linux-kernel - Re: [PATCH] x86_64: make amd quad core 8 socket system not be clustered

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Message-ID: <86802c440802261309g67fab67eka19db3b02b068a39@mail.gmail.com>
Date:	Tue, 26 Feb 2008 13:09:11 -0800
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Ravikiran Thirumalai" <kiran@...lemp.com>
Cc:	"Andi Kleen" <andi@...stfloor.org>, "Ingo Molnar" <mingo@...e.hu>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	shai@...lemp.com
Subject: Re: [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box v2

On Tue, Feb 26, 2008 at 12:32 PM, Ravikiran Thirumalai
<kiran@...lemp.com> wrote:
> On Tue, Feb 26, 2008 at 11:00:58AM -0800, Yinghai Lu wrote:
>  >
>  >1. if acpi=off ?
>
>  Well that is not a realistic scenario for any multi chassi NUMA machine,
>  since the proximity information is very important and turning acpi off
>  deprives the OS of this information.
>
>
>  >2. some system will be treated wrong.
>  >my four sockets system
>  >ACPI: SLIT: nodes = 4
>  > 10 13 13 16
>  > 13 10 16 13
>  > 13 16 10 13
>  > 16 13 13 10
>  >my eight sockets system
>
>  This makes it difficult to use SLIT for multi chassi detection then :(.
>  Did not know such SLIT tables existed on single board machines.
Yes

YH
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