By Jih-Ching Chiu, Kai-Ming Yang, Chen-Ang Wong (auth.), Yang Xiang, Ivan Stojmenovic, Bernady O. Apduhan, Guojun Wang, Koji Nakano, Albert Zomaya (eds.)
The quantity set LNCS 7439 and 7440 contains the complaints of the twelfth foreign convention on Algorithms and Architectures for Parallel Processing, ICA3PP 2012, in addition to a few workshop papers of the CDCN 2012 workshop which was once held along side this convention. The forty usual paper and 26 brief papers incorporated in those lawsuits have been rigorously reviewed and chosen from 156 submissions. The CDCN workshop attracted a complete of nineteen unique submissions, eight of that are integrated partly II of those complaints. The papers conceal many dimensions of parallel algorithms and architectures, encompassing primary theoretical methods, useful experimental effects, and advertisement parts and systems.
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Additional info for Algorithms and Architectures for Parallel Processing: 12th International Conference, ICA3PP 2012, Fukuoka, Japan, September 4-7, 2012, Proceedings, Part II
IEEE Transactions on Parallel and Distributed Systems-PrePrints 22(10) (October 2011) 13. : Strong Isolation is a Weak Idea. In: TRANS-ACT (2009) 14. : TLRW: Return of the Read-Write Lock. In: SPAA 2010 Conference Program, Thira, Santorini, Greece, pp. 284–293 (2010) 15. : A common Database Approach for OLTP and OLAP Using an InMemory Column Database. In: Proceedings of the 35th SIGMOD International Conference on Management of Data, pp. 1–2 (2009) 16. : COLR-Tree: Communication-Eﬃcient Spatio-Temporal Indexing for a Sensor Data Web Portal.
The reason was that each physics step was outputted once for each 30 objects in the single thread updating, but a ﬁnal aggregate updating was done (if there was no conﬂict) and only input and output once, and the passing of the I/O showing the results on monitor only took a short time to execute in the parallel physics steps. Furthermore, with the Intel hyper threading technology, the performance was not scalable because the physics cores were all ﬁlled with threads, and this made no diﬀerence in the case of virtual cores.
The eﬀect of eﬃciency for single core computing was the same as that for single thread computing. However, when we added to 2 cores and 4 cores, the eﬀect of conﬂicts on performance was decreasing. Especially in the 4 cores environment with 16 players, the conﬂicts took place when each of the threads was going through prevalidation. The conﬂicts occurred with 16 players and 8 players, and the number of conﬂicts was 120 times and 33 times in a cycle, respectively. Even with the number of conﬂicts causing the performance of the Barrier TM to be unacceptable, the aggregate physics updating was still fast, and the total execution time was around 2 to 3 times faster than the lock mechanism.
Algorithms and Architectures for Parallel Processing: 12th International Conference, ICA3PP 2012, Fukuoka, Japan, September 4-7, 2012, Proceedings, Part II by Jih-Ching Chiu, Kai-Ming Yang, Chen-Ang Wong (auth.), Yang Xiang, Ivan Stojmenovic, Bernady O. Apduhan, Guojun Wang, Koji Nakano, Albert Zomaya (eds.)