基于MPI的BLACS无标志通信实现原理

The Principle of Implementation of ID-Less Communication in BLACS Based on MPI

BLACS是一个基于MPI或PVM用于分布存储并行线性代数计算的通信库.无标志通信是BLACS主要特点之一.无标志通信意味着在通信过程中,传送的消息不带消息标志.这对提高BLACS可编程性,改善并行程序质量,具有十分重要的意义.文中以基于MPI的BLACS中点到点通信、广播通信为例详细分析了无标志通信实现原理.

BLACS, which is based on MPI or PVM, is a communication library for linear algebra computing on distributed memory parallel computing systems. ID - less communication is one of features of the BLAGS. ID - less communication means that the passed messages don＇ t carry message lids in during communication. ID - less communication is important to add the programmability of the BLACS and improve quality of parallel applications. The point to point communication and broadcast in the BLACS based on MPI are taken as examples to analyze the principle of ID- less communication in this paper.