alt Hacker NewsInteresting - will see if I can toy with it.
Word of caution though. I’ve found that on my machine (Linux/nvidia) unaccelerated video is way more power efficient. The second video is playing it kept the GPU in a high power state and that uses incrementally more power than the cpu doing software decoding
I had always assumed gpu would obviously be more efficient until I measured it
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Interesting.
through, from a pure power POV you probably would want to exclusively use the integrated graphics most CPUs have (1) with the external GPU powered down for most "daily/office-style" usage (browser, news, email, coding (not gamedev,etc.)) and only switch to external GPUs for Gaming, GPGPU, and I guess some edge cases like too many monitors or insisting on running a coding IDE at >240Hz ;)
EDIT, forgot the food note (1): Even the very very minimal GPU recent (non APU) AMD processors have are good enough for many peoples daily "office" needs.
I haven't been able to get Firefox GPU acceleration to work on Linux in forever.
i am bit confused, what does it mean by vulkan video decoding? does it mean that it will be done via gpu or via hardware accelerator sepcific to decoder via some vulkan extension? if it is via extension gpu would be free to do gpu specific things?
All modern CPUs come with an iGPU, so it's unlikely to be software decoding. Just iGPU driver's decoder being more efficient than dGPU one.
the story is kind of complicated, it's impossible to guess the culprit, you must profile. HDR content for example can sometimes incorrectly request a bespoke tonemapping instead of a video engine silicon one, like it does in libavcodec, or you have a privacy setting in your browser that breaks GPU compositing. so many little things can go wrong unfortunately.
Are you using nvidia-vaapi-driver? If so, you'll need to set `CUDA_DISABLE_PERF_BOOST` in your environment.