Gce Model Questions Vol1 2020 Computer Studies Question 28
Practice objective / multiple choice question 28 from the 2020 Gce Model Questions Vol1 Computer Studies examination.
A processor runs at 2.5 GHz. Its instruction mix is: 30 % ALU (CPI = 1), 25 % Load/Store (CPI = 2), 20 % Branch (CPI = 3), 25 % Floating‑point (CPI = 4). Load/Store instructions suffer a cache miss rate of 5 % and each miss adds a penalty of 20 cycles. (a) Compute the overall CPI of the processor. (b) If the cache is upgraded so that the miss rate falls to 2 % (all other parameters unchanged), compute the new CPI and the percentage improvement in performance.
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About This Question
This is Gce Model Questions Vol1 2020 Computer Studies Question 28. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Computer Studies examination.
Difficulty level: Medium .
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