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A primer on compression in the memor...
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Arelakis, Angelos,
A primer on compression in the memory hierarchy /
紀錄類型:
書目-電子資源 : Monograph/item
杜威分類號:
005.746
書名/作者:
A primer on compression in the memory hierarchy // Somayeh Sardashti, Angelos Arelakis, Per Stenstrom, David A. Wood
作者:
Sardashti, Somayeh,
其他作者:
Arelakis, Angelos,
面頁冊數:
1 online resource (xvii, 68 pages) : : illustrations
標題:
Data compression (Computer science)
標題:
Memory hierarchy (Computer science)
ISBN:
9781627057042
ISBN:
1627057048
書目註:
Includes bibliographical references (pages 55-66)
內容註:
1. Introduction -- 2. Compression algorithms -- 2.1 Value locality -- 2.2 Compression algorithm taxonomy -- 2.3 Classification of compression algorithms -- 2.3.1 Run-length encoding -- 2.3.2 Lempel-Ziv (LZ) coding -- 2.3.3 Huffman coding -- 2.3.4 Frequent value compression (FVC) -- 2.3.5 Frequent pattern compression (FPC) -- 2.3.6 Base-delta-immediate (BDI) -- 2.3.7 Cache packer (C-PACK) -- 2.3.8 Deduplication -- 2.3.9 Instruction compression -- 2.3.10 Floating-point compression -- 2.3.11 Hybrid compression -- 2.4 Metrics to evaluate the success of a compression algorithm -- 2.5 Summary -- 3. Cache compression -- 3.1 Cache compaction taxonomy -- 3.2 Cache compaction mechanisms -- 3.2.1 Simple compaction mechanisms -- 3.2.2 Supporting variable size compression -- 3.2.3 Decoupled compressed caches -- 3.2.4 Skewed compressed caches -- 3.3 Policies to manage compressed caches -- 3.4 Cache compression to improve cache power and area -- 3.5 Summary -- 4. Memory compression
摘要、提要註:
This synthesis lecture presents the current state-of-the-art in applying low-latency, lossless hardware compression algorithms to cache, memory, and the memory/cache link. There are many non- trivial challenges that must be addressed to make data compression work well in this context. First, since compressed data must be decompressed before it can be accessed, decompression latency ends up on the critical memory access path. This imposes a significant constraint on the choice of compression algorithms. Second, while conventional memory systems store fixed-size entities like data types, cache blocks, and memory pages, these entities will suddenly vary in size in a memory system that employs compression. Dealing with variable size entities in a memory system using compression has a significant impact on the way caches are organized and how to manage the resources in main memory. We systematically discuss solutions in the open literature to these problems
電子資源:
http://portal.igpublish.com/iglibrary/search/MCPB0000864.html
A primer on compression in the memory hierarchy /
Sardashti, Somayeh,
A primer on compression in the memory hierarchy /
Somayeh Sardashti, Angelos Arelakis, Per Stenstrom, David A. Wood - 1 online resource (xvii, 68 pages) :illustrations - Synthesis lectures on computer architecture,#361935-3243 ;. - Synthesis lectures in computer architecture ;#13..
