Today I was working on a 2-minute video consisting of a 50/50 mix of ProRes HQ footage from BM Video Assist 4K footage and H.264 iPhone X clips. Resolve was configured to use all three GPUs with auto selection of the compute engine. First time it took 26:29 to render, which was truly unexpected given my hardware setup. While it was doing its thing, I entertained myself with watching Activity Monitor GPU window. It was surprising to see that both FirePro D700 units were working their asses off, while Radeon Pro Vega 64 was clearly slacking with a load of less than 50%.
Just to see what happens, I deselected both D700 and manually selected Metal. This time, the same very video took 12:41 to render, which was consistent with amount of noise reduction applied.
So, why am I telling you all this? Until tonight I was a true believer that three GPUs were better than one, and while the most powerful unit would do the heavy lifting, its weaker brothers would be just helping here and there. Apparently, I was wrong. Or, perhaps, I do not understand how to configure the system correctly...
Did anyone experience the same thing? If not, what am I doing wrong?
Just to see what happens, I deselected both D700 and manually selected Metal. This time, the same very video took 12:41 to render, which was consistent with amount of noise reduction applied.
So, why am I telling you all this? Until tonight I was a true believer that three GPUs were better than one, and while the most powerful unit would do the heavy lifting, its weaker brothers would be just helping here and there. Apparently, I was wrong. Or, perhaps, I do not understand how to configure the system correctly...
Did anyone experience the same thing? If not, what am I doing wrong?
Leica SL/BM Video Assist 4K, Panasonic Lumix DC-S1
DaVinci Resolve Studio 18.6
Mac Studio M1 • 32GB RAM
DaVinci Resolve Studio 18.6
Mac Studio M1 • 32GB RAM