Cache Energy Management through Dynamic Reconfiguration Approach in Opto-Electrical NoC

Multi/Many-core architectures will be the popular platform for future system design. Recent investigations show that the hybrid optical-electrical interconnection network can be an appropriate alternative to the traditional electrical NoC. Undoubtedly, memory wall is one of the most important challenges of multi/many-core systems which can somehow be alleviated thanks to hierarchical memory structure. Cache subsystem plays an essential role in increasing the efficiency of the memory structure. In this paper, after exploring the effect of cache subsystem's parameters in a many-core platform with opto-electrical interconnect, we propose a mechanism to increase the cache energy efficiency. The simulation results of the proposed approach show that after applying our method, the energy efficiency parameter improves by 17% and 23% in SPLASH2 and PARSEC benchmarks, respectively.