GreenLight, a project run by the University of California, San Diego aims to measure the energy efficiency of new technologies such as 10 Gigabit Ethernet (10 GigE) and their impact on cluster capacity and efficiency – and reduction of energy costs. "The Quadrics TG201 24-port 10GiGE switch is a full-bisection bandwidth switch that enables us to richly connect the Greenlight Instrument into campus research networks," said Philip Papadopoulos, a San Diego Supercomputer Center scientist and co-PI on the GreenLight project. "We are driving DWDM optics directly from the switch to support as much as 80Gbit/sec on a single fiber pair."