Parallel Tiled Code Generation with Loop Permutation within Tiles

Year, pages: 2017, 1261 - 1282

An approach of generation of tiled code with an arbitrary order of loops within tiles is presented. It is based on the transitive closure of the program dependence graph and derived via a combination of the Polyhedral and Iteration Space Slicing frameworks. The approach is explained by means of a working example. Details of an implementation of the approach in the TRACO compiler are outlined. Increasing tiled program performance due to loop permutation within tiles is illustrated on real-life programs from the NAS Parallel Benchmark suite. An analysis of speed-up and scalability of parallel tiled code with loop permutation is presented.

Palkowski, M., Bielecki, W. 2017. Parallel Tiled Code Generation with Loop Permutation within Tiles. In Computing and Informatics, vol. 36, no.6, pp. 1261-1282. 1335-9150. DOI: https://doi.org/10.4149/cai_2017_6_1261

Palkowski, M., Bielecki, W. (2017). Parallel Tiled Code Generation with Loop Permutation within Tiles. Computing and Informatics, 36(6), 1261-1282. 1335-9150. DOI: https://doi.org/10.4149/cai_2017_6_1261