'Cache block' diaporamas de présentation

CMPT 300 Introduction to Operating Systems

CMPT 300 Introduction to Operating Systems. Cache. Acknowledgement: some slides are taken from CS61C course material at UC Berkeley. Agenda. Memory Hierarchy Direct Mapped Caches Cache Performance Set Associative Caches Multiprocessor Cache Consistency. Storage in a Computer. Processor

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CUDA Lecture 3 Parallel Architectures and Performance Analysis

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18-447: Computer Architecture Lecture 26: More Coherence and Interconnects

18-447: Computer Architecture Lecture 26: More Coherence and Interconnects. Prof. Onur Mutlu Carnegie Mellon University Spring 2012, 4/30/2012. Reminder: Lab Assignment 7. Cache coherence in multi-core systems MESI cache coherence protocol Due May 4

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CS2100 Computer Organisation comp.nus.sg/~cs2100/

CS2100 Computer Organisation http://www.comp.nus.edu.sg/~cs2100/. Cache I (AY2013/2014) Semester 2. Road Map: Part II. Performance. Assembly Language. Cache Part I Memory Hierarchy The Principle of Locality The Cache Principle Direct-Mapped Cache Cache Structure and Circuitry

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CHAPTER 7 LARGE AND FAST: EXPLOITING MEMORY HIERARCHY

CHAPTER 7 LARGE AND FAST: EXPLOITING MEMORY HIERARCHY. Topics to be covered Principle of locality Memory hierarchy Cache concepts and cache organization Virtual memory concepts Impact of cache & virtual memories on performance. PRINCIPLE OF LOCALITY.

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Caches

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Embedded Computer Architecture 5SAI0 Coherence, Synchronization and Memory Consistency ( ch 5b,7)

Embedded Computer Architecture 5SAI0 Coherence, Synchronization and Memory Consistency ( ch 5b,7). Henk Corporaal www.ics.ele.tue.nl/~heco/courses/ECA h.corporaal@tue.nl TUEindhoven 2016-2017. Welcome back. Shared memory architecture issues Coherence Synchronization Consistency

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Memory Hierarchy

Memory Hierarchy. Ali Azarpeyvand Advanced Computer Architecture. Review: Summary. Instruction Level Parallelism (ILP) in SW or HW Loop level parallelism is easiest to see SW parallelism dependencies defined for program, hazards if HW cannot resolve

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ParaLog : Enabling and Accelerating Online Parallel Monitoring of Multithreaded Applications

ParaLog : Enabling and Accelerating Online Parallel Monitoring of Multithreaded Applications. Evangelos Vlachos , Michelle L. Goodstein, Michael A. Kozuch , Shimin Chen, Phillip B. Gibbons, Babak Falsafi and Todd C. Mowry. Software Errors & Analysis Tools.

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Lecture 4.2

Lecture 4.2. Memory Hierarchy: Cache Basics. Learning Objectives. Given a 32-bit address, figure out the corresponding block address Given a block address, find the index of the cache line it maps to

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ECE232: Hardware Organization and Design

ECE232: Hardware Organization and Design. Part 15: Cache Chapter 5 (4 th edition), 7 (3 rd edition) http://www.ecs.umass.edu/ece/ece232/. Cache addressing. Memory. Cache. To Processor. How do you know if something is in the cache? (Q1) If it is in the cache, how to find it? (Q2)

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By Hongbin Sun, Nanning Zheng , and Tong Zhang

Leveraging Access Locality for the Efficient Use of Multibit Error-Correcting Codes in L2 Cache. Joseph Schneider March 23, 2010. By Hongbin Sun, Nanning Zheng , and Tong Zhang. The Problem. As CMOS technology shrinks, random defects increase

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Cache Coherency

Cache Coherency. Cache coherent processors reading processor must get the most current value most current value is the last write Cache coherency problem updates from 1 processor not known to others Mechanisms for maintaining cache coherency coherency state associated with a block of data

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Spatial locality

( m-k-n ) bits. k bits. n -bit Block Offset. Byte Address. Block Address. m -bit Address. Tag. Index. 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111. 0 1 2 3 4 5 6 7. Index. 0 1 2 3. Spatial locality. Caches load multiple

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Using Prediction to Accelerate Coherence Protocols

Using Prediction to Accelerate Coherence Protocols. Authors : Shubendu S. Mukherjee and Mark D. Hill 1998. Proceedings. The 25th Annual International Symposium on Computer Architecture Publication Date: 27 Jun-1 Jul 1998 On page(s): 179-190. Presenter : Naresh Sukumar. Motivation.

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Advanced Caching Techniques

Advanced Caching Techniques. Approaches to improving memory system performance eliminate memory operations decrease the number of misses decrease the miss penalty decrease the cache/memory access times hide memory latencies increase cache throughput increase memory bandwidth.

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EXAMPLE: Adding Prefetch Inst.

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CMP 301A Computer Architecture 1 Lecture 2

CMP 301A Computer Architecture 1 Lecture 2. Outline. Direct mapped caches: Reading and writing policies Measuring cache performance Improving cache performance Enhancing main memory performance Flexible placement of blocks: Associativity Multilevel caches. Read and Write Policies.

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Intro to cache memory

Intro to cache memory. Kosarev Nikolay MIPT Nov, 200 9. Agenda. Cache Placement of cache block Searching of data in the cache Replacement policies Write policies. Cache. Cache is a buffer for storing of data copies for rapid access

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