Performance Characteristics of Hardware Transactional Memory for Molecular Dynamics Application on BlueGene/Q: Toward Efficient Multithreading Strategies for Large-Scale Scientific Applications

Abstract

We have investigated the performance characteristics of hardware transactional memory (HTM) on the Blue Gene/Q computer in comparison with conventional concurrency control mechanisms, using a molecular dynamics application as an example. Benchmark tests, along with overhead-cost and scalability analysis, quantify relative performance advantages of HTM over other mechanisms. We found that the bookkeeping cost of HTM is high but that the rollback cost is low. We propose transaction fusion and spatially-compact scheduling techniques to reduce the overhead of HTM with minimal programming. A strong scalability benchmark shows that the fused HTM has the shortest runtime among various concurrency control mechanisms without extra memory. Based on the performance characterization, we derive a decision tree in the concurrency-control design space for multithreading application.

DOI: 10.1109/IPDPSW.2013.29

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Cite this paper

@article{Kunaseth2013PerformanceCO, title={Performance Characteristics of Hardware Transactional Memory for Molecular Dynamics Application on BlueGene/Q: Toward Efficient Multithreading Strategies for Large-Scale Scientific Applications}, author={Manaschai Kunaseth and Rajiv K. Kalia and Aiichiro Nakano and Priya Vashishta and David F. Richards and James N. Glosli}, journal={2013 IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum}, year={2013}, pages={1326-1335} }