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Answer by Kmtdk for In what sense does each thread appears to the operating system as a separate CPU?

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The fact that a cpu have multiple physical cores, is one thing (cpu cores), but the fact that the cpu can have virtual cores, are usually called "threads" in the hardware context(but they are not the same as the programming term "threds"). The simple way to think about "threads" in a hardware context is the amount of cpu cores (notice however this is partially correct, and incorrect as well, but in order to understand the difference I would recommend looking at wikipedia, for example: https://en.wikipedia.org/wiki/Hyper-threading).


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