Constellation at HPCwire
HPCwire about Constellation:
Essentially Sun is trying to do what many thought was impractical -- scale a cluster into a petaflop machine. The first Sun Constellation deployment will be at the Texas Advanced Computing Center by the end of this year. At around 500 peak teraflops, that machine will vie for the number one spot on the Top500 list.
When you rethink one or two things at clustering systems, impractical becomes realistic.