LuxCoreRender Forums

@Acasta69, I'm starting to think that compilation problem on Azure is due to the use of a Linux OpenCL SDK on Windows. The error seems to suggest that and the compilation on Windows works fine here. You should check the OpenCL headers, the definition of "cl_ulong" type should be like: typedef unsig...

So where are caches stored, so I can clear/ delete all & make proper comparison? For LuxCore 2.3 it should be: C:\Users\<username>\AppData\Local\Temp\kernel_cache For v2.4 there are two locations: C:\Users\<username>\AppData\Local\Temp\cuda_kernel_cache C:\Users\<username>\AppData\Local\Temp\ocl_ke...

Dade wrote: ↑

Thu May 21, 2020 5:52 pm

Not for the moment, for the first test, use OpenCL and CUDA enabled.

Everything's ok with this.

- you can compile the LuxCore sources without having to use OpenCL or CUDA SDK; Do you mean this should work even if compiled with OpenCL "disabled"? There is a problem, though: https://dev.azure.com/LuxCoreRender/LuxCoreRender/_build/results?buildId=2196&view=results These errors happen with no-oc...

At the moment, I have done some test only on Linux and it seems to works fine with not-latin languages. I assume MacOS will work too. We need to check Windows. I tried some very simple test on Windows using a filename with non-latin characters: LuxCoreUI opens and renders correctly a file called 'ש...

The difference is that with the first two builds you can choose GPU-based render engines (e.g. PathOCL), having much better performance in many cases. The first build has Cuda enabled: you can use it if you have a suitable Nvidia GPU. Many users reported better performance using the Cuda build with ...

I find the same very strange behaviour with TAO's scene, i.e. GPU is very slow, with LuxCoreUI 2.2 (but 2.4 is ok).
This line in the config file seems to be the source of the problem, at least on my laptop: If I comment it, then GPU speed is again very high.

Repeated tests without PhotonGI and denoiser, same versions as my previous posts, + latest version (with Cache Friendly Samplers): LuxCore2.3 OpenCL: 7906 rays/sec LuxCore2.4alpha0 OpenCL, build 20200430.12: 5325 rays/sec LuxCore2.4alpha0 CUDA, build 20200430.12: 5079 rays/sec LuxCore2.4alpha0 OpenC...

Dade wrote: ↑

Fri May 01, 2020 1:12 pm

A 970 GTX can not be 7 times slower than a 2070 RTX

Indeed! I dont' understand if it can be something broken on my system or not...
I tested both with Azure-built and self-built binaries, results are the same.

Here are results with GTX970 (2.3 vs. 2.4 build 20200430.12): LuxCore2.3.jpg LuxCore2.4alpha0_OpenCL.jpg LuxCore2.4alpha0_CUDA.jpg On this card CUDA underperforms OpenCL quite a bit... :? Anyone else with this or similar GPU series can confirm? P.S. With the very latest build, LuxCoreUI exits withou...