Multi-Level Parallelization Scheme for Distributed HEVC Encoding on Multi-Computer Systems

Tutkimustuotos: Conference contributionScientificvertaisarvioitu

5 Lataukset (Pure)

Abstrakti

High Efficiency Video Coding (HEVC) creates the conditions for cost-effective video transmission and storage but its inherent computational complexity calls for efficient parallelization techniques. This paper provides HEVC encoders with a holistic parallelization scheme that exploits parallelism at data, thread, and process levels at the same time. The proposed scheme is implemented in the practical Kvazaar open-source HEVC encoder. It makes Kvazaar exploit parallelism at three levels: 1) Single Instruction Multiple Data (SIMD) optimized coding tools at the data level; 2) Wavefront Parallel Processing (WPP) and Overlapped Wavefront (OWF) parallelization strategies at the thread level; and 3) distributed slice encoding on multi-computer systems at the process level. Our results show that the proposed process-level parallelization scheme increases the coding speed of Kvazaar by 1.86× on two computers and up to 3.92× on five computers with +0.19% and +0.81% coding losses, respectively. Exploiting all these three parallelism levels on a five-computer setup gives almost a 25× speedup over a non-parallelized single-core implementation.
AlkuperäiskieliEnglanti
Otsikko2020 IEEE International Symposium on Circuits and Systems (ISCAS)
KustantajaIEEE
Sivumäärä5
ISBN (elektroninen)978-1-7281-3320-1
ISBN (painettu)978-1-7281-3321-8
DOI - pysyväislinkit
TilaJulkaistu - 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaIEEE International Symposium on Circuits and Systems - Sevilla, Espanja
Kesto: 10 lokakuuta 202021 lokakuuta 2020
https://iscas2020.org/

Julkaisusarja

NimiIEEE International Symposium on Circuits and Systems proceedings
ISSN (painettu)0271-4302
ISSN (elektroninen)2158-1525

Conference

ConferenceIEEE International Symposium on Circuits and Systems
LyhennettäISCAS 2020
Maa/AlueEspanja
KaupunkiSevilla
Ajanjakso10/10/2021/10/20
www-osoite

Julkaisufoorumi-taso

  • Jufo-taso 1

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