High-Speed Parallel Solution of the Neutron Diffusion Equation with the Hierarchical Domain Decomposition Boundary Element Method Incorporating Parallel Communications

摘要

A hierarchical domain decomposition boundary element method(HDD-BEM) for solving the multiregion neutron diffusion equation (NDE) has been fully parallelized, both for numerical computations and for data communications, to accomplish a high parallel efficiency on distributed memory message passing parallel computers. Data exchanges between node processors that are repeated during iteration processes of HDD- BEM are implemented, without any intervention of the host processor that was used to supervise parallel Processing in the conventional parallelized HDD-BEM(P-HDD-BEM).