On Sun, 25 Mar 2018 23:29:07 +0200, Peter J. Holzer wrote: [...] >> >> By the way, multiple CPU machines are different from CPUs with >> >> multiple cores: >> >> >> >> http://smallbusiness.chron.com/multiple-cpu-vs-multicore-33195.html >> > >> > Yeah, it was always "multiple CPUs", not "multiple cores" when I was >> > growing up. > > Yes, but the difference is only an implementation detail.
Not really. With multiple CPUs, you have the option of running two distinct OSes in isolation, not merely virtual machines but actual distinct machines in the same box. And the CPUs don't necessarily need to be the same type, see for example the hybrid Apple Mac/Lisp Machine released in the late 1980s or early 90s. Of course, today, virtualisation is in many practical senses virtually as good (pun intended) as actual distinct machines with distinct CPUs, and the cost of adding multiple cores is typically cheaper than adding multiple CPUs, so there's little point unless you're working with serious supercomputer hardware where you need more cores than will fit on a single chip. -- Steve -- https://mail.python.org/mailman/listinfo/python-list
