John Hearns wrote: > 2009/10/4 Tomislav Maric <tomislav.ma...@gmx.com>: >> >> No, the nodes are diskless. I plan to scale the cluster and 1TB of >> storage is quite enough, even if I use 6 nodes, or 2x6 nodes. That's >> actually what I know from my small experience in running CFD codes on 96 >> cores cluster. > 1 Tbyte? Are you sure... depends on your workload of course, but I > would plan for a bit more!
Yes, definitely, I'm removing the results after postprocessing, and I'm the only user. :) For three nodes, it will be more than enough, but after scaling and with adding more users, I'll definitely need more. > > That's the reason for thinking about RAID in the first >> place: create stable and good performing centralized storage for the >> future number of the nodes (i.e. 12 nodes with 4 cores and 16 GB of RAM >> each). > That's a good policy. > You should be looking at running one benchmark case, and getting as > much information from it as possible - ie. how often it writes a > solution file, how big that file is, and how long it takes. That's the plan, I just need to get it to work first. ;) > > It might definitely be worth looking at a parallel filesystem also - > ie. keep your main storage on a 'conventional' RAID and have a few > Tbytes of scratch (temporary) storage on the faster filesystem for the > solution files. OK, thank you very much, I'll keep that in mind: I'll leave some space on the disks for that. Best regards, Tomislav _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
