Keren Bergman, Michal Lipson and Alex Gaeta Win $4.8M DARPA Grant
Computing systems today, from embedded networks to high performance supercomputers, increasingly run the risk of being overwhelmed by their off-chip communications. That’s because even as technological advances have exponentially accelerated high performance computation on-chip, off-chip bottlenecks have emerged over electronic interconnects to other processors, memory, and accelerators. The resulting massive uptick in energy consumption is causing chips to hit their maximum power and temperature usage—the so-called “power wall”—that’s become a major obstacle to increased performance overall.
A team led by Keren Bergman, Charles Batchelor Professor of Electrical Engineering, has won a $4.8M, 3.5 year grant from DARPA to create a new class of optical interconnects integrated directly on-chip that are capable of “feeding” and “extracting” ultra-high communications bandwidths from the computer chips to anywhere in the system with extreme energy efficiencies. These photonic interconnects will enable a new generation of systems to scale performance without increasing energy costs. Bergman is working with Columbia Engineering Professors Michal Lipson and Alex Gaeta, together with collaborators from Cornell and JASR Systems, to develop on-chip integrated photonic devices for interconnects that consume 100 times less energy than today's communication systems while delivering 100 times more communication bandwidths between computing nodes.
SEP 18 2019 | BY HOLLY EVARTS | PHOTO CREDIT: BARBARA ALPER
Original article here.