During parallel multigrid computations, the Jocobi components along pseudoboundaries in the block by block relaxations operator become the main source todecrease the numerical efficiency of multigrid. We investigate t...
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During parallel multigrid computations, the Jocobi components along pseudoboundaries in the block by block relaxations operator become the main source todecrease the numerical efficiency of multigrid. We investigate these decrements indetail for constant coefficients Symmetric Positive Definite elliptic model problemsby error character1stic functions in this paper, then some strategies are gained. Atlast, advection-diffusion problems are addressed.
Based on the multilevel memory architectural high performance characteristics of the most popular microprocessors, this paper summarized and discussed some key techniques for parallelization and optimization of seven ...
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Based on the multilevel memory architectural high performance characteristics of the most popular microprocessors, this paper summarized and discussed some key techniques for parallelization and optimization of seven typical applied codes and model physical problems under both message passing MPI and shared memory OpenMP standard parallel programming paradigms. Typical benchmark results under six parallel computers are also given in detail in this paper.
In this paper, an adaptive mesh refinement technique is presented in numeri-cal solution of partial differential equations. Mainly including scanning function,refining/ derefine, and the method has been implemented ba...
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In this paper, an adaptive mesh refinement technique is presented in numeri-cal solution of partial differential equations. Mainly including scanning function,refining/ derefine, and the method has been implemented based on unstructuregrid and in Lagrangian or in Eulerian. Results are very helpful to the study of thenumerical simulation of detonation and study of explosive performances.
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