Sony Vegas Pro 10 GPU ..What, where, when….No Way!

[Dave Haynie]

RAID5 systems will spend SOME CPU time working out the format. It’s not like they have crazy work to do to figure out where to send what.. they simply have to create the redundant data, so there’s a fair bit of extra processing. It’s nothing close to consuming a whole core on a modern system, but it’s a waste of a good bit of x86 code.

This problem is solved by using a “hardware” RAID… meaning, you get a PCI card with a tiny RISC processor of some sort on it, and the RAID software runs there, not on your PC. At that point, writes will at least seem fast, since the card will grab buffers from PC memory and do all the computing of distributed parity data out on the card.

RAID systems to technically slow down seeking. Rather than hit the average of your single drive, a seek has to wait for the worse case of each drive involved. This is usually offset by the fast that you’re loading N times as much data per seek. But if your system isn’t buffering enough, this is also a problem.

-Dave

[Matt Berg]

Sorry guys I’m new, but is the AVC plug in included with Vegas 10? or do I have to get it somewhere else? If it is included, how do I enable it?

Thanks,

Matt

[Davd Keator]

Hey guys,

Thought I’d try Vegas 10 again now that I have the Sandy Bridge I7 2600k CPU & GTX 560 Ti & 16gig. I love this computer it’s actually faster than my 980x and way less expensive. Anyway:

Vegas 10:

RED footage 19 second clip – 4k raw
Color correction
Chroma key
Film grain

Sony AVC at default 1280x720x30p setting:

GPU Enable:
GPU: 22%
CPU: 62%
Time:0:28 seconds

CPU only:
GPU:6%
CPU:92%
Time: 0:24 seconds
——————————————–
Well, I guess it is still things that make you go HMMM…
Nearly the fastest GPU on the market is worthless for rendering in VEGAS!

I can’t wait when they advertise that they support red rocket! 0_o

[Jim Scarbrough]

It might be better that Vegas 10 doesn’t leverage the GPU more, seeing as they’re using the CUDA API.

AnandTech and TomsHardware have recent articles with good info on the current GPGPU rendering technologies – Nvidia’s CUDA (as used by Vegas 10) and ATI’s Stream. Although CUDA was faster than Stream, it seems to generaly produce noticeably worse video quality to achieve that speed. The article is focused on Intel’s QuickSync technology, which holds great promise. https://www.anandtech.com/show/4083/the-sandy-bridge-review-intel-core-i7-2600k-i5-2500k-core-i3-2100-tested/9

One interesting comment in the article, “Both AMD and NVIDIA have fixed function video decode hardware in their GPUs now; neither rely on the shader cores to accelerate video decode.” The article mentions that the same hardware used to accelerate decode is also used to accelerated decoding. So a lower-end card should provide similar benefits to a higher-end card with more shader units, leaving only the amount and speed of the video card’s RAM as a variable.

[Jim Scarbrough]

David: Your April 7 post started me researching the Sandy Bridge processors and I’m now in the process of upgrading with an i5-2500k/H67 combo. (H67 just in case Sony adds QuickSync support to Vegas!)

Everything I’ve read indicates that HyperThreading slows down most rendering engines, including Vegas. Do you have HT enabled or disabled? If it’s enabled, could you try disabling it and rendering your test clip? I think it would be valuable info to those reading this thread.

[Jim Scarbrough]

Dave – you already answered the HT question in another thread:

https://forums.creativecow.net/thread/24/918270

Anyone reading this thread will want to read that one as well. Lots of great info.

[Davd Keator]

Jim,

Just for the heck of it, I installed Vegas 10 their lates iteration just give it a lookover one more time.

Vegas 10 does do a nicer job of video preview due to the gpu access. I have noticed my Red .3rd files much better looking in preview mode which makes lining up effects better over all.

I am running the I7-2600k OC: 4.2GHZ.

I noticed a very slight decrease in performance with Hyperthread off… Like 1.3% I decided that 1% wasn’t worth turning off due to other apps that I use actually work just a hair better.

For your rig: the I5-2500 sound interesting, you only seem to loose 2megs of cpu cache, however, 2 megs might be a critical level of info you may be missing out on. If your CPU needs input, you will be slowing down the cpu as it has to wait for your ram or worse your HD to give it the data it so desperately needs.

But then again, my 980x has 12 megs and I noticed no diference dropping to 8 megs cache, but both cpu are at 2 megs per core. Your i5 is at 1.5 megs per cpu. My thoughts are it will be measurable yet negligable.

My thoughts for your rig:

1: i5-2500k OC-3.8 to 4.2ghz with Hyper212 CPU cooler.
1b: H67 or better p67 pro from asus
2: Nvidia GTX 450 stock clock.
3: 8 gigs o ram – 16 if you like over kill.
3: 2 Harddrives| 1 or 2 TB drives
C: Sytem Boot partition at 80 gigs.
D: Backiup appz / files Partition – 150 gigs
E: Library copy of all your media, clips, music etc…
—–
F: Work drive – full 1 or 2 tb drive for work.
(keep less than 50% full)

This is about as fast of a system you can get…

Don’t count on Vegas incorporating Intel tech anytime soom…

Also if you use integrated graphics, you share your system ram with your apps and video. Your video preview and over all system will be laggy and just plain not fun…

[Eric Kirk]

Can anyone tell me where the GPU settings are in Vegas Pro 10 and what settings are optimal for using GPU?

Thanks,

Eric

Eric D. Kirk
http://www.kirkproductions.com

[Davd Keator]

The only one that I know of is when you select a sony AVC mp4 codec.

When you hit the custom button: at the bottom of the video tab:

Automatic (recommended
Render CPU only
Render GPU if available

Thats it…

President: http://www.VertexMedia.com

[Earle Del rosario]

With the best NVIDIA card (for Vegas) how is the rendering speed of VegasPro10, compared to the latest PremierePro ?