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
1 For Jacobi with fourth order differencing, we have
2 Calculation 9 n tfloat
3 Communication 8 ?n tcomm
4 Communication Overhead fcomm = 0.89 tcomm/(?n tfloat)
5 A little bit smaller as communication and computation both doubled
6 Update Stencil
7 Communicated Updated Processor Boundaries
in Table To:

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