[OT] multicore/cpu history

[Grant Edwards]

On 2018-03-25, Steven D'Aprano <steve+comp.lang.python at pearwood.info> wrote:

> 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.

Not on any of the multi-CPU motherboards I ever worked with.  The CPUs
shared SDRAM and used the same physical address space.  They both saw
the same PCI/ISA buses and all other peripherals. There was no way you
could run two different OSes without some sort of hypervisor -- there
was no practical difference between them and a modern multi-core CPU.

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Grant Edwards               grant.b.edwards        Yow! All of life is a blur
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