Application-specific memory protection policies for energy-efficient reliable design


Yang, Sheng, Shafik, Rishad Ahmed, Khursheed, Saqib, Flynn, David, Merrett, Geoff V. and Al-Hashimi, Bashir (2015) Application-specific memory protection policies for energy-efficient reliable design At IEEE International ESWEEK Symposium on Rapid System Prototyping, Netherlands. 08 - 09 Oct 2015. 7 pp.

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Description/Abstract

In this paper, we show that the vulnerability of memory components due to data retention in the presence of soft errors exhibit orders of magnitude variations with applications through extensive analysis of MiBench benchmarks. Underpinning such analysis, we propose a novel application-specific design flow for joint energy efficiency and reliability optimization. The energy efficiency is achieved through voltage/frequency scaling (VFS), while reliability is achieved through suitably choosing the appropriate protection policies (L1-Cache resizing and selective ECC) for hierarchical memory components. Fundamental to such joint optimization is a design analysis framework, which can analyze trade-off between memory protection policies considering the impact of VFS, and apply design optimization algorithm to provide with an energy-efficient design, while meeting a given reliability target. Using this framework the proposed design flow is validated through extensive number of application case studies based on ARMv7 processors modeled in GEM5. We show that the joint consideration of cache resizing and VFS can improve the L1-Cache reliability by up to 5x compared to VFS alone, while incurring <10% energy overhead. Additionally, using selective ECC for L2-Cache and DRAM, we show that energy consumption can be reduced by up to 40%

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: IEEE International ESWEEK Symposium on Rapid System Prototyping, Netherlands, 2015-10-08 - 2015-10-09
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Organisations: Electronic & Software Systems
ePrint ID: 380755
Date :
Date Event
October 2015e-pub ahead of print
Date Deposited: 17 Sep 2015 10:50
Last Modified: 17 Apr 2017 05:22
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/380755

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