Jeff,
In the x86 based world, and in the Alpha world as far as I understand,
you are basically asking to create a freak... it just doesn't work.
On the other hand, it is possible to do this with some other computer
architectures. The problem is that those architectures (SGI's Origin
series comes to mind right off) are NOT Commodity parts, and are
VERY expensive. However, if you want to have a 300 MHz MIPS R12K
node with 195 MHz MIPS R10K boards, we could talk about how to do it
(it is possible, but not in a single insert module... and if you don't
understand what I just said, that's fine, if you don't understand it,
you probably don't need to.... Origins are modern Supercomputers).
Note that Linux does run on the MIPS architecture, so we're still
talking something you might be interested in discussing here,
though I believe that IRIX is somewhat better for MIPs at this time
(more refined implementation, it's been around a bit longer). As
a pedantic aside, don't be confused when talking about "slow" CPU
speeds on these puppies... 300MHz MIPS >> 300 MHz x86, if for
nothing else than that it's a 64 bit superscalar CPU.
So, in simple terms: you cannot mix and match processor speeds
with ANY existing x86 based architecture/chipset combination. You
can mix the different speed processors, though... you just would end
up underclocking one down to the slowest of the multiple CPUs. So,
in your example, you would end up with two PIII-450s at a 4.5
multiplier on a 100 MHz FSB.
Bill Ward
-----Original Message-----
From: Jeff Graves [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 11, 2000 6:17 PM
To: '[EMAIL PROTECTED]'
Cc: recipient.list.not.shown; @nswcphdn.navy.mil
Subject: RE: OT: Dual CPUs
I wasn't referring to 386s and 486s, i guess i was basically
asking if they made motherboards with two mulitplier juimpers,
one per processor. That way if you had, say two pIIIs, one at 450
and one at 500 you'd have a 100Mhz bus with one mulitplier at
4.5x and the other at 5x. I wasn't sure if the dual processor
motherboards had only one multiplier or two.
Jeff
-----Original Message-----
From: Gustav Schaffter [SMTP:[EMAIL PROTECTED]]
Sent: Tuesday, January 11, 2000 4:03 PM
To: [EMAIL PROTECTED]
Subject: Re: OT: Dual CPUs
Jeff,
The CPU speed will traditionally (i.e. 386 & 486) be controlled
by the
crystal on the motherboard. The CPU will follow. If you have a
motherboard that supports multiple processors of these types, it
will
run the processors at the same speed whatever you do. OTOH, 386
and 486
are physically different. You probably won't find a motherboard
that
will do this. Don't even know if there were any motherboards that
could
keep multiple 386s, being the same processors. I'm not even sure
about
the 486s.
'Modern' processors are somewhat blocked. They have a multiplier
built
in so that they will always execute at a multiple of the bus
speed.
Overclocking of these processors is done by changing the bus
speed. I
guess that in theory you could run a PIII550 and a PIII500 in the
same
PC, but I haven't tried it. I wouldn't be surprised if it failed,
though.
Best regards
Gustav
Jeff Graves wrote:
>
> i was just reading this thread and started wondering, if you
have
> a machine with dual CPUs, do they need to be the same clock
speed
> or can you have say, a 366 and a 433?
>
> -----Original Message-----
> From: Steve Borho [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, January 11, 2000 11:27 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Anyone know of a console Dual-CPU monitor
(like Top
> for Dual CPU's)?
>
> On Tue, Jan 11, 2000 at 09:26:32AM -0600, Steven Hildreth
wrote:
> > Hi, wanting to find a utility to show me the activity for a
> dual cpu
> > server.
> >
> > If "top" will do this, how?
> >
> > Basically want "top" but with both CPU's displayed from the
> console.
>
> You can use top and watch the system load grow to 200%
>
> --
> Steve Borho Voice: 314-615-6349
> Network Engineer
> Celox Communications Corp
>
> Fortune of the day:
> Treat your friend as if he might become an enemy.
> -- Publilius Syrus
>
> --
> To unsubscribe: mail [EMAIL PROTECTED] with
> "unsubscribe"
> as the Subject.
>
> --
> To unsubscribe: mail [EMAIL PROTECTED] with
"unsubscribe"
> as the Subject.
--
pgp = Pretty Good Privacy.
To get my public pgp key, send an e-mail to: [EMAIL PROTECTED]
Visit my web site at http://www.schaffter.com
--
To unsubscribe: mail [EMAIL PROTECTED] with
"unsubscribe"
as the Subject.
--
To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
as the Subject.
--
To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
as the Subject.
