Let there are three different processors P1, P2, and P3 executing the same instruction set. P1 has a 3.3 GHz clock rate and a CPI of 1.6. P2 has a 2.8 GHz clock rate and a CPI of 1.2. P3 has a 4.0 GHz clock rate and has a CPI of 2.2. a. Which processor has the highest performance expressed in instructions per second? b. If the processors each execute a program in 9 seconds, find the number of cycles and the number of instructions. c. We are trying to reduce the execution time by 33°, but this leads to an increase of 22% in the CPI. What cfock rate should we have to get this time reduction?

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
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Let there are three different processors P1, P2, and P3 executing the same instruction set. P1 has a 3.3 GHz
clock rate and a CPI of 1.6. P2 has a 2.8 GHz clock rate and a CPI of 1.2. P3 has a 4.0 GHz clock rate and has
a CPI of 2.2.
a. Which processor has the highest performance expressed in instructions per second?
b. If the processors each execute a program in 9 seconds, find the number of cycles and the number of
instructions.
c. We are trying to reduce the execution time by 33°%, but this leads to an increase of 22% in the CPI. What
cłock rate should we have to get this time reduction?
Transcribed Image Text:Let there are three different processors P1, P2, and P3 executing the same instruction set. P1 has a 3.3 GHz clock rate and a CPI of 1.6. P2 has a 2.8 GHz clock rate and a CPI of 1.2. P3 has a 4.0 GHz clock rate and has a CPI of 2.2. a. Which processor has the highest performance expressed in instructions per second? b. If the processors each execute a program in 9 seconds, find the number of cycles and the number of instructions. c. We are trying to reduce the execution time by 33°%, but this leads to an increase of 22% in the CPI. What cłock rate should we have to get this time reduction?
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