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CS6 CUDA or OpenCL on 2012 iMac with 680mx?
Ok, so I’ve successfully altered the cuda and opencl text files and my 680mx appears to be functional. I can use either OpenCL or CUDA acceleration.
Which is better for Premiere? I’d assume CUDA, but being that I’ve had to hack the config to get it to use the 680mx I didn’t know if there were any perils. For example on my 2011 iMac with ATI, I could get OpenCL working, but after too much scrubbing around, the system would lock up.
I’m just playing around in the timeline right now with some Canon footage at 24p. It all plays back fine but I have a yellow bar. Normal? I created the sequence by dragging a clip to the “new item” icon in the project panel.
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5 Replies
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A lot of good info on CUDA Here.
https://blogs.adobe.com/premierepro/2011/02/cuda-mercury-playback-engine-and-adobe-premiere-pro.html
Tom Daigon
PrP / After Effects Editor
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid -
Excellent thread. So basically, from the gist of it, CUDA is the way to go if you have it. And OpenCL was added in CS6 and supports nearly all of CUDA, with most of the exceptions seemingly being “blur” oriented effects. Sound about right?
I’m impressed. I’m playing back some 1080 24p DSLR h264 footage with 32bit Volumetrix (from noise industries) effect on it for glowing light rays and it’s playing back full quality and not dropping frames.
Just seems odd that I recently watched an Avid demo from NAB where the girl really harped that h264 DSLR footage can bring even the best processor to it’s knees, yet here I am playing it un-transcoded, un-rendered with light rays and glow emanating on a measly little iMac.
I’ll have to try the same effect in FCP X and see if it plays back without dropping frames.
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Glad you are getting such fine performance!
Tom Daigon
PrP / After Effects Editor
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid -
Hmmm, now it suddenly is giving dropped frames. (orange dot thing) Does it cache frames as you play them like After Effects? it seems that right after I add an effect, it doesn’t play very well. But after watching it a few times it seems to start playing.
Also seems that with CUDA or OpenCL on I get yellow bars, while with GPU I get some yellow some red, yet the performance is the same. Even the light rays I mentioned play with just GPU. I was wrong though, it was giving the orange dot, not green, so it was dropping frames, however imperceptibly.
Tried the same effect in FCP X and oddly I could scrub through it much more cleanly and smoothly, but it dropped more frames than Premiere on playback. Both are very amazing compared to how it would have fared in FCP 7.
But still not sure that OpenCL or CUDA is doing anything. Is there some ultimate test? CUDA is certainly doing something in AE as now I can extrude text in full rez and play around without my computer feeling like it’s in quicksand.
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[Bret Williams] “Hmmm, now it suddenly is giving dropped frames. (orange dot thing) Does it cache frames as you play them like After Effects?”
Yes it does. And those are some of the files you deleted in the Media Cache folder.
Dont worry about the timeline colors. They are not the same as in FCP.
https://blogs.adobe.com/premierepro/2011/02/red-yellow-and-green-render-bars.html
I find the Drop Frame indicator you can turn on in CS6 is the best guide to go by when judging performance.
Here is what CUDA does.
https://blogs.adobe.com/premierepro/2011/02/cuda-mercury-playback-engine-and-adobe-premiere-pro.html
Tom Daigon
PrP / After Effects Editor
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid
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