On Dec 3, 2008, at 8:25 AM, malcolm croucher wrote:
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.
That's most interesting, if i google for your name i just get hits in
the financial world. How's that possible?
Vincent
On Wed, Dec 3, 2008 at 2:11 AM, Robert G. Brown <[EMAIL PROTECTED]>
wrote:
On Tue, 2 Dec 2008, Lombard, David N wrote:
An acoustic concern. A 1U is quite a bit louder than the normal
desktop as
(1) they use itty-bitty fans and (b) there's no incentive to make them
quiet, as nobody is expected to have to put up with their screaming...
A good point. I actually like Greg's suggestion best -- consider
(fewer) 2U nodes instead -- quieter, more robust, cooler. Perhaps
four,
but that strongly depends on the kind of thing you are trying to do --
tell us what it is if you can do so without having to kill and
we'll try
to help you estimate your communications issues and likely
bottlenecks.
For some tasks you are best off getting as few actual boxes as
possible
with as many as possible CPU cores per box. For others, having more
boxes and fewer cores per box will be right.
The reason I like four nodes with at least a couple of cores each is
that if you don't KNOW what you are likely to need, you can find out
(probably) with this many nodes and then "fix" your design if/when you
scale up into production. Otherwise you buy eight single core node
(if
they still make single cores:-) and then learn that you would have
been
much better off buying a single eight core node. Or vice versa.
rgb
--
David N. Lombard, Intel, Irvine, CA
I do not speak for Intel Corporation; all comments are strictly my
own.
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Robert G. Brown Phone(cell): 1-919-280-8443
Duke University Physics Dept, Box 90305
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Web: http://www.phy.duke.edu/~rgb
Book of Lilith Website: http://www.phy.duke.edu/~rgb/Lilith/Lilith.php
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--
Malcolm A.B Croucher
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