DLL-conscious instruction fetch optimization for SMT processors

Mohamood, Fayez; Ghosh, Mrinmoy; Lee, Hsien-Hsin S.

doi:10.1016/j.sysarc.2008.04.014

Cited by 1 publication

(3 citation statements)

References 28 publications

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“…At this low level, the detection of cloned text can be more efficient and more secure. Two such mechanisms that have already been proposed are [12,16] and with certain modifications can be applied to ETC.…”

Section: How To Eliminate Etc and Itcmentioning

confidence: 99%

“…Duplicate instructions sequences can exists because of copy paste programming, macro expansion, function inlining and other compiler and programming optimizations. Mohamood et al [16] proposed a mechanism to detect DLL sharing between different threads that use the same DLLs. The mechanisms described are based on both VIVT and VIPT caches that are aware of DLL sharing using a bit in the ITLB table that is set with aid of the Operating System.…”

Section: How To Eliminate Etc and Itcmentioning

confidence: 99%

“…Another possible solution for the ITC problem is the hardware mechanisms proposed to detect and eliminate CacheContent-Duplication dynamically [12,16]. These mechanism may help eliminate both ETC and ITC.…”

Section: How To Eliminate Etc and Itcmentioning

confidence: 99%

See 2 more Smart Citations

Extrinsic and Intrinsic Text Cloning

Kleanthous

Sazeides

Dikaiakos

2011

Computer Architecture

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Text Cloning occurs when a processor is storing in one or more levels of its cache hierarchy the same text multiple times. There are several causes of Text Cloning and we classify them either as Extrinsic or Intrinsic.Extrinsic Text Cloning can happen due to user and software practices, or middleware policies, which result into making multiple copies of a binary and concurrently executing the multiple copies on the same processor.Intrinsic Text Cloning can happen when an instruction cache is Virtually Indexed/Virtually Tagged and the process identifier is included in the tag. A simultaneous multithreaded processor, that employs such cache, will map the text of concurrent processes of the same binary to different instruction cache space due to their distinct process identifier.Text cloning can be wasteful to performance, especially for simultaneous multithreaded processors, because concurrent processes compete for cache space to store the same instruction blocks. Experimental results on simultaneous multithreaded processors indicate that the performance overhead of this type of undesirable cloning is significant. Theses findings call for OS and/or architectural support to reduce or eliminate Text Cloning.

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Section: How To Eliminate Etc and Itcmentioning

confidence: 99%

Section: How To Eliminate Etc and Itcmentioning

confidence: 99%