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一、通讯池的定义及用途分布式计算机要解决的关键问题之一是机间通讯,在具有主从结构、近距离、高速率的机间通讯系统中,如机载分布式计算机间要求通讯码速率为1MB/s条件下,采用一般串行通讯或并行通讯标准接口芯片不能满足高速率要求,采用DMA方式也需经过两次数据搬移,软硬件开销较大,速度也有一定限制。采用公共存储区——通讯池则是一个简单易行的方法,它可以实现计算机间1对1或1对N的高速通讯。
First, the definition and use of communication pool Distributed computer to solve one of the key issues is the inter-machine communication, with a master-slave structure, short-range, high-speed inter-machine communication system, such as distributed communication between computers The code rate of 1MB / s conditions, the use of general serial communication or parallel communication standard interface chip can not meet the high rate requirements, the use of DMA mode also need to go through two data movements, hardware and software overhead, the speed is also limited. The use of public storage - communication pool is a simple and easy way to achieve high-speed 1-to-1 or 1-to-N communication between computers.