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2007
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Fast memory footprint estimation based on maximal dependency vector calculation

14 years 1 months ago
Fast memory footprint estimation based on maximal dependency vector calculation
In data dominated applications, loop transformations have a huge impact on the lifetime of array data and therefore on memory footprint. Since a locally optimal loop transformation may have a detrimental effect somewhere else, many alternative loop transformations need to be explored. Therefore, estimation of the memory footprint is essential, and this estimation has to be fast. This paper presents a fast array based memory footprint estimation technique based on counting of iteration nodes in an iteration domain constrained by a maximal lifetime. The maximal lifetime is defined by the Maximal Dependency Vector (MDV) of the array for a given execution ordering. We further present for the first time two approaches for calculation of the MDV: a general approach based on an ILP formulation and a novel vertexes approach when iteration domains are approximated by bounding boxes. Experiments on practical test vehicles demonstrate that the estimation based on our vertexes approach is extre...
Qubo Hu, Arnout Vandecappelle, Per Gunnar Kjeldsbe
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where DATE
Authors Qubo Hu, Arnout Vandecappelle, Per Gunnar Kjeldsberg, Francky Catthoor, Martin Palkovic
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