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Modern Fortran by Walter Spector, Norman S. Clerman

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12.Parallel Processing

In the world of scientific and engineering computing, applications must often take advantage of all the processing power the system is capable of providing. With the advent of low-cost computers with multiple processing cores, writing programs that employ parallel processing has become common.

Modern computers operate in the digital domain, yet users wish to simulate or control physical processes, which are usually continuous, or analog, in nature. The conversion between the two domains is necessarily imprecise. The closer the digital process can model the real-world one, the better the result.

A numerical model must be fine-grained enough to accurately model the process, yet it must not be too fine, or resource requirements ...

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