New 200-Petaflops System Debuts as America’s Top Supercomputer for Science OAK RIDGE, Tenn., June 8, 2018—The U.S. Department of Energy’s Oak Ridge National Laboratory today unveiled Summit as the world’s most powerful and smartest scientific supercomputer. With a peak performance of 200,000 trillion calculations per second—or 200 petaflops, Summit will be eight times more powerful than ORNL’s pre