Might also mean bad alignment of data structures, maybe when marshalling
data between the GHC runtime and the C implementation? If I recall correctly
SSE2 requires 16-byte alignment.
On Thu, Feb 26, 2009 at 5:24 PM, Don Stewart
Alistair.Bayley:
From: haskell-cafe-bounces@haskell.org [mailto:haskell-cafe-bounces@haskell.org] On Behalf Of Roel van Dijk
I replaced the standard random number generated with the one from mersenne-random. On my system this makes the resulting program about 14 times faster than the original. I also made a change to accumulateHit because it doesn't need to count to total. That is already known.
I tried this too, but got a seg fault (!), so I stripped it back to a small test program. This is with mersenne-random, setup configured with -fuse_sse2:
This in the past has always meant: wrong architecture (or GCC can't handle sse2 on your system)
-- Don _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe