Cc'ed correct debian-arm address... On 2016-03-06, Holger Levsen wrote: > On Sonntag, 6. März 2016, Axel Beckert wrote: >> I now wonder if a bunch of Raspberry Pi 3 -- since they have 64-bit >> CPUs (IIRC an Allwinner A53T) -- would make us able to check >> reproducible-builds for Debian arm64, too.
I got the impression it was another broadcom chip, maybe with a cortex-a53? Gotta love ARM's confusing namespace. > as far as I know, yes. Though I would want to use some other arm64 boards as > well, to have hardware variety right from the start. for example: > http://www.heise.de/newsticker/meldung/RasPi-Angreifer-Odroid-C2-Schneller- > etwas-teurer-aber-ohne-WLAN-3123182.html also has an arm64 cpu, but twice > as much ram (2gb) as the raspi3 and 2 ghz cores instead of 1.2 ghz ones on > the > raspi3. *buntu also has a new arm64 developer/reference board. There will be > more in 3 months too. I've definitely been thinking about some of these new arm64 capable boards. The Odroid-C2, Pine64 and LeMaker HiKey have 2GB RAM options, at least. I do worry a bit about sufficient mainline support, as a few of the boards I've tried (odroid-c1+, cubieboard4) didnt really work out with vendor kernels and the mainline support wasn't close enough to be useable. That said, I'm not sure how much CPU/board diversity has really resulted in reproducibility issues at this point, so getting a less diverse network set up might be fine. Also of note, the arm64 boards *could* be used to test arm64, armhf or armel. So they're certainly more flexible. I've considered getting a small number of the arm64 capable boards and plugging them into the armhf network with the idea that they could be switched over to arm64 in the future. > I think we'd need 10-12 of such boards for a start, not sure if we still have > Debian funds to buy those (but I almost think so… Vagrant?) - I need to do a final tally yet, but it's nearly done. There might be some funding left for a few boards, but probably not 10 boards once you factor in the costs of SSDs, power supplies, and other necessary adapters. We've certainly met the target of tripling the build network speed, at least! https://tests.reproducible-builds.org/stats_builds_per_day_armhf.png > providing we would find someone interested+able to host these. Would > you (Axel) be able too? One thing is it uses a considerable amount of bandwidth monthly. The 16 boards we had running last month consumed about 500GB of upload bandwidth for the last two months. Most of that was upload bandwidth, since a caching proxy minimizes the impact of downloads (~90GB downloaded on the proxy). Power consumption is, of course, relatively low... even with 18 boards and some infrastructure, it uses under 150 watts. live well, vagrant
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