非阻塞点到点通信对局部阻塞点到点通信的模拟

A Simulation for Locally-Blocking Point-to-Point Communication Using Non-blocking Point-to-Point Communication

全局阻塞点到点通信易导致死锁,而局部阻塞点到点通信可缓解或避免此问题,但有些消息传递系统不提供局部阻塞点到点通信,需要模拟实现之.文中给出基于MPI的BLACS中用非阻塞点到点通信模拟局部阻塞点到点通信的方法,并作了些改进.

Globally-blocking point-to-point communication is prone to cause applications deadlock, but locally-blocking point-to-point communication can relieve or avoid the problem. However, some message passing systems do not support locally-blocking point-to-point communication, and so must simulate the communication. A simulating way and improvement for locally-blocking point-to-point communication using non-blocking point-to-point communication in BLACS based on MPI are presented in this paper.