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oai:uvadoc.uva.es:10324/291322025-02-20T10:20:22Zcom_10324_1165com_10324_931com_10324_894col_10324_1337

Aldea López, Sergio 727c3aed65447aeb 600 Llanos Ferraris, Diego Rafael 0eb6c72a1ecd19fb 500 0000-0001-6240-9109 González Escribano, Arturo 90b35e33f5bb40b4 500 0000-0002-3037-3567 2018-03-17T16:24:32Z 2018-03-17T16:24:32Z 2016 Proceedings of the 16th International Conference on Computational and Mathematical Methods in Science and Engineering, CMMSE 2016 4-8 July, 2016, Rota, Cádiz 978-84-608-6082-2 http://uvadoc.uva.es/handle/10324/29132 Producción Científica Transactional Memory (TM) is a technique that aims to mitigate the performance losses that are inherent to the serialization of accesses in critical sections. Some studies have shown that the use of TM may lead to performance improvements, despite the existence of management overheads. However, the relative performance of TM, with respect to classical critical sections management depends greatly on the actual percentage of times that the same data is handled simultaneously by two transactions. In this paper, we compare the relative performance of the critical sections provided by OpenMP with respect to two Software Transactional Memory (STM) implementations. These three methods are used to manage concurrent data accesses in ATLaS, a software-based, Thread-Level Speculation (TLS) system. The complexity of this application makes it extremely di cult to predict whether two transactions may conflict or not, and how many times the transactions will be executed. Our experimental results show that the STM solutions only deliver a performance comparable to OpenMP when there are almost no conflicts. In any other case, their performance losses make OpenMP the best alternative to manage critical sections. MICINN (Spain) and ERDF program of the European Union: HomProg-HetSys project (TIN2014-58876-P), CAPAP-H5 network (TIN2014-53522-REDT), and COST Program Action IC1305: Network for Sustainable Ultrascale Computing (NESUS). application/pdf eng Universidad de Salamanca info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Sus autores Attribution 4.0 International Critical Sections and Software Transactional Memory Comparison in the Context of a TLS Runtime Library 16th International Conference on Computational and Mathematical Methods in Science and Engineering, CMMSE 2016 info:eu-repo/semantics/conferenceObject ORIGINAL STM-TLS.pdf STM-TLS.pdf application/pdf 289314 https://uvadoc.uva.es/bitstream/10324/29132/1/STM-TLS.pdf d8a4150736fae4d2f62a39926bdf2af9 MD5 1 CC-LICENSE license_url license_url text/plain 43 https://uvadoc.uva.es/bitstream/10324/29132/2/license_url 321f3992dd3875151d8801b773ab32ed MD5 2 license_text license_text text/html; charset=utf-8 0 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