11 Jun
2020
11 Jun
'20
5:45 a.m.
On Thu, 11 Jun 2020 at 11:58, Liam Proven via cctalk
<cctalk at classiccmp.org> wrote:
There was also a 3rd party multiprocessor board, the
Hydra from
Simtech, but the appearance of the DEC-designed StrongARM killed that
off -- one 200MHz StrongARM was performance competitive with half a
dozen ~25MHz ARM710 processors.
http://chrisacorns.computinghistory.org.uk/32bit_UpgradesH2Z/Simtec_Hydra.h…
The big issue with the Hydra was its lack of cache coherency between
processors, which made conventional SMP somewhat... challenging. You
could do very cool multiprocessor stuff with it, just not in a
conventional SMP capable OS (I remember talking to someone trying to
use it under NetBSD at the time :)
David