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Continuing demands for higher performance
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Physical limits on single processor performance
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Increasing number of transistors in a single chip or on a single board implies parallel architectures
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High costs of internal concurrency
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Result is rise of multiprocessor architectures
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And number of processors will continue to increase
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Increasing importance of DISTRIBUTED computing through the Web and Internet
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or Intranets which is the Internet internal to organizations
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Distributed computing is a much larger field
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