Joel Koerwer wrote: > Don, that's a great little mini tutorial, exactly what I was hoping for. > I'm looking forward to learning more tricks. > > On an unrelated note, I have an STUArray nbody. I haven't really looked > closely at the chris+dons version, but I suspect they amount to doing > the same thing. I get commensurate runtimes at least. But I'll post it > on the wiki in a while in case there is some optimization I missed. > > On an even more unrelated note, I get slower runtimes with -optc-O3 and > -optc-ffast-math than without. Individually or in tandem. Odd. This is > ghc 6.4.1 and gcc 4.0.3 on a (Banias) Pentium M.
More architecture benchmarking: On a powerbook G4, Joel Koerwer's entry on http://haskell.org/hawiki/NbodyEntry runs faster than dons+chris. And I edited it to make it smaller, but by hoisting 'size' and 'dt' I also made it run quite a bit faster. It now takes 1.7x less time than dons+chris. Don, could you check the speed on your architecture? -- Chris _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
