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Predictive analysis of a hydrodynamics application on large-scale CMP clusters
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Davis, J. A., Mudalige, Gihan R., Hammond, Simon D., Herdman, J. A., Miller, I. and Jarvis, Stephen A. (2011) Predictive analysis of a hydrodynamics application on large-scale CMP clusters. Computer Science - Research and Development, Volume 26 (Number 3-4). pp. 175-185. doi:10.1007/s00450-011-0164-2
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Official URL: http://dx.doi.org/10.1007/s00450-011-0164-2
Abstract
We present the development of a predictive performance model for the high-performance computing code Hydra, a hydrodynamics benchmark developed and maintained by the United Kingdom Atomic Weapons Establishment (AWE). The developed model elucidates the parallel computation of Hydra, with which it is possible to predict its runtime and scaling performance on varying large-scale chip multiprocessor (CMP) clusters. A key feature of the model is its granularity; with the model we are able to separate the contributing costs, including computation, point-to-point communications, collectives, message buffering and message synchronisation. The predictions are validated on two contrasting large-scale HPC systems, an AMD Opteron/ InfiniBand cluster and an IBM BlueGene/P, both of which are located at the Lawrence Livermore National Laboratory (LLNL) in the US. We validate the model on up to 2,048 cores, where it achieves a > 85% accuracy in weak-scaling studies. We also demonstrate use of the model in exposing the increasing costs of collectives for this application, and also the influence of node density on network accesses, therefore highlighting the impact of machine choice when running this hydrodynamics application at scale.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | ||||
| Library of Congress Subject Headings (LCSH): | High performance computing, Hydrodynamics -- Computer programs | ||||
| Journal or Publication Title: | Computer Science - Research and Development | ||||
| Publisher: | Springer | ||||
| Place of Publication: | Hamburg, Germany | ||||
| ISSN: | 1865-2034 | ||||
| Official Date: | June 2011 | ||||
| Dates: |
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| Volume: | Volume 26 | ||||
| Number: | Number 3-4 | ||||
| Number of Pages: | 11 | ||||
| Page Range: | pp. 175-185 | ||||
| DOI: | 10.1007/s00450-011-0164-2 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Atomic Weapons Establishment (Great Britain) (AWE), University of Warwick. Centre for Scientific Computing, Science Research Investment Fund (SRIF) | ||||
| Grant number: | CDK0660 (AWE), CDK0724 (AWE) | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | Proceedings of the International Supercomputing Conference (ISC'11) | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Hamburg, Germany | ||||
| Date(s) of Event: | 19-23rd June 2011 |
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