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Performance Model (WYSIWYG)
To state how ZPL
performs operations, each operator’s work and communication needs are given …
producing a performance model
–Performance
is given in terms of the CTA
–Performance
is relative, e.g. x is more expensive in communication than y
•Rules…
A + B -- Element-size array operations
•No
communication
•Work
comparable to C
•Work
fully parallelizable, i.e. time = work/P