[Beowulf] large scratch space on cluster

Jörg Saßmannshausen jorg.sassmannshausen at strath.ac.uk
Tue Sep 29 07:09:13 PDT 2009

Dear all,

I was wondering if somebody could help me here a bit.
For some of the calculations we are running on our cluster we need a 
significant amount of disc space. The last calculation crashed as the ~700 GB 
which I made available were not enough. So, I want to set up a RAID0 on one 8 
core node with 2 1.5 TB discs. So far, so good.

However, I was wondering whether it does make any sense to somehow 'export' 
that scratch space to other nodes (4 cores only). So, the idea behind that 
is, if I need a vast amount of scratch space, I could use the one in the 8 
core node (the one I mentioned above). I could do that with nfs but I got the 
feeling it will be too slow. Also, I only got GB ethernet at hand, so I 
cannot use some other networks here. Is there a good way of doing that? Some 
words like i-scsi and cluster-FS come to mind but to be honest, up to now I 
never really worked with them.

Any ideas?

All the best


Jörg Saßmannshausen
Research Fellow
University of Strathclyde
Department of Pure and Applied Chemistry
295 Cathedral St.
G1 1XL

email: jorg.sassmannshausen at strath.ac.uk
web: http://sassy.formativ.net

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