[Beowulf] List archives

[Douglas Eadline]

Jonathan

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:

https://www.limulus-computing.com
https://www.limulus-computing.com/Limulus-Manual

--
Doug



> 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?
>
> Regards,
> Jonathan
>
> -----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
>
> John,
>
> 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
>
> --
> Doug
>
>> 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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>
>
> --
> Doug
>
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-- 
Doug