부산대학교 도서관

Network-on-Chips (NoCs) have demonstrated be a favorable alternative to conventional bus-based communication architectures for interconnecting programming elements (PEs). However, NoCs consist of numerous shared resources such as routers and links leading to traffic contention and hence packet transmission delays. Existing works rely on various mechanisms, e.g., leaky buckets, to regulate the network bandwidth distribution and reduce contention. However, such bandwidth regulation mechanisms rarely use runtime information to decide which PEs can inject packets in the network. In this paper, we propose a traffic injection regulation protocol where PEs can dynamically request other PEs to relinquish some network bandwidth. The proposed solution prevents starvation and excessive communication delays due to PEs being unable to inject their flits on the network. Moreover, since the proposed solution uses runtime information, it does not waste communication bandwidth. Experimental results show that our solution leads to a more equitable distribution of network bandwidth among PEs compared to leaky bucket-based mechanisms.