Basic HTML version of Foils prepared 2 October 1995

Foil 31 Programming with Guard Rings - Sequential

From New CPS615 Foils-- D 23 September 95 CPS615 Basic Simulation Track for Computational Science -- Fall Semester 95. by Geoffrey C. Fox
1 In sequential case, one could dimension array PHI(F) to PHI(14,14) to hold updated points only. However then points on the edge would need special treatment so that one uses boundary values in update
2 Rather dimension PHI(16,16) to include internal and boundary points
  • Run loops over x(I) and y(J) from 2 to 15 to only cover internal points
  • Preload boundary values in PHI(1, . ), PHI( . , 16),PHI( . ,1),
  • PHI( . ,16)
  • This is easier and faster as no conditionals (IF statements) in inner loops
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© on Tue Oct 7 1997