
An IBM-built computer named Blue Gene/L, deployed at Lawrence Livermore National Laboratory,
has doubled its performance to 280.6 trillion calculations per second (teraflops).
The system is used to study the US nuclear stockpile and perform other research.
International Business Machines Corp. built the top three systems on the list released
by the Top 500 project, an independent group of university computer scientists who
release supercomputer rankings every six months.


