Parallel I/O for 3D Volume Visualization

该项目正在应用并行I/O技术来减少体积可视化中的I/O延迟。计算机断层扫描和三维超声等应用产生的体积图像太大，无法放入随机访问帧缓冲器中。因此，磁盘I/O是体绘制的关键路径。该项目正在探索一种新的并行体绘制技术的使用，该技术以消除并行磁盘阵列中的I/O冲突的顺序遍历3D数据集。因此，磁盘阵列的整个带宽对渲染应用程序可用。在本项目中，使用该思想设计了一个高性能的体可视化服务器，并使用现成的组件进行了实现，并进行了评估。本科生研究经验补充将允许高级本科生通过实施和测量I/O密集型应用程序来为该项目做出贡献。对齐

This project is applying parallel I/O technology to reduce I/O delay in volume visualization. Volume images that arise from such applications as computer tomography and 3D ultrasound are too large to fit within random access frame buffers. As a result, disk I/O is in the critical path for volume rendering. This project is exploring the use of a new parallel volume rendering technique that traverses 3D data sets in an order that eliminates I/O conflicts in a parallel disk array. Consequently, the entire bandwidth of the disk array is available to the rendering application. In this project, a high performance volume visualization server using this idea is being designed, implemented with off-the-shelf components, and evaluated. A supplement supporting Research Experiences for Undergraduates will permit advanced undergraduate students to contribute to the project by implementing and measuring I/O intensive applications. JUSTIFICATION