[Beowulf] Power per area

Jeff Johnson jeff.johnson at aeoncomputing.com
Tue Mar 10 12:47:37 PDT 2020


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.



On Tue, Mar 10, 2020 at 12:37 PM Scott Atchley <e.scott.atchley at gmail.com>

> Hi everyone,
> 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.
> I am wondering what the comparable performance and power is per square
> foot for the densest, deployed (not theoretical) immersion cooled systems.
> Any ideas?
> 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.
> Thanks,
> Scott
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Jeff Johnson
Aeon Computing

jeff.johnson at aeoncomputing.com
t: 858-412-3810 x1001   f: 858-412-3845
m: 619-204-9061

4170 Morena Boulevard, Suite C - San Diego, CA 92117

High-Performance Computing / Lustre Filesystems / Scale-out Storage
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