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WPSA (Way-predicting set-associative) cache is a well-known approach to reduce the set-associative I-cache's energy consumption. However, an extra cycle is needed if a prediction miss occurs. This may actually degrade the performance. This paper proposes a new virtual-address-mapping mechanism to aim at only accessing one way in I-cache within one cycle by adding a virtual address matching table which...
Access with prediction has been an effective approach to reduce the power consumption of set-associative I-cache. However it decreases the performance meanwhile. This paper improved LAW (last accessed way) based I-cache design, which takes both the replacement and predicting access policy into account. By replacing and accessing along the last accessed way, the CMR (cache miss rate) and PMR (predict...
Simultaneous multi-threading processors can improve performance through permitting multiple independent threads to issue multiple instructions each cycle. However, all the existing simultaneous multi-threading resource allocation strategies allocate the resources according to the status of instructions from the threads and without considering the thread priorities that operating system endows. In...
Predicting access is known as an approach to reduce the set-associative I-cache's energy consumption. This paper proposes a LAW (Last Accessed Way) based low-energy I-cache, taking both the replacement and predicting access policy into account. By replacing and accessing instructions speculatively following the last accessed way, the PHR (predict-hit-rate) is significantly improved. Simulator results...
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