> Which *BSD and/or Linux distributions currently support SMP on SPARC?
> Any reason to pick one over another? I have Solaris but I'm not a big
> fan of it.
No BSD appears to currently support Sparc SMP; FreeBSD does have
an SMP kernel but it's Intel-only. With Linux, it's not really a
distribution issue per se. According to the SMP-HOWTO, the SparcStation
20 is known to work, but check the documentation for yourself. For
Sparcs of that vintage, there's UltraLinux, Debian, SuSE, Gentoo,
Aurora, and Splack, so you have a decent range of choices.
Good luck. I've found that a new OS can really extend the life
of older Sparcs - I'm running OpenBSD on an IPX as my gateway at home,
and it works pretty well (although it is still getting a bit long in
the tooth - waiting ~20 seconds for an SSH login is annoying).
BTW, please break your lines at 78 characters or so.