Dear Mark and the List, The head node is about a terabyte of raid10, with home directories and application directories NFS mounted to the cluster. I am still tuning NFS, 16 daemons now) and, of course, the head node had 1Gb link to my intranet for remote cluster access.
The 10Gb link to the switch uses cx4 cable. It did not cost too much and I only needed two meters of it. 10 Gb is very nice and makes me lust for inexpensive low latency 10Gb switches... but I'll wait for the marketplace to develop. Engineering calculations (Fluent, Abacus) can fill the 10 Gb link for 5 to 15 minutes. But that is better than the 20-40 minutes they used to use. I suspect they are checkpointing and restarting their MPI iterations. ------ Sincerely, Tom Pierce Mark Hahn <[EMAIL PROTECTED]> 02/21/2007 09:48 AM To Thomas H Dr Pierce <[EMAIL PROTECTED]> cc Beowulf Mailing List <beowulf@beowulf.org> Subject Re: [Beowulf] anyone using 10gbaseT? > I have been using the MYRICOM 10Gb card in my NFS server (head node) for > the Beowulf cluster. And it works well. I have a inexpensive 3Com switch > (3870) with 48 1Gb ports that has a 10Gb port in it and I connect the > NFS server to that port. The switch does have small fans in it. that sounds like a smart, strategic use. cx4, I guess. is the head node configured with a pretty hefty raid (not that saturating a single GB link is that hard...) thanks, mark hahn.
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