[LinuxBIOS] dual core disable?
gjohnson at lanl.gov
Tue Nov 8 01:02:57 CET 2005
BTW, How come you don't use the CPU1 Enable (Cpu1En) bit to disable the
On Mon, Nov 07, 2005 at 03:55:01PM -0800, Lu, Yinghai wrote:
> 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
> //#if CONFIG_LOGICAL_CPUS == 1
> -----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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