Clock Cycles Calculation for a Program

What are the clock cycles required for a program with 104 instructions divided into classes A, B, C, and D?

Calculating Clock Cycles for Each Class

To find the clock cycles required for the given program, we need to calculate the number of clock cycles needed for each class A, B, C, and D, assuming each instruction takes one clock cycle to execute. The distribution of instructions is as follows:

Class A: 15% of 104 instructions = 15.6 instructions = 15.6 clock cycles

Class B: 20% of 104 instructions = 20.8 instructions = 20.8 clock cycles

Class C: 40% of 104 instructions = 41.6 instructions = 41.6 clock cycles

Class D: 25% of 104 instructions = 26 instructions = 26 clock cycles

How can we convert the clock cycles to time for each class and determine the total clock cycles required for the program?

Converting Clock Cycles to Time

To convert the clock cycles required for each class to time, we use the clock frequency assumption of 2 GHz. The conversion formula is:

Class A: 15.6 clock cycles / 2 GHz = 7.8 nanoseconds

Class B: 20.8 clock cycles / 2 GHz = 10.4 nanoseconds

Class C: 41.6 clock cycles / 2 GHz = 20.8 nanoseconds

Class D: 26 clock cycles / 2 GHz = 13 nanoseconds

The total clock cycles required for the program is the sum of the clock cycles required for each class:

15.6 + 20.8 + 41.6 + 26 = 104 clock cycles

Therefore, assuming a clock frequency of 2 GHz, the total time required to execute the program is:

104 clock cycles / 2 GHz = 52 nanoseconds

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