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AE CS4 is thinks I have 8 cores
I might be going mad, but I’ve just installed CS4 on my new (single) quad core mac pro 2.93. When I go to memory/multiprocessing preferences, it says I have 8 cores. Anyone have any idea why?
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2 Replies
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Most likely because of hyper-threading (virtual cores), featured in the processor architecture (Nehalem) used by the Xeon CPUs in recent Mac Pros.
In most cases, I’d recommend setting AE to use the four physical cores (by using the “Leave CPUs free” setting in Memory and multiprocessing prefs). If for no other reason, because feeding 8 rendering instances adequately requires a LOT of RAM (2 GB per process, as a starting point). Even if you had such an amount of RAM, I doubt launching rendering instances for virtual cores will lead to faster rendering speeds (but sounds like a nice experiment!)Adolfo Rozenfeld · Adobe
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Ah thankyou. For a moment there I thought Apple had shipped me a dual CPU machine by mistake! Dream on…
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