Coarse-grained parallelism for hierarchical radiosity using group iterative methods

Thomas Allen Funkhouser

Research output: Contribution to conferencePaperpeer-review

29 Scopus citations


This paper describes algorithms that allow multiple hierarchical radiosity solvers to work on the same radiosity solution in parallel. We have developed a system based on a group iterative approach that repeatedly: 1) partitions patches into groups, 2) distributes a copy of each group to a slave processor which updates radiosities for all patches in that group, and 3) merges the updates back into a master solution. The primary advantage of this approach is that separate instantiations of a hierarchical radiosity solver can gather radiosity to patches in separate groups in parallel with very little contention or communication overhead. This feature, along with automatic partitioning and dynamic load balancing algorithms, enables our implemented system to achieve significant speedups running on moderate numbers of workstations connected by a local area network. This system has been used to compute the radiosity solution for a very large model representing a five floor building with furniture.

Original languageEnglish (US)
Number of pages10
StatePublished - Dec 1 1996
EventProceedings of the 1996 Computer Graphics Conference, SIGGRAPH - New Orleans, LA, USA
Duration: Aug 4 1996Aug 9 1996


OtherProceedings of the 1996 Computer Graphics Conference, SIGGRAPH
CityNew Orleans, LA, USA

All Science Journal Classification (ASJC) codes

  • Computer Science(all)


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