Question: The Performance Equation is represented with respect to Program Execution Time, T. If we execute a program on a (1)RISC and (2)CISC computer, both of
The Performance Equation is represented with respect to Program Execution Time, T. If we execute a program on a (1)RISC and (2)CISC computer, both of them allow pipelined instruction execution; however, pipelining in the RISC(with a S value of 1.2) is more effective than in the CISC (with a S value of 1.5). Assume both machines have the same clock rate, R.
(i) What is the largest allowable value for N, the number of instructions executed on the RISC machine, expressed as a percentage of the N value for the CISC machine, if time for execution on the CISC machine is to be no longer than that on the RISC machine?
(ii)Repeat Part (i) if the clock rate, R, for the RISC machine is 15 percent higher than that for the CISC machine.
(iii) Repeat Part (ii), assuming that RISC machine has to finish execution consuming 10% less time that the CISC Machine.
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