Basic HTML version of Foils prepared 10 Sept 1996

Foil 33 Parallel Computer Architecture Control Structure

From New CPS615Master Foils-- 26 August 96 Basic Simulation Track for Computational Science CPS615 -- Fall Semester 96. by Geoffrey C. Fox
1 SIMD -lockstep synchronization
  • Each processor executes same instruction stream
2 MIMD - Each Processor executes independent instruction streams
3 MIMD Synchronization can take several forms
  • Simplest: program controlled message passing
  • "Flags" (barriers,semaphores) in memory - typical shared memory construct as in locks seen in Java Threads
  • Special hardware - as in cache and its coherency (coordination between nodes)
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© on Tue Oct 7 1997