Re: [PLUG] RAID6 or RAID5+HS?

["Keith C. Perry" <kperry@daotechnologies.com>]

Yea, Linux can use NUMA.  You can ever fake a NUMA system by passing a parameter to the kernel.  Pretty cool feature if you want to carve up a big box into NUMA segements on a non-NUMA system.

Sound like the its just a matter of vendor not making 2 way or 4 way NUMA boards for consumer chips.  Could be some other details we're missing too.

Although I could personally see running a 2 way NUMA based on a FX8250, I'm wondering if the thermal envelope of such an mATX (or more probably an ATX or EATX) system might be difficult to management.  I air cool now (or probably will again when I rebuild my main system) but maybe liquid coolers would be essential for such a build.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 
Keith C. Perry, MS E.E. 
Owner, DAO Technologies LLC 
(O) +1.215.525.4165 x2033 
(M) +1.215.432.5167 
www.daotechnologies.com

----- Original Message -----
From: "Rich Freeman" <r-plug@thefreemanclan.net>
To: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org>
Sent: Wednesday, August 24, 2016 2:10:59 PM
Subject: Re: [PLUG] RAID6 or RAID5+HS?

On Wed, Aug 24, 2016 at 1:33 PM, Keith C. Perry
<kperry@daotechnologies.com> wrote:
> Not as much as the "old days"...
>
> When it comes to segmented and virtual computing, Opterons can be put into NUMA builds but I don't know if that is just because no one makes NUMA mobo's for FX or A series CPUs or if those have a technical limitation.

My understanding has been that AMD chips have been effectively NUMA
for ages now, whether or not people treat them as such.  Individual
cores have faster access to individual regions of memory (direct
access vs going through another core).  I have no idea if the Linux
kernel takes advantage of this.

-- 
Rich
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