Which machine is faster for this program

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Reference no: EM132154465

A two-part question:

Part A

Assume that a design team is considering enhancing a machine by adding MMX (multimedia extension instruction) hardware to a processor.

When a computation is run in MMX mode onthe MMX hardware, it is 10 times faster than the normal mode of execution. Call the percentage of time that could be spent using the MMX mode the percentage of media enhancement.

(a) What percentage of media enhancement is needed to achieve an overall speedup of 2?

(b) What percentage of the run-time is spent in MMX mode if a speedup of 2 is achieved?

(c) What percentage of the media enhancement is needed to achieve one-half the maximum speedup attainable from using the MMX mode?

Part B

If processor A has a higher clock rate than processor B, and processor A also has a higher MIPS rating than processor B, explain whether processor A will always execute faster thanprocessor B.

Suppose that there are two implementations of the same instruction set architecture. Machine A has a clock cycle time of 20ns and an effective CPI of 1.5 for some program, andmachine B has a clock cycle time of 15ns and an effective CPI of 1.0 for the same program. Which machine is faster for this program, and by how much?

Reference no: EM132154465

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