Weather and climate prediction on next generation supercomputers

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Workshop theme

Satellite Meeting at the Met Office

Ever increasing model complexity and more and more complex scientific questions are demanding higher resolution and wider process coverage. This leads to a seemingly insatiable appetite for computational resources amongst the weather and climate modelling community. This significant challenge is elevated to a new magnitude if combined with the pressures and requirements of operational centres with regard to reliability of the compute platforms, models and scientific quality of the results. This appetite can potentially be sated by the next generation of supercomputers with their step change in core counts and use of accelerators. But utilisation of these new machines demands a step change in the scalability of the code and in parts major rewrites of existing code and formulations.

This workshop aims at bringing together key players of the academic, operational NWP/climate and high performance computing communities. This meeting will address the problems, challenges and predictions for the future in order to guide development and raise awareness for limits ahead and possible routes for their mitigation, enabling future collaborations and joint developments.

The main topics to be covered are:

State of the art in weather and climate modelling, where we came from and where we want to go
Discretisations, equation-sets, grids and solvers for the resulting systems
Operational aspects of weather and climate modelling
Computational trends, limiters and opportunities

Addittionally, there will be ample time for contributed talks from workshop participants. Please email markus.gross[at]metoffice.gov[dot]uk to submit title and abstract of contributed talks no later than July 2012.

Timetable

Monday 22nd October 2012
12:35 to 13:30	Welcome and Opening	Meeting Room
13:30 to 14:15	The Dynamical Core of the Met Office Unified Model: the challenge of future supercomputer architectures	Meeting Room
14:15 to 14:40	Development of the next generation SLAV global atmospheric model	Meeting Room
14:40 to 15:10	Afternoon Coffee	Meeting Room
15:10 to 15:55	ECMWF's roadmap for non-hydrostatic modelling, existing and future challenges and recent progress in solving these	Meeting Room
16:00 to 16:25	A cell-integrated SLSI shallow-water model with conservative and consistent mass and scalar mass transport	Meeting Room
16:25 to 16:45	Afternoon Tea	Meeting Room
16:45 to 17:20	G8 ECS: Enabling climate simulation at extreme scale	Meeting Room
17:30 to 18:30	Welcome reception	Meeting Room

Tuesday 23rd October 2012
09:30 to 10:05	The ICON model and its relationship to the ICOMEX project	Meeting Room
10:05 to 10:40	Jones and Jacobsen "Can Models Built upon Unstructured Grids be Computationally Competitive on Emerging High-Performace Architectures?	Meeting Room
10:40 to 11:00	Morning Coffee	Meeting Room
11:00 to 11:45	Limited area model weather prediction using COSMO with emphasis on the numerics of dynamical cores (including some remarks on the NEC vector supercomputer)	Meeting Room
11:45 to 12:10	A primal-dual mixed finite element method for accurate and efficient atmospheric modelling on massively parallel computers	Meeting Room
12:10 to 12:35	Time-parallel algorithms for weather prediction and climate simulation	Meeting Room
12:35 to 13:30	Lunch	Meeting Room
13:30 to 14:15	Addressing unstructuredness and hardware and software divergence	Meeting Room
14:15 to 14:40	Development of a Nonhydrostatic Unified Atmospheric Model (NUMA) on Multi-Core and Many-core Computer Architectures	Meeting Room
14:40 to 15:10	Afternoon Coffee	Meeting Room
15:10 to 15:55	tba	Meeting Room
16:00 to 16:25	Fully automatic adjoints: a robust and efficient mechanism for generating adjoint dynamical cores	Meeting Room
16:25 to 16:45	Afternoon Tea	Meeting Room
16:45 to 17:20	On the Development of Implicit Solvers for Time-Dependent Systems	Meeting Room

Wednesday 24th October 2012
09:30 to 10:05	Cube-based atmospheric GCMs at CSIRO	Meeting Room
10:05 to 10:40	Quadtree-adaptive global atmospheric modelling on parallel systems	Meeting Room
10:40 to 11:00	Morning Coffee	Meeting Room
11:00 to 11:45	High resolution and variable resolution capabilities of the Community Atmosphere Model (CAM) with a spectral finite element dynamical core	Meeting Room
11:45 to 12:10	Evaluating Variable-Resolution CAM-SE as a Numerical Weather Prediction Tool	Meeting Room
12:10 to 12:35	A prototype model for coupled simulations of regional climate suitable for massively parallel architectures	Meeting Room
12:35 to 13:30	Lunch	Meeting Room
13:30 to 14:15	Earth system modeling strategies on extreme scale architectures	Meeting Room
14:15 to 14:40	Scalability of Elliptic Solvers in Numerical Weather and Climate Prediction	Meeting Room
14:40 to 15:10	Afternoon coffee	Meeting Room
15:10 to 15:55	Parallel Algorithm for Spherical Delaunay Triangulations and Spherical Centroidal Voronoi Tessellations	Meeting Room
16:00 to 16:25	Multilevel Markov-Chain Monte Carlo Methods for Large Scale Problems	Meeting Room
16:25 to 16:45	Afternoon tea	Meeting Room
16:45 to 17:20	Meeting the Challenge of Many-core Architectures in Weather and Climate Models	Meeting Room
19:30 to 22:00	Workshop dinner	Meeting Room

Thursday 25th October 2012
09:30 to 10:05	Porting and optimisation of the Met Office Unified Model on Petascale architectures	Meeting Room
10:05 to 10:30	Adaptivity using moving meshes	Meeting Room
10:30 to 10:55	Adaptive mesh refinement for a 2D unified continuous/discontinuous Galerkin Non-hydrostatic Atmospheric Model	Meeting Room
10:55 to 11:15	Morning coffee	Meeting Room
11:15 to 11:40	Linear analyses of RK IMEX schemes for atmospheric modelling	Meeting Room
11:40 to 12:05	tba	Meeting Room

Weather and climate prediction on next generation supercomputers

Workshop theme

Satellite Meeting at the Met Office

Timetable

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