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UID:submissions.pasc-conference.org_PASC24_sess154_msa120@linklings.com
SUMMARY:Scalable and Performance Portable Particle and Structured-Mesh Sim
 ulation with Cabana
DESCRIPTION:Minisymposium\n\nSam Reeve, Lance Bullerwell, Kwitae Chong, Da
 vid Joy, John Coleman, Pablo Seleson, Steve DeWitt, Matt Rolchigo, Jamie S
 tump, Wenjun Ge, Tim Younkin, and Stuart Slattery (Oak Ridge National Labo
 ratory)\n\nWe present Cabana, a performance portable library for building 
 scientific applications, including mesh-free techniques from atomistic (mo
 lecular dynamics) to cosmology (N-body), hybrid particle-mesh (e.g. partic
 le-in-cell), and structured grid simulation. Cabana was created through th
 e U.S. Department of Energy Exascale Computing Project to enable particle 
 simulations on exascale supercomputers, as well as local workstations. Cab
 ana uses a Kokkos+MPI strategy to separate the concerns of the application
  physics from the threaded parallelism and vendor backends, as well as fro
 m domain decomposition and distributed parallelism. Cabana implements data
  structure, parallelism, and algorithmic extensions to Kokkos for both par
 ticles and structured grids, as well as MPI communication for both. Exampl
 es of performance engineering on leadership supercomputers across critical
  application kernels will be presented for mesh-free, hybrid particle-mesh
 , and structured mesh applications. We will next discuss how to create Cab
 ana-based applications or to adopt it within an existing application and h
 ighlight recent scientific results obtained with Cabana codes across fract
 ure mechanics, materials manufacturing, and plasma physics.\n\nDomain: Com
 putational Methods and Applied Mathematics\n\nSession Chair: Phillip Colel
 la (Lawrence Berkeley National Laboratory, University of California)
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