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<p>easy to program since all processors share a single view of data and the communication between processors can be as fast as memory accesses to the same location. The issue with shared memory systems is that many CPUs need fast access to memory and will likely <a href="page.php?w=cache_memory">cache memory</a>, which has two complications:<br/>
* access time degradation: when several processors try to access the same memory location it causes <a href="page.php?w=Resource_contention">contention</a>. Trying to access nearby memory locations may</p><p>
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