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NixOS CUDA

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CUDA packages maintenance and support in nixpkgs | https://github.com/orgs/NixOS/projects/27/ | https://nixos.org/manual/nixpkgs/unstable/#cuda61 Servers

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24 May 2024
@connorbaker:matrix.orgconnor (he/him)I've seen a lot of random IO on my builders, so I was thinking about maybe getting one21:16:41
@philiptaron:matrix.orgPhilip Taron (UTC-8) They go for ~$55-75 USD each on ebay. 21:20:01
@philiptaron:matrix.orgPhilip Taron (UTC-8)Not a lot of downsides if you have the spare M.2 space in your machines.21:20:58
@ss:someonex.netSomeoneSerge (matrix works sometimes)Where do you mount these?21:21:50
@ss:someonex.netSomeoneSerge (matrix works sometimes)As in: how are they more useful than tmpfs?21:22:26
@philiptaron:matrix.orgPhilip Taron (UTC-8)They're basically not, other than: stable storage and doesn't compete for RAM21:23:18
@ss:someonex.netSomeoneSerge (matrix works sometimes)Ok how do you use them?21:23:52
@ss:someonex.netSomeoneSerge (matrix works sometimes) * Ok how do you use them? 21:24:06
@philiptaron:matrix.orgPhilip Taron (UTC-8)https://wiki.archlinux.org/title/Bcachefs -- yeah, I live on the edge 🙈 They're the "SSD" in front of my actual SSDs21:28:12
@philiptaron:matrix.orgPhilip Taron (UTC-8) Again, I have done no benchmarking and perceptually, there's no difference. 21:28:50
@aidalgol:matrix.orgaidalgol SomeoneSerge (UTC+3): Also, what should I do about backporting that PR since the automatic process for doing that failed? 21:32:42
@connorbaker:matrix.orgconnor (he/him) SomeoneSerge (UTC+3): they're basically (slow) non-volatile RAM. Intel initially tried to position it in the datacenter as a tier between fast disks and RAM but it kind of flopped :l
the 4k random read/write is still the best on the market though
21:33:19
@connorbaker:matrix.orgconnor (he/him) Philip Taron (UTC-8): I was looking at the p5800x, which unfortunately doesn't go for that amount :f 21:35:05
@philiptaron:matrix.orgPhilip Taron (UTC-8)Oh yeah, those don't need the crazy software hacks to be made use of like the raw "here's a tiny bit of optane" ones do.21:36:21
@ss:someonex.netSomeoneSerge (matrix works sometimes)
In reply to @aidalgol:matrix.org
SomeoneSerge (UTC+3): Also, what should I do about backporting that PR since the automatic process for doing that failed?
You can just follow the instructions posted by the bot and ping me for the merge
21:39:28
@ss:someonex.netSomeoneSerge (matrix works sometimes)
In reply to @philiptaron:matrix.org
https://wiki.archlinux.org/title/Bcachefs -- yeah, I live on the edge 🙈

They're the "SSD" in front of my actual SSDs
I seeeeeeeeeeeeeee
21:40:39
@ss:someonex.netSomeoneSerge (matrix works sometimes)
In reply to @connorbaker:matrix.org
SomeoneSerge (UTC+3): they're basically (slow) non-volatile RAM. Intel initially tried to position it in the datacenter as a tier between fast disks and RAM but it kind of flopped :l
the 4k random read/write is still the best on the market though
Yes, conceptually this is clear. Putting this into practice is what sounds non-trivial
21:41:53
@aidalgol:matrix.orgaidalgolI don't understand what happened here: https://github.com/NixOS/nixpkgs/actions/runs/9230354336/job/25398415658 https://github.com/NixOS/nixpkgs/actions/runs/9230354050/job/25398414515#step:3:10222:02:21
25 May 2024
@ss:someonex.netSomeoneSerge (matrix works sometimes)
In reply to @aidalgol:matrix.org
I don't understand what happened here: https://github.com/NixOS/nixpkgs/actions/runs/9230354336/job/25398415658 https://github.com/NixOS/nixpkgs/actions/runs/9230354050/job/25398414515#step:3:102
Hmmm, maybe we merged the previous PR unformatted, and the action is confused about the list split into lines in the backport?
08:19:07
@ss:someonex.netSomeoneSerge (matrix works sometimes)

Note this should not necessarily be treated as a hard fail, but a reviewer's attention should be drawn to it and github actions have no way of doing that but to raise a 'failure'

🤔

08:19:33
@ss:someonex.netSomeoneSerge (matrix works sometimes)I've never encountered this08:19:36
@ss:someonex.netSomeoneSerge (matrix works sometimes)

https://github.com/NixOS/nixpkgs/blob/d091b7f681e8e5c21947e5de45b7f397a57011ae/maintainers/scripts/check-cherry-picks.sh#L52-L59

I still fail to understand what is it exactly that warrants inspection

08:57:17
@ss:someonex.netSomeoneSerge (matrix works sometimes)Oh mornings are hard08:57:29
@aidalgol:matrix.orgaidalgolA comment for the conditional on line 52 would help a lot.09:15:25
@aidalgol:matrix.orgaidalgol

Header comment:

# Find alleged cherry-picks

But... why?

09:16:13
@aidalgol:matrix.orgaidalgolWhat is the purpose of this check??09:16:25
29 May 2024
@connorbaker:matrix.orgconnor (he/him) is it irritating to anyone else that nixpkgs-review uses allowBroken = true 02:01:43
@connorbaker:matrix.orgconnor (he/him) Similar to OfBorg, that means we can't guard broken evaluations behind meta.broken 02:04:58
@connorbaker:matrix.orgconnor (he/him)I only mention that because I just ran into evaluation errors which should be prevented by https://github.com/NixOS/nixpkgs/commit/e8dbfc07e54c5b477e95dac72b8153e381b0f840 where I'm using a newer version of CUDA and the attribute set doesn't have a binary release for that version so the lookup fails.02:05:48
@glepage:matrix.orgGaétan Lepage I am not sure to get that connor (he/him) (UTC-5).
For me, nixpkgs-review is not attempting to build packages marked as broken. Is that what you meant ?
05:55:45

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