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  4. A Visual Profiling System for Direct Volume Rendering
 
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2024
Conference Paper
Title

A Visual Profiling System for Direct Volume Rendering

Abstract
Direct Volume Rendering (DVR) is a crucial technique that enables interactive exploration of results from scientific computing or computer graphics. Its applications range from virtual prototyping for product design to computer-aided diagnosis in medicine. Although there are many existing DVR optimizations, they do not provide a thorough analysis of memory-specific hardware behavior. This paper introduces a profiling toolkit that enables the extraction of performance metrics, such as cache hit rates and branching, from a compiled GPU-based DVR application. The metrics are visualized in the image domain to facilitate spatial visual analysis. This paper presents a pipeline that automatically extracts memory traces using binary instrumentation, simulates the GPU memory subsystem, and models DVR-specific functionality within it. The profiler is demonstrated using the Octree-Linear Bounding Volume Hierarchy (OLBVH), and the visualized profiling metrics are explained based on the OLBVH implementation. Our discussion demonstrates that optimizing ray traversal for adaptive sampling, cache usage, branching, and global memory access has the potential to improve performance.
Author(s)
Buelow, Max von
TU Darmstadt, Fachgebiet Graphisch-Interaktive Systeme  
Ströter, Daniel
TU Darmstadt, Fachgebiet Graphisch-Interaktive Systeme  
Rak, Arne
TU Darmstadt, Fachgebiet Graphisch-Interaktive Systeme  
Fellner, Dieter
Fraunhofer-Institut für Graphische Datenverarbeitung IGD  
Mainwork
EG 2024 - Short Papers  
Conference
European Association for Computer Graphics (EG Conference) 2024  
Open Access
DOI
10.2312/egs.20241030
10.24406/publica-3035
File(s)
15_egs20241030.pdf (2.07 MB)
Rights
CC BY 4.0: Creative Commons Attribution
Language
English
Fraunhofer-Institut für Graphische Datenverarbeitung IGD  
Keyword(s)
  • Branche: Automotive Industry

  • Research Line: Computer graphics (CG)

  • LTA: Monitoring and control of processes and systems

  • 3D Rendering

  • Profiling systems

  • Visualization frameworks

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