OTOY Forums

Hi,
I'm evaluating the plug-in (running the demo) for Maya running on Windows 64 bit with a K4000 card and the render is PAINFULLY slow. 8 minutes for a plane, a cone and a cube with Octane materials, a light, sun and camera. Something must be horribly wrong!

Any advice?

Cheers!
-Dutch

Hi Dutch,

What is the max samples per pixel (ie: what quality does the 8 minutes get you?)
It could be that the samples per pixel is set higher than you need, and you can stop rendering well before the 8 minutes.

Out of interest the K4000 looks like it will render a little slower than a GT650ti.
The Quadro cards are generally not the best for octane (slow for their cost).

Thanks
Chris.

Hi Chris,
Yep, the Max Samples were left at the default of 1600. When I dropped them down to 100, my 8 min render fell to 4 seconds! Yay! Thank you!

Any guidelines/suggestions for determining the best max samples?

Thanks Again-
Dutch

It really depends on your scene.
I think in most cases you can just leave the max samples high and just save the render when you feel it has reached a low enough noise level for you.
Leaving it longer just means it will clean up more... (unless it is already very clean which is probably the case with a single plane after 100 or so samples per pixel). Generally the more complex your scene, the more samples per pixel will be needed to get an acceptably noise free image.

Thanks
Chris.

Also, with Octane rediscover the IPR button more than the render button. That is it's strengh. You are probably using the direct light kernel. Explore the path tracing too even if you need to lower your max depth to something like 4 due to your GPU.