NDLI: An evaluation of computing paradigms for N-body simulations on distributed memory architectures

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Content Provider	ACM Digital Library
Author	Mellor-Crummey, John McCurdy, Collin
Abstract	The efficiency of HPF with respect to irregular applications is still largely unproven. While recent work has shown that a highly irregular hierarchical n-body force calculation method can be implemented in HPF, we have found that the implmentation contains inefficiencies which cause it to run up to a factor of three times slower than our hand-coded, explicitly parallel implementation. Our work examines these inefficiencies, determines that most of the extra overhead is due to a single aspect of the communication strategy, and demonstrates that fixing the communication strategy can bring the overheads of the HPF application to within 25% of those of the hand-coded version.
Starting Page	25
Ending Page	36
Page Count	12
File Format	PDF
ISBN	1581131003
DOI	10.1145/301104.301107
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1999-05-01
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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An evaluation of computing paradigms for N-body simulations on distributed memory architectures