I now ran bonnie++ but have trouble figuring out if my perf. stats are up to the mark or not. My original plan was to only estimate the IOPS capabilities of my existing storage setup. But then again I am quite ignorant about the finer nuances. Hence I thought maybe I should post the stats. here and if anyone has comments I'd very much appreciate hearing them. In any case, maybe my stats help someone else sometime! I/O stats on live HPC systems seem hard to find.
Data posted below. Since this is an NFS store I ran bonnie++ from both a NFS client compute node and the server. (head node) Server side bonnie++ http://dl.getdropbox.com/u/118481/io_benchmarks/bonnie_op.html Client side bonnie++ http://dl.getdropbox.com/u/118481/io_benchmarks/bonnie_op_node25.html Caveat: The cluster was in production so there is a chance of externalities affecting my data. (am trying it hard to explain why some stats seem better on the client run than the server run) Subsidary Goal: This setup had 23 clients for NFS. In a new cluster that I am setting up we want to scale this up about 250 clients. Hence want to estimate what sort of performance I'll be looking for in the Storage. (I've found most conversations with vendors pretty non-productive with them weaving vague terms and staying as far away from quantitative estimates as is possible.) (Other specs: Gigabit ethernet. RAID5 array of 5 total SAS 10k RPM disks. Total storage ~ 1.5 Terabyte; both server and client have 16GB RAM; Dell 6248 switches. Port bonding on client servers) -- Rahul _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
