EAN: 9783031006005

SYNTHESIS LECTURES ON COMPUTER ARCHITECTURE T...

The advent of multicore processors has renewed interest in the idea of incorporating
transactions into the programming model used to write parallel programs. This approach  known
as transactional memory  offers an alternative  and hopefully better  way to coordinate
concurrent threads. The ACI (atomicity  consistency  isolation) properties of transactions
provide a foundation to ensure that concurrent reads and writes of shared data do not produce
inconsistent or incorrect results. At a higher level  a computation wrapped in a transaction
executes atomically - either it completes successfully and commits its result in its entirety
or it aborts. In addition  isolation ensures the transaction produces the same result as if no
other transactions were executing concurrently. Although transactions are not a parallel
programming panacea  they shift much of the burden of synchronizing and coordinating parallel
computations from a programmer to a compiler  to a language runtime system  or to hardware. The
challenge for the system implementers is to build an efficient transactional memory
infrastructure. This book presents an overview of the state of the art in the design and
implementation of transactional memory systems  as of early spring 2010. Table of Contents:
Introduction   Basic Transactions   Building on Basic Transactions   Software Transactional
Memory   Hardware-Supported Transactional Memory   Conclusions

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