HighwayNoC: Approaching Ideal NoC Performance With Dual Data Rate Routers
Artikel i vetenskaplig tidskrift, 2020

This paper describes HighwayNoC,, a Network-on-chip (NoC) that approaches ideal network performance using a Dual Data Rate (DDR) datapath. Based on the observation that routers datapath is faster than control, a DDR NoC allows flits to be routed at DDR improving throughput to rates defined solely by the datapath, rather than by the control. DDR NoCs can use pipeline bypassing to reduce packet latency at low traffic load. However, existing DDR routers offer bypassing only on in-network, non-turning hops to simplify the required logic. HighwayNoC, extends bypassing support of DDR routers to local ports, allowing flits to enter and exit the network faster. Moreover, it simplifies the DDR switch allocation and the interface of router ports reducing power and area costs. Post place and route results in 28 nm technology show that HighwayNoC, performs better than current state of the art NoCs. Compared to previous DDR NoCs, HighwayNoC, reduces average packet latency by 7.3-27% and power consumption by 1-10%, without affecting throughput. Compared to existing Single Data Rate NoCs, HighwayNoC, achieves 17-22% higher throughput, has similar or up to 13.8% lower packet latency, and mixed energy efficiency results.

Routing

Network on chip (NoC)

dual data rate.

Pipelines

Throughput

interconnection networks

router architecture

Switches

Traffic control

Resource management

Delays

Författare

Ahsen Ejaz

Chalmers, Data- och informationsteknik, Datorteknik, Computer Systems

Vasileios Papaefstathiou

Institute of Computer Science Crete

Ioannis Sourdis

Chalmers, Data- och informationsteknik, Datorteknik, Computer Systems

IEEE/ACM Transactions on Networking

1063-6692 (ISSN)

Vol. In Press

Ämneskategorier

Datorteknik

DOI

10.1109/TNET.2020.3034581

Mer information

Senast uppdaterat

2020-12-29