BEGIN:VCALENDAR
VERSION:2.0
PRODID:Linklings LLC
BEGIN:VTIMEZONE
TZID:Europe/Stockholm
X-LIC-LOCATION:Europe/Stockholm
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700308T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701101T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20210916T132529Z
LOCATION:Jean Calvin
DTSTART;TZID=Europe/Stockholm:20210708T170000
DTEND;TZID=Europe/Stockholm:20210708T190000
UID:submissions.pasc-conference.org_PASC21_sess165@linklings.com
SUMMARY:Algorithmic Developments towards Earth System Modelling on Exascal
e Supercomputers
DESCRIPTION:Minisymposium\n\nMany of the operational weather and climate p
rediction models world wide have been developed over multiple decades. The
algorithms used in these models were often designed well before the multi
core era started. To take full advantage of the emerging massively paralle
l heterogeneous supercomputers it is necessary to investigate completely n
ew algorithms which have never been used in operational weather and climat
e prediction before and which promise significant improvement in terms of
scalability and energy efficiency. In particular, high order discontinuous
and continuous Galerkin methods offer increased operational intensity whi
ch allows to make better use of the available processor performance while
reducing the necessary memory traffic which is typically the bottleneck in
most earth system models. At the same time new time integration methods a
llow to reduce the number of time steps or even to parallelize the computa
tion over time steps. This mini-symposium will present innovative work on
these new algorithmic approaches and discuss their benefits in light of th
e upcoming exascale supercomputers.\n\nPanel Discussion\n\nMueller\n\nOpen
discussion.\n\n---------------------\nHigh Order Semi-Lagrangian Disconti
nuous Galerkin methods for NWP problems\n\nTumolo\n\nHigh order Discontinu
ous Galerkin (DG) methods pose stringent stability restrictions on explici
t time discretization methods. A novel strategy to increase the computatio
nal efficiency of DG methods for advection-dominated flow problems will be
presented, based on a semi-Lagrangian time discretizatio...\n\n----------
-----------\nGeoFLOW: A High-Order Spectral Element Solver for Partial Dif
ferential Equations on the Sphere\n\nFlynt, Rosenberg, Govett\n\nWe presen
t an update on the GeoFluid Object Workbench (GeoFLOW) development effort
at NOAA that enables researchers to express numerical elements of geophysi
cally relevant fluid dynamics PDEs with varying degrees of granularity fro
m individual operators to fully parallelized systems. The softw...\n
\n---------------------\nTime Parallel Integration and Phase Averaging for
the Nonlinear Shallow Water Equations on the Sphere\n\nYamazaki, Cotter\n
\nIn this talk, we present a phase averaging framework for the rotating sh
allow water equations, discretised using compatible finite element methods
. Phase averaging consists of averaging the nonlinearity over phase shifts
in the exponential of the linear wave operator. Phase averaging is a form
of he...\n\n\nDomain: CS and Math, Climate and Weather
END:VEVENT
END:VCALENDAR