[T0M0]

I installed new graphics card in system and somehow Maxwell can't detect correct VRAM on this GPU (which is 12GB).
Every time I load some finished scene in Maxwell Render (maxwell.exe) I can move sliders and viewport refresh in realtime,
but when I turn on Scattering in Simulens, Fast Preview turns off and following error pop-ups:

ERROR: - Error running GPU Simulens (-4): Disabling simulens. Disabling Fast Multilight Viewer.
ERROR: - OpenCL error: Memory allocation failure. Your GPU does not have enough memory.
ERROR: - OpenCL error: Cannot continue. Disabling Fast Preview.

GPU is NVIDIA GTX TITAN X 12GB

Could it be fixed ?

[Mihai]

It happens also with very low rez tests?

[T0M0]

I tried debug it with simball scene - default setup, no changes, I just turned on MultiLight to Intensity mode.

Started from default camera resolution (500x500) everything worked perfectly. Sliders changes, simulens, tone mapping updates in realtime.

Then I increased resolution in steps and when the camera resolution was set to 1700x1700 it started. When I click on Scattering, FastML turns off and error shows in console

(there is no GPU intense program running in background which could affect the behavior of Maxwell)

[Mihai]

I do know that Scattering needs a lot of memory but it doesn't seem right that it would need more than 12GB for a 1700x1700 render. Hopefully Brany can offer some insights.

[Brany]

Hi!

The problem could be the size of the memory allocation needed for simluens, rather than the whole amount of free memory available. I mean, you can have 10GB available on your GPU, but probably your card is not able to allocate memory for an image/buffer greater than 4096x4096 (256MB at most) or 8192x8192 (1GB at most).

I have to do some research to find out if there is a way to solve this in our side. Please be patience

[dk2079]

Hi!

remember this has been discussed before

I also upgraded to Titan X would be really great if we can get the fast preview for the final resolution images (multilight+simulense@4000-5000k)

just stumbled across this, maybe helpful in some way...
http://stackoverflow.com/questions/1247 ... and-opencl

[T0M0]

Thanks for informations guys !

Would be really great if this will work on cards like these in future.

PS: if you need help to test it, feel free to contact me