Rendering with GPU slower than my processor rendering?

[Frederic Baumann]

I have no clue about Boris FX GPU usage, however a thing you could do to investigate is running a GPU monitor such as evga-precision (as illustrated here: https://www.fbmn-software.com/en/gpu.html): the load % will show you if the GPU is used or not.

Also, you might want to check that you have the right GPU driver. For instance my GPU-accelerated plug-ins require CUDA 4 to be installed, so you have to install a nVidia driver version recent enough to support CUDA 4 (270.61 or above for GeForce cards), otherwise the GPU will just not be recognized. Not sure at all this also applies to Boris FX, but you might want to check.

Finally, it might happen that your GPU is slower than your CPU, or that memory transfers between mother board and graphics card are too slow, so that in the end, the overall computing time is longer than keeping everything on the CPU. However, with a Quadro 4000, this would be surprising. A good way to check this is using the GPU monitor: if your GPU is almost 100% loaded, then it does all what it can, but cannot go faster than your CPU (which patiently waits for results, having time for other Vegas sessions should you have any…)

Hope this helps,
Frédéric

—

Want to Match Colors between clips? new plug-in here.
Check GPU-powered FBmn Software plug-ins to fix White Balance and Exposure issues.

Want to learn on Sony Vegas Event Pan/Crop tool? Watch my tutorial.
Or about Keyframes? Watch this one. French version here.

[Don Cobble]

Frederic,
I downloaded the monitoring EVGA MY GPU is 0 % usage????? and my CPU is only useing about 20%?? it was 100%. HELP!!!!!
please

PC
I7 2.8 Ghz 8GB Ram
Win 7 Pro 64bit OS
PNY Quadro 4000

3-4 TB HD
Vegas Pro 9 32bit & Vegas Pro 9 64bit & Vegas 10 32bit & Vegas 10 64Bit

Camera
Sony EX1 shoot in 1920×1080 30P