Scheduling regular and irregular communication patterns on the CM-5

Abstract

The authors study the communication characteristics of the CM-5 (Connection Machine 5) and the performance effects of scheduling regular and irregular communication patterns on the CM-5. They consider the scheduling of regular communication patterns such as complete exchange and broadcast. They have implemented four algorithms for complete exchange and studied their performances on a 2-D FFT (fast Fourier transform) algorithm. They have also implemented four algorithms for scheduling irregular communication patterns and studied their performance on the communication patterns of several synthetic as well as real problems such as the conjugate gradient solver and the Euler solver.<>