[Beowulf] PVFS on 80 proc (40 node) cluster
jcandy at san.rr.com
Sat Oct 30 21:14:43 PDT 2004
>>Does anyone have experience with PVFS on a cluster
>>in the range of 80 processors (40 dual nodes with
>>I am considering this over the usual NFS-master
>>node stup since we expect to multiple users/jobs
> on the one hand it sounds interesting. I would fear that in a cluster (where
> each node should do heavy calculations and use the own disk for local scratch
> data) the performance will be worse than a dedicated file server with a RAID.
> What programs will your cluster run and how are the users submitting the jobs?
- the program is a large physics code that does I/O
(200KB or less) every 10 to 60 sec. Every 10min or
so, a 100MB file is written.
- users will submit with PBS (typically, I expect <= 3
jobs to run concurrently).
- I want a *single* filesystem, so no local scratch
will be used.
Are you in favour of a single master with a RAID
filesystem, NFS mounted by all nodes? I wonder
what fraction of systems now use this scheme.
Thanks for your input.
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