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dc.contributor.authorDüben, Peter D.
Joven, Jaume
Lingamneni, Avinash
McNamara, Hugh
De Micheli, Giovanni
Palem, Krishna V.
Palmer, T.N.
dc.date.accessioned 2014-10-07T21:52:28Z
dc.date.available 2014-10-07T21:52:28Z
dc.date.issued 2014
dc.identifier.citation Düben, Peter D., Joven, Jaume, Lingamneni, Avinash, et al.. "On the use of inexact, pruned hardware in atmospheric modelling." Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences, 372, no. 2018 (2014) Royal Society: 20130276. http://dx.doi.org/10.1098/rsta.2013.0276.
dc.identifier.urihttps://hdl.handle.net/1911/77431
dc.description.abstract Inexact hardware design, which advocates trading the accuracy of computations in exchange for significant savings in area, power and/or performance of computing hardware, has received increasing prominence in several error-tolerant application domains, particularly those involving perceptual or statistical end-users. In this paper, we evaluate inexact hardware for its applicability in weather and climate modelling. We expand previous studies on inexact techniques, in particular probabilistic pruning, to floating point arithmetic units and derive several simulated set-ups of pruned hardware with reasonable levels of error for applications in atmospheric modelling. The set-up is tested on the Lorenz ‘96 model, a toy model for atmospheric dynamics, using software emulation for the proposed hardware. The results show that large parts of the computation tolerate the use of pruned hardware blocks without major changes in the quality of short- and long-time diagnostics, such as forecast errors and probability density functions. This could open the door to significant savings in computational cost and to higher resolution simulations with weather and climate models
dc.language.iso eng
dc.publisher Royal Society
dc.rightsPublished by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited.
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.title On the use of inexact, pruned hardware in atmospheric modelling
dc.type Journal article
dc.contributor.funder Oxford Martin School
dc.contributor.funder European Research Council
dc.citation.journalTitle Philosophical Transactions of the Royal Society A: Mathematical, Physical & Engineering Sciences
dc.subject.keywordenergy efficient computing
Lorenz ’96
inexact hardware design
scale separation
dc.citation.volumeNumber 372
dc.citation.issueNumber 2018
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1098/rsta.2013.0276
dc.identifier.pmcid PMC4024232
dc.identifier.pmid 24842031
dc.identifier.grantID LC0910-017 (Oxford Martin School)
dc.identifier.grantID 291406 (European Research Council)
dc.identifier.grantID 2009-adG-246810 (European Research Council)
dc.type.publication publisher version
dc.citation.firstpage 20130276


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