Only 6.5 fps with 2x Pascal GPU's on 12.5.2

[Simon Dunne]

Hi,

So i'm doing some VR rendering in W10. 3840 x 1920 is the project setting and export setting. I've got 2x Pascal GPU's running in CUDA (todays driver) Manual (headless) mode, 1 is also acting as the UI. Source footage is cineform 422, but very dark. So, with both the built in NR in 12.5.2, or using neat video, i'm only getting about 6.5 fps on the render. This doesn't matter if i render to cineform 422 in .AVI, cineform in .MOV (still 32 bit??) or DNxHR in .MXF OP1a.....it's always the same fps. In GPU-Z, i can see that both GPU's are being heavily used, but i'd have thought i'd get closer to realtime with 2 pascals? No??

Thanks, Simon

 

[Jay Smith]

Heavy noise reduction doesn't really care what your setup has, its always a bit slow!

 

[Peter Chamberlain]

Do u have free or studio version? Do u only have one UI monitor on one of the cards? What's the render speed with no NR?

 

[Simon Dunne]

Hi Peter,

We're using the Studio version. We had 2 monitors plugged in (good thinking!) and have now done your suggested tests;

1: Render without NR and note down the FPS. - 17 FPS
2: Unplug monitor 2, reboot, then render out again without NR. - 17.5 FPS
3: Keeping the second monitor unplugged, render out with NR turned back on. - 6 FPS

The team are looking at a new machine, as there's no room for a third GPU, but i think we need more grunt.

Thanks, Simon

 

[Raphael_Carpenter]

DaVinci is not a king-of-speed and it's very resource-hungry software.
I have latest i7, 32GB ram, multiple premium SSD's and overclocked GTX 980Ti and still have many issues with performance.
I don't think is there any beefy config (you can spend up to £10.000) for comfy work in DaVinci Resolve.

 

[Peter Moretti]

Simon, what are you getting rendering out to H.264?