3-Assume a program requires the execution of 50 × 106 FP instructions, 110 × 106 INT instructions, 80 × 106 L/S instructions, and 16 x 106 branch instructions. The CPI for each type of instruction is 4, 2, 3, and 4, respectively. Assume that the processor has a 4 GHz clock rate. a. By how much must we improve the CPl of FP instructions if we want the pro- gram to run three times faster? b. By how much must we improve the CPI of L/S instructions if we want the pro- gram to run three times faster? c. By how much is the execution time of the program improved if the CPI of INT and FP instructions is reduced by 40% and the CPI of L/S and Branch is re- duced by 45%?
3-Assume a program requires the execution of 50 × 106 FP instructions, 110 × 106 INT instructions, 80 × 106 L/S instructions, and 16 x 106 branch instructions. The CPI for each type of instruction is 4, 2, 3, and 4, respectively. Assume that the processor has a 4 GHz clock rate. a. By how much must we improve the CPl of FP instructions if we want the pro- gram to run three times faster? b. By how much must we improve the CPI of L/S instructions if we want the pro- gram to run three times faster? c. By how much is the execution time of the program improved if the CPI of INT and FP instructions is reduced by 40% and the CPI of L/S and Branch is re- duced by 45%?
Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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
Transcribed Image Text:3-Assume a program requires the execution of 50 x 106 FP instructions, 110 x
106 INT instructions, 80 x 106 L/S instructions, and 16 × 106 branch instructions.
The CPI for each type of instruction is 4, 2, 3, and 4, respectively. Assume that
the processor has a 4 GHz clock rate.
a. By how much must we improve the CPI of FP instructions if we want the pro-
gram to run three times faster?
b. By how much must we improve the CPI of L/S instructions if we want the pro-
gram to run three times faster?
c. By how much is the execution time of the program improved if the CPI of INT
and FP instructions is reduced by 40% and the CPI of L/S and Branch is re-
duced by 45%?
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