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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/#cuda60 Servers

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13 Oct 2025
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)Yes, 8am Pacific17:22:55
@gmacon:matrix.org@gmacon:matrix.org left the room.17:53:23
15 Oct 2025
@danielrf:matrix.orgdanielrf connor (he/him) (UTC-7): Hey, just fyi. This looks very similar to an issue we had fixed in jetpack-nixos: https://github.com/NixOS/nixpkgs/issues/451912 I can't recall if our fix was generic enough to also be applicable to the nixpkgs' nvidia-container-toolkit 03:56:45
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)pain07:03:11
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)Yeah Jared had written a udevadm settle for some devices; when I refactored to use upstream’s container toolkit stuff I commented it out hoping waiting on the modprobe nvgpu service was enough07:05:36
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)

Relevant PRs:

  • https://github.com/anduril/jetpack-nixos/pull/317
  • https://github.com/anduril/jetpack-nixos/pull/331
07:06:36
@glepage:matrix.orgGaétan Lepage

connor (he/him) (UTC-7) SomeoneSerge (back on matrix) Torch 2.9.0 was just released.

I'm working on the bump.
It requires libnvshmem_host.so.3. I never heard of OpenSHMEM before.
Do we have it already in nixpkgs?

18:50:04
@apyh:matrix.orgapyhoh i have this in a fork, sec 19:43:52
@arilotter:matrix.orgAri Lotter joined the room.19:44:18
@arilotter:matrix.orgAri Lotter(still me sorry, diff devices w bad key management)19:44:26
@arilotter:matrix.orgAri Lotterhttps://github.com/PsycheFoundation/psyche/blob/main/nix/nvshmem.nix19:44:30
@arilotter:matrix.orgAri Lotterwe don't have nvshmem in nixpkgs19:44:35
@arilotter:matrix.orgAri Lotteri'm using this with torch 2.9.0 :)19:45:38
@glepage:matrix.orgGaétan LepageThanks for sharing! I guess we'll need to cleanly upstream this then?20:03:40
@glepage:matrix.orgGaétan Lepage* Thanks for sharing! I guess we'll need to cleanly upstream this then.20:03:41
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)I could probably add it to the CUDA 13 PR; nvshmem is one of the dependencies of libcublasmp I didn’t try to package20:53:02
16 Oct 2025
@arilotter:matrix.orgAri Lotterlmk if i can help - 2.9.0 (nightly) is in active usage in the above project00:46:36

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