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Software transactional memory (STM) enhances both ease-of-use and concurrency, and is considered one of the next-generation paradigms for parallel programming. Application programs may see hotspots where data conflicts are intensive and seriously degrade the performance. So advanced STM systems employ dynamic concurrency control techniques to curb the conflict rate through properly throttling the...
To achieve single-lock atomicity in software transactional memory systems, the commit procedure often goes through a common clock variable. When there are frequent transactional commits, clock sharing becomes inefficient. Tremendous cache contention takes place between the processors and the computing throughput no longer scales with processor count. Therefore, traditional transactional memories are...
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