MPP　Fortran程序中串行循环的优化

Optimizing Sequential Loops in MPP Fortran Programs

在大规模并行处理系统中，通讯开销是影响程序性能的一个重要因素。本文提出了一种ＭＰＰＦｏｒｔｒａｎ程序中串行循环的优化技术：在串行循环中加入同步控制、将串行循环转换成共享循环。该技术能减少通讯开销、提高程序的性能。

Communication overhead is an important factor which affects program performance in massively parallel processing systems. This paper introduces an optimizing technique for sequential loops in MPP Fortran programs. This technique,through application of synchronization control to sequential loops and changing sequential loops into shared ones, will reduce communication overhead and improve program performance.