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Experts in Java are familiar with this as it is built in Java Language through thread primitives
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We take "ordinary" languages such as Fortran, C++, Java and add constructs to help compilers divide processing (automatically) into separate threads
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indicate which DO/for loop instances can be executed in parallel and where there are critical sections with global variables etc.
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openMP is a recent set of compiler directives supporting this model
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This model tends to be inefficient on distributed memory machines as optimizations (data layout, communication blocking etc.) not natural
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