Basic HTML version of Foils prepared 19 September 98

Foil 68 Why is this interesting?

From MPI Message Passing Interface Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken
In Jacobi like algoritms, each processor stores its own nxblock by nyblock array of variables as well as guard rings containing the rows and columns from neighbours. One loads these guard rings at start of computation iteration and only updates points internal to array
Guard Rings

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