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The computer spends 75% of the time computing and 25% waiting for the disk. The instruction mixes and the average cycles per instruction (CPI) for each type is: Type of instruction Integer Floating point Others % of Instructions CPI of instructions 35 3 40 12 25 4 Consider 3 modifications to the computer. Compute the speedup for each. a. The processor is replaced with a new one that reduces the total computation time by 30%. b. The disk is replaced with a solid-state device that reduces the disk waiting time by 70%. c. The processor is replaced with a new one that has improved floating point performance. The average floating-point CPI is reduced by 4; all other aspects are unchanged. d. Which modification gave the best speedup?

The computer spends 75% of the time computing and 25% waiting for the disk. The instruction mixes and the average cycles per instruction (CPI) for each type is: Type of instruction Integer Floating point Others % of Instructions CPI of instructions 35 3 40 12 25 4 Consider 3 modifications to the computer. Compute the speedup for each. a. The processor is replaced with a new one that reduces the total computation time by 30%. b. The disk is replaced with a solid-state device that reduces the disk waiting time by 70%. c. The processor is replaced with a new one that has improved floating point performance. The average floating-point CPI is reduced by 4; all other aspects are unchanged. d. Which modification gave the best speedup?

Computer Networking: A Top-Down Approach (7th Edition)
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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The computer spends 75% of the time computing and 25% waiting for the disk. The instruction mixes and the average cycles per instruction (CPI) for each type is: Type of instruction Integer Floating point Others % of Instructions CPI of instructions 35 3 40 12 25 4 Consider 3 modifications to the computer. Compute the speedup for each. a. The processor is replaced with a new one that reduces the total computation time by 30%. b. The disk is replaced with a solid-state device that reduces the disk waiting time by 70%. The processor is replaced with a new one that has improved floating point performance. The average floating-point CPI is reduced by 4; all other aspects are unchanged. d. Which modification gave the best speedup? с.
Transcribed Image Text:The computer spends 75% of the time computing and 25% waiting for the disk. The instruction mixes and the average cycles per instruction (CPI) for each type is: Type of instruction Integer Floating point Others % of Instructions CPI of instructions 35 3 40 12 25 4 Consider 3 modifications to the computer. Compute the speedup for each. a. The processor is replaced with a new one that reduces the total computation time by 30%. b. The disk is replaced with a solid-state device that reduces the disk waiting time by 70%. The processor is replaced with a new one that has improved floating point performance. The average floating-point CPI is reduced by 4; all other aspects are unchanged. d. Which modification gave the best speedup? с.
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