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New Supercomputing Study Findings Recently Were Reported by Researchers at Umm Al-Qura University (Weighted adaptive concurrency control for software...

July 31, 2014



New Supercomputing Study Findings Recently Were Reported by Researchers at Umm Al-Qura University (Weighted adaptive concurrency control for software transactional memory)

By a News Reporter-Staff News Editor at Computer Weekly News -- Current study results on Supercomputing have been published. According to news reporting originating in Mecca, Saudi Arabia, by VerticalNews editors, the research stated, "Transactional memory programs may have dynamic available parallelism, which is defined as the number of transactions that can be committed concurrently. Prior work presented adaptive concurrency control, which adapts the number of active threads at runtime, and thus the number of concurrently executing transactions, based on available parallelism."

The news reporters obtained a quote from the research from Umm Al-Qura University, "Reducing threads when available parallelism is low, and vice versa, improved speedup and reduced wasted work (in aborted transactions). However, prior work did not consider the case where individual threads exhibit dynamic available parallelism. Deactivating threads with low available parallelism, and vice versa, may improve speedup and reduce wasted work further. This paper introduces weighted adaptive concurrency control to exploit the variance in available parallelism between threads. Four algorithms are designed, implemented, and evaluated."

According to the news reporters, the research concluded: "They improve speedup and reduce wasted work over prior non-weighted algorithms in applications whose threads exhibit such variance, while maintaining performance parity in applications whose threads do not."

For more information on this research see: Weighted adaptive concurrency control for software transactional memory. Journal of Supercomputing, 2014;68(3):1027-1047. Journal of Supercomputing can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Journal of Supercomputing - www.springerlink.com/content/0920-8542/)

Our news correspondents report that additional information may be obtained by contacting M. Ansari, Umm Al Qura Univ, Dept. of Comp Sci, Mecca, Saudi Arabia.

Keywords for this news article include: Mecca, Saudi Arabia, Asia, Software, Supercomputing

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Computer Weekly News


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