> Quote -   I'm not geared for GPU rendering on either Octane or Lux. :blushing:  All of my desktops have nVidia cards, which leaves Lux out.  Lux wants OpenCL (think AMD/ATI/Radeon), and nVidia throttles their cards' OpenCL .  Octane wants nVidia's CUDA, but my cards are too old to have much CUDA capacity or they are nVidia Quadros, which aren't designed for parallel-processing speed.

I know there is a lot of talk on different forums about how poor Nvidia cards perform with OpenCL compared to ATI (with some people implying that they are almost non functional), but the speed of SLG with nvidia cards is still quite impressive. Take a look here to see some benchmark scores, there are a lot of Nvidia cards in the top GPU scores :blink:

The attached image is a screen grab of the LuxRender GUI of a Poser scene sent to Lux SLG via Reality3. Note that Lux/SLG (SLG3) is running at 4.26 MS/s (Million Samples per second), not too bad for a card that "won't work" with SLG. I'm sure that OpenCL probably runs better on ATI cards, as they are optimizing for OpenCL. Nvidia cards still do very well, however they do much better running Cuda based code.

Like Paolo, I definitely wouldn't recommend using SLG for rending now, it just isn't quite ready for prime time, unless you really want to dig under the hood to get it working well. But it can be fun to tinker with from time to time (just be aware that you can easily cause system instability). Note also that the attached image shows 3 devices. One is my GTX 670M, one is the onboard Intel chip, and the third must be the CPU because running SLG pegged the CPU (and this was SLG, not the hybrid rendered, hybrid never gets close to 1MS/s on my machine). This just shows how SLG is a bit of a black box.

 

PS: Your set up is killer - bet you don't need to heat your "server room" in the winter 

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