We're talking about this code, right? http://shootout.alioth.debian.org/u32/program.php?test=mandelbrot&lang=racket&id=2
It is already unsafe, I think? Robby On Fri, Jun 18, 2010 at 8:26 AM, Vincent St-Amour <stamourv at ccs.neu.edu> wrote: > At Fri, 18 Jun 2010 08:18:14 -0400, > Sam Tobin-Hochstadt wrote: >> I submitted a request to the computer language shootout to rename PLT >> to Racket. ?The following message shows the difference in performance >> between 4.2.5 and 5.0 - it's probably worth taking a look at the >> discrepancies. > > The discepancies are on the mandelbrot benchmark. The same > discrepancies can be observed between different runs of the benchmark > on 5.0, even using the same compiled bytecode of the benchmark; about > 10-20% of the time, for no apparent reason, that benchmark would take > twice as long as usual. I observed this random behavior on 5.0, but I > don't know if it appeared on 4.2.5 as well. > > That random behavior seems to be linked to the use of safe flonum > operations (fl+ and co.) since changing the benchmark to use either > generic arithmetic operations or unsafe float operations makes the > running times of the benchmark consistent. I told Matthew about that. > > I've been working on typed versions of these benchmarks, and some are > faster than the untyped versions (including the mandelbrot benchmark, > whose typed version is ~30% faster and does not show the random > behavior discussed above). I'll push them later today, and some could > be worth using on the shootout. > > Vincent > _________________________________________________ > ?For list-related administrative tasks: > ?http://lists.racket-lang.org/listinfo/dev >
