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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/#cuda57 Servers

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SenderMessageTime
5 Nov 2025
@apyh:matrix.orgapyhshould be fine03:28:56
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)Flash attention doesn’t support anything older than Ampere I thought03:29:07
@sporeray:matrix.orgRobbie Buxton V2 does 03:29:19
@sporeray:matrix.orgRobbie Buxton V3 is hopper only 03:29:24
@apyh:matrix.orgapyhya its only v3 iirc03:29:26
@sporeray:matrix.orgRobbie Buxton V4 (cute) is Blackwell 03:29:33
@sporeray:matrix.orgRobbie BuxtonBut that’s a wip03:29:38
@apyh:matrix.orgapyhand yeah fair enough I could drop fa for older gpus, ig i can provide cuda capabilities different per package03:30:06
@sporeray:matrix.orgRobbie Buxton Requires cutlass-dsl 03:30:07
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)V2 doesn’t support older than Ampere per their readme, unless they forgot to update it03:30:25
@apyh:matrix.orgapyh
In reply to @connorbaker:matrix.org
V2 doesn’t support older than Ampere per their readme, unless they forgot to update it
yeah makes sense then maybe I'll just drop and see if anyone complains lol
03:30:43
@sporeray:matrix.orgRobbie Buxton
In reply to @connorbaker:matrix.org
V2 doesn’t support older than Ampere per their readme, unless they forgot to update it
It’s not optimized but it runs
03:30:46
@sporeray:matrix.orgRobbie Buxton V3 is busted 03:30:54
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)So long as you have PTX it should be fine03:30:55
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8) cries in Ada 03:31:14
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8)Robbie have you been following PyTorch Helion? Seems interesting (but boooooo Bazel build)03:32:07
@sporeray:matrix.orgRobbie Buxton Yeah seems cool, morach too! 03:32:37
@sporeray:matrix.orgRobbie Buxton * Yeah seems cool, monarch too! 03:32:47
@apyh:matrix.orgapyhmonarch looks sweeet03:32:52
@apyh:matrix.orgapyhwere any of you at pytorch conference?03:33:02
@apyh:matrix.orgapyhshoulda asked when i was there lol03:33:08
@sporeray:matrix.orgRobbie BuxtonNah03:33:33
@sporeray:matrix.orgRobbie BuxtonWas it any good!?03:33:41
@apyh:matrix.orgapyhnah03:33:44
@apyh:matrix.orgapyhlol03:33:45
@apyh:matrix.orgapyhcouple neat talks but nothing revolutionary 03:33:57
@sporeray:matrix.orgRobbie Buxton I will say tho @apyh for packaging I often disable high capacities until after I’ve got it working to make it quicker to interate. 03:38:39
@sporeray:matrix.orgRobbie BuxtonI’ve yet to hit a capability specific build issue touch wood03:38:54
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8) Merged https://github.com/NixOS/nixpkgs/pull/458835
hexa (UTC+1) that should fix the Firefox breakage due to CUDA leaking into the default
15:33:50
@hexa:lossy.networkhexa (UTC+1)thannks15:36:24

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