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

Manaschai Kunaseth, Rajiv K. Kalia, Aiichiro Nakano, Priya Vashishta, David F. Richards, James N. Glosli
2013 2013 IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum  
We have investigated the performance characteristics of hardware transactional memory (HTM) on the BlueGene/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
more » ... ally-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 concurrencycontrol design space for multithreading application.
doi:10.1109/ipdpsw.2013.29 dblp:conf/ipps/KunasethKNVRG13 fatcat:otsjmjsn7jaaldkvoywxxdge5a