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- W2153166874 abstract "For SOR-like PDE solvers, loop tiling either helps little in improving data locality or hurts their performance. We present a novel compiler technique called code tiling for generating fast tiled codes for these solvers on uniprocessors with a memory hierarchy. Code tiling combines loop tiling with a new array layout transformation called data tiling in such a way that a significant amount of cache misses that would otherwise be present in tiled codes are eliminated. Compared to nine existing loop tiling algorithms, our technique delivers impressive performance speedups (faster by factors of 1.55-2.62) and smooth performance curves across a range of problem sizes on representative machine architectures. The synergy of loop tiling and data tiling allows us to find a problem-size-independent tile size that minimises a cache miss objective function independently of the problem size parameters. This one-size-fits-all scheme makes our approach attractive for designing fast SOR solvers without having to generate a multitude of versions specialised for different problem sizes." @default.
- W2153166874 created "2016-06-24" @default.
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- W2153166874 date "2003-01-01" @default.
- W2153166874 modified "2023-10-14" @default.
- W2153166874 title "Code tiling for improving the cache performance of PDE solvers" @default.
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- W2153166874 doi "https://doi.org/10.1109/icpp.2003.1240630" @default.
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