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windowsnuma

Should I worry about NUMA in one CPU system?

Is there any implication for a Windows developer for NUMA supported CPU architecture if only one CPU is present?

Solution

  • Comment -> Answer

    As far as I know, there are no single-socket systems that are NUMA. The IBM Power7 has a slightly NUMA L3 cache, but access to main memory is still uniform.

    Many of the multi-socket motherboard systems are NUMA where each socket has its own bank of local and fast memory. You can choose to populate only one socket, but then it's no longer NUMA.

    So no, if there's only CPU, then you don't need to worry about NUMA.