Computer Science
CPU Performance Equation
Estimate program execution time.
CPU Time = IC × CPI × Clock Cycle Time
Formula Explanation
Instruction count, cycles per instruction and clock speed determine performance.
Variables Explained
IC = instruction count; CPI = cycles per instruction.
Solved Example
IC=500, CPI=2, Clock=2 GHz. CPU time?
500 × 2 × 0.5 ns = 500 ns.