FPGA-based lossless compressors of floating-point data streams to enhance memory bandwidth

Kazuya Katahira, Kentaro Sano, Satoru Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

This paper presents an FPGA-based lossless compressor which directly compresses floating-point data streams to enhance the actual memory bandwidth of lattice Boltzmann method (LBM) accelerators. We show that the compression algorithms based on the 1D polynomial prediction are suitable for high-throughput hardware design. Moreover we show that integer operations provide comparable prediction performance to a floating-point predictor, while an integer predictor is expected to have smaller circuits than a floating-point one. We evaluate the compression ratio, the operating frequency and the resource consumption of the compressors with integer-based predictors through their prototype implementation using ALTERA Stratix III FPGA. We demonstrate that the implemented compressors dominate only 0.15 to 0.23 % of the entire logic resources and operate at 95 to 174 MHz to provide the compression ratio of up to 3.5, which means that we can enhance the memory bandwidth by a factor of 3.5 on average.

Original languageEnglish
Title of host publicationASAP 10 - 21st IEEE International Conference on Application-Specific Systems, Architectures and Processors, Conference Proceedings
Pages246-253
Number of pages8
DOIs
Publication statusPublished - 2010 Aug 27
Event21st IEEE International Conference on Application-specific Systems, Architectures and Processors, ASAP 2010 - Rennes, France
Duration: 2010 Jul 72010 Jul 9

Publication series

NameProceedings of the International Conference on Application-Specific Systems, Architectures and Processors
ISSN (Print)1063-6862

Other

Other21st IEEE International Conference on Application-specific Systems, Architectures and Processors, ASAP 2010
CountryFrance
CityRennes
Period10/7/710/7/9

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Networks and Communications

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    Katahira, K., Sano, K., & Yamamoto, S. (2010). FPGA-based lossless compressors of floating-point data streams to enhance memory bandwidth. In ASAP 10 - 21st IEEE International Conference on Application-Specific Systems, Architectures and Processors, Conference Proceedings (pp. 246-253). [5540973] (Proceedings of the International Conference on Application-Specific Systems, Architectures and Processors). https://doi.org/10.1109/ASAP.2010.5540973