I don't understand on one of the later graphs the core to core latency for strix halo goes out to 32 cores but he says only has 16 cores?

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wtallis 13 hours ago | parent [-]

AMD's cores have SMT, allowing them to run two threads at a time and appear to the OS and its scheduler as two logical cores despite being implemented as a single physical core.

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Neywiny 13 hours ago | parent [-]

What pattern in the data shows that's what's being measured? I would expect to see basically 0 latency between adjacent "cores" then since L1 is shared per thread?

	▲	monocasa 12 hours ago \| parent [-]
		Co resident threads might not get any speed up here since coherency instructions are functionally operations on the L2 cache.