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L2C: Combining Loss...
L2C: Combining Lossy and Lossless Compression on Memory and I/O
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- Eldstål-Ahrens, Albin, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Arelakis, Angelos, 1984 (författare)
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- Sourdis, Ioannis, 1979 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2022-01-14
- 2022
- Engelska.
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Ingår i: Transactions on Embedded Computing Systems. - : Association for Computing Machinery (ACM). - 1558-3465 .- 1539-9087. ; 21:1
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Abstract
Ämnesord
Stäng
- In this paper we introduce L2C, a hybrid lossy/lossless compression scheme applicable both to the memory subsystem and I/O traffic of a processor chip. L2C employs general-purpose lossless compression and combines it with state of the art lossy compression to achieve compression ratios up to 16:1 and improve the utilization of chip's bandwidth resources. Compressing memory traffic yields lower memory access time, improving system performance and energy efficiency. Compressing I/O traffic offers several benefits for resource-constrained systems, including more efficient storage and networking. We evaluate L2C as a memory compressor in simulation with a set of approximation-tolerant applications. L2C improves baseline execution time by an average of 50\%, and total system energy consumption by 16%. Compared to the lossy and lossless current state of the art memory compression approaches, L2C improves execution time by 9% and 26% respectively, and reduces system energy costs by 3% and 5%, respectively. I/O compression efficacy is evaluated using a set of real-life datasets. L2C achieves compression ratios of up to 10.4:1 for a single dataset and on average about 4:1, while introducing no more than 0.4% error.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Datorsystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Computer Systems (hsv//eng)
Nyckelord
- Memory Systems
- Approximate Computing
- Compression
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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