Name
Title | ||
|---|---|---|
Adaptive decomposition and remapping algorithms for object-space-parallel direct volume rendering of unstructured grids |
Abstract | ||
|---|---|---|
Object space (OS) parallelization of an efficient direct volume rendering algorithm for unstructured grids on distributed-memory architectures is investigated. The adaptive OS decomposition problem is modeled as a graph partitioning (GP) problem using an efficient and highly accurate estimation scheme for view-dependent node and edge weighting. In the proposed model, minimizing the cutsize corresponds to minimizing the parallelization overhead due to the data communication and redundant computation/storage while maintaining the GP balance constraint corresponds to maintaining the computational load balance in parallel rendering. A GP-based, view-independent cell clustering scheme is introduced to induce more tractable view-dependent computational graphs for successive visualizations. As another contribution, a graph-theoretical remapping model is proposed as a solution to the general remapping problem and is used in minimization of the cell-data migration overhead. The remapping tool RM-MeTiS is developed by modifying the GP tool MeTiS and is used in partitioning the remapping graphs. Experiments are conducted using benchmark datasets on a 28-node PC cluster to evaluate the performance of the proposed models. |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1016/j.jpdc.2006.05.005 | J. Parallel Distrib. Comput. |
Keywords | Field | DocType |
accurate estimation scheme,gp tool,unstructured grids,graph-theoretical remapping model,adaptive decomposition,gp balance constraint corresponds,cell-data migration overhead,general remapping problem,remapping graph,unstructured grid,remapping algorithm,remapping tool,object-space-parallel direct volume rendering,object space parallelization,remapping,graph partitioning,direct volume rendering,adaptive os decomposition problem,load balance,parallel rendering,data migration | Graph theory,Parallel rendering,Parallel algorithm,Computer science,Parallel computing,Algorithm,Adaptive algorithm,Graph partition,Cluster analysis,Grid,Domain decomposition methods | Journal |
Volume | Issue | ISSN |
67 | 1 | Journal of Parallel and Distributed Computing |
Citations | PageRank | References |
13 | 0.82 | 33 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Cevdet Aykanat | 1 | 996 | 84.08 |
| B. Barla Cambazoglu | 2 | 735 | 38.87 |
| Ferit Findik | 3 | 13 | 0.82 |
| Tahsin M. Kurç | 4 | 1423 | 149.77 |