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Parallel implementation of an adaptive scheme for 3d unstructured grids on the sp2
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Biswas, Rupak Strawn, Roger C. Oliker, Leonid |
| Copyright Year | 1996 |
| Description | Dynamic mesh adaption on unstructured grids is a powerful tool for computing unsteady flows that require local grid modifications to efficiently resolve solution features. For this work, we consider an edge-based adaption scheme that has shown good single-processor performance on the C90. We report on our experience parallelizing this code for the SP2. Results show a 47.0X speedup on 64 processors when 10 percent of the mesh is randomly refined. Performance deteriorates to 7.7X when the same number of edges are refined in a highly-localized region. This is because almost all the mesh adaption is confined to a single processor. However, this problem can be remedied by repartitioning the mesh immediately after targeting edges for refinement but before the actual adaption takes place. With this change, the speedup improves dramatically to 43.6X. |
| File Size | 752077 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960026756 |
| Archival Resource Key | ark:/13960/t3rv5gv2x |
| Language | English |
| Publisher Date | 1996-05-01 |
| Access Restriction | Open |
| Subject Keyword | Computer Programming And Software Computational Fluid Dynamics Refining Unstructured Grids Mathematics Architecture Computers Unsteady Flow Edges Programming Languages Memory Computers Parallel Processing Computers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
