Operating System Considerations for Large Scale Mimd Machines
Operating System Considerations for Large Scale Mimd Machines
Jan Edler
The book Operating System Considerations for Large Scale Mimd Machines was written by author Jan Edler Here you can read free online of Operating System Considerations for Large Scale Mimd Machines book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Operating System Considerations for Large Scale Mimd Machines a good or bad book?
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In order to make precise the effect of simultaneous access to shared memory we define the serialization principle, which states that the effect of simultaneous actions by the PEs is as if the actions had occurred in some (unspecified) serial order. Thus, for example, a load simultaneous with two stores directed at the same memory cell will return either the original value or one of the two stored values, possibly different from the value which the cell finally comes to contain. Note that simult...aneous memory updates are in fact accomplished in one cycle; the serialization principle speaks only of the effect of simidtaneous actions and not of their implementation. ^To be more specific. Fortune and Wyllie [78] introduced the PRAM (Parallel Random Access Machine), a multiple processor analogue of Aho, Hopcroft, and Ullman's [74] RAM, in which concurrent reads of a single location are permitted but concurrent writes are not. Snir [82] classifies this machine as a CREW PRAM (Concurrent Read Exclusive Write).
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