3.(8 points - Correctness) Performance: Bower found two processors in another computer room and in this question we will compare the performance of two processors using a certain benchmark. Processor L1 Size L1 D-Cache Miss Rate L1 I-Cache Miss Rate L1 Hit Time P1 4KB 6% 2% 0.4ns P2 8KB 2% 4% 0.9ns We are also given that accesses to the main memory takes 90ns. Additionally Processor 2 has to execute 15% more instructions than Processor 1. It is also seen that only 30% of the instructions access memory (i.e, lw and sw instructions). Profiling the code also showed us that 15% of the instructions were branch instructions. Both processors support branch prediction with 90% of the branches being predicted accurately and mis-predicts with P1 having a 2 cycle penalty and P2 having a 3 cycle penalty. Assume that we have no data hazards. (a) If L1 Hit time determines the cycle time then what is the clock rate of P1 and P2 ? (b) Calculate how many cycles it takes to access data memory for both the processors. (c) Estimate the MCPI of the benchmark for both the processors. (Hint: You need to consider both instruction and data memory). There is no overlap between instruction misses and data misses so all penalties are additive. (d) Estimate the BCPI (Contribution due to branches) for both the processors (e) Considering just this benchmark, which of these processors is faster? Hint: Use execution time