[Beowulf] Re: Why Do Clusters Suck?

Stuart Midgley stuart.midgley at anu.edu.au
Tue Mar 22 18:12:17 EST 2005


Of course, you can buy expensive hardware (take our AUD10mil 
Alphaserver SC - based on 127 ES45's for example) and still have every 
CPU replaced, every dimm replaced and every disk replaced over 3 years 
:)  We are still loosing a node disk (10k rpm Ultra SCSI 320 disks) 
roughly every 3-4 days.  Fortunately, our Quadrics has never failed.

Contrast this to our 152 node Dell cluster (single cpu PR350's), which 
has had a couple of disks and a couple of fans fail in 2 years...

Stu.


> For the nodes themselves, you can buy systems with redundant power and
> redundant disk.  You can buy from an system vendor that qualifies
> their hardware much more rigorously than another.  When you buy cheap
> hardware you get cheap hardware.

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