High Quality Content by WIKIPEDIA articles! In computer science, Parallel Random Access Machine (PRAM) is a shared memory abstract machine. As its name indicates, the PRAM was intended as the parallel computing analogy to the random access machine (RAM). In the same way, that the RAM is used by sequential algorithm designers to model algorithmic performance (such as time complexity), the PRAM used by parallel algorithm designers to model parallel algorithmic performance (such as time complexity, where the number of processors assumed is typically also stated). Similar to the way in which the RAM model neglects practical issues, such as access time to cache memory versus main memory, the PRAM model neglects such issues as synchronization and communication, but provides any (problem size-dependent) number of processors. Algorithm cost, for instance, is estimated using two parameters O(time) and O(time x processor_number). Данное издание представляет собой компиляцию сведений,...

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