On Sun, Feb 13, 2011 at 12:27 PM, Richard Hainsworth <rich...@rusrating.ru> wrote: > Before doing any more work on this benchmarking project, I was wondering if > any one else thinks the effort is worth it.
Assuming that perl6 here == rakudo on parrot, I and others on the parrot dev team would definitely find these helpful. (Be sure to use a parrot built with --optimize) > Although it is early days, it seemed reasonable to start setting up a > framework for benchmarking perl6 algorithms against implementations/releases > and against other languages. Probably also want to include niecza, assuming the same program can run on both rakudo & niecza. > The Alioth shootout is one benchmarking system, with thirteen benchmark > programs. I have converted one benchmark to perl6 (two programs, slightly > different). Gradually working on the remainder. > > The results below compare perl, perl6, ruby, php, and python programs. (I > haven't got java or gcc to work yet). The input data are very small, since > perl6 is still weak. > > Hopefully the table formatting below will come out properly. > > name lang id n size(B) cpu(s) mem(KB) > status load elapsed(s) > nbody python 1 30 1329 0.01 0 0 % 0 > nbody php 2 30 1333 0.01 0 0 % 0 > nbody perl 1 30 1556 0.01 0 0 % 0 > nbody ruby 2 30 1326 0 0 0 % 0 > nbody php 3 30 1240 0.01 0 0 100% 100% > 0.02 > nbody python 4 30 1238 0.02 0 0 0% 100% > 0.02 > nbody php 1 30 1383 0.01 0 0 50% 100% > 0.02 > nbody perl6 2 30 1320 5.41 206776 0 100% 13% > 5.42 > nbody perl6 1 30 1394 5.64 208820 0 32% 89% > 5.68 > > > see http://shootout.alioth.debian.org/ for more info on the algorithms. > > There are many factors that can be considered when benchmarking, including > IO and OS. > > It seemed to me it would be a good idea to fix on some "elegant" form of the > perl6 implementation. By keeping the program the same, it will be possible > to track how developments implementations affect speed/memory size. > > The perl6 program is given below. It still retains the form of the original > perl, the python version is quite different. > > Richard > # The Computer Language Shootout > # http://shootout.alioth.debian.org/ > # > # contributed by Christoph Bauer > # converted into Perl by Márton Papp > # converted to perl6 by Richard Hainsworth > > my $solar-mass = (4 * pi * pi); > my $days-per-year = 365.24; > > # Globals for arrays... Oh well. > # Globals introduced to speed up perl. > # @ns = ( sun, jupiter, saturn, uranus, neptune ) > my @xs = (0, 4.84143144246472090e+00, 8.34336671824457987e+00, > 1.28943695621391310e+01, 1.53796971148509165e+01); > my @ys = (0, -1.16032004402742839e+00, 4.12479856412430479e+00, > -1.51111514016986312e+01, -2.59193146099879641e+01); > my @zs = (0, -1.03622044471123109e-01, -4.03523417114321381e-01, > -2.23307578892655734e-01, 1.79258772950371181e-01); > my @vxs = $days-per-year <<*<< > (0, 1.66007664274403694e-03, -2.76742510726862411e-03, > 2.96460137564761618e-03, 2.68067772490389322e-03); > my @vys = $days-per-year <<*<< > (0, 7.69901118419740425e-03, 4.99852801234917238e-03, > 2.37847173959480950e-03, 1.62824170038242295e-03); > my @vzs = $days-per-year <<*<< > (0, -6.90460016972063023e-05, 2.30417297573763929e-05, > -2.96589568540237556e-05, -9.51592254519715870e-05); > my @mass = $solar-mass <<*<< > (1, 9.54791938424326609e-04, 2.85885980666130812e-04, > 4.36624404335156298e-05, 5.15138902046611451e-05); > > # Almost every iteration is a range, so keep the last index rather than a > count. > my $last = +@xs; > > @vxs[0] = - ( [+] @vxs Z* @mass ) / $solar-mass; > @vys[0] = - ( [+] @vys Z* @mass ) / $solar-mass; > @vzs[0] = - ( [+] @vzs Z* @mass ) / $solar-mass; > > sub advance($dt) > { > my ($mm, $mm2, $j, $dx, $dy, $dz, $distance, $mag); > > for ^$last { > for $_ ^..^ $last -> $j { > $dx = @xs[$_] - @xs[$j]; > $dy = @ys[$_] - @ys[$j]; > $dz = @zs[$_] - @zs[$j]; > $distance = sqrt($dx * $dx + $dy * $dy + $dz * $dz); > $mag = $dt / ($distance * $distance * $distance); > $mm = @mass[$_] * $mag; > $mm2 = @mass[$j] * $mag; > @vxs[$_] -= $dx * $mm2; > @vxs[$j] += $dx * $mm; > @vys[$_] -= $dy * $mm2; > @vys[$j] += $dy * $mm; > @vzs[$_] -= $dz * $mm2; > @vzs[$j] += $dz * $mm; > } > # We're done with planet $_ at this point > # This could be done in a seperate loop, but it's slower > @xs[$_] += $dt * @vxs[$_]; > @ys[$_] += $dt * @vys[$_]; > @zs[$_] += $dt * @vzs[$_]; > } > } > > sub energy > { > my ($dx, $dy, $dz, $distance); > > my $e = 0.0; > for ^$last -> $i { > $e += 0.5 * @mass[$i] * > (@vxs[$i] * @vxs[$i] + @vys[$i] * @vys[$i] + @vzs[$i] * @vzs[$i]); > for $i ^..^ $last { > $dx = @xs[$i] - @xs[$_]; > $dy = @ys[$i] - @ys[$_]; > $dz = @zs[$i] - @zs[$_]; > $distance = sqrt($dx * $dx + $dy * $dy + $dz * $dz); > $e -= (@mass[$i] * @mass[$_]) / $distance; > } > } > return $e; > } > > > multi MAIN( $n ) { > energy.fmt("%.9f").say; > advance(0.01) for ^$n; > energy.fmt("%.9f").say; > } > > multi MAIN('test') { > use Test; > plan *; > > is energy.fmt("%.9f"), -0.169075164, 'energy 0'; > advance(0.01) for ^123; > is energy.fmt("%.9f"), -0.169044806, 'energy 123'; > > done(); > } > > > -- Will "Coke" Coleda
