Publication: TCOR: A Tile Cache with Optimal Replacement
Authors
Joseph, D. ; Aragón, J.L. ; Parcerisa, J.M. ; González, A,
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Publisher
IEEE
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DOI
https://doi.org/10.1109/HPCA53966.2022.00055
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info:eu-repo/semantics/lecture
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Description
Abstract
Cache Replacement Policies are known to have an important impact on hit rates. The OPT replacement policy [27] has been formally proven as optimal for minimizing misses. Due to its need to look far ahead for future memory accesses, it is often reduced to a yardstick for measuring the efficacy of other practical caches. In this paper, we bring the OPT to life, in architectures for mobile GPUs, for which energy efficiency is of great consequence. We also mold other factors in the memory hierarchy to enhance its impact. The end results are a 13.8% decrease in the memory hierarchy energy consumption and an increased throughput in the Tiling Engine. We also observe a 5.5% decrease in the total GPU energy and a 3.7% increase in frames per second (FPS).
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GPU , Caches , Cache Replacement , OPT , Belady , Energy-efficient , Pipelines , Memory management , Memory architecture
Citation
Proc. of the 28th IEEE Int. Symposium on High-Performance Computer Architecture (HPCA), Seoul, South Korea, pp. 662-675, ISBN: 978-1-6654-2027-3, Abril 2022
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