$\backslash$table$[[$Instruction Type,$\backslash$table$[[$Instruction$],[$Count $($millions$)]],\backslash$table$[[$Cycles per$],[$Instruction$]]],[$Machine A$,,],[$Arithmetic and logic,$6,1],[$Load and store,$1,1],[$Branch$,3,4],[$Others$,5,4],[$Machine B$,4,1],[$Arithmetic and logic,$3,2],[$Load and store,$1,3],[$Branch$,6,4],[$Others$,,]]$

a$.$ Determine the effective CPI, MIPS rate, and execution time for each machine.

b$.$ Comment on the results.

$5.$ Four benchmark programs are executed on three computers with the following results:

$\backslash$table$[[,$Computer A$,$Computer B$,$Computer C$],[$Program $1,200,200,10],[$Program $2,300,500,50],[$Program $3,20,800,500],[$Program $4,100,1000,5000]]$ based on arithmetic mean and harmonic mean. $[15$ Points$]$

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