Basic HTML version of Foils prepared February 13 00

Foil 8 Communication Must be Reduced

From Master Set for Parallel Programming for Laplace's Equation CPS615 Spring Semester 00 -- February 00. by Geoffrey C. Fox
4 by 4 regions in each processor
  • 16 Green (Compute) and 16 Red (Communicate) Points
8 by 8 regions in each processor
  • 64 Green and "just" 32 Red Points
Communication is an edge effect
Give each processor plenty of memory and increase region in each machine
Large Problems Parallelize Best

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