Experimental performance evaluation of the CM-5

R. Ponnusamy, R. Thakur, A. Choudhary, K. Velamakanni, Z. Bozkus, G. Fox

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


In this paper, we present an extensive experimental performance evaluation of the communication capabilities of the CM-5. We first study the communication characteristics such as start-up time, sustainable bandwidth for simple messages as a function of message size and number of processors, and the effect of multiple messages and link contention on the communication time. We study the effect of dense communication patterns such as complete exchange and propose four algorithms for scheduling a complete exchange operation. We also consider the scheduling of irregular communication patterns and present four algorithms for the same. We have tested these algorithms on many synthetic irregular communication patterns as well as those arising in real problems such as the conjugate gradient solver and the Euler solver. Finally, we study the performance and communication aspects of scientific applications such as two-dimensional FFT and Gaussian Elimination on the CM-5.

Original languageEnglish (US)
Pages (from-to)192-202
Number of pages11
JournalJournal of Parallel and Distributed Computing
Issue number3
StatePublished - Nov 1993

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computer Networks and Communications
  • Artificial Intelligence


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