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Date: Fri, 31 Aug 2007 18:43:23 -0700
From: "David O'Brien" <obrien@freebsd.org>
To: JoaoBR <joao@matik.com.br>
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Subject: Re: Adding k9 and k10 to bsd.cpu.mk
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On Fri, Aug 31, 2007 at 09:20:30PM -0300, JoaoBR wrote:
> On Friday 31 August 2007 21:07:10 David O'Brien wrote:
> > > opterons are not easy but it is already kind of advanced cpu so
> > > could be
> >
> > Why are Opteron's any harder?
> 
> because all of them are 64bit but some older ones are not SSE3 capable, < 250 
> I guess now but 252 is but not 100% sure

It's not Opteron model # specific - but silicon revision specific.
There are rev C0 model 250's, along with rev CG, and rev E.

Same for athlon64 - older ones don't support SSE3, newer ones do.


> people 'kind of familiarly' with reading manuals and specs are already
> having difficulties here so imagin an average user (unkndefspec) who
> likes to optimize his kernel (his cpu's kernel of course :) )
>
> so as far as there are a cpu options for a freebsd kernel they should
> be understandable so it might be worse thinking well before doing
> (=less support = less questions = less problemas)

BTW, the AMD offically sanctioned spelling for GCC 'march' is "amdfam10"
 
-- 
-- 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"