Snip from New Scientist:
The first supercomputer capable of crunching through a thousand trillion mathematical operations every second has been announced by IBM.
This is roughly equivalent to the combined processing power of a 2.4-kilometre-high pile of laptop computers.
Blue Gene/P will be capable of a peak performance of 3000 trillion calculations, or floating point operations, per second (3 petaflops). But its sustained performance is expected to level out at around 1 petaflop.
Link to article, and this Wikipedia entry includes a good link roundup for more info from IBM sites.(Via Warren Ellis)
Reader comment: Erc says,
a thousand trillion — You know, some people call that a "quadrillion." If I've told you once, I've told you ten hundred times…