Re:Apple Silicon M1 Die-Shots
by viktorcode on Sunday December 27, 2020 @02:58AM
(#25549597)
From what I've read it seems to be different from Intel's UMA. It's cache-friendly single pool of memory directly accessible from different cores of the SoC: CPU, GPU, NPU etc. Since there's no division of RAM between different parts of the SoC, copying operations aren't needed.
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I also read somewhere that they made sure the data formats used by the various modules are identical. Without that, you have to copy data to do format conversions. I don’t know how much of a problem that is in general, though.