Presenter: Andrew Bradley
Title:
High-order, property-preserving semi-Lagrangian tracer transport and physics-dynamics-grid remap in EAMv2
Abstract:
This talk describes two new methods that together increase the computational efficiency of the E3SM Atmosphere Model (EAM) by a factor of approximately two. EAM consists of the High-Order Methods Modeling Environment (HOMME) Spectral Element (SE) dynamical core (dycore) and the EAM physics and chemistry parameterizations. The most expensive parts of EAM are tracer transport in the dycore and parameterizations. Two related methods speed up each of these: high-order, property-preserving, remap-form, semi-Lagrangian tracer transport (SL transport) and high-order, property-preserving physics-dynamics-grid remap (Physgrid remap). SL transport replaces the dycore's Eulerian flux-form method, enabling much greater simulation time per communication round. Physgrid remap enables running parameterizations on a grid that approximately matches the effective resolution of the SE dycore. This procedure replaces running parameterizations on the denser dynamics grid. These new methods work seamlessly both in the standard EAM configuration and in the Regionally Refined Mesh (RRM) configuration.
Date
Time
- PT: 8:30 am
- ET: 11:30 am
Call Info
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Attendees
- Luke Van Roekel
- Andrew Bradley
- Ruby Leung
- Katherine Smith
- Matt Turner (Unlicensed)
- Wuyin Lin
- Philip Jones
- Carolyn Begeman
- Jon Wolfe
- Stephen Price
- fnu Quazi Ziaur Rasool (Unlicensed)
- Renata McCoy
- Milena Veneziani
- Michael Brunke
- Xylar Asay-Davis
- Steven Brus
- Adrian Turner
- Philip Jones
- Charlie Zender
- Peter Caldwell
- Xujing Jia Davis
- LeAnn Conlon
- Peter Bogenschutz
- Mark Taylor
- Youngsung Kim
- Jiwen Fan (Unlicensed)
- Jayesh Krishna
- Mark Petersen
- Ryan Forsyth
- Yilin Fang
- Hailong Wang
- Nicole Jeffery
- Holly Davis (Unlicensed)
- Guang Zhang
- Aaron Donahue
- Vince Larson
- Walter Hannah
- Mathew Maltrud
- Cheng Tao
- Robert Jacob
- Azamat Mametjanov
- Karthik Balaguru
- Andy Salinger
- Iulian Grindeanu
- Chris Golaz
- Qiu Yang (Unlicensed)
- Andrew Roberts
Discussion items
Time | Item | Who | Presentation | Recording | Notes |
|---|---|---|---|---|---|
30 min | Andrew Bradley |