NDLI: Do inputs matter? using data-dependence profiling to evaluate thread level speculation in BG/Q

Content Provider	IEEE Xplore Digital Library
Author	Bhattacharyya, A.
Copyright Year	2013
Description	Author affiliation: Dept. of Comput. Sci., Univ. of Alberta, Edmonton, AB, Canada (Bhattacharyya, A.)
Abstract	Figure 1 shows the performance of three parallel versions (auto-SIMDized, auto-SIMDized+auto-OpenMP by bgxlc r and auto-SIMDized+auto-OpenMP+speculatively parallelized by an automatic speculative parallelization framework developed) of the SPEC2006 and PolyBench/C benchmarks. The speculative loops in lbm have 98% coverage that accounts for the speedup while in bzip2(35%) and dynprog (26%), the poor coverage of speculative loops introduces overhead. h264ref has the highest number of loops speculatively parallelized (47) but most of them have function calls that introduce dependences, thus causing slowdown (only 12% of speculative threads successfully committed). Filtering speculative execution of loops with non-side-effect-free function calls tackles the mispeculation overhead. cholesky and dynprog experience L1 cache misses due to LR mode(12% and 10% respectively) while jacobi and seidel experience huge dynamic path length increase (112% and 123% respectively over sequential).
Starting Page	401
Ending Page	401
File Size	47184
Page Count	1
File Format	PDF
ISBN	9781479910182
ISSN	1089795X
e-ISBN	9781479910212
DOI	10.1109/PACT.2013.6618836
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-07
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Benchmark testing Runtime Educational institutions Electronic mail Hardware Software
Content Type	Text
Resource Type	Article
Subject	Theoretical Computer Science Hardware and Architecture Software

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Do inputs matter?: using data-dependence profiling to evaluate thread level speculation in BG/Q

Do inputs matter?: using data-dependence profiling to evaluate thread level speculation in BG/Q

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