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Exploiting data coherence to improve parallel volume rendering

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2 Author(s)
Mackerras, P. ; Australian Nat. Univ., Canberra, ACT, Australia ; Corrie, B.

We have implemented a parallel volume renderer that successfully manages work and data distribution by exploiting data coherence-the tendency of neighboring pixels to use the same data during rendering, particularly when rendering volume data. This flexible, powerful renderer uses ray-casting on a Fujitsu AP1000 to generate high-quality images of volume data sets with other geometrically defined structures, such as a set of coordinate axes or a world map. This article focuses on our schemes for work and data distribution. Using image-space work distribution to partition a 2D image among processing nodes, and distributed virtual memory to assign 3D volume data, this renderer effectively and efficiently parallelizes volume rendering.<>

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Parallel & Distributed Technology: Systems & Applications, IEEE  (Volume:2 ,  Issue: 2 )