Alternatives to ROM. Magnetic vs. Electric

[Jasen]

You are not wrong, but the ways in which you are right might
surprise you. 386s & 486s aren't very good for multiprocessing due
to a lack of cache and cache-coherency (MOESI) hardware. So it's
tough for them to share RAM. But they can of course be clustered.

lack of in-built cache is good for sharing ram. see "hypercube".

later processors have MTRR which can be used to diable cache on
address ranges.

I've been using dualies a my primary machine for 8 years. They seem
smoother, perhaps because one of the CPUs is usually idle and can
handle interrupts or background tasks. But I have to do special
things (make -j 2) to get a speed increase on compute intensive
tasks like a Linux kernel compile,

make -j2 helps on uniprocessors (due to disk latency), try a higher number!

Bye.
Jasen

 

[Rev. 11D Meow!]

When The Aurora Rise In The Heavens!

Can newbies learn to cut down on followups?


It is better to have one seven foot jumper than any number of six foot
jumpers.
--Frederick Terman


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