Adaptive load balancing for raycasting of non-uniformly bricked volumes

作     者：Mueller, C. Strengert, M. Ertl, T. 

作者机构：Univ Stuttgart Inst Visualizat & Interact Syst D-70569 Stuttgart Baden Wurttembe Germany 

出 版 物：《PARALLEL COMPUTING》 (并行计算)

年 卷 期：2007年第33卷第6期

页      面：406-419页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Deutsche Forschungsgemeinschaft  DFG  (SFB 382) 

主　　题：distributed/network graphics viewing algorithms distributed applications 

摘      要：We describe a sort-last parallel volume rendering system based on single pass volume raycasting performed in the fragment shader unit. The architecture is aimed for displaying data sets that utilize the total distributed texture memory at interactive framerates. We use non-uniform texture bricks that are constructed and distributed by means of a kd-tree to employ object space partitioning. They are further used for implementing empty-space-skipping and a load balancing mechanism, which also makes use of the kd-tree, to increase the overall performance of the rendering system. Performance numbers are given for a mid-range GPU-cluster system consisting of eight render nodes with an Infiniband interconnection. (c) 2007 Elsevier B.V. All rights reserved.