A Hybrid Approach to Proving Memory Reference Monotonicity

Cosmin Eugen Oancea, Lawrence Rauchwerger

9 Citationer (Scopus)

Abstract

Array references indexed by non-linear expressions or subscript arrays represent a major obstacle to compiler analysis and to automatic parallelization. Most previous proposed solutions either enhance the static analysis repertoire to recognize more patterns, to infer array-value properties, and to refine the mathematical support, or apply expensive run time analysis of memory reference traces to disambiguate these accesses.
This paper presents an automated solution based on static construction of access summaries, in which the reference non-linearity problem can be solved for a large number of reference patterns by extracting arbitrarily-shaped predicates that can (in)validate the reference monotonicity property and thus (dis)prove loop independence.
Experiments on six benchmarks show that our general technique for dynamic validation of the monotonicity property can cover a large class of codes, incurs minimal run-time overhead and obtains good speedups.
OriginalsprogEngelsk
TitelLanguages and Compilers for Parallel Computing : 24th InternationalWorkshop, LCPC 2011 Fort Collins, CO, USA, September 8-10, 2011 Revised Selected Papers
RedaktørerSanjay Rajopadhye, Michelle Mills Strout
Antal sider15
ForlagSpringer
Publikationsdato2013
Sider61-75
ISBN (Trykt)978-3-642-36035-0
ISBN (Elektronisk)978-3-642-36036-7
DOI
StatusUdgivet - 2013
Udgivet eksterntJa
Begivenhed24th International Workshop, LCPC 2011 - Fort Collins, CO, USA
Varighed: 8 sep. 201110 sep. 2011
Konferencens nummer: 24

Workshop

Workshop24th International Workshop, LCPC 2011
Nummer24
Land/OmrådeUSA
ByFort Collins, CO
Periode08/09/201110/09/2011

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