[Beowulf] [EXTERNAL] Re: Power per area

[Jonathan Engwall]

Add concrete; it will weigh more, it will support more.

On Tue, Mar 10, 2020, 2:29 PM Lux, Jim (US 337K) via Beowulf <
beowulf at beowulf.org> wrote:

> The website is pretty “technical content free” – it’s essentially a
> sell-sheet, without a summary of specifications.  And, I couldn’t find
> anywhere that says how it works.
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> *From: *Beowulf <beowulf-bounces at beowulf.org> on behalf of Jeff Johnson <
> jeff.johnson at aeoncomputing.com>
> *Date: *Tuesday, March 10, 2020 at 12:48 PM
> *To: *Scott Atchley <e.scott.atchley at gmail.com>
> *Cc: *"beowulf at beowulf.org" <beowulf at beowulf.org>
> *Subject: *[EXTERNAL] Re: [Beowulf] Power per area
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> Scott,
>
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> It's not immersion but it's a different approach to the conventional rack
> cooling approach. It's really cool (literally and figuratively). They're
> based here in San Diego.
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> https://ddcontrol.com/
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>
> --Jeff
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> On Tue, Mar 10, 2020 at 12:37 PM Scott Atchley <e.scott.atchley at gmail.com>
> wrote:
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> Hi everyone,
>
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>
> I am wondering whether immersion cooling makes sense. We are most limited
> by datacenter floor space. We can manage to bring in more power (up to 40
> MW for Frontier) and install more cooling towers (ditto), but we cannot
> simply add datacenter space. We have asked to build new building and the
> answer has been consistently "No."
>
>
>
> Summit is mostly water cooled. Each node has cold plates on the CPUs and
> GPUs. Fans are needed to cool the memory and power supplies and is captured
> by rear-door heart exchangers. It occupies roughly 5,600 ft^2. With 200 PF
> of performance and 14 MW of power, that is 36 TF/ft^2 and 2.5 kW/ft^2.
>
>
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> I am wondering what the comparable performance and power is per square
> foot for the densest, deployed (not theoretical) immersion cooled systems.
> Any ideas?
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> To make the exercise even more fun, what is the weight per square foot for
> immersion systems? Our data centers have a limit of 250 or 500 pounds per
> square foot. I expect immersion systems to need higher loadings than that.
>
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> Thanks,
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> Scott
>
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>
> --
>
> ------------------------------
> Jeff Johnson
> Co-Founder
> Aeon Computing
>
> jeff.johnson at aeoncomputing.com
> www.aeoncomputing.com
> t: 858-412-3810 x1001   f: 858-412-3845
> m: 619-204-9061
>
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>
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