Efficient Virtual Channel Organization and Congestion Avoidance in Multicore NoC Systems
Masoud Oveis-Gharan, Gul N. Khan · 2014
Dynamically Allocated Multi Queues (DAMQ) is an effective mechanism to achieve Virtual Channel (VC) based flow control with maximum buffer utilization in multi-core Network-on-Chip (NoC) systems. We present a new methodology to remedy some of the drawbacks of DAMQ technique. The architectural design of a DAMQ router input-port that uses minimal hardware is introduced. Our input-port design saves 70% of combinational-logic and 14.7% register hardware as compared to conventional Link-List input-port. We also present an efficient mechanism to remove traffic congestion in on-chip communication for NoC systems. It improves latency and throughput by 30% and 23% respectively as compared to conventional dynamic Virtual Channel design.