Re: Enabling my second CPU

From: David O'Brien <obrien_at_freebsd.org>
Date: Wed, 5 May 2004 08:59:18 -0700
On Wed, May 05, 2004 at 10:04:31AM +0200, Eirik Oeverby wrote:
> I've recently changed from an Asus A7M266-D board to a MSI K7D Master-L 
> board, due to the Asus dying on me. I'm running with dual Athlon 1.4ghz 
> CPUs (non-MP, just plain old Athlon CPUs), and with the Asus this was no 
> problem at all. Performance was fine, both CPUs were utilized well, and 
> all was good.
> Now with the MSI board, the BIOS complains on bootup that the CPUs I'm 
> using aren't MP-capable, and that it has disabled one and is running in 
> UNIprocessor mode.

You were very, very lucky this worked at all.  You say "plain old
Athlon", not "Athlon XP".  This implies Thunderbird, which really didn't
support SMP and I'm very surprised it worked at all in the Asus board.
Are you sure you don't mean "Athlon XP" (Palomino or newer)?

The reason your BIOS is complaining is that non-MP Athlon's aren't
guaranteed to work in an SMP configuration.  If you sampled 10 Athlon
XP's of them, I guaranteed some of them wouldn't work in SMP mode.  Athlon
MP CPU's are fully tested, QA'ed, and certified to run *reliably* in SMP
mode and configurations.  If AMD didn't have these checks put into the
BIOS, and you used two XP's that wouldn't work together you'd call AMD
CPU's "crap" and be all pissed.
Received on Wed May 05 2004 - 06:59:25 UTC

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