Chap 7: Memory Hierarchies
PPT Slide
Why memory hierarchies?
Impact on Performance
Memories: Review
Classical DRAM Organization (square)
Improvements to DRAM access time
Exploiting Memory Hierarchy
Locality: enables hierarchies ...
Modern memory hierarchy
Memory Hierarchy: Terminology
Cache
Direct Mapped Cache
Direct Mapped Cache: larger blocks
Hits vs. Misses
Reducing the miss penalty: hardware
Performance
Decreasing miss ratio with associativity
Implementation: 4-way set associative cache
Decreasing miss penalty with multilevel caches
Virtual Memory
Virtual memory terminology
Virtual memory design issues
Page Tables: implements fully-associative
Using page tables to access a word
Making Address Translation Fast
TLBs and caches: hierarchy in action
A common framework for virtual memory and caches
Common Framework (contd)
Common framework (contd)
Modern Systems
Current issues in memory hierarchies
Summary
Extras: More VM issues
VM issues (contd)
Email: shivkuma@ecse.rpi.edu
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