Explicit Cache Management for Volume Ray-Casting on Parallel Architectures (English)

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A major challenge when designing general purpose graphics hardware is to allow efficient access to texture data. Although different rendering paradigms vary with respect to their data access patterns, there is no flexibility when it comes to data caching provided by the graphics architecture. In this paper we focus on volume ray-casting, and show the benefits of algorithm-aware data caching. Our Marching Caches method exploits inter-ray coherence and thus utilizes the memory layout of the highly parallel processors by allowing them to share data through a cache which marches along with the ray front. By exploiting Marching Caches we can apply higher-order reconstruction and enhancement filters to generate more accurate and enriched renderings with an improved rendering performance. We have tested our Marching Caches with seven different filters, e. g., Catmul-Rom, Bspline, ambient occlusion projection, and could show that a speed up of four times can be achieved compared to using the caching implicitly provided by the graphics hardware, and that the memory bandwidth to global memory can be reduced by orders of magnitude. Throughout the paper, we will introduce the Marching Cache concept, provide implementation details and discuss the performance and memory bandwidth impact when using different filters.

Table of contents conference proceedings

The tables of contents are generated automatically and are based on the data records of the individual contributions available in the index of the TIB portal. The display of the Tables of Contents may therefore be incomplete.

1
HyperFlow: A Heterogeneous Dataflow Architecture
Vo, Huy T. / Osmari, Daniel K. / Comba, João / Lindstrom, Peter / Silva, Cláudio T. | 2012
11
PISTON: A Portable Cross-Platform Framework for Data-Parallel Visualization Operators
Lo, Li-ta / Sewell, Christopher / Ahrens, James | 2012
21
EAVL: The Extreme-scale Analysis and Visualization Library
Meredith, Jeremy S. / Ahern, Sean / Pugmire, Dave / Sisneros, Robert | 2012
31
Explicit Cache Management for Volume Ray-Casting on Parallel Architectures
Jönsson, Daniel / Ganestam, Per / Doggett, Michael / Ynnerman, Anders / Ropinski, Timo | 2012
41
GLuRay: Enhanced Ray Tracing in Existing Scientific Visualization Applications using OpenGL Interception
Brownlee, Carson / Fogal, Thomas / Hansen, Charles D. | 2012
51
A Study of Ray Tracing Large-scale Scientific Data in Two Widely Used Parallel Visualization Applications
Brownlee, Carson / Patchett, John / Lo, Li-Ta / DeMarle, David / Mitchell, Christopher / Ahrens, James / Hansen, Charles D. | 2012
61
Dynamic Scheduling for Large-Scale Distributed-Memory Ray Tracing
Navrátil, Paul A. / Fussell, Donald S. / Lin, Calvin / Childs, Hank | 2012
71
Fast Collision Culling in Large-Scale Environments Using GPU Mapping Function
Avril, Quentin / Gouranton, Valérie / Arnaldi, Bruno | 2012
81
Light Propagation Maps on Parallel Graphics Architectures
Gruson, Adrien / Patil, Ajit Hakke / Cozot, Remi / Bouatouch, Kadi / Pattanaik, Sumanta | 2012
89
Polygonization of Implicit Surfaces on Multi-Core Architectures with SIMD Instructions
Shirazian, Pourya / Wyvill, Brian / Duprat, Jean-Luc | 2012
99
Load-Balanced Multi-GPU Ambient Occlusion for Direct Volume Rendering
Ancel, Alexandre / Dischler, Jean-Michel / Mongenet, Catherine | 2012
109
Parallel Rendering on Hybrid Multi-GPU Clusters
Eilemann, Stefan / Bilgili, Ahmet / Abdellah, Marwan / Hernando, Juan / Makhinya, Maxim / Pajarola, Renato / Schürmann, Felix | 2012
119
Multi-GPU Image-based Visual Hull Rendering
Hauswiesner, Stefan / Khlebnikov, Rostislav / Steinberger, Markus / Straka, Matthias / Reitmayr, Gerhard | 2012
129
Shift-Based Parallel Image Compositing on InfiniBandTM Fat-Trees
Cavin, Xavier / Demengeon, Olivier | 2012
139
Auto Splats: Dynamic Point Cloud Visualization on the GPU
Preiner, Reinhold / Jeschke, Stefan / Wimmer, Michael | 2012
149
Time-constrained Animation Rendering on Desktop Grids
Aggarwal, Vibhor / Debattista, Kurt / Bashford-Rogers, Thomas / Chalmers, Alan | 2012
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