基于同步共享内存的海—气模式耦合的实现

为解决海—气模式耦合过程中不同模式分量间数据的高效传递问题,选取Linux系统下通信效率最高的共享内存通信机制,为交换数据开辟共享内存区,并通过信号量协调数据交换时的同步,编写了基于同步共享内存的耦合模块。将该模块应用于中尺度大气模式MM5和第3代海浪模式WAVEWATCHIII的耦合中,对多个热带气旋的数值模拟试验表明:采用同步共享内存耦合模块建立的大气—海浪耦合模式运行稳定、高效,计算机时较传统耦合方法减少6%以上;耦合模块独立于数值模式,可直接移植到其他模式分量的耦合中,且适用于SMS和VSMS并行系统的计算。

Implementation of air-sea model coupling based on synchronized shared memory method

To solve exchange data efficiently between different model components during air-sea model coupling,the shared memory mechanism,the most efficient inter-process communication type in Linux system,was selected to create a shared memory area for the exchanged data,and the semaphores were used to synchronize the access to the shared data.Thus a coupling mode was designed based on the synchronized shared memory.The meso-scale atmospheric model MM5 and the third generation wave model WAVEWATCH III were successfu...