On 02/25/11 10:07, Jonathan Dursi wrote: > On 2011-02-25, at 9:56AM, Ellis H. Wilson III wrote: >> >> I guess I'm lost on why this would be really useful, especially from a >> beowulfery perspective. It's not like any sane Beowulfer would pay a >> premium for Macs just to have this interconnect when they could just get >> some old IB hardware. > > It's not an Apple thing, it's an Intel thing; presumably it'll be > rolled out on PC hardware soon enough too (and I think if this had > first been introduced on (say) Dell boxes we wouldn't be seeing the > knee-jerk skepticism from some corners that we are.) It looks like > it comes built into the chipsets, eg, you wouldn't need a separate > "thunderbolt" board.
I noticed the non-exclusivity after my post and although I admit I'd prefer to see this rolled out first by a company that doesn't pride itself on closed and overpriced hardware and software, my skepticism isn't primarily founded on the technology's origins. I still think (certainly for the average consumer) this type of product is largely useless, since at the end of the day you either need to have all that data cached in RAM (with this tech and 8 gigs of RAM you're looking at like 5-10 seconds of transfer, presuming the source can read data to you at that maximum rate) or on the HDD/SSD. Until manufacturers start concentrating on the massive I/O performance gap that has been growing since the late 70s any further advancements on these fronts is in my opinion, fruitless. > Whether it scales up remains to be seen, of course, but hooking up > a bunch of machines to something approximating a shared PCIe bus > with no additional hardware seems like it could be genuinely > interesting, if it works like that. If not, well hey, it's a fast adapter > bus, and faster data transfer is good, even if just to peripherals. Peripherals which probably can't operate at 1.2GB/s (provided you don't have a SAN in your home). ellis _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
