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BEGIN:VEVENT
DTSTAMP:20250822T115805Z
LOCATION:Campussaal - Plenary Room
DTSTART;TZID=Europe/Stockholm:20250617T103000
DTEND;TZID=Europe/Stockholm:20250617T110000
UID:submissions.pasc-conference.org_PASC25_sess150_posC105@linklings.com
SUMMARY:ACMP05 - A Performance Portable Matrix-Free Finite Element Framewo
 rk for Particle-Mesh Methods
DESCRIPTION:Sonali Mayani (Paul Scherrer Institute, ETH Zurich)\n\nComputi
 ng architectures are becoming increasingly complex and potent, as we reach
  new computing capacities. Currently the first three machines in the TOP50
 0 list are exascale systems. To be able to take full advantage of these ma
 chines, and even run on such heterogeneous architectures, it has become im
 perative for computational simulations to be massively parallelized and ha
 rdware portable. The IPPL framework is a C++ library which allows users to
  write Particle-Mesh simulations in a performant and portable way, as it c
 ontains all the building blocks required for such simulations, such as mes
 hes, particles, interpolation, and field solvers. We present a new solver 
 implemented inside IPPL, a matrix-free FEM-based Poisson solver working fr
 om 1 to 3 dimensions, implemented in a fully portable way using Kokkos. Th
 e Finite Element framework implemented in IPPL is itself done in a modular
  way, allowing one to build on top of it to solve other PDEs. We showcase 
 portability and performance by running scaling studies on the JEDI machine
  at Jülich Supercomputing Center, which has the new Nvidia GH200 GPUs, as 
 well as the JURECA machine of the same center, with Nvidia A100 GPUs.\n\nS
 ession Chair: David Moxey (King's College London)\n\n
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