Raspberry Pi interview: Eben Upton reveals all (Linux User)

Raspberry Pi interview: Eben Upton reveals all (Linux User)

With DSP it's probably first, with GPU it's second. Single IF may require hundreds of ticks to handle on contemporary GPUs and their frequency is usually much smaller then frequency of contemporary CPUs.

The same processing unit can be used to process other execution threads (that's why you need hundreds of thousands threads to fill the pipeline on GPU with ~1000 execution units), but if it's single-threaded OS… well, 99.99% of GPU power will be spent in waiting.

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