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Reliability-Aware Instruction Set Customization for ASIPs with Hardened Logic
Linköpings universitet, Institutionen för datavetenskap, Programvara och system. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för datavetenskap, Programvara och system. Linköpings universitet, Tekniska högskolan.
Institute of Computer Science & Engineering (ITEC), Karlsruhe Institute of Technology (KIT), Germany.
Linköpings universitet, Institutionen för datavetenskap, Programvara och system. Linköpings universitet, Tekniska högskolan.
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2012 (Engelska)Ingår i: International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA 2012), Seoul, Korea, August 19-22, 2012., 2012Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Application-specific instruction-set processors (ASIPs) allow the designer to extend the instruction set of the base processor with selected custom instructions to tailor-fit the application.In this paper, with the help of a motivational example, we first demonstrate that different custom instructions are vulnerable to faults with varying probabilities. This shows that by ignoring the vulnerability to faults, traditional methods of instruction set customization can provide no guarantees on the reliability of the system. Apart from such inherent disparity in error vulnerability across custom instructions, each custom instruction can have multiple implementation choices corresponding to varying hardened levels. Hardening reduces the vulnerability to errors but this comes at the overhead of area costs and reduced performance gain. In this paper, we propose a framework to select custom instructions and their respective hardening levels such that reliability is optimized while the performance gain is satisfied and area costs are met as well. Our framework is based on a novel analytical method to compute the overall system reliability based on the probability of failure of individual instructions. Wide range of experiments that were conducted illustrate how our tool navigates the design space to reveal interesting tradeoffs.

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2012.
Nationell ämneskategori
Data- och informationsvetenskap
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URN: urn:nbn:se:liu:diva-78639DOI: 10.1109/RTCSA.2012.28ISBN: 978-1-4673-3017-6 (tryckt)ISBN: 978-0-7695-4824-1 (tryckt)OAI: oai:DiVA.org:liu-78639DiVA, id: diva2:534204
Konferens
RTCSA12
Tillgänglig från: 2012-06-15 Skapad: 2012-06-15 Senast uppdaterad: 2018-01-12

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Bordoloi, Unmesh D.Tanasa, BogdanEles, PetruPeng, Zebo
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Programvara och systemTekniska högskolan
Data- och informationsvetenskap

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