'Set associative cache' diaporamas de présentation

CHAPTER 5

CHAPTER 5. 1977: DRAM faster than microprocessors. Since 1980, CPU has outpaced DRAM . How do architects address this gap? . Programmers want unlimited amounts of memory with low latency Fast memory technology is more expensive per bit than slower memory

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CSCI 4717/5717 Computer Architecture

CSCI 4717/5717 Computer Architecture. Topic: Cache Memory Reading: Stallings, Chapter 4. Cache. What is a cache? A cache is a small amount of very fast associative memory What makes small fast? Simpler decoding logic More expensive SRAM technology

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CS151B Computer Systems Architecture Winter 2002 TuTh 2-4pm - 2444 BH

CS151B Computer Systems Architecture Winter 2002 TuTh 2-4pm - 2444 BH. Lecture 16 Virtual Memory (cont), Buses, and I/O #1. Instructor: Prof. Jason Cong <cong@cs.ucla.edu>. Recall: Levels of the Memory Hierarchy. Upper Level. Capacity Access Time Cost. Staging Xfer Unit. faster.

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CpE 442 Cache Memory Design

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Cache Memories

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Chapter Seven Memory Hierarchy-2 by Patterson

Chapter Seven Memory Hierarchy-2 by Patterson. Hits vs. Misses. Increasing the block size usually decrease the miss rate and my go up eventually if the block size becomes a significant fraction of the cache size. Why?. Hits vs. Misses. Because:

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October, 2003 Saeid Nooshabadi saeid@unsw.au

COMP 3221 Microprocessors and Embedded Systems Lectures 35: Cache Memory - III http://www.cse.unsw.edu.au/~cs3221. October, 2003 Saeid Nooshabadi saeid@unsw.edu.au Some of the slides are adopted from David Patterson (USB). Outline. Fully Associative Cache N-Way Associative Cache

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Modified from notes by Saeid Nooshabadi saeid@unsw.au

COMP 3221 Microprocessors and Embedded Systems Lectures 12: Cache Memory - III http://www.cse.unsw.edu.au/~cs3221. Modified from notes by Saeid Nooshabadi saeid@unsw.edu.au Some of the slides are adopted from David Patterson (USB). Outline. Fully Associative Cache N-Way Associative Cache

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Cache Improvements

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Memory and cache

Memory and cache. CPU. Memory. I/O. The Memory Hierarchy. ~2ns ~4-5ns ~30ns ~220ns+ >1ms (~6ms). Registers. Primary cache. Larger. Secondary cache. Faster. More Expensive. Main memory. Magnetic disk. Cache & Locality. CPU. Main Memory.

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CPUs

CPUs. Caches. Memory management. Cache operation. Many main memory locations are mapped onto one cache entry. May have caches for: instructions; data; data + instructions ( unified ). Memory access time is no longer deterministic. address. data. cache. main memory. CPU. cache

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EECS 470

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Lecturer PSOE Dan Garcia cs.berkeley/~ddgarcia

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Computer Architecture Memory Hierarchy & Virtual Memory

Computer Architecture Memory Hierarchy & Virtual Memory. Some diagrams from Computer Organization and Architecture 5 th edition by William Stallings. Memory Hierarchy. CPU Registers 3-10 acc/cycl 32-64 words. Words. On-Chip Cache 1-2 access/cycle 5-10 ns 1KB-2MB. Lines.

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Cache Memory and Performance

Cache Memory and Performance. Many of the following slides are taken with permission from Complete Powerpoint Lecture Notes for Computer Systems: A Programmer's Perspective (CS:APP) Randal E. Bryant and David R. O'Hallaron http:// csapp.cs.cmu.edu/public/lectures.html

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Memory Systems Caching

Memory Systems Caching. Lecture 24 Digital Design and Computer Architecture Harris & Harris Morgan Kaufmann / Elsevier, 2007. The Memory Interface. The Ideal Memory System. Memory Hierarchy. Memory Performance. Hit: is found in that level of memory hierarchy

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Miss Reduction in Embedded Processors Through Dynamic, Power-Friendly Cache Design

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November 14th, 2007 Majd F. Sakr msakr@qatar.cmu qatar.cmu/~msakr/15447-f07/

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