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DTSTART:19700308T020000
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DTSTAMP:20190719T085743Z
LOCATION:HG D 1.1
DTSTART;TZID=Europe/Stockholm:20190612T140000
DTEND;TZID=Europe/Stockholm:20190612T143000
UID:submissions.pasc-conference.org_PASC19_sess132_msa307@linklings.com
SUMMARY:ICON Physics using the CLAW Single Column Abstraction
DESCRIPTION:Minisymposium\nClimate and Weather\n\nICON Physics using the C
 LAW Single Column Abstraction\n\nClement, Marti, Lapillonne, Fuhrer, Sawye
 r\n\nIn order to profit from emerging high-performance computing systems, 
 weather and climate models need to be adapted to run efficiently on differ
 ent hardware architectures such as accelerators. This is a major challenge
  for existing community models that represent very large code bases writte
 n in Fortran such as ICON. Large part of the code is ported using OpenACC 
 compiler directives but for time-critical components such as physical para
 meterizations, code restructuring and optimizations are necessary to obtai
 n optimal performance. In an effort to keep a single source code for multi
 ple target architectures, the CLAW Compiler and the CLAW Single Column Abs
 traction (SCA) were introduced. In this talk, we extend the CLAW SCA to ha
 ndle ELEMENTAL functions and subroutines to apply it to the JSBACH soil mo
 del of ICON. With this extension, the model can be automatically ported to
  OpenACC or OpenMP for accelerators with minimal to no change to the origi
 nal code.
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