Basic HTML version of Foils prepared 13 February 2000

Foil 20 Communication Must be Reduced

From Methodology of Computational Science CPS615 Computational Science -- Spring Semester 2000. by Geoffrey C. Fox
1 4 by 4 regions in each processor
  • 16 Green (Compute) and 16 Red (Communicate) Points
2 8 by 8 regions in each processor
  • 64 Green and "just" 32 Red Points
3 Communication is an edge effect
4 Give each processor plenty of memory and increase region in each machine
5 Large Problems Parallelize Best
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