ArSMART: An Improved SMART NoC Design Supporting Arbitrary-Turn Transmission

SMART NoC, which transmits unconflicted flits to distant processing elements (PEs) in one cycle through the express bypass, is a high-performance NoC design proposed recently. However, if contention occurs, with low priority would not only be buffered but also could fully utilize bypass. Although there exist several routing algorithms that decrease contentions by rounding busy routers and links, they cannot directly applicable since it lacks support for arbitrary-turn (i.e., number direction of turns are free constraints) routing. Thus, this article, minimize further we propose an improved called ArSMART, transmission enabled. Specifically, ArSMART divides whole into multiple clusters where route computation conducted cluster controller data forwarding performed bufferless reconfigurable router. Since long-range needs bypass intermediate arbitration, enable feature, configure input output ports connection rather than applying hop-by-hop table-based arbitration. To explore higher communication capabilities, effective adaptive compatible proposed. The overhead, main concerns algorithms, hidden our carefully designed control mechanism. Compared state-of-the-art experimental results demonstrate average reduction 40.7% application schedule length 29.7% energy consumption.