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DTSTAMP:20250822T115807Z
LOCATION:Room 5.0B15 & 16
DTSTART;TZID=Europe/Stockholm:20250618T150000
DTEND;TZID=Europe/Stockholm:20250618T153000
UID:submissions.pasc-conference.org_PASC25_sess131_msa123@linklings.com
SUMMARY:Multi-Physics Block Preconditioning for Ice-Sheet Dynamics in Alba
 ny Land Ice
DESCRIPTION:Jerry Watkins, Jonathan Hu, Ichitaro Yamazaki, Ray Tuminaro, a
 nd Mauro Perego (Sandia National Laboratories)\n\nThe development of robus
 t and efficient multi-physics block preconditioners is crucial for drastic
 ally improving the computational performance of large-scale, thermo-mechan
 ically coupled ice-sheet models. The primary challenge in simulating ice s
 heets at scale is solving the linear system associated with a thin, high-a
 spect ratio mesh. This problem is exacerbated by the coupling of first-ord
 er Stokes, a nonlinear elliptic problem for ice velocity, with the enthalp
 y formulation, an advection dominated problem. In this presentation, we sh
 ow the performance of various multi-physics preconditioning strategies to 
 assess a viable strategy for simulating the large, coupled ice-sheet model
  on large GPU supercomputers such as Perlmutter and Frontier.\n\nDomain: C
 omputational Methods and Applied Mathematics\n\nSession Chairs: Mauro Bian
 co (ETH Zurich / CSCS, ETH Zurich) and Nur Aiman Fadel (ETH Zurich / CSCS)
 \n\n
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