[PlanetCCRMA] Newbie question

Fernando Lopez-Lezcano nando@ccrma.Stanford.EDU
Tue Jan 2 10:20:03 2007

On Tue, 2007-01-02 at 14:04 +0100, Henrik Frisk wrote:
> Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> wrote:
> > On Mon, 2007-01-01 at 20:17 +0100, Henrik Frisk wrote:
> > > Well, that's what I thought too, but then I saw that the FC5 default
> > > kernel had a name containing SMP, but then again, I'm new to Fedora and
> > > I'm new to Dual Core so I'm just guessing...
> > 
> > You should be able to use the smp kernel. AFAIK "dual core" == "dual
> > cpu", I'm using Athlon dual cores with no problems. Perhaps the
> > confusion is because some earlier dual cores were two chips in a single
> > ic, I think all the current ones are two processors in just one chip.
> > Hmmm, well, then there was the "hyperthreading" thing with P4
> > processors, there was just _one_ processor but apparently two being
> > reported. The "second" processor was just make believe using idle cycles
> > of the only cpu available. Depending on what you did you could have a 10
> > to 20% improvement in speed - but that was definitely a one processor
> > hardware setup. 
> > 
> > Which kernel exactly are you trying to boot (the smp one)? Do happen to
> > see anything like an error message? Does the machine simply stop at some
> > point in the boot process?
> > 
> 2.6.16-10.2080.16.rdt.rhfc5.ccrmasmp but I tried the PREEMPT-RT kernel
>     too with the same result. The boot process simply stops at (last
>     line of output).
> ide0: ports already in use, skipping probe
> I doesn't throw any errors as far as I can see. The output up until the
> point above is identical compared to the boot process with the single
> CPU kernel.

Hmmm... obviously an issue with the realtime preemption patch and your
dual processor setup. I don't have much to say. Are you booting with the
graphical boot off? (edit the grub kernel boot line and erase the "rhgb
quiet" part at the end before booting) - you may get more information on
what's failing. 

-- Fernando