| 16 Apr 2026 |
 hexa (UTC+1) | https://hydra.nixos-cuda.org/jobset/nixos-cuda/cuda-packages-unstable#tabs-evaluations | 13:35:18 |
| hexa (UTC+1) | the last eval was two weeks ago | 13:35:24 |
 Robbie Buxton | In reply to @hexa:lossy.network
that seems unlikely Idk I’ve oomed on packages with over 1TB of ram | 13:36:51 |
| hexa (UTC+1) | wat\ | 13:37:01 |
| hexa (UTC+1) | Redacted or Malformed Event | 13:37:03 |
 nim65s | but you build with how many cores? | 13:37:23 |
| hexa (UTC+1) | a) you can run out of ram with exccessive cores | 13:37:29 |
| nim65s | * but you build with how many cores ? | 13:37:31 |
| hexa (UTC+1) | b) without excessive cores the most ram usage is during linking | 13:37:38 |
| hexa (UTC+1) | I'd say firefox takes at most 40 GB to link | 13:37:55 |
| Robbie Buxton | I was using nixbuild.net and it kept sizing it up and giving it more cores, and yeah the solution was reducing cores obviously | 13:38:02 |
| hexa (UTC+1) | that's not friendly at all, but does fit on my desktop still | 13:38:12 |
| hexa (UTC+1) | but that means your core/ram balance was way off | 13:38:28 |
| Robbie Buxton | In reply to @hexa:lossy.network
but that means your core/ram balance was way off How so? | 13:39:20 |
| hexa (UTC+1) | you have a base need of RAM per core | 13:39:51 |
| hexa (UTC+1) | just to run the build on it | 13:39:58 |
| hexa (UTC+1) | and if you oom the total cores probably needed more ram than what was provided | 13:40:17 |
| hexa (UTC+1) | and the solution would have been to get fewer cores with more ram instead | 13:40:30 |
| Robbie Buxton | Idk I can’t get more than 1.6 TB of ram on AWS 😁 | 13:40:42 |
| hexa (UTC+1) | now I don't know anything about how nixbuild.net does scaling | 13:40:56 |
| Robbie Buxton | The large instances have interesting ratios | 13:40:55 |
| hexa (UTC+1) | yeah, but if you get 10k cores at the same time, then what? | 13:41:09 |
| Robbie Buxton | Iirc it’s not that smart for sizing (the service itself is fab tho) | 13:41:32 |
| hexa (UTC+1) | that's 160 MB per core if I didn't miscalculate | 13:41:38 |
| Robbie Buxton | In reply to @hexa:lossy.network
yeah, but if you get 10k cores at the same time, then what? On a single machine I can dream | 13:41:47 |
| hexa (UTC+1) | right | 13:41:55 |
 Gaétan Lepage | Yes, our cuda-packages jobset is broken because python3Packages.deep-ep emits a warning at eval time. | 13:56:06 |
| Gaétan Lepage | If someone may review https://github.com/NixOS/nixpkgs/pull/510375, we could start building again | 13:56:23 |
| Gaétan Lepage | Sorry everyone for the disruption | 13:56:35 |
 SomeoneSerge (matrix works sometimes) | A reminder that the cache is not an officially maintained cuda team thing at the moment, and only exposed as an accidental dev artifact. Reminder that "stable channels" are not an official cuda team thing. Only hydra itself is. For the time being. | 14:00:03 |
