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Performance evaluation of a new cache replacement scheme using SPEC

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2 Author(s)
Khalid, H. ; Dept. of Electr. Eng., City Univ. of New York, NY, USA ; Obaidat, M.S.

Presents a new neural network-based algorithm called KORA (Khalid-Obaidat Replacement Algorithm), that uses a backpropagation neural network (BPNN) for the purpose of guiding the line/block replacement decisions in a cache. The KORA algorithm attempts to approximate the replacement decisions made by the optimal scheme (OPT). The key to our algorithm is to identify and subsequently discard the dead lines in cache memories. This allows our algorithm to provide better cache performance as compared to the conventional LRU (least recently used), MRU (most recently used) and FIFO (first-in, first-out) replacement policies. Extensive trace-driven simulations were performed for 30 different cache configurations using different SPEC (Standard Performance Evaluation Corp.) programs. Simulation results have shown that KORA can provide a substantial improvement in the miss ratio over the conventional algorithms. Our work opens up new dimensions for research in the development of new and improved page replacement schemes for virtual memory systems and disk caches

Published in:

Computers and Communications, 1996., Conference Proceedings of the 1996 IEEE Fifteenth Annual International Phoenix Conference on

Date of Conference:

27-29 Mar 1996