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DTSTAMP:20190719T085744Z
LOCATION:HG D 1.2
DTSTART;TZID=Europe/Stockholm:20190612T170000
DTEND;TZID=Europe/Stockholm:20190612T173000
UID:submissions.pasc-conference.org_PASC19_sess153_msa127@linklings.com
SUMMARY:PALM Meets OpenACC: Performance Portability of a Real-World CFD Co
 de
DESCRIPTION:Minisymposium\nComputer Science and Applied Mathematics, Emerg
 ing Application Domains, Climate and Weather, Physics\n\nPALM Meets OpenAC
 C: Performance Portability of a Real-World CFD Code\n\nKnoop, Hahnfeld, Gr
 onemeier, Raasch\n\nPALM is a large-eddy simulation (LES) model that simul
 ates turbulent atmospheric and oceanic flows. It has been applied to answe
 r questions linked to a variety of topics including fundamental atmospheri
 c turbulence research, urban area modeling, aircraft, and airport safety, 
 wind energy project site assessment and cloud physics research. PALM is wr
 itten in Fortran, entails 210 kLOC and has been tested to scale very well 
 on HPC farms of up to 50,000 cores.  The software is a good represent
 ative of a real-world computational fluid dynamics (CFD) code. In order to
  benefit from the rapidly evolving computational power and availability of
  graphics processing units (GPUs) on modern high-performance computing sys
 tems, PALM has been ported to run on such architectures using OpenACC. The
  speaker will share detailed performance analysis of this legacy code, des
 cription of porting steps focusing on performance portability while moving
  the code from CPU to GPU.
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