Fragmented software‐based self‐test technique for online intermittent fault detection in processors

Abstract Software‐based self‐test (SBST) method is one of the widely used test techniques in processors. SBST scheme provides high fault coverage but incurs long detection latencies in case of intermittent faults (IFs) in online testing mode, due to large size and longer execution time of the test c...

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Autores principales:	Vasudevan Matampu Suryasarman, Santosh Biswas, Aryabartta Sahu
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Computer engineering. Computer hardware TK7885-7895 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/8af2a713489c432a98696f783bc7865c
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spelling	oai:doaj.org-article:8af2a713489c432a98696f783bc7865c2021-11-17T13:28:44ZFragmented software‐based self‐test technique for online intermittent fault detection in processors1751-861X1751-860110.1049/cdt2.12003https://doaj.org/article/8af2a713489c432a98696f783bc7865c2021-01-01T00:00:00Zhttps://doi.org/10.1049/cdt2.12003https://doaj.org/toc/1751-8601https://doaj.org/toc/1751-861XAbstract Software‐based self‐test (SBST) method is one of the widely used test techniques in processors. SBST scheme provides high fault coverage but incurs long detection latencies in case of intermittent faults (IFs) in online testing mode, due to large size and longer execution time of the test codes. A study of fragmented SBST testing approaches is conducted to select the most efficient fragmented testing strategy. For the selected fragmented SBST method, a reliable set of SBST code fragments with minimal fault detection latency is determined. However, it incurs inconsiderable overall fault coverage drop, compared to the coverage of the complete SBST test code. From experimental results on MIPS Processor, a set of 20 fragments of test tasks with 80% individual fault coverage was observed to have the highest reliability of all sets of fragments. A larger test task (i.e. complete SBST test code) with 96.3% coverage and a test period of 8 ms was replaced by these 20 fragments, which provided an overall coverage of 96% with an individual test period of 0.4 ms, to detect the same set of IFs.Vasudevan Matampu SuryasarmanSantosh BiswasAryabartta SahuWileyarticleComputer engineering. Computer hardwareTK7885-7895Electronic computers. Computer scienceQA75.5-76.95ENIET Computers & Digital Techniques, Vol 15, Iss 1, Pp 56-76 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Computer engineering. Computer hardware TK7885-7895 Electronic computers. Computer science QA75.5-76.95
spellingShingle	Computer engineering. Computer hardware TK7885-7895 Electronic computers. Computer science QA75.5-76.95 Vasudevan Matampu Suryasarman Santosh Biswas Aryabartta Sahu Fragmented software‐based self‐test technique for online intermittent fault detection in processors
description	Abstract Software‐based self‐test (SBST) method is one of the widely used test techniques in processors. SBST scheme provides high fault coverage but incurs long detection latencies in case of intermittent faults (IFs) in online testing mode, due to large size and longer execution time of the test codes. A study of fragmented SBST testing approaches is conducted to select the most efficient fragmented testing strategy. For the selected fragmented SBST method, a reliable set of SBST code fragments with minimal fault detection latency is determined. However, it incurs inconsiderable overall fault coverage drop, compared to the coverage of the complete SBST test code. From experimental results on MIPS Processor, a set of 20 fragments of test tasks with 80% individual fault coverage was observed to have the highest reliability of all sets of fragments. A larger test task (i.e. complete SBST test code) with 96.3% coverage and a test period of 8 ms was replaced by these 20 fragments, which provided an overall coverage of 96% with an individual test period of 0.4 ms, to detect the same set of IFs.
format	article
author	Vasudevan Matampu Suryasarman Santosh Biswas Aryabartta Sahu
author_facet	Vasudevan Matampu Suryasarman Santosh Biswas Aryabartta Sahu
author_sort	Vasudevan Matampu Suryasarman
title	Fragmented software‐based self‐test technique for online intermittent fault detection in processors
title_short	Fragmented software‐based self‐test technique for online intermittent fault detection in processors
title_full	Fragmented software‐based self‐test technique for online intermittent fault detection in processors
title_fullStr	Fragmented software‐based self‐test technique for online intermittent fault detection in processors
title_full_unstemmed	Fragmented software‐based self‐test technique for online intermittent fault detection in processors
title_sort	fragmented software‐based self‐test technique for online intermittent fault detection in processors
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/8af2a713489c432a98696f783bc7865c
work_keys_str_mv	AT vasudevanmatampusuryasarman fragmentedsoftwarebasedselftesttechniqueforonlineintermittentfaultdetectioninprocessors AT santoshbiswas fragmentedsoftwarebasedselftesttechniqueforonlineintermittentfaultdetectioninprocessors AT aryabarttasahu fragmentedsoftwarebasedselftesttechniqueforonlineintermittentfaultdetectioninprocessors
_version_	1718425557979365376

Fragmented software‐based self‐test technique for online intermittent fault detection in processors

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