Lecture Notes for Computer Architecture II - St. Cloud State University

Question 14
For the following set of variables, identify all of the subsets that can be used to
calculate execution tie. Each subset should be minimal; that is, it should not contain
any variable that is not needed.
{CPI, clock rate, cycle time. MIPS, number of instructions in program, number of
cycles in program}
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Number of Instruction in Program I
Number of Cycles in Program C
{Clock rate, C} CPU time = C/Clock rate
{Cycle time, C} CPU time = Cycle time*C
{MIPS, I} CPU time = I/MIPS
{CPI, C, MIPS} C/CPI*MIPS
{CPI, I, Clock rate} Ex. time = CPI*I*1/Clock rate
{CPI, I, Cycle time} Ex. time = CPI*I*Cycle time