We've actually noticed the opposite results here with OS X 10.4 vs. Linux as far as HPL goes. I don't have the numbers on hand, but Linux was notably faster with HPL over both GigE and Myrinet. In fact the numbers for Colsa (our partner) in the Top500 were achieved using Yellow Dog instead of OS X. That being said if you have a moment I have a few questions:
1.) What libraries were you using? Did you use Goto's? 2.) Which compiler(s) did you use? 3.) What sort of setup do you have? Diskless or not and so on. Brady Catherman wrote: > Unfortunately BPS has an annoying habit of overwriting the test output > files every time it is run regardless of which test you actually run. > I didn't notice this when I was doing my initial stuff on RedHat so I > lost all the other tests results from BPS. I have better tests of the > hardware since then. We ran HPL on the PowerPC cluster running both > Gentoo 2005.1 and Mac OS 10.4 (mac os was ~ %5 faster on average). I > ran IOZone on our XRaid using HFS+ under Mac OS, and Reiser, xfs, jfs, > and ext3 under Gentoo for PPC64. > > I also ran tests using Mr Bayes, ClustalW, MPIBench, and several other > in house tests that I had available but all of these tests where > either inconclusive or failed to demonstrate any difference between > the platforms. > > I will be doing a bunch of this again here in a bit in order to get > data on our new OS build we are putting into production =) > > > On Apr 11, 2006, at 6:20 PM, Brandon Edens wrote: > >>> Yeah, from the numbers it looks as if it would be dependent on the >>> purpose of the cluster whether OS X or Gentoo would do better. On ppc, >>> Gentoo does poorly on the first two benchmarks and also on context >>> switching. On x86, the first two are more comparable with RH, but the >>> others, Gentoo has a small to large advantage over RH, just as on ppc. >> >> First and second benchmarks are dhrystone and whetstone, synthetic >> benchmarks. >> I'd be wary of these types of benchmarks; they've been cheated >> before. I'd like >> to see some real-world computation benchmarks. >> >> Brandon Edens >> > > [EMAIL PROTECTED] mailing list > > -- Justin Bronder University of Maine, Orono Advanced Computing Research Lab 20 Godfrey Dr Orono, ME 04473 www.clusters.umaine.edu Mathematics Department 425 Neville Hall Orono, ME 04469 -- gentoo-cluster@gentoo.org mailing list
