NDLI: Extending stability beyond CPU millennium: a micron-scale atomistic simulation of Kelvin-Helmholtz instability

Content Provider	IEEE Xplore Digital Library
Author	Glosli, J. N. Richards, D. F. Caspersen, K. J. Rudd, R. E. Gunnels, J. A. Streitz, F. H.
Copyright Year	2007
Description	Author affiliation: IBM Corporation, Yorktown Heights, New York (Gunnels, J. A.) \|\| Lawrence Livermore National Laboratory, Livermore, CA (Glosli, J. N.; Richards, D. F.; Caspersen, K. J.; Rudd, R. E.; Streitz, F. H.)
Abstract	We report the computational advances that have enabled the first micron-scale simulation of a Kelvin-Helmholtz (KH) instability using molecular dynamics (MD). The advances are in three key areas for massively parallel computation such as on BlueGene/L (BG/L): fault tolerance, application kernel optimization, and highly efficient parallel I/O. In particular, we have developed novel capabilities for handling hardware parity errors and improving the speed of interatomic force calculations, while achieving near optimal I/O speeds on BG/L, allowing us to achieve excellent scalability and improve overall application performance. As a result we have successfully conducted a 2-billion atom KH simulation amounting to 2.8 CPU-millennia of run time, including a single, continuous simulation run in excess of 1.5 CPU-millennia. We have also conducted 9-billion and 62.5-billion atom KH simulations. The current optimized ddcMD code is benchmarked at 115.1 TFlop/s in our scaling study and 103.9 TFlop/s in a sustained science run, with additional improvements ongoing. These improvements enabled us to run the first MD simulations of micron-scale systems developing the KH instability.
Starting Page	1
Ending Page	11
File Size	424665
Page Count	11
File Format	PDF
ISBN	9781595937643
DOI	10.1145/1362622.1362700
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-11-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Association for Computing Machinery, Inc. (ACM)
Subject Keyword	Stability Processor scheduling Scheduling algorithm Information science Licenses Hardware Software algorithms Permission Computer science Concurrent computing
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Extending stability beyond CPU millennium: a micron-scale atomistic simulation of Kelvin-Helmholtz instability

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