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Optimistic parallel discrete event simulations of physical systems using reverse computation

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6 Author(s)
Y. Tang ; Coll. of Comput., Georgia Inst. of Technol., Atlanta, GA, USA ; K. S. Perumalla ; R. M. Fujimoto ; H. Karimabadi
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Efficient computer simulation of complex physical phenomena has long been challenging due to their multi-physics and multi-scale nature. In contrast to traditional time-stepped execution methods, we describe an approach using optimistic parallel discrete event simulation (PDES) and reverse computation techniques. We show that reverse computation-based optimistic parallel execution can significantly reduce the execution time of a plasma simulation without requiring a significant amount of additional memory compared to conservative execution techniques. We describe an application-level reverse computation technique that is efficient and suitable for complex scientific simulations involving floating point operations.

Published in:

Workshop on Principles of Advanced and Distributed Simulation (PADS'05)

Date of Conference:

1-3 June 2005