Even just two boards on one PSU
would be nice. We will be using barely 200W per node for 50 nodes and it just
seems like a big waste to buy 50 power supply units. I have read the old posts
but did not see any reports of success.<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Look at the Supermicro twin systems, they have two motherboards
in 1U or four motherboards in 2U.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I believe HP have similar. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Or of course any of the blade chassis – Supermicro, HP, Sun and
dare I say it SGI.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>On a smaller scale you could look at the ‘personal
supercomputers’ from Cray and SGI.<o:p></o:p></span></p>
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