Nuclear Data Needs and Capabilities for Applications Whitepaper
Abstract not provided
22 GENERAL STUDIES OF NUCLEAR REACTORS↗
Engineering topics
Slaybaugh, R
Publications and source records attributed to Slaybaugh, R.
Massively Parallel, Three-Dimensional Transport Solutions for the k-Eigenvalue Problem
We have implemented a new multilevel parallel decomposition in the Denovo dis- crete 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 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(100K) cores on the Jaguar XK6 supercomputer. The multilevel decomposition provides sucient parallelism to scale to exascale computing and beyond.
Arnoldi↗