Scripted HTML version of Foils prepared 29 December 1996

Foil 14 Data Mapping in HPF

From CPS615-Introduction to Virtual Programming Lab -- Problem Architecture Continued and Start of Real HPF Delivered Lectures of CPS615 Basic Simulation Track for Computational Science -- 26 September 96. by Geoffrey C. Fox *
Secs 223.2
Data Mapping in HPF is all you need to do to get parallelism as long as you use the explicit array type syntax such as A=B+C
The Owner Computes rule implies that specifying location of variables specifies (optimally or not) parallel execution!
The new HPF-2 ON HOME directive is exception to this rule as specifies where a particular statement is to be executed
(RE)DISTRIBUTE tells you where data is to be placed
(RE)ALIGN tells you how different data structures are to be placed relative to each other

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