Question

You are asked to optimize a cache design for the given references. Th ere are three direct-mapped cache designs possible, all with a total of 8 words of data: c1 has 1-word blocks, c2 has 2-word blocks, and c3 has 4-word blocks. In terms of miss rate, which cache design is the best? If the miss stall time is 25 cycles, and c1 has an access time of 2 cycles, c2 takes 3 cycles, and c3 takes 5 cycles, which is the best cache design?

Answer 1

Answer:

there can be three direct mapped cache designs possible because four mapped cache designs is not possible