[LinuxBIOS] dual core disable?

Lu, Yinghai yinghai.lu at amd.com
Tue Nov 8 00:55:01 CET 2005


We may need to set the nbcfg 54 bit even disable the dual core.

Please several lines
1. src/cpu/dualcore/dualcore.c 
2. in you cache_as_ram_auto.c


-----Original Message-----
From: Greg Johnson [mailto:gjohnson at lanl.gov] 
Sent: Monday, November 07, 2005 3:37 PM
To: Lu, Yinghai
Cc: Ronald G Minnich; Greg Johnson; linuxbios at openbios.org
Subject: Re: [LinuxBIOS] dual core disable?

On Mon, Nov 07, 2005 at 03:00:09PM -0800, Lu, Yinghai wrote:
> ?
> In Normal BIOS, is there option to disable dual core?

No.  I'm pretty sure that I'm really getting two cores on one socket.
Memory bandwidth is affected when running on both cores.  In any case,
Linux K8 NUMA is confused:

p5:~# numactl --show
policy: default
preferred node: current
cpubind: 0
membind: 0 1


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