Re: starting AMD second core

[Paul Goyette <paul%whooppee.com@localhost>]

Strange.

Both of my dual-core and my quad-core processor have no problems 
starting up all CPUs, no manual intervention required.  And all have 
different motherboards (ASUS M2N32-WS, ASUS M2N-E, and ECS nFORCE4M-A).

On Sat, 26 Apr 2008, Vincent wrote:

> arthur a écrit :
> > I installed the latest NetBSD 4 iso image on my dual core AMD system, and I
> > noticed that when running two processor intensive applications, that "top"
> > showed them both splitting the CPU time (and not each having 100% of a 
> > different
> > core).
> >
> > dmesg shows the second core "not started" (output below).
> >
> > I don't see anything in the motherboard manual that indicates anything 
> > needs (or
> > can) be done via the bios to enable the second core.  Can someone point me 
> > to
> > what I need to do to get both cores running?
>
> There seems to be a bug lurking around and I'm working on it with Andrew for 
> a while.
>
> It is not yet corrected but try this and tell me if it works:
>
> 1. Compile your KERNEL with options "MPDEBUG"
> 2. If your second CPU refuses to start, you will be caught in DDD
> 3. At the DDB prompt, just type 'cont'
>
> And look at your dmesg. For me, I have no clue why, but it works. The second 
> core start right away after resuming boot.
>
> Vincent
>
> !DSPAM:48135a3f1761867752553!

----------------------------------------------------------------------
|   Paul Goyette   | PGP DSS Key fingerprint: |  E-mail addresses:   |
| Customer Service | FA29 0E3B 35AF E8AE 6651 |  paul%whooppee.com@localhost   |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette%juniper.net@localhost |
----------------------------------------------------------------------