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Computer Organization and Design | 5th Edition | ISBN: 9780124077263 | Authors: David A. Patterson
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Section 1.10 cites as a pitfall the utilization of a

Chapter 1, Problem 1.12

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QUESTION:

Section 1.10 cites as a pitfall the utilization of a subset of the performance equation as a performance metric. To illustrate this, consider the following two processors. P1 has a clock rate of 4 GHz, average CPI of 0.9, and requires the execution of 5.0E9 instructions. P2 has a clock rate of 3 GHz, an average CPI of 0.75, and requires the execution of 1.0E9 instructions.

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QUESTION:

Section 1.10 cites as a pitfall the utilization of a subset of the performance equation as a performance metric. To illustrate this, consider the following two processors. P1 has a clock rate of 4 GHz, average CPI of 0.9, and requires the execution of 5.0E9 instructions. P2 has a clock rate of 3 GHz, an average CPI of 0.75, and requires the execution of 1.0E9 instructions.

ANSWER:

Step 1 of 5

There are two processes P1, P2 with different clock rate, CPI (clock cycles per instruction) and number of instructions. The details are specified in the following table:

The formula to calculate the CPU time (Execution time) is given below:

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