It just so happens that the following link uses FreeBSD as the OS, but  
you should be able to easily adapt this to linux:
http://blizzard.rwic.und.edu/~nordlie/miniwulf/

HTH

On Nov 19, 2008, at 1:44 PM, Mike Miller wrote:

> We are thinking about putting together a cluster of maybe 10 machines,
> presumably using GNU/Linux.  Do any of you have experience with this?
>
> Some of the things I'm wondering about include the appropriate
> configuration of machines -- isn't it better in terms of cost/ 
> benefit to
> buy fewer dual quad-core machines than more single CPU machines,
> especially if the jobs are not very memory-instensive?
>
> We certainly want to use shared disks, but is there any problem with
> booting all the computers from the same network drive?  That seems  
> like a
> good idea to me rather than to have separate HDDs in the machines,  
> but I'm
> not sure how it is done.
>
> What free software is available for managing jobs, e.g., batch  
> queuing?
>
> FYI ... The idea is to use these machines for our genetic analyses --
> maybe 600,000 SNPs on 7,500 people, but this mostly consists of  
> running
> one SNP at a time on some collection of traits.  I don't think the  
> memory
> requirements are too great unless we try to load a lot of the data at
> once.
>
> Mike
>
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---
Eric Crist