Titan (image) DOE/Oak Ridge National Laboratory Caption Oak Ridge National Laboratory is home to Titan, the world's most powerful supercomputer for open science with a theoretical peak performance exceeding 20 petaflops (quadrillion calculations per second). That kind of computational capability--almost unimaginable--is on par with each of the world's 7 billion people being able to carry out 3 million calculations per second. Credit ORNL Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.