Date: Tue, 27 Jul 1999 09:39:43 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Peter Wemm <peter@netplex.com.au> Cc: Nate Williams <nate@mt.sri.com>, Tom Embt <tom@embt.com>, freebsd-smp@FreeBSD.ORG Subject: Re: SMP kernel on dual board with single proc? Message-ID: <199907271639.JAA54559@apollo.backplane.com> References: <19990727105633.C228D1C9E@overcee.netplex.com.au>
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:
:Yes, but that's not what he asked. He wanted to know if a SMP kernel worked
:on a SMP motherboard with one CPU, not if a UP kernel works on a 1 cpu SMP
:motherboard.
:
:I have never tried it, I don't know. (and can't easily get to a machine to
:find out since they are at the bottom of a stack)
:
:> Nate
:
:Cheers,
:-Peter
Since you have to modify NCPU anyway, I don't see there being much of
a difference between compiling up an SMP kernel with NCPU=1, and compiling
up a UP kernel. I think the question was (and the author can correct me
if I'm wrong), simply whether it was possible to run FreeBSD on a
duel-cpu motherboard which only had one cpu populated. The answer is yes.
There is a 'plug' you need to stick into the unused cpu slot, which should
have come with the motherboard, but that's the only issue I know of.
-Matt
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