Basic HTML version of Foils prepared February 13 00

Foil 24 Communication to Calculation Ratio as a function of template II

From Master Set for Parallel Programming for Laplace's Equation CPS615 Spring Semester 00 -- February 00. by Geoffrey C. Fox
For Jacobi with fourth order differencing, we have
Calculation 9 n tfloat
Communication 8 ?n tcomm
Communication Overhead fcomm = 0.89 tcomm/(?n tfloat)
A little bit smaller as communication and computation both doubled
Update Stencil
Communicated Updated Processor Boundaries

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