Abstract

The most important motivation for using a parallel system is the reduction of the execution time of computation-intensive application programs. The execution time of a parallel program depends on many factors, including the architecture of the execution platform, the compiler and operating system used, the parallel programming environment and the parallel programming model on which the environment is based, as well as properties of the application program such as locality of memory references or dependencies between the computations to be performed. In principle, all these factors have to be taken into consideration when developing a parallel program. However, there may be complex interactions between these factors, and it is therefore difficult to consider them all.

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