GPU acceleration for AI features in Darktable - help needed testing install scripts

[anry (Andrii Ryzhkov)]

@priort

on windows…for me its 10 or more times faster than CUDA…I’m talking like a few seconds vs 40-60 with CUDA

Did you run this test on the latest nightly and updated models?

For me, previously, RAW denoise task on CUDA EP on Windows was very slow too. But with recent updates it is lighting fast.

RAW denoise of the same image on Windows 11:

• DirectML – 1.33 s
• CUDA – 1.30 s

The actual numbers depend on hardware and image size, but in general RAW denoise on CUDA on Windows is not slow anymore.

Please see:

Introducing neural restore module – raw denoise, denoise, and upscale

Update Nightly builds from 20260514 onward contain some improvements to the neural restore tasks (raw denoise, denoise, upscale) – aimed at faster and more stable runs across all platforms and GPUs. IMPORTANT - you need to delete old and download new models for tasks rawdenoise, denoise, upscale to work with this updates. Feedback welcome.