Andreades, P; Zervas, G; (2019) Parallel Distributed Schedulers for Scalable Photonic Integrated Packet Switching. In: Proceedings of IEEE Photonics in Switching and Computing 2018. IEEE: Limassol, Cyprus. (In press).

Preview

Text Parallel Distributed Schedulers for Scalable Photonic Integrated Packet Switching_psc18.pdf - Accepted Version Download (591kB) | Preview

Abstract

As data centre traffic dynamics are changing, optical networking is becoming increasingly important for lowlatency, high bandwidth intra-data centre communication. Nanosecond-reconfigurable, scalable photonic switch fabrics and advances in photonic integration are key enablers for optical packet switching. However, the control plane and in particular the switch scheduler is believed to be a critical factor on packet latency and scalability. To that end, we report a low-latency scheduler for Clos-network switch fabrics based on a fixed path assignment scheme and parallel and distributed path arbitration. Cycle-accurate network emulation results show nanosecond average latency at input port loads up to 60% of capacity for a 256x256 switch size. In comparison to previous work, the scheduler can now control a switch 8 times the size at double the input port saturation load for the same average latency. Scaling the switch from 16 to 256 ports shows only a small drop in saturation load from 70% to 60%. Also fairness on a per flow basis is demonstrated.

Download activity - last month

Export as JSONXMLCSV

Download activity - last 12 months

Export as CSVJSONXML

Downloads by country - last 12 months

Export as XMLJSONCSV

Archive Staff Only

View Item