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Towards portable performance for explicit hydrodynamics codes
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Mallinson, Andrew C., Beckingsale, David A., Gaudin, W. P., Herdman, J. A. and Jarvis, Stephen A. (2013) Towards portable performance for explicit hydrodynamics codes. In: 1st International Workshop on OpenCL (IWOCL 13), Atlanta, USA, 13 - 14 May 2013
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Official URL: http://iwocl.org/2013-presentations/
Abstract
Significantly increasing intra-node parallelism is widely recognised as being a key prerequisite for reaching exascale levels of computational performance. In future exascale systems it is likely that this performance improvement will be realised by increasing the parallelism available in traditional CPU devices and using massively-parallel hardware accelerators. The MPI programming model is starting to reach its scalability limit and is unable to take advantage of hardware accelerators; consequently, HPC centres (such as AWE) will have to decide how to develop their existing applications to best take advantage of future HPC system architectures. This work seeks to evaluate OpenCL as a candidate technology for implementing an alternative hybrid programming model, and whether it is able to deliver improved code portability whilst also maintaining or improving performance. On certain platforms the performance of our OpenCL imple- mentation is within 4% of an optimised native version.
| Item Type: | Conference Item (Paper) | ||||
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| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software Q Science > QC Physics |
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| Divisions: | Faculty of Science > Computer Science | ||||
| Library of Congress Subject Headings (LCSH): | High performance computing, OpenCL (Computer program language), Telecommunication -- Message processing, Parallel processing (Electronic computers), Hydrodynamics | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | Atomic Weapons Establishment (Great Britain) (AWE), Royal Society (Great Britain) | ||||
| Grant number: | CDK0660 (AWE), CDK0724 (AWE), IF090020/AM (Royal Society) | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 1st International Workshop on OpenCL (IWOCL 13) | ||||
| Type of Event: | Workshop | ||||
| Location of Event: | Atlanta, USA | ||||
| Date(s) of Event: | 13 - 14 May 2013 |
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