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Authors: Biagio Cosenza 1 ; Carsten Dachsbacher 2 and Ugo Erra 3

Affiliations: 1 Universität Innsbruck, Austria ; 2 Karlsruhe Institute of Technology, Germany ; 3 Università della Basilicata, Italy

ISBN: 978-989-8565-46-4

Keyword(s): Ray Tracing, Image-based Techniques, Parallel Rendering, GPU.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; High-Performance Computing and Parallel Rendering ; Real-Time Rendering ; Rendering ; Systems and Software Architectures for Rendering

Abstract: Interactive ray tracing has seen enormous progress in recent years. However, advanced rendering techniques requiring many million rays per second are still not feasible at interactive speed, and are only possible by means of highly parallel ray tracing. When using compute clusters, good load balancing is crucial in order to fully exploit the available computational power, and to not suffer from the overhead involved by synchronization barriers. In this paper, we present a novel GPU method to compute a cost map: a per-pixel cost estimate of the ray tracing rendering process. We show that the cost map is a powerful tool to improve load balancing in parallel ray tracing, and it can be used for adaptive task partitioning and enhanced dynamic load balancing. Its effectiveness has been proven in a parallel ray tracer implementation tailored for a cluster of workstations.

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Paper citation in several formats:
Cosenza, B.; Dachsbacher, C. and Erra, U. (2013). GPU Cost Estimation for Load Balancing in Parallel Ray Tracing.In Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2013) ISBN 978-989-8565-46-4, pages 139-151. DOI: 10.5220/0004283401390151

@conference{grapp13,
author={Biagio Cosenza. and Carsten Dachsbacher. and Ugo Erra.},
title={GPU Cost Estimation for Load Balancing in Parallel Ray Tracing},
booktitle={Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2013)},
year={2013},
pages={139-151},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004283401390151},
isbn={978-989-8565-46-4},
}

TY - CONF

JO - Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2013)
TI - GPU Cost Estimation for Load Balancing in Parallel Ray Tracing
SN - 978-989-8565-46-4
AU - Cosenza, B.
AU - Dachsbacher, C.
AU - Erra, U.
PY - 2013
SP - 139
EP - 151
DO - 10.5220/0004283401390151

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