Question: CPU base CPI is 1 and clock rate is 2 GHz.D-cache miss rate = 4% and Miss penalty = 100 cycles. Load & stores are

CPU base CPI is 1 and clock rate is 2 GHz.D-cache miss rate = 4% and Miss penalty = 100 cycles.

Load & stores are 25% of instructions.

a.Find actual CPI

b.How much faster is the ideal cache?

c.Now we add L2 cache. Now add L-2 cache with Access time = 5ns and Global miss rate to main memory = 0.5% Primary miss with L-2 hit Penalty = 5ns and Primary miss with L - 2 miss Extra penalty = 400 cycles . Find the actual CPI for this case.

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