Charlie Peck wrote:
On Mar 5, 2007, at 10:43 PM, Chris Samuel wrote:
So yes, NFS should be fine. Just don't try and run Gaussian on it. :-)
Ok, I'll bite. We're just starting to support Gaussian on a couple of
small clusters (32 and 64 cores respectively) and we don't have a lot of
experience with it. It looks like there are 3 primary directories, the
software root, the tmp dir, and the molecular system/output files.
Which subset of these shouldn't be accessed via NFS?
Charlie:
Depending upon which links are run, Gaussian can do a fairly good job
of consuming all your I/O bandwidth, and then some. Not all links are
like this, the DFT links seem to be non-IO bound. As soon as you start
spilling integrals to disk, you will see what we mean.
Joe
thanks,
charlie
Charlie Peck
Computer Science, Earlham College
http://cs.earlham.edu
hhtp://cluster.earlham.edu
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