10 Jun
2010
10 Jun
'10
2:36 p.m.
wasserman.louis:
There are 4 sets of "rankings" so -
http://shootout.alioth.debian.org/u64/program.php?test=threadring&lang=ghc& id=3
Yes, but Haskell used to be doing much better specifically on the u64q, which was why I was surprised.
Oh, indeed, http://shootout.alioth.debian.org/u64q/performance.php?test=threadring Something broke. Simon Marlow described how best to parallelize this problem extensively in: http://www.haskell.org/~simonmar/bib/multicore-ghc-09_abstract.html So I'd suggest doing what he says. In particular, use thread pinning to improve locality. -- Don