Re: 1024-way SMP?! (was Re: linux-kernel-digest V1 #2914)

Stephen C. Tweedie (
Wed, 2 Dec 1998 15:14:21 GMT


On Tue, 01 Dec 1998 14:39:18 -0500, Paul Barton-Davis <> said:

> Expecting to get real performance from 1024 cpus in an SMP config is
> not realistic. That why I said I'd do it the way KSR did - it will
> work like an SMP box, and it will work better as a NUMA box. Too bad
> it didn't work at all :)

SMP is an architecture. If you're doing something like this, it may be
SSI (single system image), so that it looks like SMP to a programmer,
but it's still not SMP. It is, in fact, clustering. Hence the original
objection that 1024-way SMP is _not_ the way to go!

And yes, 1024-way NUMA SSI clustering would be wonderful...


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