Memory Hierarchy Exploits the principle of locality. Use a small fast (expensive) memory. Use a large slow (cheap) memory. All data found in one level is also found in the level below. Goals: Catch most of the references in the fast memory. Have most of the cost per byte be at the slow memory level. Will see that memory hierarchy is used to implement protection schemes as well.

Chapter 7: Large and Fast: Exploiting Memory Hierarchy - 3 of 67