[Cake] new 12 core box

Dave Taht dave.taht at gmail.com
Sun Dec 3 12:04:25 EST 2017

On Sun, Dec 3, 2017 at 3:37 AM, Pete Heist <peteheist at gmail.com> wrote:
> On Dec 2, 2017, at 11:10 PM, Dave Taht <dave.taht at gmail.com> wrote:
> Linux spaceheater 4.15.0-rc1-cake-5 #1 SMP PREEMPT Sat Dec 2 12:50:23
> PST 2017 x86_64 x86_64 x86_64 GNU/Linux
> I had all kinds of trouble trying to install anything later than
> ubuntu 16.04.3 on it.
> A kernel build still took an hour, and it turns out that time is
> dominated by the single threaded debian packager, where less cores at
> more clock would help. Still have time for naps, except that it's so
> loud to require earplugs.
> I like the name. “dornierdox” doesn’t have the same smooth ring:
> https://en.wikipedia.org/wiki/Dornier_Do_X (Powerplant: 12× Curtiss
> Conqueror water-cooled V12)

Heh. I had not heard of that plane. Ceiling, 500 feet.

>Who decides to build that?

Howard Hughes?


> I still think a box like that will be useful for veth testing.

I put it through some paces last night, trying 4Gbit workloads.

> I’ve been really happy with the 2x APU2 you suggested, for their four cores
> and silence. I even think 2-3 more of them could be useful for different
> testing topologies as we discussed.

I like them a lot, too. We have to come up with a test that uses up 3
ethernet ports...

> Next time though, I won’t futz around
> when attaching the heat spreader, just fix the thermal adhesive, mount it to
> the board straight away and be careful not to twist anything. First attempt:
> apu2a. Got it right: apu2b. The second box is consistently 5C cooler, though
> both are well within spec, usually under 65C under full load.
> sysadmin at apu2a:~$ sensors
> k10temp-pci-00c3
> temp1:        +52.4°C  (high = +70.0°C)
>                        (crit = +105.0°C, hyst = +104.0°C)
> sysadmin at apu2b:~$ sensors
> k10temp-pci-00c3
> temp1:        +46.6°C  (high = +70.0°C)

I'll go install that. I have an old custom version of lede on two of 'em..


Dave Täht
CEO, TekLibre, LLC
Tel: 1-669-226-2619

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