[Beowulf] [EXTERNAL] Re: List archives
Lux, Jim (US 7140)
james.p.lux at jpl.nasa.gov
Tue Aug 24 16:18:29 UTC 2021
Great article on the history referenced there..
On 8/24/21, 6:07 AM, "Beowulf on behalf of Douglas Eadline" <beowulf-bounces at beowulf.org on behalf of deadline at eadline.org> wrote:
It is a real cluster, available in 4 and 8 node versions.
The design if for non-data center use. That is, local
office, lab, home where power, cooling, and noise
are important. More info here:
> Hi Doug,
> Not to derail the discussion, but a quick question you say desk side
> cluster is it a single machine that will run a vm cluster?
> -----Original Message-----
> From: Beowulf <beowulf-bounces at beowulf.org> On Behalf Of Douglas Eadline
> Sent: 23 August 2021 23:12
> To: John Hearns <hearnsj at gmail.com>
> Cc: Beowulf Mailing List <beowulf at beowulf.org>
> Subject: Re: [Beowulf] List archives
> I think that was on twitter.
> In any case, I'm working with these processors right now.
> On the new Ryzens, the power usage is actually quite tunable.
> There are three settings.
> 1) Package Power Tracking: The PPT threshold is the allowed socket power
> consumption permitted across the voltage rails supplying the socket.
> 2) Thermal Design Current: The maximum current (TDC) (amps) that can be
> delivered by a specific motherboard's voltage regulator configuration in
> thermally-constrained scenarios.
> 3) Electrical Design Current: The maximum current (EDC) (amps) that can be
> delivered by a specific motherboard's voltage regulator configuration in a
> peak ("spike") condition for a short period of time.
> My goal is to tweak the 105W TDP R7-5800X so it draws power like the
> 65W-TDP R5-5600X
> This is desk-side cluster low power stuff.
> I am using extension cable-plug for Limulus blades that have an in-line
> current meter (normally used for solar panels).
> Now I can load them up and watch exactly how much current is being pulled
> across the 12V rails.
> If you need more info, let me know
>> The Beowulf list archives seem to end in July 2021.
>> I was looking for Doug Eadline's post on limiting AMD power and the
>> results on performance.
>> John H
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