[Haskell-cafe] GHC performance of 64-bit

[Tomasz Zielonka]

On Sat, Jan 06, 2007 at 10:31:08AM +0000, Duncan Coutts wrote:
> On Fri, 2007-01-05 at 17:51 +0000, Pedro Baltazar Vasconcelos wrote:
> > Athlon XP 2800 (32-bit): 7.98 secs
> > Athlon 64 3800 (64-bit): 10.29 secs
> > This is using GHC 6.6 on the 64-bit machine and 6.4.1 on the 32-bit one.
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

> I would suggest re-running that with GHC 6.6. x86-64 support was only
> really added in GHC 6.4.1 (in 6.4 it only worked for really simple
> programs).

He can only switch to 6.6 on the 32-bit machine, so the difference can
only get bigger :-)

Best regards
Tomasz