Review: Memory Hierarchy 101

P

$

Memory

Very fast 1ns clock

Multiple Instructions

per cycle

SRAM, Fast, Small

Expensive

DRAM, Slow, Big,Cheap

(called physical or main)

=> Cost Effective Memory System (Price/Performance)

You should know how to draw block diagram of cache (fig 7.19)

and how to compute miss ratios, memory stall cycles, CPU time

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