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OpenCL and Premiere Pro CS6
Beginning with Premiere Pro CS5, we have been using the GPU on certain graphics cards to process many things within Premiere Pro. This GPU processing (sometimes loosely referred to as “hardware acceleration”) relied on CUDA, a set of technologies from Nvidia.
We got a lot of requests from people using computer systems that couldn’t use CUDA—such as those with built-in GPUs from AMD—to expand our GPU acceleration features to also use OpenCL.
So, we did.
In Premiere Pro CS6, nearly all of the things that can be processed with CUDA on certain Nvidia GPUs can also be processed by OpenCL on certain AMD GPUs.
Premiere Pro CC introduces support for both CUDA and OpenCL GPU architectures on both the Mac and Windows platforms, which results in a dramatically enhanced list of certified GPUs, the full list of which follows this post.
This time, AMD says all of its A-series APUs are supported—as are Radeon and FirePro graphics cards. The OpenCL acceleration purportedly enables "real-time edits, application of dozens of effects, support for the new Lumetri deep color engine and multi-stream and mixed format accelerated workflows with AMD Eyefinity multi-display technology." Video formats up to 4K Ultra HD are supported.
The performance improvements are, of course, substantial. On an A10-6800K processor with integrated graphics, AMD says OpenCL acceleration yields a 4.3x speedup when one applies a three-way color corrector filter to a 1080p video and exports that video to iDevice format. The quoted processing times are 46.6 seconds with OpenCL enabled and 246.1 seconds without.
