Abstract :
Scan the latest list of the 10 most powerful supercomputers and the list of the top 10 most energy efficient and you´ll see that only one name appears on both. The Piz Daint supercomputer is both the sixth most powerful machine in the world and the fourth most energy efficient. It´s also one of only two supercomputers in the top 10 of the efficiency ranking (the Green500) that´s capable of maintaining petaflops performance- a million billion floating-point operations per second. How it managed to make its mark in both categories could point the way to both more powerful and more efficient future machines.
