Indigo RT

[bravoddb]

I've just installed a GeForce gtx 470, and then I tryed a model, not really big, but i don't feel the speed, am I doing some thing wrong? at renderings settings appears: GeForce GTX 470 (cuda) and GeForce GTX 470 (openCL), both feels like same speed.

It was a daylight rendering, in the promotional video, how many video cards has the PC? how many PCs?

Thanks

[CTZn]

The demo was recorded with two i7 920s and one Q9300 in network rendering mode; we regularly see over 1M samples per second in many scenes, even without GPU acceleration

There are more samples per second while using GPU acceleration, but realtime movements of the camera are more responsive without.

Also Indigo is currently hybrid, the GPU and CPUs are working together. That means that the GPU is in general waiting for CPU cores to complete their tasks, not the reverse usually considering modern graphic boards. You'd need a lot of cores to outperform one's parallelism I guess. Say, a good CPU.

A complementary point could be that Indigo as a whole may be too sophisticated to fit entirely under a GPU environment as of today.

[Zom-B]

GeForce GTX 470 (cuda) and GeForce GTX 470 (openCL), both feels like same speed.

Indigo has a CUDA render mode and a openCL render mode. Both target to do the same using different approaches.
Speed differences here based on different code and driver situation, but in general both should be quite similar since they target to squeeze all processing power out of the GPU.
In the end it doesn't matter how hard you squeeze since the GPU can only deliver 100%, using CUDA, openCL or whatever else...