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DTSTAMP:20260421T090512Z
LOCATION:Plenary Room (Bldg. 6 - 001)
DTSTART;TZID=Europe/Stockholm:20260629T194100
DTEND;TZID=Europe/Stockholm:20260629T194200
UID:submissions.pasc-conference.org_PASC26_sess124_pos121@linklings.com
SUMMARY:Hybrid Block-Structured Grids for Coastal Ocean Domains
DESCRIPTION:Jonathan Schmalfuß and Vadym Aizinger (University of Bayreuth)
 \n\nAchieving high performance and performance portability is critical for
  next-generation climate and ocean modelling on heterogeneous computing sy
 stems. Ocean models face complex, fractal-like coastlines and rapidly vary
 ing bathymetry, making unstructured triangular meshes attractive for their
  flexibility, but these grids often incur significant performance penaltie
 s due to irregular memory access.\n\nWe examine whether the newly proposed
  generation method for hybrid Block-Structured Grids (hBSG) can bridge the
  gap between geometric flexibility and computational efficiency.\n\nUsing 
 the shallow water equations solver UTBEST-SYCL, we evaluate hBSGs, compris
 ing structured and unstructured blocks, both consisting of triangular elem
 ents, and relate them to unstructured grids and Block-Structured Grids (BS
 G) (only structured blocks).\n\nPreliminary results showcase both promisin
 g retained speedups in comparison to the unstructured calculation and chal
 lenges due to increased algorithmic complexity.\n\n
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