I just tested a scene we are working on, by mistake I used the OpenCL configuration before, with the latest BlendLuxCore 2.5, downloaded today, and this is the result:
OpenCL - 2:34:
CUDA / Optix ( I assume it is using Optix because it's an RTX card) - 2:43 :
Both renders with the kernel already compiled.
What's going on here?
RTX2080Ti - OpenCL faster than CUDA / Optix?
Forum rules
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Re: RTX2080Ti - OpenCL faster than CUDA / Optix?
Rtx 2080ti i think. It is in The title.
Re: RTX2080Ti - OpenCL faster than CUDA / Optix?
It is not normal. The rendering time is very short so it may something in the pre-processing too. How is the reported samples/sec ? Do is happen for a 10mins rendering too ? Do you have a test scene ?
Re: RTX2080Ti - OpenCL faster than CUDA / Optix?
Hey Dade.
I can send you this scene privately, it's from a project but if it's in private I have no trouble.
I have to deliver this morning, I'll try to do some tests to answer your questions.
I'll try to speak you on Discord to send you the scene, today, but a bit later
Thanks!
I can send you this scene privately, it's from a project but if it's in private I have no trouble.
I have to deliver this morning, I'll try to do some tests to answer your questions.
I'll try to speak you on Discord to send you the scene, today, but a bit later
Thanks!
Re: RTX2080Ti - OpenCL faster than CUDA / Optix?
You can export the scene in LuxCore format in CLAY mode and send me just the .cfg/.scn/etc. files zipped (may be it is small enough at that point for a forum PM). It should be enough.
Re: RTX2080Ti - OpenCL faster than CUDA / Optix?
I prefer to send you the whole scene with all the shaders and lighting, with everything, but I can send it to you with a link from a PM here, no problem, as soon as we deliver the project I'll prepare it
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AMD or NVIDIA GPU ? Version of LuxCore used ?
First of all check if you have a working OpenCL installation by running LuxMark i.e. if it doesnt work, there is a problem with OpenCL drivers.
First of all check if you have a working OpenCL installation by running LuxMark i.e. if it doesnt work, there is a problem with OpenCL drivers.
Re: RTX2080Ti - OpenCL faster than CUDA / Optix?
I said all that information in the first thread.
And drivers are correctly working in both systems.
Keep in mind that OpenCL is being FASTER than CUDA, not SLOWER (which is what should be expected with a 2080Ti)
I have to upload the scene yet, I had no time basically
And drivers are correctly working in both systems.
Keep in mind that OpenCL is being FASTER than CUDA, not SLOWER (which is what should be expected with a 2080Ti)
I have to upload the scene yet, I had no time basically