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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
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The Owner Computes rule implies that specifying location of variables specifies (optimally or not) parallel execution!
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The new HPF-2 ON HOME directive is exception to this rule as specifies where a particular statement is to be executed
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(RE)DISTRIBUTE tells you where data is to be placed
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(RE)ALIGN tells you how different data structures are to be placed relative to each other
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