not sure if this applies to all kinds of senarios that clusters are used in but isnt the more ram you have the better?<br><br>
<div><span class="gmail_quote">On 6/30/08, <b class="gmail_sendername">Vincent Diepeveen</b> <<a href="mailto:diep@xs4all.nl">diep@xs4all.nl</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Toon,<br><br>Can you drop a line on how important RAM is for weather forecasting in latest type of calculations you're performing?<br>
<br>Thanks,<br><span class="sg">Vincent</span>
<div><span class="e" id="q_11adb27a122088b1_2"><br><br><br>On Jun 30, 2008, at 8:20 PM, Toon Moene wrote:<br><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Jim Lux wrote:<br><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Yep. And for good reason. Even a big DoD job is still tiny in Nvidia's scale of operations. We face this all the time with NASA work. Semiconductor manufacturers have no real reason to produce special purpose or customized versions of their products for space use, because they can sell all they can make to the consumer market. More than once, I've had a phone call along the lines of this:<br>
"Jim: I'm interested in your new ABC321 part."<br>"Rep: Great. I'll just send the NDA over and we can talk about it."<br>"Jim: Great, you have my email and my fax # is..."<br>"Rep: By the way, what sort of volume are you going to be using?"<br>
"Jim: Oh, 10-12.."<br>"Rep: thousand per week, excellent..."<br>"Jim: No, a dozen pieces, total, lifetime buy, or at best maybe every year."<br>"Rep: Oh...<dial tone>"<br>{Well, to be fair, it's not that bad, they don't hang up on you..<br>
</blockquote><br>Since about a year, it's been clear to me that weather forecasting (i.e., running a more or less sophisticated atmospheric model to provide weather predictions) is going to be "mainstream" in the sense that every business that needs such forecasts for its operations can simply run them in-house.<br>
<br>Case in point: I bought a $1100 HP box (the obvious target group being teenage downloaders) which performs the HIRLAM limited area model *on the grid that we used until October 2006* in December last year.<br><br>It's about twice as slow as our then-operational 50-CPU Sun Fire 15K.<br>
<br>I wonder what effect this will have on CPU developments ...<br><br>-- <br>Toon Moene - e-mail: <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:toon@moene.indiv.nluug.nl" target="_blank">toon@moene.indiv.nluug.nl</a> - phone: +31 346 214290<br>
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands<br>At home: <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://moene.indiv.nluug.nl/~toon/" target="_blank">http://moene.indiv.nluug.nl/~toon/</a><br>
Progress of GNU Fortran: <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://gcc.gnu.org/ml/gcc/2008-01/" target="_blank">http://gcc.gnu.org/ml/gcc/2008-01/</a>msg00009.html<br></blockquote><br>_______________________________________________<br>
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</span></div></blockquote></div><br><br clear="all"><br>-- <br>Jonathan Aquilina