CUDA

brandonb wrote on 7/25/2011, 7:26 PM

I have a very fast 8-core I7 CPU, but a slower NVIDIA video card.

The render dialog box indicates CUDA is available (as expected). Render runtimes seem long (using default 1920x1080-60p Sony AVC template, rendering to mp4): 9 sec clip takes 1:19. Only 5-6 CPU threads are being used, and only ~30% at that. Looking at the Task Manager, FileIOSurrogate.exe is consuming what few CPU cycles are being used (VMS11 using nearly nothing).

On a similar machine with an ATI card (obviously no CUDA), VMS11 I saw all 8 cores being used by VMS11.

So bottom-line I <think> VMS is using CUDA (on a slow video card) instead of rendering on my very fast CPU.

How do I get VMS to <ignore> CUDA?

Thanks,
Brandon

Comments

brandonb wrote on 7/25/2011, 8:01 PM

Found the option in the render dialog box (Encode Mode):

17 sec clip

With CUDA (on a slow graphics card): 2:29
CPU only: 0:56
- seems to only utilize ~6 cores

PremierePro5.5: 0:40 (MainConcept encoder)
- consistently uses all 8 cores

Chienworks wrote on 7/25/2011, 8:41 PM

I've never had a GPU-enabled card to play with so i don't see this option on my screen, but i'm pretty sure i've seen lots of posts mentioning a "use GPU" toggle checkbox right in the rendering dialog box. Uncheck it.

Markk655 wrote on 7/27/2011, 10:00 AM

Chienworks, Absolutely correct. There is an option in the render dialog.

Also, if you do a search in the forum, you'll see various render test comparisons with Cuda vs. non-Cuda ( for VMS10 )