NDLI: Optimizing Performance of Stencil Code with SPL Conqueror

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Optimizing Performance of Stencil Code with SPL Conqueror

Content Provider	Semantic Scholar
Author	Grebhahn, Alexander Siegmund, Norbert Apel, Sven Kuckuk, Sebastian Schmitt, Christian Köstler, Harald
Copyright Year	2014
Abstract	A standard technique to numerically solve elliptic partial differential equations on structured grids is to discretize them via nite dierences and then to apply an ecient geometric multi-grid solver. Unfortunately, nding the optimal choice of multi-grid components and parameters is challenging and platform dependent, especially, in cases where domain knowledge is incomplete. Auto-tuning is a viable alternative, but faces the problem of large conguration spaces and feature interactions. To improve the state of the art, we explore whether recent work on conguration optimization in product lines can be applied to the stencil-code domain. In particular, we extend and use the domain-independent tool SPL Conqueror in a series of experiments to predict the performance-optimal congurations of two geometric multigrid codes: a program using the HIPA cc framework and an evaluation prototype called HSMGP. For HIPA cc , we can predict the performance of all congurations with an accuracy of 98 %, on average, when measuring 57.5 % of the congurations,
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.exastencils.org/histencils/2014/papers/histencils2014_optimizing_with_spl_conqueror.pdf
Alternate Webpage(s)	http://www.infosun.fim.uni-passau.de/cl/publications/docs/GreSieApe+13.pdf
Alternate Webpage(s)	http://www.infosun.fim.uni-passau.de/publications/docs/GreSieApe+13.pdf
Alternate Webpage(s)	https://www12.cs.fau.de/downloads/schmittch/publications/GSAKSK14histencils.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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