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Chapter 9 เทคโนโลยีหน่วยความจำ Memory Technology. เนื้อหา. โครงสร้างของหน่วยความจำ หน่วยความจำแคชในไมโครโพรเซสเซอร์ การออกแบบหน่วยความจำแคชแบบต่างๆ - Direct mappe - Fully associative - Set associative. Technology Trend. CapacitySpeed Logic :2x in 3 years2x in 3 years - PowerPoint PPT Presentation
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240-334 Computer System Design Chapter 9 - Memory Technology 2
9Chapterเทคโนโลยหีน่วยความจำา
Memory Technology
240-334 Computer System Design Chapter 9 - Memory Technology 3
เน้ือหา
โครงสรา้งของหน่วยความจำาหน่วยความจำาแคชในไมโครโพรเซสเซอร์การออกแบบหน่วยความจำาแคชแบบต่างๆ- Direct mappe- Fully associative- Set associative
240-334 Computer System Design Chapter 9 - Memory Technology 4
Technology TrendCapacity Speed
Logic : 2x in 3 years 2x in 3 years
DRAM :4x in 3 years 2x in 10 years
Disk : 4x in 3 years 2x in 10 years
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Processor-DRAM memory Gap
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Expanded of Memory System
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Hierarchy of Modern computer
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How hierarchy manage?
Registers <--> Memory by compiler
Cache <--> Memory by Hardware
Memory <--> Disks by Hardware/OS, programmer (files)
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Logic Diagram of a Typical SRAM
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Typical of SRAM Timing
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Classical DRAM Organization
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Logic Diagram of a Typical DRAM
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Art of Memory Design
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1 KB Direct Mapped Cache with 32 B Blocks
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Example : Fully Associative
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A Two-way Set Associative Cache
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Disadvantage of Set Associative Cache
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How do you Design Cache?
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1 KB Direct mapped Cache, 32B blocks
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Improvement of Cache
Reduce Miss rate Reduce Miss penalty Reduce time to hit in cache
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Where can a block be placed
in the upper level?
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Example
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จบ บทท่ี 9
