Name
Abstract | ||
|---|---|---|
The overset grid methodology has significantly reduced time-to-solution of high-fidelity computational fluid dynamics (CFD) simulations about complex aerospace configurations. The solution process resolves the geometrical complexity of the problem domain by using separately generated but overlapping structured discretization grids that periodically exchange information through interpolation. However, high performance computations of such large-scale realistic applications must be handled efficiently on state-of-the-art parallel supercomputers. This paper analyzes the effects of various performance enhancement strategies on the parallel efficiency of an overset grid Navier-Stokes CFD application running on an SGI Origin2000 machine. Specifically, the role of asynchronous communication, grid splitting, and grid grouping strategies are presented and discussed. Details of a sophisticated graph partitioning technique for grid grouping are also provided. Results indicate that performance depends critically on the level of latency hiding and the quality of load balancing across the processors. |
Year | DOI | Venue |
|---|---|---|
2003 | 10.1016/j.parco.2003.05.019 | Parallel Computing |
Keywords | Field | DocType |
computational fluid dynamics,load balancing,grid splitting,parallel efficiency,grid grouping,multi-block applications,state-of-the-art parallel supercomputers,various performance enhancement strategy,cfd application,parallel performance,multi-block overset grid,high performance computation,overset grid methodology,overset grid,discretization grid,graph partitioning,simulation,load balance,asynchronous communication | Discretization,Asynchronous communication,Problem domain,Load balancing (computing),Computer science,Interpolation,Parallel computing,Computational fluid dynamics,Graph partition,Grid | Journal |
Volume | Issue | ISSN |
29 | 11-12 | Parallel Computing |
Citations | PageRank | References |
4 | 1.57 | 3 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| M. Jahed Djomehri | 1 | 37 | 12.64 |
| Rupak Biswas | 2 | 922 | 109.66 |