Effect of hot spot on the performance of multistage interconnection networks
Mohammed Atiquzzaman, M.S. Akhtar · 2003
Hot spots in multistage interconnection networks (MSINs) results in performance degradation of the network. The authors develop an analytical model for the performance evaluation of unbuffered MSINs under a single hot spot, followed by a performance comparison with buffered MSINs. For uniform traffic, a buffered network performs better than an unbuffered network. For a nonuniform traffic pattern causing congestion (for example, tree saturation) in the network, an unbuffered network outperforms a buffered network. This leads the authors to suggest a hybrid network which will be capable of switching from the buffered mode to the unbuffered mode in the presence of network congestion.>