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    Processor design: Evaluate performance improvement options

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    Processor X has a clock speed of 2Ghz and takes 1 cycle for integer operations, 2 cycles for memory operations, and 4 cycles for floating point operations. Empirical data shows that programs run on Processor X are typically composed of 35% floating point operations, 30% memory operations, and 35% integer operations.

    You are designing Processor Y, and improvement on Processor X which will run the same programs and you have 2 options to improve the performance:
    -Increase the clock speed to 2.4Ghz, but memory operations take 3 cycles.
    -Decrease the clock speed to 1.8 ghz, but floating point operations only take 3 cycles.

    Compute the speedup for options and decide the option Processor Y should take.

    © BrainMass Inc. brainmass.com October 10, 2019, 12:20 am ad1c9bdddf
    https://brainmass.com/computer-science/program-execution/processor-design-evaluate-performance-improvement-options-287748

    Solution Preview

    Average instruction execution time for programs on processor X = 1 * 35% + 2 * 30% + 4 * 35% cycles
    = 0.35 + 0.60 + 1.40 cycles
    = 2.35 cycles

    Average number of program instructions executed per second on processor X = 2 GHz / 2.35 cycles
    = 0.8510638298 * 10^9 instructions/second
    = 851063829.8 or 851063830 ...

    Solution Summary

    Solution evaluates the options in terms of average instructions executed per second.

    $2.19