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Orientador(es)
Resumo(s)
Even though Software Transactional Memory (STM) is one of the most promising approaches to simplify concurrent programming, current STM implementations incur significant overheads that render them impractical for many real-sized programs. The key insight of this work is that we do not need to use the same costly barriers for all the memory managed by a real-sized application, if only a small fraction of the memory is under contention lightweight barriers may be used in this case. In this work, we propose a new solution based on an approach of adaptive object metadata (AOM) to promote the use of a fast path to access objects that are not under contention. We show that this approach is able to make the performance of an STM competitive with the best fine-grained lock-based approaches in some of the more challenging benchmarks. (C) 2015 Elsevier Inc. All rights reserved.
Descrição
Palavras-chave
Software transactional memory Runtime optimizations Concurrent programming
Contexto Educativo
Citação
CARVALHO, Fernando Miguel; CACHOPO, João - Optimizing memory transactions for large-scale programs. Journal of Parallel and Distributed Computing. ISSN 0743-7315. Vol. 89 (2016), pp. 13-24
Editora
Academic Press Inc Elsevier Science