Q for Pr 2019 and 2020 users with a 2019 Mac Pro

[Jim Curtis]

I seem to be getting better performance using the Open CL renderer than with Metal.

Is anybody else seeing this?

BTW, both are noticeably slower than using CUDA on my 2012 Mac Pro and High Sierra on Pr 2018.  Another giant step backwards.  I'm presuming (non-delusionally, hopefully) that Metal and Adobe's ability to utilize it will catch up to CUDA in its ability to compete, performance-wise eventually.  Sooner rather than later would be nice.

[MyerPj]

OpenGL and OpenCL are both depricated by Apple, so you'll need to go to Metal sooner or later. CUDA is of course the fastest as Adobe is specifically using that technology. I have no idea if they will ever support Metal to the same degree, but I doubt it.

https://www.geeks3d.com/20180605/apple-announces-that-opengl-and-opencl-will-be-deprecated-in-macos-...

[R Neil Haugen]

They are working on better supporting Metal, so eventually it will improve. And also working on better AMD support in general as AMD cards are pretty hot especially for the price. They're going into SO many machines.

Neil

[Jim Curtis]

I wish they'd get on it.  I'm not sure if this poor Metal performace is an OS thing or an Adobe thing.

My hopes were raised when I read on MacRumors that NVidia might come around and write drivers for Catalina, which means I might be able to stick the Titan X in my box and use CUDA again.  But, I think Adobe would have to play along to use it in Ae and Pr, right?

One stark difference is with Red Giant Colorista IV, which on Pr 2018 with CUDA was smooth as butter, played in real time, and rendered quickly.  On Pr  2019 and 2020, the GUI is very laggy (two seconds can pass between making adjustments and seeing the result on the Program tab), making adjustments are jerky, there's no real-time playback with it applied, and rendering takes about 5X longer (!) than it did in my old 2012 CUDA equipped Mac Pro.  As I mentioned previously, it's faster with Open CL than Metal selected as the renderer.  IOW, Colorista IV is practically unusable on this new super duper machine.  Back to Lumetri, which is the cat's meow as far as response.  Now that it's the New Roaring Twenties, I'm using terms like "cat's meow." 

23 Skidoo.