Hey, I have the same problem with latest benchmark scene for Luxcorender 2.1. While using cpu only it's working, on opencl it crashes Blender in the same way. I'm using GTX Titan Black.frank_yifei wrote: ↑Wed Feb 20, 2019 2:27 am For a test scene, I tried to make the caustic result look smoother so I increase lookup radius. I found a problem.
using opencl + photonGI, setting caustic lookup radius higher will crash blender. The error message is "ERROR: clEnqueueWriteBuffer
Error: Unrecognized Exception". Path cpu works well with caustic, i can set lookup radius to any value, like 100.
Indirect cache can have lookup radius at any value, under opencl or cpu
My computer have 4 core intel cpu, nvidia 1060 6gb.
PhotonGI cache
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Re: PhotonGI cache
Re: PhotonGI cache
I have a scene where the caustic cache shows a brightness difference compared to Bidir+Metropolis.
Light source is a meshlight.
Light source is a meshlight.
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Re: PhotonGI cache
I have instant crash when I try to render any scene with caustic cache (path CPU).
I have 8 GB RAM. Maybe it's low RAM related?
I have 8 GB RAM. Maybe it's low RAM related?
Re: PhotonGI cache
I should have fixed this problem.
Re: PhotonGI cache
Does it happen with any scene ? For instance, including the one posted above by B.Y.O.B. ?
Re: PhotonGI cache
Your test scene is working fine here on my Linux+GTX980. Making the radius larger, it will make also the rendering slower. May be, it becomes too slow and the driver kick in and kill the GPU kernel execution.frank_yifei wrote: ↑Wed Feb 20, 2019 2:27 am For a test scene, I tried to make the caustic result look smoother so I increase lookup radius. I found a problem.
using opencl + photonGI, setting caustic lookup radius higher will crash blender. The error message is "ERROR: clEnqueueWriteBuffer
Error: Unrecognized Exception". Path cpu works well with caustic, i can set lookup radius to any value, like 100.
Indirect cache can have lookup radius at any value, under opencl or cpu
My computer have 4 core intel cpu, nvidia 1060 6gb.
Given a radius causing the crash, can you try to cut in half (even multiple times) the caustic cache size ? Reducing the size will increase the rendering time again, so if my theory is correct, it should stop crashing at some point.
I'm working on this "larger radius => slower rendering" problem.
Re: PhotonGI cache
I had a similar problem with LuxCoreRender v2.1 benchmark scene with an older NVIDIA driver. Have you tried to update the drivers ?mwitalinski wrote: ↑Wed Feb 20, 2019 8:59 am Hey, I have the same problem with latest benchmark scene for Luxcorender 2.1. While using cpu only it's working, on opencl it crashes Blender in the same way. I'm using GTX Titan Black.
Re: PhotonGI cache
It didn't crash with B.Y.O.B.'s scene!
However it always crashed before, even with a default cube and sun. So, I assume, it's something with my settings.
Re: PhotonGI cache
Under what sort of circumstances should I turn OFF the 'USE PHOTON GI CACHE', in the Material Output node?
Thanks
Thanks