Reduction in Cache Memory Power Consumption based on Replacement Quantity

Today power consumption is considered to be one of the important issues.Therefore, its reduction plays a considerable role in developing systems. Previousstudies have shown that approximately 50% of total power consumption is used incache memories. There is a direct relationship between power consumption andreplacement quantity made in cache. The less the number of replacements is, theless the power consumption is. In this paper, a mechanism was proposed amechanism to reduce power consumption using full associative organization andlayered replacement algorithm. In this scheme, all cache blocks were divided intothree layers. Final layer used FIFO replacement algorithm and middle layer usedrandom replacement algorithm. Also first layer used LRU replacement algorithm.Simulation results were shown using tools written by VB language that in theproposed plan the number of replacement was less than 8-way associative usingLRU replacement algorithm.

کلیدواژه ها:

power consumption ، replacement algorithm ، replacement quantities