Design code to fit in CPU Cache?

Question

When writing simulations my buddy says he likes to try to write the program small enough to fit into cache. Does this have any real meaning? I understand that cache is faster

Answer 1

Here's a link to a really good paper on caches/memory optimization by Christer Ericsson (of God of War I/II/III fame). It's a couple of years old but it's still very relevant.