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Question 1 (Multicore Performance) Part A Machine A Machine B 1 core 2 core 4 GHz clock 2 GHz clock Assume a computation takes 1000 cycles on a single core processor (Machine A). Seventy-five percent of this computation can be parallelized on a dual-core processor (Machine B). The clock rate on the dual core processor is 2 GHz while the clock rate on the single core processor is 4 GHz. What is the execution time of this computation on each processor? Which processor has better performance?

Answer 1

Processor A execution time=1000/4*(10^9)

=250*(10^-9)

=0.25*(10^-6)

=0.25μ

Processor B execution time=2000/2*(10^9)

=1000*(10^-9)

=1*(10^-6)

=1μ

so from execution times of processor A and processor B i,we can specify that processor A is faster than processor B because execution time is Minimum.