HTML version of Scripted Foils prepared 18 Sept 1995

Foil 65 SIMD Architecture Issues

From Second set of lectures on CPS615 Parallel Computing Overview CPS615 Basic Simulation Track for Computational Science -- Fall Semester 95. by Geoffrey C. Fox *

1 Node 1bit, 4 bit, 16 bit, 32 bit?
2 Interconnect issues similar to MIMD
3 Critical point -- is SIMD more cost effective than MIMD on a significant number of problems
  • What types of problems run well on SIMD?
  • Take a problem - e.g. SOR for PDE solution - that runs well on SIMD - is the MP-2 more cost effective than CM-5, Paragon, SP-1?
  • Need to compare SIMD and MIMD machines at "same technology" stage
4 Current Consensus is opposite of 1990 -- namely now MIMD dominates.
  • SIMD AMT DAP and Maspar aimed at Market niches
  • Defense signal processing
  • Business index sorting

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