AMD64 optimization on FreeBSD 5.4 i386

[Conrad J. Sabatier]

On Mon, 4 Apr 2005 09:35:32 +0200, Bachelier Vincent
<vincent_bachelier at yahoo.fr> wrote:

> Hi, I have a AMD64 and use FreeBSD 5.4 i386.

Why aren't you using the amd64 version of FreeBSD?

> I have set CPUTYPE=k8 to optimize a little for my computer.
> I have seen they set march=athlon-mp when it compile something.

I you were running amd64, you could use CPUTYPE=athlon64.

> Ok, I have see they is a difference between march=k8 and
> march=athlon-mp
> 
> Have a idea ?

Yes, download the ISO for amd64 and install it.  :-)

> Does I compile with march=k8 under cflags ?
> for example: CFLAGS=-O2 -march=k8 -pipe
> 	     CXXFLAGS=$CFLAGS

I think the CXXFLAGS setting is unnecessary, as this will happen by
default.

> Well, what do you think ?

I think you should be running amd64.  :-)

> could I optimize more than CPUTYPE=k8 ?

Yes.  See above.  :-)

Seriously, though, the amd64 version of FreeBSD is quite stable and
usable, and would allow you to take full advantage of your machine's
64-bit architecture.  Why settle for less?

-- 
Conrad J. Sabatier <conrads at cox.net> -- "In Unix veritas"