A Load-balancing Tool for Structured Multi-block CFD Applications Applied to a Parallel Newton-Krylov Algorithm
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Bibliographic record
Abstract
For high-fidelity parallel computational fluid dynamic (CFD) simulations, multi-block grid methodology makes it possible to simulate flows around complex geometries. An automatic load-balancing tool is developed for a parallel Newton-Krylov algorithm that uses multi-block grids. The load-balancing tool uses a recursive edge bisection tool for splitting blocks to enforce load-balancing constraints. When homogeneous multi-block grids are used, an optional constraint is introduced to control block splitting. For heterogeneous multi-block grids, a block size constraint prevents smaller blocks from being split when the tool is started of with a smaller number of blocks than processors. The load-balancing tool is applied to three-dimensional multi-block grids for a Newton-Krylov solution process applied to the Euler and Reynolds-Averaged Navier-Stokes equations. For heterogeneous grids, significant reductions in turnaround time is obtained using the load-balancing tool than without a load-balancing tool. Finally, using the automatic tool, the scaling properties of the parallel Newton-Krylov algorithm are investigated.
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Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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