并行处理机系统中采用多端口 SRAM 的新型互联网络

New interconnection network mechanism using multi port SRAM for message passing in parallel processing systems

提出一种与传统方法不同的新型互联机制和结构，它采用多端口快速静态存储器（ＭＰＦＳＲＡＭ）为中心的互联机制，称为ＭＣＩＭ。以ＭＣＩＭ为基础构成的并行系统，其信息传输频宽可超过１０Ｇｂｉｔ／ｓ，而其传输信息的延迟在１０ｎｓ以下。其性能远优于ＳＭＰ与ＭＰＰ系统中传统的以逻辑电路为基础的互联网络。比起网络并行计算系统ＮＰＣ来，则可克服网络适配卡总线数据传递速率的瓶颈，大幅度减少网络协议开销，优点更为显著。讨论了采用ＭＣＩＭ的并行系统结构，ＭＣＩＭ中信息传送的机理、通信路径的仲裁与选择；探讨了ＭＣＩＭ并行系统的扩展性和物理实现。开发了ＭＣＩＭ并行系统仿真工具，给出了仿真的实验结果。

A new kind of interconnection mechanism and structure, which wholely differs from the traditional IN mecthod, is proposed. It employs the Multiple Port Fast Static Memory (MPFSRAM) centric interconnection mechanism, titled as MCIM. The parallel system based on the MCIM can have the data transmission bandwidth surpassing 10 Gbit/s. And the delay for data transmission could be below 10 ns, it provides the better performance than that of SMP and MPP built with the interconnection network based on the traditional logic circuits. In comparison with the Networked Parallel Computing (NPC), it has more explicit advantages: it can overcome the bottleneck of data transfer rate limited by the bus of networked adapters, it can greatly reduce the overhead of network protocol. This paper decribes the parallel system structure based on MCIM, the mechanism of data transfer in MCIM, the arbitration and selection of communication path. The scalability and physical implementation of the MCIM based parallel systems are explored. The emulation tool for MCIM based parallel systems has been developed, and the experimental results are given.