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A comment on VkFFT – Vulkan Fast Fourier Transform Library. Parent comment

Re:VkFFT – Vulkan Fast Fourier Transform Library by reitzensteinm on Sunday September 27, 2020 @10:04PM (#24612229)
You can read off a GPU in 10us, which is just a single sample at 96khz.

If your entire stack lived in the GPU, and you're just reading out the result, this is trivial.

If you're constantly copying buffers back and forth because some effects are implemented in the CPU and some in the GPU, not so much!

It's probably the case that a full stack GPU implementation would blow what we have out of the water, but you'd lose your entire ecosystem in the process, so it's probably never going to happen.

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Re:VkFFT – Vulkan Fast Fourier Transform Library by cma on Sunday September 27, 2020 @11:43PM (#24612755)
Sony is trying some stuff along those lines with the PS5. They have one compute unit on the GPU with a few features fused off that is dedicated to audio.
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Re:VkFFT – Vulkan Fast Fourier Transform Library by Twirrim on Sunday September 27, 2020 @10:28PM (#24612352)
What's the latency for integrated GPUs?
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Re:VkFFT – Vulkan Fast Fourier Transform Library by reitzensteinm on Sunday September 27, 2020 @10:40PM (#24612428)
Crystalwell had a shared CPU/GPU L4 cache with ~50ns latency. I don't think there was a programming model where you could bounce data back and forth that fast, but I don't see a reason why the hardware wouldn't be capable of it.
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