On Thu, Jan 21, 2010 at 4:15 PM, Mark Hahn <h...@mcmaster.ca> wrote: >> Otherwise, performance is great using infiniband especially to the >> stripes. > > I find that people have greatly differing expectations, so what does "great" > mean to you?
The stripe is across 5 machines and I'm getting about 3 times speedup on writes and 2.5 times speedup on reads vs the same tests going directly to the XFS filesystem on a single node. Not hitting anything close to the peak interconnect bandwidth, about 4gbps on writes and 7gbps on reads. > > I would expect to achieve ~90% of the peak bandwidth of the interconnect, > for instance, assuming enough and fast-enough storage targets. this is easy > enough to achieve using Lustre in my experience (albeit I haven't really > tried eg QDR IB.) What about your setup above? What sort of speedup are you getting vs a single node, assuming your (storage) nodes are homogeneous in terms of hardware. _______________________________________________ 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
