Mgiyuk

When is it not possible to exploit spatial locality in cache? We are given a processor whose instructions operate on 8 - byte operands and whose instructions are also encoded using 8 bytes. We are using a 16 kilo-byte, 4-way set associative cache that contains 1024 sets. The cache has 4 * 1024 = 4096 cache lines in total. That means, each cache line is 16KB=4096 = 4 bytes, so each operand and each instruction needs to be stored in two cache lines, which will require 2 accesses to the cache for each load/store operation and instruction fetches. We are told that the cache cannot apply spatial locality, but why? What does spatial locality mean in this context? 1 Answer 1 So your machine doesn't have single byte loads/stores at all? If every load is a full cache line (or multiple whole cache lines), then bringing a line into cache for one load will never benefit another load that's spatially nea...