Le mar. 5 avr. 2022 à 20:39, Martin Husemann <martin%duskware.de@localhost
> a écrit :
> On Tue, Apr 05, 2022 at 08:20:50PM +0200, Romain Dolbeau wrote:
> > I've successfully run it on a SS20 with a pair of SM100 (so 4 v7 CPUs)
> I didn't know that could work hardware wise.
It was never officially supported by Sun (the SM100 modules were only supported in the 600MP, including pair of them, which is a nice vintage configuration), but it does work in practice - both the host and the module are sufficiently MBus Level 2 compliant to work nicely together, and for some reason (probably "didn't remove it from the know-working code in the 600MP") the PROM supports the modules...
I tried NetBSD 9.0 on the config just to see if the software would actually work as well... and it did :-) (probably also for compatibility with the 600MP?). Performance-wise, it doesn't make any sense though, in particular as I luckily do own a pair of SM512 should I need a quad-CPU SS20. But those run way too hot for my peace of mind... (and work fine with NetBSD as well!).