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Date:      Fri, 31 Aug 2007 07:20:32 -0700
From:      "David O'Brien" <obrien@freebsd.org>
To:        =?unknown-8bit?Q?Bj=F6rn_K=F6nig?= <bkoenig@cs.tu-berlin.de>
Cc:        Roman Divacky <rdivacky@freebsd.org>, pluknet <pluknet@gmail.com>, freebsd-current@freebsd.org
Subject:   Re: Adding k9 and k10 to bsd.cpu.mk
Message-ID:  <20070831142032.GD79097@dragon.NUXI.org>
In-Reply-To: <50152.2001:6f8:101e:0:20e:cff:fe6d:6adb.1188416964.squirrel@webmail.alpha-tierchen.de>
References:  <-3502020561049594852@unknownmsgid> <a31046fc0708291203s3e71d603ka7b34cc320a8166a@mail.gmail.com> <20070829191310.GA50909@freebsd.org> <50152.2001:6f8:101e:0:20e:cff:fe6d:6adb.1188416964.squirrel@webmail.alpha-tierchen.de>

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On Wed, Aug 29, 2007 at 09:49:24PM +0200, Bjrn Knig wrote:
> Roman Divacky wrote:
> 
> > I dont think the name matters THAT MUCH, the important thing is
> > to support the newer CPUs with FreeBSD infrastructure... name
> > it "blahblah" if you wish
> 
> I agree.
> 
> Intel's first Pentium 4 with SSE3 is called "prescott". We could use
> "venice" analogously to represent SSE3-capable Athlon64 CPUs.

No!  NO!  AMD core names does not mean the same as Intel ones.
Look folks, there is a clear way for this - the CPUID family.

K8 is Family 0Fh, the next major architecture is Family 10h.  *THAT* is
what is important to software optimization.  All the various AMD K8 core
names (Italy, Venice, San Diego, Manchester, ...)[*].  *Possibly* the
"hammer" core names, could be very slightly useful, but I'm not convinced
at that.

[*] not even the AMD's own software optimization folks know or use these
marketing dreamed up names.  The differences between these "city" core
names is important to the fab process folks, and the overclocking crowd.
 
-- 
-- David  (obrien@FreeBSD.org)
Q: Because it reverses the logical flow of conversation.
A: Why is top-posting (putting a reply at the top of the message) frowned upon?
Let's not play "Jeopardy-style quoting"



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