Re: No "last core parallel slowdown" on OS X

2009-04-19 Thread Tyson Whitehead
On April 18, 2009 16:46:44 Daniel Peebles wrote: > That looks great! I wonder what about Mac OS leads to such good > performance... > > Now if only we could get a nice x86_64-producing GHC for Mac OS too, I > could use all my RAM and the extra registers my Mac Pro gives me :) I was a bit surprised

Re: No "last core parallel slowdown" on OS X

2009-04-19 Thread Manuel M T Chakravarty
Dave Bayer: In that paper, they routinely benchmark N-1 cores on an N core Linux box, because of a noticeable falloff using the last core, which can do more harm than good. I had confirmed this on my four core Linux box, but was puzzled that my two core MacBook showed no such falloff. Hey,