Question 1: A program with 520 M instructions is run on two different processors, CPU1 and...
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Question 1: A program with 520 M instructions is run on two different processors, CPU1 and CPU2 with the following specifications: CPU1 specifications: 4.6 GHz clock and a CPI of 1.8 CPU2 specifications: 5.2 GHz clock and a CPI of 1.3 (a) How fast is CPU1 when compared to CPU2 while executing the above program? (5 points) (b) A designer decides to reduce the execution time of the program by 12%, by modifying the ISA. But the average CPI is increased by 18%. Thus, this requires a change in the clock rate. What clock rate is required on each of the CPUs to achieve this? (15 points) Question 2: The hardware implementation of a program uses different classes of instructions as shown in the Table below. This program is run on a Processor which has a clock rate 4.8 GHz. a. What is the CPI (cycles per instruction) for the program? (5 points) b. What is the performance of the Processor? (5 points) Instruction Class CPI Instruction Count ALU (A) 1 00 8 Unconditional Branch (B) 2 3 Conditional Branch (C) 3 6 Data transfer (D) 4 4 Question 1: A program with 520 M instructions is run on two different processors, CPU1 and CPU2 with the following specifications: CPU1 specifications: 4.6 GHz clock and a CPI of 1.8 CPU2 specifications: 5.2 GHz clock and a CPI of 1.3 (a) How fast is CPU1 when compared to CPU2 while executing the above program? (5 points) (b) A designer decides to reduce the execution time of the program by 12%, by modifying the ISA. But the average CPI is increased by 18%. Thus, this requires a change in the clock rate. What clock rate is required on each of the CPUs to achieve this? (15 points) Question 2: The hardware implementation of a program uses different classes of instructions as shown in the Table below. This program is run on a Processor which has a clock rate 4.8 GHz. a. What is the CPI (cycles per instruction) for the program? (5 points) b. What is the performance of the Processor? (5 points) Instruction Class CPI Instruction Count ALU (A) 1 00 8 Unconditional Branch (B) 2 3 Conditional Branch (C) 3 6 Data transfer (D) 4 4
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Related Book For
Computer Organization and Design The Hardware Software Interface
ISBN: 978-0124077263
5th edition
Authors: David A. Patterson, John L. Hennessy
Posted Date:
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