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Chapter 5 Large and Fast: Exploiting Memory Hierarchy
Memory Technology ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  §5.1 Introduction
Principle of Locality ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Taking Advantage of Locality ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Memory Hierarchy Levels ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Cache Memory ,[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  §5.2 The Basics of Caches ,[object Object],[object Object]
Direct Mapped Cache ,[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  ,[object Object],[object Object]
Tags and Valid Bits ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Cache Example ,[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  Index V Tag Data 000 N 001 N 010 N 011 N 100 N 101 N 110 N 111 N
Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  Index V Tag Data 000 N 001 N 010 N 011 N 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 22 10 110 Miss 110
Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  Index V Tag Data 000 N 001 N 010 Y 11 Mem[11010] 011 N 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 26 11 010 Miss 010
Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  Index V Tag Data 000 N 001 N 010 Y 11 Mem[11010] 011 N 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 22 10 110 Hit 110 26 11 010 Hit 010
Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  Index V Tag Data 000 Y 10 Mem[10000] 001 N 010 Y 11 Mem[11010] 011 Y 00 Mem[00011] 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 16 10 000 Miss 000 3 00 011 Miss 011 16 10 000 Hit 000
Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  Index V Tag Data 000 Y 10 Mem[10000] 001 N 010 Y 10 Mem[10010] 011 Y 00 Mem[00011] 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 18 10 010 Miss 010
Address Subdivision Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Example: Larger Block Size ,[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  Tag Index Offset 0 3 4 9 10 31 4 bits 6 bits 22 bits
Block Size Considerations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Cache Misses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Write-Through ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Write-Back ,[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Write Allocation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Example: Intrinsity FastMATH ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Example: Intrinsity FastMATH Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Main Memory Supporting Caches ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Increasing Memory Bandwidth Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Associative Caches ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Associative Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Spectrum of Associativity ,[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Associativity Example ,[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  Block address Cache index Hit/miss Cache content after access 0 1 2 3 0 0 miss Mem[0] 8 0 miss Mem[8] 0 0 miss Mem[0] 6 2 miss Mem[0] Mem[6] 8 0 miss Mem[8] Mem[6]
Associativity Example ,[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —  ,[object Object],Block address Cache index Hit/miss Cache content after access Set 0 Set 1 0 0 miss Mem[0] 8 0 miss Mem[0] Mem[8] 0 0 hit Mem[0] Mem[8] 6 0 miss Mem[0] Mem[6] 8 0 miss Mem[8] Mem[6] Block address Hit/miss Cache content after access 0 miss Mem[0] 8 miss Mem[0] Mem[8] 0 hit Mem[0] Mem[8] 6 miss Mem[0] Mem[8] Mem[6] 8 hit Mem[0] Mem[8] Mem[6]
How Much Associativity ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Set Associative Cache Organization Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Replacement Policy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
Multilevel Caches ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —

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Chapter 5 b

  • 1. Chapter 5 Large and Fast: Exploiting Memory Hierarchy
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10. Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy — Index V Tag Data 000 N 001 N 010 N 011 N 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 22 10 110 Miss 110
  • 11. Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy — Index V Tag Data 000 N 001 N 010 Y 11 Mem[11010] 011 N 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 26 11 010 Miss 010
  • 12. Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy — Index V Tag Data 000 N 001 N 010 Y 11 Mem[11010] 011 N 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 22 10 110 Hit 110 26 11 010 Hit 010
  • 13. Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy — Index V Tag Data 000 Y 10 Mem[10000] 001 N 010 Y 11 Mem[11010] 011 Y 00 Mem[00011] 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 16 10 000 Miss 000 3 00 011 Miss 011 16 10 000 Hit 000
  • 14. Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy — Index V Tag Data 000 Y 10 Mem[10000] 001 N 010 Y 10 Mem[10010] 011 Y 00 Mem[00011] 100 N 101 N 110 Y 10 Mem[10110] 111 N Word addr Binary addr Hit/miss Cache block 18 10 010 Miss 010
  • 15. Address Subdivision Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
  • 16.
  • 17.
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  • 20.
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  • 22.
  • 23. Example: Intrinsity FastMATH Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
  • 24.
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  • 27. Associative Cache Example Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
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  • 32. Set Associative Cache Organization Chapter 5 — Large and Fast: Exploiting Memory Hierarchy —
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Editor's Notes

  1. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  2. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  3. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  4. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  5. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  6. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  7. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  8. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  9. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  10. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  11. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  12. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  13. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  14. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
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  17. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  18. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
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  20. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
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  22. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
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  25. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
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  27. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
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  31. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  32. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  33. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy
  34. Morgan Kaufmann Publishers 9 March 2010 Chapter 5 — Large and Fast: Exploiting Memory Hierarchy