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Computer science Parallel computing Operating system Locality Generality Set (abstract data type) Memory address Embedded system Computer architecture Programming language Semiconductor memory Psychology Psychotherapist Linguistics Philosophy

Abhishek Singh , Shail Dave , Pantea Zardoshti , Robert Brotzman , Chao Zhang , Xiaochen Guo , Aviral Shrivastava , Gang Tan , Michael Spear ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.1145/3436730 · OA: W3117042881

General-purpose computing systems employ memory hierarchies to provide the appearance of a single large, fast, coherent memory. In special-purpose CPUs, programmers manually manage distinct, non-coherent scratchpad memories. In this article, we combine these mechanisms by adding a virtually addressed, set-associative scratchpad to a general purpose CPU. Our scratchpad exists alongside a traditional cache and is able to avoid many of the programming challenges associated with traditional scratchpads without sacrificing generality (e.g., virtualization). Furthermore, our design delivers increased security and improves performance, especially for workloads with high locality or that interact with nonvolatile memory.