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False conflict reduction in the Swiss Transactional Memory (SwissTM) system | IEEE Conference Publication | IEEE Xplore

False conflict reduction in the Swiss Transactional Memory (SwissTM) system


Abstract:

Software Transactional Memory (STM) is a programming paradigm that allows a programmer to write parallel programs, without having to deal with the intricacies of synchron...Show More

Abstract:

Software Transactional Memory (STM) is a programming paradigm that allows a programmer to write parallel programs, without having to deal with the intricacies of synchronization. That burden is instead borne by the underlying STM system. SwissTM is a lock-based STM, developed at EPFL, Switzerland. Memory locations map to entries in a lock table to detect conflicts. Increasing the number of locations that map to a lock reduces the number of locks to be acquired and improves throughput, while also increasing the possibility of false conflicts. False conflicts occur when a transaction that updates a location mapping to a lock, causes validation failure of another transaction, that reads a different location mapping to the same lock. In this paper, we present a solution for the false conflict problem and suggest an adaptive version of the same algorithm, to improve performance. Our algorithms produce significant throughput improvement in benchmarks with false conflicts.
Date of Conference: 19-23 April 2010
Date Added to IEEE Xplore: 24 May 2010
ISBN Information:
Conference Location: Atlanta, GA, USA

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