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Data parallelism important in High Performance scientific computing.
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Java must use same ideas as HPF HPC++ but details of language and experience can suggest a different implementation
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High level HPF programming model attractive, but implementations problematic and base language is Fortran!
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HPspmd model: Distributed array syntax, plus high-level class library bindings for communication and arithmetic on arrays.
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Can be applied to Fortran C++ Java
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Explicitly MIMD control flow.
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Ease of HPF Arrays; power of MPI; HPJava uses best language ....
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