SCHEDULE: NOV 16-21, 2014

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All-to-All, Low Latency, and High-Throughput Optical Interconnect Demonstrator for Scalable Supercomputing

SESSION: Emerging Technologies Exhibits

EVENT TYPE: HPC Impact Showcase & Emerging Technologies

TIME: 7:00PM - 9:00PM

ROOM:Show Floor - 233 Exhibits

ABSTRACT:

This project demonstrates five key elements for future high-performance computing: (1) high-throughput, (2) low-latency, (3) energy-efficiency, (4) scalability, and (5) high-radix, all-to-all connectivity. We exploit optical parallelism and wavelength routing capability of arrayed wavelength grating routers (AWGRs) and collapse the entire network topology to a flattened and single-hop interconnection topology. The AWGR is a passive wavelength routing component that enables fully connected all-to-all parallel interconnection without contention across huge (>20 THz) optical bandwidths. This project demonstrates wavelength routed optical interconnects that (1) scale to ~ million compute nodes and Exabyte/s bisection-bandwidth, (2) support all-to-all connectivity without contention or arbitration with the radix count 512 and beyond, (3) exploit ~ pJ/bit communication energy efficiency, (4) achieves 100% throughput at the rack and 97% throughput in a cluster at 100% data injection rate on every transmitter port in the system, and (5) demonstrates a chip-scale AWGR switch implementation using silicon photonics.

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