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pFPC: A Parallel Compressor for Floating-Point Data

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2 Author(s)
Burtscher, M. ; Univ. of Texas, Austin, TX ; Ratanaworabhan, P.

This paper describes and evaluates pFPC, a parallel implementation of the lossless FPC compression algorithm for 64-bit floating-point data. pFPC can trade off compression ratio for throughput. For example, on a 4-core 3 GHz Xeon system, it compresses our nine datasets by 18% at a throughput of 1.36 gigabytes per second and by 41% at a throughput of 570 megabytes per second. Decompression is even faster. Our experiments show that the thread count should match or be a small multiple of the data's dimensionality to maximize the compression ratio and the chunk size should be at least equal to the system's page size to maximize the throughput.

Published in:

Data Compression Conference, 2009. DCC '09.

Date of Conference:

16-18 March 2009