航空电子技术
航空電子技術
항공전자기술
AVIONICS TECHNOLOGY
2014年
1期
30-34
,共5页
NIRGAM%片上网络%虚拟通道%2D Mesh
NIRGAM%片上網絡%虛擬通道%2D Mesh
NIRGAM%편상망락%허의통도%2D Mesh
NIRGAM%network on chip(NoC)%virtual channel%2D Mesh
采用虫孔交换和虚拟通道技术的片上网络系统（NoC）能极大地降低传输延时，防止微片拥塞，增大网络吞吐率，从体系结构上解决了总线通信技术的瓶颈。片上网络的虚拟通道由多个缓冲区组成，其数目直接影响芯片的面积，必须通过仿真得到面积和缓冲区数目的平衡。使用 NIRGAM 仿真器对不同缓冲区数目的2D Mesh片上网络进行了仿真，对其源代码中几个重要参数提出了修改建议，仿真结果表明，在本文配置的通信情况下缓冲区深度为4微片时NoC系统整体性能最好。
採用蟲孔交換和虛擬通道技術的片上網絡繫統（NoC）能極大地降低傳輸延時，防止微片擁塞，增大網絡吞吐率，從體繫結構上解決瞭總線通信技術的瓶頸。片上網絡的虛擬通道由多箇緩遲區組成，其數目直接影響芯片的麵積，必鬚通過倣真得到麵積和緩遲區數目的平衡。使用 NIRGAM 倣真器對不同緩遲區數目的2D Mesh片上網絡進行瞭倣真，對其源代碼中幾箇重要參數提齣瞭脩改建議，倣真結果錶明，在本文配置的通信情況下緩遲區深度為4微片時NoC繫統整體性能最好。
채용충공교환화허의통도기술적편상망락계통（NoC）능겁대지강저전수연시，방지미편옹새，증대망락탄토솔，종체계결구상해결료총선통신기술적병경。편상망락적허의통도유다개완충구조성，기수목직접영향심편적면적，필수통과방진득도면적화완충구수목적평형。사용 NIRGAM 방진기대불동완충구수목적2D Mesh편상망락진행료방진，대기원대마중궤개중요삼수제출료수개건의，방진결과표명，재본문배치적통신정황하완충구심도위4미편시NoC계통정체성능최호。
The Network-on-Chip (NoC) system based on wormhole switching mechanism and virtual channel techniques can decrease the transmission latency, avoid the flow congestion and increase the throughput of the network. It has solved the bottleneck of BUS communication from architecturally. The number of buffers of the virtual channel determines the die area. It is necessary to simulate and strike a balance between them. NIRGAM is adopted to simulate the 2D Mesh network under different number of buffers. Modification for several parameters in the source code is proposed. Simulation results show that with the configuration of communication in this paper, NoC has the best performance when the depth of buffers is 4 flits.
