On Jan 17, 2012, at 2:09 PM, Jeremy Chadwick wrote: > I do not have one of these boxes / am not familiar with them, but > HyperTransport is an AMD thing. The concept is that it's a bus that > interconnects different pieces of a system to the CPU (and thus the > memory bus).
While that was a nice picture, it's not related to the bus architecture of a Sun 4500. :-) An X or E 4500 is a highly fault-tolerant parallel minicomputer with 8 slots-- one was I/O, and you could put up to 7 CPU boards with dual UltraSPARC processors-- you could hot-plug CPU boards and memory in the event of a failure and keep the rest of the system up. They cost a significant fraction of a million dollars circa y2k. A check of some old docs suggests: Hypertransport Sync Flood occurred on last boot: Uncorrectable ECC error caused the last reboot. Regards, -- -Chuck _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
