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Parallel Wavelet Radiosity

Xavier Cavin 1 Laurent Alonso Jean-Claude Paul
1 ISA - Models, algorithms and geometry for computer graphics and vision
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : This paper presents parallel versions of a wavelet radiosity algorithm. Wavelet radiosity is based on a general framework of projection methods and wavelet theory. The resulting algorithm has a cost proportional to O(n) versus the O(n^2) complexity of the classical radiosity algorithms. However, designing a parallel wavelet radiosity is challenging because of its irregular and dynamic nature. Since explicit message passing approaches fail to deal with such applications, we have experimented various parallel implementations on a hardware ccNUMA architecture, the SGI Origin2000. Our experiments show that load balancing is a crucial performance issue to handle the dynamic distribution of work and communication, while we do make all reasonable efforts to exploit data locality efficiently. Our best results yield a speed-up of 24 with 36 processors, even when dealing with extremely complex models.
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  • HAL Id : inria-00098703, version 1



Xavier Cavin, Laurent Alonso, Jean-Claude Paul. Parallel Wavelet Radiosity. Proceedings of the Second Eurographics Workshop on Parallel Graphics and Visualisation, 1998, Rennes, France, pp.61-75. ⟨inria-00098703⟩



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