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math.NA2026
Low-Order Refined Preconditioning for Spectral/hp Element Method for Complex, 3D Geometries
Parv Khurana, Henrik Wüstenberg, Spencer J. Sherwin +3
Low-order refined (LOR) preconditioning replaces a high-order operator with a low-order discretisation on a refined nodal mesh. For tensor-product elements, the two operators are s…
math.NA2026
Architecture-aware -to- optimisation: spectral/ element operators for mixed-element meshes
Jacques Y. Xing, Boyang Xia, Diego Renner +4
We extend earlier international efforts to optimise hexahedral-based spectral element methods on GPUs and vectorised CPUs to mixed element meshes additionally involving prismatic,…