Consider a 16 MB 16-way L3 cache that is shared by two programs A and B. There

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Consider a 16 MB 16-way L3 cache that is shared by two programs A and B. There is a mechanism in the cache that monitors cache miss rates for each program and allocates 1–15 ways to each program such that the overall number of cache misses is reduced. Assume that program A has an MPKI of 100 when it is assigned 1 MB of the cache. Each additional 1 MB assigned to program A reduces the MPKI by 1. Program B has an MPKI of 50 when it is assigned 1 MB of cache; each additional 1 MB assigned to program B reduces its MPKI by 2. What is the best allocation of ways to programs A and B?

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Computer Architecture A Quantitative Approach

ISBN: 9780128119051

6th Edition

Authors: John L. Hennessy, David A. Patterson

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