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Babak Aghaei
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Medicine & Pharmacology

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Performance Metrics Evaluation of Cache Coherence Protocols in Multiprocessors Environment Babak Aghaei
Journal of Global Pharma Technology Volume 08 Issue 03
Publisher : Journal of Global Pharma Technology

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Abstract

The shared memory multiprocessors suffer with significant problem of accessing shared resources in a shared memory it will result in longer latencies. Consequently, the performance of the system will get affected. With the object of solving the problem of increased access latency due to large number of processors with shared memory, Cache is being used. Every processor has its own private cache, now they can update or access the data comfortably but again it leads to another serious issue i.e. cache coherency. The magnitude of the potential performance difference between the various cache coherency approaches indicates that the choice of coherence solution is very important in the design of an efficient shared-bus multiprocessor, since it may limit the number of processors in the system. In this paper we evaluate a typical multiprocessor system in terms of power and latency with different cache coherence protocols where GEM5 simulator is used. The traffic is generated with five injection rates (0.1, 0.2, 0.3, 0.4 and 0.5). Power and latency analyzing figures are made up and appeared in experimental result. The result shows MOESI_CMP_token has maximum latency and power consumption.Keywords: Multiprocessor, Cache coherency Protocols, Power, Latency.  
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