[Beowulf] [EXTERNAL] Re: List archives

[Lux, Jim (US 7140)]

Great article on the history referenced there..
https://www.admin-magazine.com/HPC/Articles/Desktop-Supercomputers-Past-Present-and-Future

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:

    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://urldefense.us/v3/__https://www.limulus-computing.com__;!!PvBDto6Hs4WbVuu7!f3kkkCuq3GKO288fxeGGHi3i-bsSY5P83PKu_svOVUISu7dkNygQtSvIpxHkE0XDpKU4fOA$ 
    https://urldefense.us/v3/__https://www.limulus-computing.com/Limulus-Manual__;!!PvBDto6Hs4WbVuu7!f3kkkCuq3GKO288fxeGGHi3i-bsSY5P83PKu_svOVUISu7dkNygQtSvIpxHkE0XD7eWwVuM$ 

    --
    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

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