Consider three different processors P1, P2, P3 executing the same set of instructions. P1 has a 3 GHz clock rate and a CPI of 1.5. P2 runs at 2 GHz and has a CPI of 1.2. P3 has a 4 GHz clock rate and a CPI of 2.4. a. Which processor has the highest performance in terms of instructions per second? b. If each processor executes a program in 5 second, find the number of cycles and the number of instructions for each processor. c. We would like to reduce the execution time by 20%. This will, however, increase the CPI by 25%. What clock rate do we need to obtain this amount of time reduction?
Consider three different processors P1, P2, P3 executing the same set of instructions. P1 has a 3 GHz clock rate and a CPI of 1.5. P2 runs at 2 GHz and has a CPI of 1.2. P3 has a 4 GHz clock rate and a CPI of 2.4. a. Which processor has the highest performance in terms of instructions per second? b. If each processor executes a program in 5 second, find the number of cycles and the number of instructions for each processor. c. We would like to reduce the execution time by 20%. This will, however, increase the CPI by 25%. What clock rate do we need to obtain this amount of time reduction?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Consider three different processors P1, P2, P3 executing the same set of instructions. P1
has a 3 GHz clock rate and a CPI of 1.5. P2 runs at 2 GHz and has a CPI of 1.2. P3 has a 4
GHz clock rate and a CPI of 2.4.
a. Which processor has the highest performance in terms of instructions per second?
b. If each processor executes a
number of instructions for each processor.
c. We would like to reduce the execution time by 20%. This will, however, increase
the CPI by 25%. What clock rate do we need to obtain this amount of time
reduction?
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