Presentation 2005/7/29
Technique to Mitigate Soft Errors in Caches with CAM-based Tags
Luong D. HUNG, Masahiro GOSHIMA, Shuichi SAKAI,
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Abstract(in English) Content Addressable Memories (CAM) are widely used for the tag portions in highly associative caches. Since data are not explicitly read out of tag array in CAM search, the detection of false misses caused by soft errors for such caches, is difficult. This paper presents a novel technique to detect the false miss in highly associative cache with CAM-based tag. The technique involves subdividing the tags and providing backup checking for cases the tags are partially matched. An original tag encoding scheme is also proposed to reduce the frequency of back-up checking. Modifications to support the technique do not increase the cache access latency. The performance degradation incurred by additional cycles for false miss checking is very low.
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Keyword(in English) Soft Error / Content Addressable Memory / Cache
Paper # DC2005-18
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Committee DC
Conference Date 2005/7/29(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Technique to Mitigate Soft Errors in Caches with CAM-based Tags
Sub Title (in English)
Keyword(1) Soft Error
Keyword(2) Content Addressable Memory
Keyword(3) Cache
1st Author's Name Luong D. HUNG
1st Author's Affiliation Department of Information and Communication Engineering, the University of Tokyo()
2nd Author's Name Masahiro GOSHIMA
2nd Author's Affiliation Department of Information and Communication Engineering, the University of Tokyo
3rd Author's Name Shuichi SAKAI
3rd Author's Affiliation Department of Information and Communication Engineering, the University of Tokyo
Date 2005/7/29
Paper # DC2005-18
Volume (vol) vol.105
Number (no) 227
Page pp.pp.-
#Pages 6
Date of Issue