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DTSTAMP:20190719T085744Z
LOCATION:HG D 1.2
DTSTART;TZID=Europe/Stockholm:20190613T171500
DTEND;TZID=Europe/Stockholm:20190613T174500
UID:submissions.pasc-conference.org_PASC19_sess168_msa211@linklings.com
SUMMARY:SCREAM : A New Performance-Portable Global Cloud-Resolving Atmosph
 ere Model
DESCRIPTION:Minisymposium\nComputer Science and Applied Mathematics, Clima
 te and Weather, Physics\n\nSCREAM : A New Performance-Portable Global Clou
 d-Resolving Atmosphere Model\n\nDonahue, Caldwell\n\nThe Energy Exascale E
 arth System Model (E3SM) was born from the U.S. Department of Energy&rsquo
 ;s desire to leverage its world-leading supercomputing power to answer imp
 ortant questions about climate change.  In order to take advantage of
  the next generation of high-performance computing platforms, the E3SM mod
 el must parallelize over millions of computing elements.  This can on
 ly be accomplished by running at very high resolution.  The Simple Cl
 oud Resolving E3SM Atmosphere Model (SCREAM) project will propel the E3SM 
 model into a growing class of high-resolution cloud-permitting global clim
 ate models, with a target resolution of 3km globally.  SCREAM will re
 present a nearly complete rewrite of atmospheric physics in C++ using Kokk
 os data structures, exposing maximal parallelism.  Positioning E3SM t
 o achieve highly-performant on-node parallelism on a variety of emerging a
 rchitectures with a single code base.  This presentation will introdu
 ce the SCREAM design and implementation and review recent results demonstr
 ating increased parallelism on GPU architectures. This work was perfo
 rmed under the auspices of the U.S. Department of Energy by Lawrence Liver
 more National Laboratory under Contract DE-AC52-07NA27344 IM Release Numbe
 r LLNL-ABS-769248
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