Data Centers

ATAC: A Manycore Processor With On-Chip Optical Network

Date Added: May 2009
Format: PDF

Ever since industry has turned to parallelism instead of frequency scaling to improve processor performance, multicore processors have continued to scale to larger and larger numbers of cores. Some believe that multicores will have 1000 cores or more by the middle of the next decade. However, their promise of increased performance will only be reached if their inherent scaling and programming challenges are overcome. Meanwhile, recent advances in nanophotonic device manufacturing are making chip-stack optics a reality - interconnect technology which can provide significantly more bandwidth at lower power than conventional electrical analogs. Perhaps more importantly, optical interconnect also has the potential to enable new, easy-to-use programming models enabled by an inexpensive broadcast mechanism.