Cuda rendering in Vegas 12 Build 770

[Phil Seymour]

Not all codecs use GPU for rendering… What were you using?

Windows 7 Pro64, i7 CPU, 16GB RAM, SSD boot drive, GTX 570 Graphics, Vegas Pro 12

[Zach Little]

https://puu.sh/6I76p.png
https://puu.sh/6I77z.png

[Graham Bernard]

_______________________________________________________________

[Zach Little] ” . . . neither of them have any effect on vegas”
_______________________________________________________________

Zach, could you be more specific please? Faster renders? Nothing renders? What exactly?

However, if you are purely referring to Render SPEED then I can tell you I’ve just repeated your Tests on a 3 second Event with the GPU Video Acceleration set to OFF and RAM Preview Build set to 4gb:

1] Render using CUDA when available 1 sec
2] Render using CPU only 5 secs

So, I’m getting a marked speed improvement forcing the CUDA, which would appear you’ve elected.

I don’t know enough to come up with anything conclusive. What driver version for the GPU are you running?

Hope you get it sorted. Keep us informed.

Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge

[Zach Little]

I’m using the latest beta version of the drivers (I’ve tried other versions too), but I’m talking about when I render a video, cuda has no effect on time, it takes the same amount of time as cpu only.

I’m not familiar with how Vegas handles the gpu, like if it only uses it for previews or if it is only used on certain effects.

[Graham Bernard]

Just repeated for a further 8 second:

Forced CPU – 18 seconds
Available GPU – 5 seconds

Big difference.

G

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge

[Steve Rhoden]

Personally, i dont waste my precious editing time anymore trying to
figure out which card works best for CUDA this or for GPU that, Its a
messy confusion and Vegas is not really to blame.

Steve Rhoden
(Cow Leader)
Film Editor & Compositor.
Filmex Creative Media.
https://www.facebook.com/FilmexCreativeMedia
1-876-461-9019

[John Rofrano]

CUDA rendering on MainConcept AVC is a lot faster for me. Your problem may be that you are using a newer Kepler card and Graham and I are using the older Fermi cards which are 4 times faster with Vegas Pro. So it is quite possible that CUDA doesn’t make a difference for you because your Kepler CUDA card is the same speed as your CPU. Think about it… we are see a 4x improvement and your card is 4x slower so you are seeing no improvement… it makes sense.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Graham Bernard]

[Zach Little] ” cuda has no effect on time, it takes the same amount of time as cpu only.”

Zach, read jr’s reply: FERMI v KEPLER.

Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge

[John Rofrano]

[Zach Little] “I’m not familiar with how Vegas handles the gpu, like if it only uses it for previews or if it is only used on certain effects.”

Vegas Pro uses the GPU in two ways:

(1) During playback, it has GPU accelerated FX. The acceleration is turned on and off in Options | Preferences | Video. This obviously affects playback while editing but since rendering requires that you play the video, this will affect rendering times as well.

(2) Vegas Pro comes with several render types that use GPU acceleration to encode the video. Not all render types have this. Those that do will have an option to use CPU or GPU or Auto mode. This will encode the video faster if your GPU is faster than your CPU. If your GPU is not faster than your CPU then you will see no gain or even a slower render time.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[John Rofrano]

Yea, the key thing here is that GPU’s are not always faster than CPU’s. It is totally possible to have a GPU that is slower then your CPU.

In the case of Vegas Pro, it’s even worse. When NVIDIA changed their architecture, it was not completely backward compatible. Vegas Pro works faster with 4xx or 5xx Series NVIDIA cards than 6xx or 7xx Series cards. Counter to what you might think but true.

This is why I’m starting to believe that Vegas Pro editors would be better off buying newer AMD Radeon cards rather than newer NVIDIA cards until Sony address this.

~jr

http://www.johnrofrano.com
http://www.vasst.com