Its gonna be used for computational chemisty , not academic but more private / entrepreneurship. I been doing a lot of research in this area for a while and was hoping to do some more on my own.<br><br><div class="gmail_quote">
On Wed, Dec 3, 2008 at 2:11 AM, Robert G. Brown <span dir="ltr"><<a href="mailto:rgb@phy.duke.edu">rgb@phy.duke.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d">On Tue, 2 Dec 2008, Lombard, David N wrote:<br>
<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
An acoustic concern. A 1U is quite a bit louder than the normal desktop as<br>
(1) they use itty-bitty fans and (b) there's no incentive to make them<br>
quiet, as nobody is expected to have to put up with their screaming...<br>
</blockquote>
<br></div>
A good point. I actually like Greg's suggestion best -- consider<br>
(fewer) 2U nodes instead -- quieter, more robust, cooler. Perhaps four,<br>
but that strongly depends on the kind of thing you are trying to do --<br>
tell us what it is if you can do so without having to kill and we'll try<br>
to help you estimate your communications issues and likely bottlenecks.<br>
For some tasks you are best off getting as few actual boxes as possible<br>
with as many as possible CPU cores per box. For others, having more<br>
boxes and fewer cores per box will be right.<br>
<br>
The reason I like four nodes with at least a couple of cores each is<br>
that if you don't KNOW what you are likely to need, you can find out<br>
(probably) with this many nodes and then "fix" your design if/when you<br>
scale up into production. Otherwise you buy eight single core node (if<br>
they still make single cores:-) and then learn that you would have been<br>
much better off buying a single eight core node. Or vice versa.<br>
<br>
rgb<br>
<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="Ih2E3d">
<br>
-- <br>
David N. Lombard, Intel, Irvine, CA<br>
I do not speak for Intel Corporation; all comments are strictly my own.<br></div><div class="Ih2E3d">
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</blockquote></div><br><br clear="all"><br>-- <br>Malcolm A.B Croucher<br>