| 7 Oct 2024 |
 Gaétan Lepage | * Currently, we already patch the path to libnvrtc.so and libcuda.so, but maybe we should make the headers available too. | 20:35:11 |
 aidalgol | What is that doing that a missing header is a runtime error? | 20:44:05 |
| Gaétan Lepage | I think that tinygrad is compiling cuda kernels at runtime. | 20:46:22 |
| Gaétan Lepage | That's why this missing kernel causes a crash when using the library.
tinygrad is entirely written in python and is thus itself not compiled at all. | 20:46:55 |
| Gaétan Lepage | This is for sure quite unusual and this is why I am not sure how to make this header available "at runtime"... | 20:48:31 |
| aidalgol | I figured it must be something like that. I think any library derivation should be providing the headers in the derivation's dev. Given the error message shows a #include line, and with the system header brackets, seems we need to pass a path to the tinygrad build somehow. | 21:14:39 |
| aidalgol | Does whatever nvidia compiler it's using have an equivalent to -isystem for gcc? | 21:16:18 |
| Gaétan Lepage | Yes you are right. In the meantime, I found out that cuda_fp16.h is provided by cudaPackaged.cuda_cudart.dev | 21:18:16 |
| Gaétan Lepage | The issue is that the way they invoke the compiler is a bit obscure: https://github.com/search?q=repo%3Atinygrad%2Ftinygrad%20nvrtcGetCUBIN&type=code | 21:19:30 |
| Gaétan Lepage | I think that the closest examples within nixpkgs are cupy and numba.
But both of them operate this a bit differently. | 21:20:06 |
| 8 Oct 2024 |
|  @pascal.grosmann:scs.ems.host left the room. | 10:55:06 |
 connor (burnt/out) (UTC-8) | From what I’ve seen in the Python ecosystem, compiling kernels at runtime is becoming more commonplace because it reduces the size of binaries you ship and allows optimizing for the hardware you’re specifically running on. For example, JAX (via XLA) support auto tuning via Triton by compiling and running a number of different kernels. | 15:46:17 |
| Gaétan Lepage | Yes, compiling on the fly is the core spirit of tinygrad. | 15:47:06 |
 SomeoneSerge (matrix works sometimes) | Trying to compose backendStdenv with ccacheStdenv 🙃 | 17:07:51 |
| SomeoneSerge (matrix works sometimes) | In reply to @ss:someonex.net
Trying to compose backendStdenv with ccacheStdenv 🙃 callPackage is a blessing and a curse | 17:50:29 |
| SomeoneSerge (matrix works sometimes) | It works with a bit of copypaste though | 17:50:43 |
| SomeoneSerge (matrix works sometimes) | But has anyone run into weird PermissionDenied errors with ccache? the directory is visible in the sandbox and owned by nixbld group and id seemst o match... | 17:57:47 |
|  kaya 𖤐 changed their profile picture. | 19:36:06 |
| 9 Oct 2024 |
|  john joined the room. | 01:20:41 |
| 10 Oct 2024 |
| SomeoneSerge (matrix works sometimes) | Iterating on triton with ccache is so much faster lmao | 16:12:34 |
