Scalable cosmological simulations on parallel machines

Filippo Gioachin; Amit Sharma; Sayantan Chakravorty; Celso L. Mendes; Laxmikant V. Kalé; Thomas Quinn

doi:10.1007/978-3-540-71351-7_37

Scalable cosmological simulations on parallel machines

Filippo Gioachin, Amit Sharma, Sayantan Chakravorty, Celso L. Mendes, Laxmikant V. Kalé, Thomas Quinn

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Cosmological simulators are currently an important component in the study of the formation of galaxies and planetary systems. However, existing simulators do not scale effectively on more recent machines containing thousands of processors. In this paper, we introduce a new parallel simulator called ChaNGa (Charm N-body Gravity). This simulator is based on the CHARM++ infrastructure, which provides a powerful runtime system that automatically maps computation to physical processors. Using CHARM++ features, in particular its measurementbased load balancers, we were able to scale the gravitational force calculation of ChaNGa on up to one thousand processors, with astronomical dataseis containing millions of particles. As we pursue the completion of a production version of the code, our current experimental results show that ChaNGa may become a powerful resource for the astronomy community.

Original language	English (US)
Title of host publication	High Performance Computing for Computational Science - VECPAR 2006 - 7th International Conference, Revised Selected and Invited Papers
Publisher	Springer
Pages	476-489
Number of pages	14
ISBN (Print)	9783540713500
DOIs	https://doi.org/10.1007/978-3-540-71351-7_37
State	Published - 2007
Event	7th International Meeting on High-Performance Computing for Computational Science, VECPAR 2006 - Rio de Janeiro, Brazil Duration: Jun 10 2006 → Jun 13 2006

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	4395 LNCS
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Other

Other	7th International Meeting on High-Performance Computing for Computational Science, VECPAR 2006
Country/Territory	Brazil
City	Rio de Janeiro
Period	6/10/06 → 6/13/06

ASJC Scopus subject areas

Theoretical Computer Science
Computer Science(all)

Online availability

10.1007/978-3-540-71351-7_37

Library availability

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Gioachin, F., Sharma, A., Chakravorty, S., Mendes, C. L., Kalé, L. V., & Quinn, T. (2007). Scalable cosmological simulations on parallel machines. In High Performance Computing for Computational Science - VECPAR 2006 - 7th International Conference, Revised Selected and Invited Papers (pp. 476-489). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 4395 LNCS). Springer. https://doi.org/10.1007/978-3-540-71351-7_37

Scalable cosmological simulations on parallel machines. / Gioachin, Filippo; Sharma, Amit; Chakravorty, Sayantan et al.

High Performance Computing for Computational Science - VECPAR 2006 - 7th International Conference, Revised Selected and Invited Papers. Springer, 2007. p. 476-489 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 4395 LNCS).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Gioachin, F, Sharma, A, Chakravorty, S, Mendes, CL , Kalé, LV & Quinn, T 2007, Scalable cosmological simulations on parallel machines. in High Performance Computing for Computational Science - VECPAR 2006 - 7th International Conference, Revised Selected and Invited Papers. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 4395 LNCS, Springer, pp. 476-489, 7th International Meeting on High-Performance Computing for Computational Science, VECPAR 2006, Rio de Janeiro, Brazil, 6/10/06. https://doi.org/10.1007/978-3-540-71351-7_37

Gioachin F, Sharma A, Chakravorty S, Mendes CL , Kalé LV, Quinn T. Scalable cosmological simulations on parallel machines. In High Performance Computing for Computational Science - VECPAR 2006 - 7th International Conference, Revised Selected and Invited Papers. Springer. 2007. p. 476-489. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). https://doi.org/10.1007/978-3-540-71351-7_37

Gioachin, Filippo ; Sharma, Amit ; Chakravorty, Sayantan et al. / Scalable cosmological simulations on parallel machines. High Performance Computing for Computational Science - VECPAR 2006 - 7th International Conference, Revised Selected and Invited Papers. Springer, 2007. pp. 476-489 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)).

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Scalable cosmological simulations on parallel machines

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