Blender Freeze OpenCL Render

[dobe]

Hello,

i have a problem. if i try to render with openGL (GTX 770 and 1070). Blender freeze and crash. with one or both cards the same error occurs

i use Blender 2.79a Release Candidate.

if i try the same scene in Blender 2.79(11.9.'17) i can render with my GPU's but have the problem with the missing materials

Is there a solution?

[B.Y.O.B.]

(I guess you mean OpenCL, not OpenGL)

• Is this with the latest alpha5 version?
• Are you using the latest graphics card drivers?
• Can you post a small example scene that crashes on your PC?
• Does it happen every time you start a final render or only sometimes?

[dobe]

(I guess you mean OpenCL, not OpenGL)

i use alpha5

and i have found the problem = the material

i have mixed velvet and cloth material. GPU crashed. if i switch the material i have no problems

[Dade]

It is always the same problem with NVIDIA compiler: you can choose between endless compiling times or having the driver to crash.

It is even more weird because the scene works fine on Linux while it crashes on Windows on my GTX980. No problems with the AMD R9 290X.

I'm looking for a workaround but it should be something NVIDIA (with the NVIDIA's budget) should fix, not me

[kintuX]

It is always the same problem with NVIDIA compiler: you can choose between endless compiling times or having the driver to crash.

It is even more weird because the scene works fine on Linux while it crashes on Windows on my GTX980. No problems with the AMD R9 290X.

I'm looking for a workaround but it should be something NVIDIA (with the NVIDIA's budget) should fix, not me

Most likely they simply don't know about it...

[Dade]

I attached at this message the version "slow to compile but it works" of the pyluxcore.pyd. This one compile and run the above scene without problems

[dobe]

thx

but, how can i use this byd-file?
Sorry, I'm a luxrender newcomer

Another question. Are the light groups already available?

[B.Y.O.B.]

Go to the place where BlendLuxCore is installed (on Windows this is %appdata%/local/roaming/Blender Foundation/Blender/2.79/scripts/addons/ I think).
Put the pyluxcore.pyd file in the bin folder (overwriting the old pyluxcore.pyd).

If you don't know how to find the Blender addon directory, you can also open the packaged BlendLuxCore.zip, replace the pyluxcore.pyd there and then install the zip from Blender user preferences like normal.

Another question. Are the light groups already available?

No, not yet.

[dobe]

thx - I'll try it

[acasta69]

Is there a recommended version of the nVidia drivers? Or is it always best to have the latest?
I have just tried to render the scene: first it crashed blender some times, then I switched materials as suggested by dobe and this time I had BSOD on Windows 10.
I have rather old drivers, as they were giving not too many problems...