PPT Slide

program wave_spmd

C Learn number of tasks and taskid

call initialize task

call get task identification and information

C Identify left and right neighbors

C Get program parameters

read tpoints, nsteps

C Divide data amongst processes

read values

C Update values for each point along string

do t = 1, nsteps

C Send to left, receive from right

call send left endpoint to left neighbor

call receive left endpoint from right neighbor

C Send to right, receive from left

call send right endpoint to right neighbor

call receive right endpoint from left neighbor

Pseudo Code

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