| 12 Nov 2025 |
 Daniel Fahey | Up to you, I'm in your debt already, I thought you were having fun messing about and learning | 17:53:34 |
 Ari Lotter | oh yeah i meant like, to run review | 17:56:26 |
| Ari Lotter | how big is this closure lmao | 17:56:30 |
| Ari Lotter | im at 3gb downloaded so far | 17:56:34 |
| Ari Lotter | oh there we go | 17:56:40 |
| Ari Lotter | ok will try the review again heh | 17:57:13 |
| Ari Lotter | huh. nixpkgs at b3d51a0365f6695e7dd5cdf3e180604530ed33b4 (based off nixos-unstable)` seems to have something broken with torch / cuda / cudnn...
torch 2.8 worked fine, but 2.9 with my same application code throws
[cuda:0]: cuDNN Frontend error: No valid engine configs for Matmul_MUL_ADD_Reduction_SUB_EXP_Reduction_LOG_ADD_DIV_Matmul_
{"engineId":2,"smVersion":900,"knobChoices":{"CUDNN_KNOB_TYPE_KERNEL_CFG":7}}
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: Could not open libnvrtc at: this->libnvrtc == nullptr
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: compiler.load()
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: rtk(kernelNumRunning)->loadDLL()
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: status == CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: ptr->isSupported()
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: finalize_internal()
{"engineId":1,"smVersion":900,"knobChoices":{"CUDNN_KNOB_TYPE_KERNEL_CFG":3}}
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: Could not open libnvrtc at: this->libnvrtc == nullptr
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: compiler.load()
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: rtk(kernelNumRunning)->loadDLL()
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: status == CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: ptr->isSupported()
Warning: CUDNN_STATUS_NOT_SUPPORTED_RUNTIME_PREREQUISITE_MISSING; Reason: finalize_internal()
| 17:58:30 |
| Ari Lotter | missing nvrtc i guess.. | 17:58:40 |
| Ari Lotter | gonna compare against my weird 2.9.0-nightly setup i was using before.. | 18:00:37 |
| Daniel Fahey | Would need a reprex I think with the smallest bit of your application code that can trigger this | 18:40:46 |
| Daniel Fahey | For the package maintainer(s) to look into it | 18:41:02 |
| Ari Lotter | yeah workin on it 😓 | 18:41:34 |
| Ari Lotter | it's ~100k lines of code i gotta narrow down heh | 18:41:46 |
 connor (burnt/out) (UTC-8) | SomeoneSerge (back on matrix)Gaétan LepageI added you both as collaborators on my fork of Nixpkgs. I had a death in the family so I’m going to be in and out. We need to get this PR fixed up and merged: https://github.com/NixOS/nixpkgs/pull/456510
We also need to get this PR merged: https://github.com/NixOS/nixpkgs/pull/459416
I likely won’t have time to do that over the next few days. Can you two do that for me? | 19:12:06 |
 leona | take care <3 | 20:40:59 |
| Daniel Fahey | Condolences | 21:24:01 |
