5.6.3 [10] <5.10> “Prefetching” is a technique that leverages predictable address patterns to speculatively bring in additional cache lines when a particular cache line is accessed. One example of prefetching is a stream buffer that prefetches sequentially adjacent cache lines into a separate buffer when a particular cache line is brought in. If the data is found in the prefetch buffer, it is considered as a hit and moved into the cache and the next cache line is prefetched. Assume a twoentry stream buffer and assume that the cache latency is such that a cache line can be loaded before the computation on the previous cache line is completed. What is the miss rate for the address stream above?
Cache block size (B) can affect both miss rate and miss latency. Assuming a 1CPI machine with an average of 1.35 references (both instruction and dat
a) per instruction, help find the optimal block size given the following miss rates for various block sizes.
