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Shared Cache Based on Content Addressable Memory in a Multi-Core Architecture

Allam Abumwais*, Mahmoud Obaid

Computer Systems Engineering, Arab American University, Jenin, 240, Palestine

* Corresponding Author: Allam Abumwais. Email: email

Computers, Materials & Continua 2023, 74(3), 4951-4963. https://doi.org/10.32604/cmc.2023.032822

Abstract

Modern shared-memory multi-core processors typically have shared Level 2 (L2) or Level 3 (L3) caches. Cache bottlenecks and replacement strategies are the main problems of such architectures, where multiple cores try to access the shared cache simultaneously. The main problem in improving memory performance is the shared cache architecture and cache replacement. This paper documents the implementation of a Dual-Port Content Addressable Memory (DPCAM) and a modified Near-Far Access Replacement Algorithm (NFRA), which was previously proposed as a shared L2 cache layer in a multi-core processor. Standard Performance Evaluation Corporation (SPEC) Central Processing Unit (CPU) 2006 benchmark workloads are used to evaluate the benefit of the shared L2 cache layer. Results show improved performance of the multicore processor’s DPCAM and NFRA algorithms, corresponding to a higher number of concurrent accesses to shared memory. The new architecture significantly increases system throughput and records performance improvements of up to 8.7% on various types of SPEC 2006 benchmarks. The miss rate is also improved by about 13%, with some exceptions in the sphinx3 and bzip2 benchmarks. These results could open a new window for solving the long-standing problems with shared cache in multi-core processors.

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APA Style
Abumwais, A., Obaid, M. (2023). Shared cache based on content addressable memory in a multi-core architecture. Computers, Materials & Continua, 74(3), 4951-4963. https://doi.org/10.32604/cmc.2023.032822
Vancouver Style
Abumwais A, Obaid M. Shared cache based on content addressable memory in a multi-core architecture. Comput Mater Contin. 2023;74(3):4951-4963 https://doi.org/10.32604/cmc.2023.032822
IEEE Style
A. Abumwais and M. Obaid, "Shared Cache Based on Content Addressable Memory in a Multi-Core Architecture," Comput. Mater. Contin., vol. 74, no. 3, pp. 4951-4963. 2023. https://doi.org/10.32604/cmc.2023.032822



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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