Oak Ridge National Lab is once again home to the world's most powerful supercomputer.
The Titan has replaced the XT5 Jaguar at the lab, which was the fastest computer in 2009 and 2010.
It's a powerful tool to help researchers understand the world and solve challenging problems.
ORNL Director Thom Mason says the computer shows the country's commitment to high-performance computing.
"It allows us to do simulations of the real world with greater accuracy, faster, and over a wide range of scientific and engineering disciplines," said Mason.
One example of uses for the computer is to create models of the weather during massive storms like Hurricane Sandy. Mason says Titan can also help develop models of the climate over time.