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Cloud Computing (CC) - Arquitectura de Sistemas Computacionais

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Data Parallelism characteristics<br />

Program simplicity:<br />

- only one Thread of control (the others are implicit slaves)<br />

- sequence of data parallel steps, mixed w. sequential steps<br />

Data set is split in subsets or domains, each assigned to a PE<br />

- data distribution must be specified by the program<br />

- i<strong>de</strong>ally domains are in<strong>de</strong>pen<strong>de</strong>ntly processed<br />

but may require communication that is implicitly triggered<br />

when remotely placed variable are referenced: owner keeps the<br />

data<br />

and sends a copy to the requesting PE<br />

JCunha<br />

33

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