SGI altix3000 series is basically 280ns (random 8 byte reads from big buffer) shared memory until 4 sockets.
itanium needs 8 clock-cycles to fetch a double from L2 cache (floats are not stored in L1) and 110 clock-cycles from L3 IIRC, how is that with x86-64?
f) itanium2 total focussed upon floating point, yet that is about the least interesting thing for such hardware to do; there always have been cheaper floating point solutions than itanium2. Let's forget about the disaster called itanium-1. A wrong focus. Integer speed simply matters for such expensive cpu's. This is why IBM could sell power6.
same goes for x86-64, no? _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
