(i) A program (or a program task) takes 700 million instructions to execute on a processor running at 3.8 GHz. Suppose that 20% of the instructions execute in 3 clock cycles, 30% execute in 4 clock cycles, and 50% execute in 5 clock cycles. What is the execution time for the program or task? (ii) Suppose the processor in the previous question part is redesigned so that all instructions that initially executed in 5 cycles and all instructions executed in 4 cycles now execute in 2 cycles. Due to changes in the circuitry, the clock rate also must be decreased from 3.8 GHz to 3.1 GHz. What is the overall percentage improvement in performance?

(i) A program (or a program task) takes 700 million instructions to execute on a processor running at 3.8 GHz. Suppose that 20% of the instructions execute in 3 clock cycles, 30% execute in 4 clock cycles, and 50% execute in 5 clock cycles. What is the execution time for the program or task? (ii) Suppose the processor in the previous question part is redesigned so that all instructions that initially executed in 5 cycles and all instructions executed in 4 cycles now execute in 2 cycles. Due to changes in the circuitry, the clock rate also must be decreased from 3.8 GHz to 3.1 GHz. What is the overall percentage improvement in performance?

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Help Please!

(i) A program (or a program task) takes 700 million instructions to execute on a processor running at 3.8 GHz.
Suppose that 20% of the instructions execute in 3 clock cycles, 30% execute in 4 clock cycles, and 50% execute in
5 clock cycles. What is the execution time for the program or task?
(ii) Suppose the processor in the previous question part is redesigned so that all instructions that initially executed
in 5 cycles and all instructions executed in 4 cycles now execute in 2 cycles. Due to changes in the circuitry, the
clock rate also must be decreased from 3.8 GHz to 3.1 GHz. What is the overall percentage improvement in
performance?

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