Performance on amd64
simonmar at microsoft.com
Tue Jul 5 07:39:04 EDT 2005
On 05 July 2005 10:38, John Skaller wrote:
> Can someone comment on the Debian package for Ubuntu Hoary
> providing ghc-6.2.2 with binary for amd64?
You're probably running an unregisterised build, which is going to be
generating code at least a factor of 2 slower than a registerised build.
You can get an up to date snapshot of 6.4.1 for Linux/x86_64 here:
This build is registerised, but doesn't have the native code generator.
> I'm asking because I'm unexpectedly getting really bad
> performance as you can see here:
> and here:
> These links are unstable, this one should always have
> the latest results:
> The compilation is using:
> ghc -O3 -fvia-C -optc -O3
> which can probably be tweaked, any advice on that appreciated.
I hope you're not going to conclude *anything* based on the performance
of ackermann and tak! :-)
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