面向片上网络缓冲资源争用的路由器设计

针对片上网络典型路由器的缓冲资源利用率不高、大容量缓存设计受限等问题,在不增加缓存和虚通道的情况下,提出一种新的面向片上网络缓冲资源争用的路由器设计方案。在该路由器中,当某个输入端繁忙发生资源争用情况时,将阻塞数据包分配到其他拥有空闲缓存资源的输入端口,解决缓冲资源的争用问题,从而提高网络整体性能。SystemC仿真结果表明,相对于基本路由器,该路由器在热点模式和均衡模式下均具有较高的网络饱和率和吞吐量,尤其在热点模式下提高了约11.4%的饱和率。FPGA实现结果表明,该路由器的面积开销较小,能较好满足片上网络的应用需求。

Design of Router for Buffer Resource Contention in Network on Chip

Concerning the buffer resources of typical routers in Network on Chip（NoC） are not fully utilized and the design of the large buffer capacity is restricted. In this paper, a new design of router for buffer resource contention in NoC is proposed without increasing the buffer and virtual channel. When an input terminal is busy and occurs resource contention in the new router, blocking the packet is assigned to other input port of having idle buffer resources, thus contention problem of the buffering resource is solved and overall network performance is improved. The System C simulation results show that, compared with basic router, the proposed router has higher network saturation rate and throughput under non-uniform traffic pattern and hot spot pattern, the saturation rate is increased by 11.4% especially under the hot spot patterns. FPGA implement results show that the router area overhead is small, and it can better meet the application requirements of NoC.