Complete computer as building block, including I/O
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Communication via explicit I/O operations
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Natural for web computing ....
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Programming model:
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Directly access only private address space (local memory)
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Off processor access via explicit messages (send/receive)
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High-level block diagram similar to distributed-memory SAS (Shared Address Space)
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But off pr integrated at IO level; needn't be into memory system
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Like networks of workstations (clusters), but tighter integration with specialized I/O
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Easier to build than scalable SAS
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Programming model more removed from basic hardware operations (?)
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But natural for some problems as exposes parallelism rather than writing a parallel algorithm in a sequential language and letting some bunch of ignorant threads uncover what you knew anyway .... (SAS model?)
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