6533b81ffe1ef96bd1277a10

RESEARCH PRODUCT

Analyzing the Energy Efficiency of the Memory Subsystem in Multicore Processors

Sandra CatalánEnrique Salvador Quintana OrtíRafael MayoJorge González Domínguez

subject

Memory coherenceMemory managementFlat memory modelShared memoryComputer scienceInterleaved memoryUniform memory accessDistributed memorySemiconductor memoryParallel computing

description

In this paper we analyze the energy overhead incurred when operating with data stored in different levels of the memory subsystem (cache levels and DDR chips) of current multicore architectures. Our approach builds upon servet, a portable framework for the memory characterization of multicore processors, extending this suite with a power-related test that, when applied to a platform equipped with a power measurement mechanism, provides information on the efficiency of memory energy usage. As additional contributions, i) we provide a complete experimental study of the impact that the CPU performance states (also known as P-states) exert on the memory energy efficiency of a collection of recent server-oriented and low-power cores, and ii) we show how this framework carries over to cover also the scalability analysis of the memory energy performance on multicore processors.

yearjournalcountryeditionlanguage
2014-08-012014 IEEE International Symposium on Parallel and Distributed Processing with Applications
https://doi.org/10.1109/ispa.2014.11