Across modern AMD/Intel CPU's is contention for atomics (inc/dec/swap etc) between say 2 SMT/HT threads on the same core known to have significantly better performance in general than between threads pinned to different cores?
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Across modern AMD/Intel CPU's is contention for atomics (inc/dec/swap etc) between say 2 SMT/HT threads on the same core known to have significantly better performance in general than between threads pinned to different cores?