Korbicz, Józef (1951- ) - red. ; Uciński, Dariusz - red.
A novel approach to generation of tiled code for arbitrarily nested loops is presented. It is derived via a combination of the polyhedral and iteration space slicing frameworks. Instead of program transformations represented by a set of affine functions, one for each statement, it uses the transitive closure of a loop nest dependence graph to carry out corrections of original rectangular tiles so that all dependences of the original loop nest are preserved under the lexicographic order of target tiles. ; Parallel tiled code can be generated on the basis of valid serial tiled code by means of applying affine transformations or transitive closure using on input an inter-tile dependence graph whose vertices are represented by target tiles while edges connect dependent target tiles. We demonstrate how a relation describing such a graph can be formed. The main merit of the presented approach in comparison with the well-known ones is that it does not require full permutability of loops to generate both serial and parallel tiled codes; this increases the scope of loop nests to be tiled.
Zielona Góra: Uniwersytet Zielonogórski
AMCS, volume 26, number 4 (2016) ; kliknij tutaj, żeby przejść
Biblioteka Uniwersytetu Zielonogórskiego
2024-11-05
2024-05-22
907
https://zbc.uz.zgora.pl/repozytorium/publication/89053
Nazwa wydania | Data |
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Tiling arbitrarily nested loops by means of the transitive closure of dependence graphs | 2024-11-05 |
Prodan, Ionela Olaru, Sorin Stoica, Cristina Niculescu, Silviu-Iulian Korbicz, Józef (1951- ) - red. Uciński, Dariusz - red.
Kherraf, Leila Kherraf, Sihem Hebhoub, Houria Belachia, Mouloud Kuczyński, Tadeusz - red.