* APIC Cluster Model
@ 2001-11-08 21:28 aputhiya
2001-11-08 22:01 ` Andreas Dilger
0 siblings, 1 reply; 3+ messages in thread
From: aputhiya @ 2001-11-08 21:28 UTC (permalink / raw)
To: linux-smp; +Cc: linux-kernel
Hi,
Linux uses FLAT MODEL for setting up the IO APIC for SMP machines (Intel IA-32
arch). I was wondering if the CLUSTER MODEL has been implemented in any of
later SMP kernels?
Thanks
Aravindh
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: APIC Cluster Model
2001-11-08 21:28 APIC Cluster Model aputhiya
@ 2001-11-08 22:01 ` Andreas Dilger
2001-11-10 0:51 ` Martin J. Bligh
0 siblings, 1 reply; 3+ messages in thread
From: Andreas Dilger @ 2001-11-08 22:01 UTC (permalink / raw)
To: aputhiya; +Cc: linux-smp, linux-kernel
On Nov 08, 2001 16:28 -0500, aputhiya wrote:
> Linux uses FLAT MODEL for setting up the IO APIC for SMP machines (Intel
> IA-32 arch). I was wondering if the CLUSTER MODEL has been implemented
> in any of later SMP kernels?
Yes, the IBM folks implemented this for CONFIG_MULITQUAD. I don't know
the details, but it is in stock 2.4.13+ kernels at least.
Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: APIC Cluster Model
2001-11-08 22:01 ` Andreas Dilger
@ 2001-11-10 0:51 ` Martin J. Bligh
0 siblings, 0 replies; 3+ messages in thread
From: Martin J. Bligh @ 2001-11-10 0:51 UTC (permalink / raw)
To: Andreas Dilger, aputhiya; +Cc: linux-smp, linux-kernel
>> Linux uses FLAT MODEL for setting up the IO APIC for SMP machines (Intel
>> IA-32 arch). I was wondering if the CLUSTER MODEL has been implemented
>> in any of later SMP kernels?
>
> Yes, the IBM folks implemented this for CONFIG_MULITQUAD. I don't know
> the details, but it is in stock 2.4.13+ kernels at least.
Look for things switched on clustered_apic_mode - some of it is
specific to IBM NUMA-Q (and should probably be switched on
something else that's also triggered by CONFIG_MULTIQUAD),
but most of it is switching to clustered APIC mode.
If you have another machine that uses this mode, feel free to
mail me any questions you have about what I did.
Martin.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2001-11-09 0:52 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2001-11-08 21:28 APIC Cluster Model aputhiya
2001-11-08 22:01 ` Andreas Dilger
2001-11-10 0:51 ` Martin J. Bligh
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®