Beyond straightforward vectorization of lightweight data compression algorithms for larger vector sizes

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Contributors

Abstract

Data as well as hardware characteristics are two key aspects for efficient data management. This holds in particular for the field of in-memory data processing. Aside from increasing main memory capacities, efficient in-memory processing benefits from novel processing concepts based on lightweight compressed data. Thus, an active research field deals with the adaptation of new hardware features such as vectorization using SIMD instructions to speeduplightweight data compression algorithms. Most of the vectorized. implementations have been proposed for 128-bit vector registers. A straightforward transformation to wider vector sizes is possible. However, this straightforward way does not exploit the capabilities of newer SIMD extensions to the maximum extent as we will show in this paper. On the one hand, we present a novel implementation concept for run-length encoding using conflict-detection operations which have been introduced in Intel's AVX-512 SIMD extension. On the other hand, we investigate different data layouts for vectorization and their impact on wider vector sizes. Copyright is held by the author/owner(s).

Details

Original languageEnglish
Title of host publicationGrundlagen von Datenbanken
EditorsGerhard Klassen, Stefan Conrad
Pages71-76
Number of pages6
Publication statusPublished - 2018
Peer-reviewedYes

Publication series

SeriesCEUR Workshop Proceedings
Volume2126
ISSN1613-0073

Conference

Title30th GI-Workshop Grundlagen von Datenbanken, GvDB 2018 - 30th GI-Workshop on the Foundations of Databases, GvDB 2018
Duration22 - 25 May 2018
CityWuppertal
CountryGermany

External IDs

Scopus 85049774436
ORCID /0000-0001-8107-2775/work/142253475

Keywords

ASJC Scopus subject areas