[R-sig-Debian] arm64 r-base backports on CRAN

[Dirk Eddelbuettel]

Hi Johannes,

On 29 June 2025 at 22:28, Johannes Ranke wrote:
| Hi Dirk,
| 
| Am Dienstag, 24. Juni 2025, 20:20:42 CEST schrieb Dirk Eddelbuettel:
| > Hi Johannes,
| > 
| > ( And sorry about the fat-finger typo in the earlier email butchering your
| > name. 
| 
| No worries! Happens to the best of us - and to me as well :)
| 
| > I really need to get proof-reading emails before sending... )
| > > 
| > On 24 June 2025 at 20:02, Jeroen Ooms wrote:
| > | On Tue, Jun 24, 2025 at 7:55 PM Johannes Ranke <johannes.ranke using jrwb.de> 
| wrote:
| > | > Hey Jeroen,
| > | > 
| > | > I was recently considering to do this, but did not get around to buy
| > | > hardware or look for hosting on that architecture.
| 
| I found a nice offer from my hosting provider. The arm64 backports of R 4.5.1 
| to Debian 11 (bullseye) and 12 (bookworm) should hit the mirrors at midnight.

Awesome.
 
| After my work, I snapshotted the server and deleted it to save resources. I 
| believe I should be able to easily recover it when I get around to do the 
| backports for trixie or the next R release comes up.

Sounds good. There may not be much arm64 demand yet (and my r2u logs seem to
confirm that hunch) but more and more hardware availability over the next
little while should change it. So good to have it up and running.

Best,  Dirk

| Cheers,
| 
| Johannes
| 
| > | > 
| > | > I just invested in a nice amd64 system, but just for building for CRAN I
| > | > wont need too many arm64 cyles.
| > | > 
| > | > Any recommendations on where to look?
| > | 
| > | GitHub actions has free arm64 and x86_64 runners. If you have the
| > | build scripts somewhere, we can try to run them on there. I think this
| > | is also where Dirk builds the arm64 ubuntu binary R packages.
| > 
| > Yes, I was about to suggest that too but Jeroen beat me to it. I looked
| > around, and noticed Hetzner has relatively inexpensive machines ... but at
| > the end of the day it is still your money out of your pocket.
| > 
| > I started to poke at arm64 when the (free) runner became available for
| > ubuntu-24.04 (and they since added ubuntu-22.04 too). I actually execute the
| > build-step in a (custom) Docker container (with added r2u resources) so you
| > should be able to use the Ubuntu runner to start a Debian container ... and
| > after that it is like running locally. Only umpteen times slower for
| > debugging cycles <wink>. I also switched to building the BioC binaries for
| > amd64 there.
| > 
| > My (fairly ad-hoc) repo is
| >   https://github.com/eddelbuettel/r2u-arm64-builder
| > and the action file is
| >  
| > https://github.com/eddelbuettel/r2u-arm64-builder/blob/main/.github/workflo
| > ws/arm64.yaml
| > 
| > I respect a remote invocation reflecting the packages to build in each run,
| > that will be easier for you as you know what to build.
| > 
| > Ping me if you have question. Direct DM may be best, you could hop into the
| > (open) r-contributors slack at r-contributors.slack.com
| > 
| > Cheers, Dirk
| 
| 
| 
| 

-- 
dirk.eddelbuettel.com | @eddelbuettel | edd using debian.org