[parisc-linux] different PA2.0 CPUs in the same box?

Grant Grundler grundler@cup.hp.com
Mon, 18 Oct 1999 22:31:15 -0700


Alex deVries wrote:
> 
> Can you mix and match different PA2.0 CPUs in a multiprocessor box?
> An 8000 and an 8200?  

And HP hasn't mix/matched processor clock frequency's in one box either.
870 (4-way/PA1.0/CIO) I think had something funny about the clocks which
I think was repeated in the T-class and possible planned in newer
architectures. Can anyone shed more light on this?

Minimizing clock drift of the various processors in an SMP box is
a difficult problem. Keeping accurate time is important but
synchronization of processors too often can really hurt performance.

grant

Grant Grundler
Communications Infrastructure Computer Operations
+1.408.447.7253