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- W2071567139 abstract "We have implemented a new multilevel parallel decomposition in the Denovo discrete ordinates radiation transport code. In concert with Krylov subspace iterative solvers, the multilevel decomposition allows concurrency over energy in addition to space-angle, enabling scalability beyond the limits imposed by the traditional Koch-Baker-Alcouffe (KBA) space-angle partitioning. Furthermore, a new Arnoldi-based k-eigenvalue solver has been implemented. The added phase-space concurrency combined with the high-performance Krylov and Arnoldi solvers has enabled weak scaling to O(105) cores on the Titan XK7 supercomputer. The multilevel decomposition provides a mechanism for scaling to exascale computing and beyond." @default.
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- W2071567139 date "2014-06-01" @default.
- W2071567139 modified "2023-10-02" @default.
- W2071567139 title "Massively Parallel, Three-Dimensional Transport Solutions for the k-Eigenvalue Problem" @default.
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- W2071567139 doi "https://doi.org/10.13182/nse12-101" @default.
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