Includes bibliographical references (pages 55-66)
1. Introduction -- 2. Compression algorithms -- 2.1 Value locality -- 2.2 Compression algorithm taxonomy -- 2.3 Classification of compression algorithms -- 2.3.1 Run-length encoding -- 2.3.2 Lempel-Ziv (LZ) coding -- 2.3.3 Huffman coding -- 2.3.4 Frequent value compression (FVC) -- 2.3.5 Frequent pattern compression (FPC) -- 2.3.6 Base-delta-immediate (BDI) -- 2.3.7 Cache packer (C-PACK) -- 2.3.8 Deduplication -- 2.3.9 Instruction compression -- 2.3.10 Floating-point compression -- 2.3.11 Hybrid compression -- 2.4 Metrics to evaluate the success of a compression algorithm -- 2.5 Summary -- 3. Cache compression -- 3.1 Cache compaction taxonomy -- 3.2 Cache compaction mechanisms -- 3.2.1 Simple compaction mechanisms -- 3.2.2 Supporting variable size compression -- 3.2.3 Decoupled compressed caches -- 3.2.4 Skewed compressed caches -- 3.3 Policies to manage compressed caches -- 3.4 Cache compression to improve cache power and area -- 3.5 Summary -- 4. Memory compression
This synthesis lecture presents the current state-of-the-art in applying low-latency, lossless hardware compression algorithms to cache, memory, and the memory/cache link. There are many non- trivial challenges that must be addressed to make data compression work well in this context. First, since compressed data must be decompressed before it can be accessed, decompression latency ends up on the critical memory access path. This imposes a significant constraint on the choice of compression algorithms. Second, while conventional memory systems store fixed-size entities like data types, cache blocks, and memory pages, these entities will suddenly vary in size in a memory system that employs compression. Dealing with variable size entities in a memory system using compression has a significant impact on the way caches are organized and how to manage the resources in main memory. We systematically discuss solutions in the open literature to these problems
ISBN: 9781627057042
Standard No.: 10.2200 / S00683ED1V01Y201511CAC036doiSubjects--Topical Terms:
404648
Data compression (Computer science)
Subjects--Index Terms:
cache designIndex Terms--Genre/Form:
344515
Electronic books
LC Class. No.: QA76.9.D33 / S276 2016
Dewey Class. No.: 005.746
A primer on compression in the memory hierarchy /
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1. Introduction -- 2. Compression algorithms -- 2.1 Value locality -- 2.2 Compression algorithm taxonomy -- 2.3 Classification of compression algorithms -- 2.3.1 Run-length encoding -- 2.3.2 Lempel-Ziv (LZ) coding -- 2.3.3 Huffman coding -- 2.3.4 Frequent value compression (FVC) -- 2.3.5 Frequent pattern compression (FPC) -- 2.3.6 Base-delta-immediate (BDI) -- 2.3.7 Cache packer (C-PACK) -- 2.3.8 Deduplication -- 2.3.9 Instruction compression -- 2.3.10 Floating-point compression -- 2.3.11 Hybrid compression -- 2.4 Metrics to evaluate the success of a compression algorithm -- 2.5 Summary -- 3. Cache compression -- 3.1 Cache compaction taxonomy -- 3.2 Cache compaction mechanisms -- 3.2.1 Simple compaction mechanisms -- 3.2.2 Supporting variable size compression -- 3.2.3 Decoupled compressed caches -- 3.2.4 Skewed compressed caches -- 3.3 Policies to manage compressed caches -- 3.4 Cache compression to improve cache power and area -- 3.5 Summary -- 4. Memory compression
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4.1 Baseline system architecture of a compressed memory system -- 4.2 Compression algorithms -- 4.3 Compressed memory organizations -- 4.3.1 The IBM MXT approach -- 4.3.2 The Ekman/Stenstrom approach -- 4.3.3 The decoupled zero-compression approach -- 4.3.4 The linear compressed pages approach -- 4.4 Summary -- 5. Cache/memory link compression -- 5.1 Link compression for narrow value locality -- 5.2 Link compression for clustered value locality -- 5.3 Link compression for temporal value locality -- 5.3.1 The citron scheme -- 5.3.2 Frequent value encoding -- 5.4 Link compression methods applied to compressed memory data -- 5.5 Summary -- 6. Concluding remarks -- References -- Authors' biographies
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Chapter 2 provides the foundations of data compression by first introducing the fundamental concept of value locality. We then introduce a taxonomy of compression algorithms and show how previously proposed algorithms fit within that logical framework. Chapter 3 discusses the different ways that cache memory systems can employ compression, focusing on the tradeoffs between latency, capacity, and complexity of alternative ways to compact compressed cache blocks. Chapter 4 discusses issues in applying data compression to main memory and Chapter 5 covers techniques for compressing data on the cache-to-memory links. This book should help a skilled memory system designer understand the fundamental challenges in applying compression to the memory hierarchy and introduce him/her to the state-of-the-art techniques in addressing them
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