Figure 1.

Parallel architectures. A) A block diagram of a shared memory system in which all processors access the same memory by means of a network. B) A block diagram of a message passing system in which memory is private to a processor. Processors share data by explicit communication over the network.

Hill et al. BMC Bioinformatics 2008 9:558   doi:10.1186/1471-2105-9-558
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