基于数据流向的片上网络动态缓存分配机制

Dynamic buffer allocation based on date flow direction for NoC

为了有效利用缓存资源,提出一种动态分配片上网络路由器端口缓存的方法,根据传输方向将输入端口接收到的数据分成不同的组,每个组对应一个输出端口,并将数据以组的形式进行存储,控制部件根据各个组数据规模为其动态分配缓存资源。与基于虚通道的动态缓存分配方式相比,该方法降低了控制和仲裁的复杂度。仿真结果表明,获得同等性能的条件下,该方法可以有效降低缓存的需求。

Aiming to utilize buffer more effectively,this paper proposed a novel scheme to allot NoC buffer dynamically.Accor-ding to the transmission direction,it divided the date received by input ports into different groups,and each group corresponded to the only output port.Moreover,stored the data sent to different output ports in the form of group,and the control logic dynamically allocated buffer resources in line with the data size in various groups.Comparing with the buffer allocation based on virtual channel,this method dropped the complexity of the control and arbitration.The simulation results show that this method can effectively reduce demands of buffer resources when gaining equal performance.