Implementations of parallel grid assembly for moving body problems

Prewitt, Nathan C.; Afb, Eglin; Belk, Davy M.

doi:10.2514/6.1998-4344

Cited by 4 publications

(2 citation statements)

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“…In the phase II implementation Prewitt et al 10 showed an improvement in the parallel ef ciency by hiding the execution time of the grid assembly function behind that of the ow solver. This was possible because of the Newton-relaxation scheme used in the ow solver (complete details on the ow solver can be found in the literature; see Whit eld, 11 for example).…”

Section: Parallel Implementationsmentioning

confidence: 99%

“…Prewitt et al 10 presented the rst implementation,phase I, which used a single front-end (FE) process to perform the grid assembly in a serial fashion with respect to the parallel execution of the ow solver across multiple backend (BE) processes. Proper communication between the ow solver and the grid assembly function was required; however, no considerationwas given to load balancing or partitioning of the grid assembly function.…”

Section: Parallel Implementationsmentioning

confidence: 99%

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Improvements in Parallel Chimera Grid Assembly

2002

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Parallel implementation and performance assessment of the grid assembly function in a chimera grid approach, realized by the Beggar code, are presented. A mixed programming model is used combining message passing with shared-memory programming constructs using standard POSIX calls. The POSIX calls are used to store large, common data structures in shared memory. The associated reduction in the total memory requirements allows more processors to be used. The effective utilization of this increased processor count is based on improvements in load balancing because of a ner decomposition of the work associated with the grid assembly function. Parallel ef ciency is demonstrated using a three-store, ripple release, trajectory calculation.

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Section: Parallel Implementationsmentioning

confidence: 99%

Section: Parallel Implementationsmentioning

confidence: 99%