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2nd ESCAPE Dissemination and Training Workshop

5 - 7 September 2017, Poznan, Poland

organised by:

The EU H2020 ESCAPE ( project brings together numerical weather prediction (NWP), climate and high-performance computing (HPC) communities to develop world-class, extreme-scale computing capabilities to European operational NWP and future climate models. One of the challenges is to execute complex state-of-the-art models of the atmosphere within tight production schedules.

Workshop sessions

After the successful first 18 months of the project there was plenty of experience and results we would like to share with the community. The workshop sessions was organised according to the following topics, including oral presentations, keynote speakers and panel discussions:
  • Weather & Climate Dwarfs – aspects and fundamental building blocks underlying weather and climate services;
  • Diagnostics methods and tools, co-design and algorithms development for use in extreme-scale, HPC applications, minimising time- and cost-to-solution;
  • Code adaptation and hybrid computing to exploit higher-level data structures, language abstractions, specialised accelerators and alternative technologies;
  • Relevant EU projects involving HPC for weather, climate, ocean and sea, Earth System Modelling communities;
  • Panel discussions on key issues from the workshop.
The programme for the workshop was as follows - the workshop presentations can be downloaded from the programme, abstracts are available in the workshop booklet.

 Tuesday, 5th September 2017
Updates on ESCAPE and related Topics 
Time Title  Presenter 
13:00 - 13:10 Welcome & General Information  Michal Kulczewski / PSNC
13:10 - 13:30 ESCAPE Project Introduction Peter Bauer / ECMWF 
13:30 - 14:40  Session: Weather & Climate Dwarfs – aspects and fundamental algorithmic building blocks underlying weather and climate services Chair: Nils Wedi
Recent advances in IFS - High resolution forecast error with reduced precision Nils Wedi / ECMWF
Elliptic operator preconditioning for all-scale atmospheric modelling Mike Gillard / Loughborough Univ
Shallow water model at MeteoFrance Michael Glinton / MeteoFrance
The HEVI approach in Discontinuous Galerkin methods Michael Baldauf /DWD
NWP dwarfs of EULAG model for structured grids Zbigniew Piotrowski / PSNC
14:40 - 15:40 Session: Code Adaptation Approaches - Addressing Heterogeneous Architectures Chair: Carlos Osuna
Tuning the implementation of the radiation scheme ACRANEB2 Jacob Poulsen / DMI
Optimising data layout for performance portability: Psyclone as a Fortran DSL Alastair McKinstry / ICHEC
Language abstractions for performance portability of weather codes on unstructured meshes: Use case of MPDATA using GridTools DSL and Atlas  Carlos Osuna / MeteoSwiss and Willem Deconick / ECMWF
15:40 - 16:10 Coffee Break
16:10 - 17:10 Session: Hybrid Computing - optimising the exploitation of alternative technologies and specialised accelerators Chair: Peter Messmer
Dwarf Performance Modeling
Miłosz Ciżnicki / PSNC
Dwarf Optimization for x86 architectures Erwan Raffin / Atos
Optimizing Dwarfs for GPUs Peter Messmer/ NVIDIA
Progress of Dwarfs on Optical Procesors Nick New / Optalysys
 17:10 - 18:00 Session: Benchmarking and Diagnostics - gaugeing code efficiency and energy consumption for regional and global NWP applications Chair: Piet Termonia
DCworms - performance simulator Sebastian Ciesielski / PSNC
Modelling the performance of AROME and comparing to other dynamical cores Yongjun Zheng, Philippe Marguinaud / MeteoFrance
The scalability of the ALARO reference configurations and its dwarfs Joris Van Bever / RMI
 18:00 Adjourn and Icebreaker 
Wednesday, 6th September 2017
Invited Talks Session 1 Chair: Piet Termonia
 Time Title  Presenter 
09:00 - 09:20 Profiling Analysis of IFS for massively parallel executions Mario Acosta / BSC
09:20 - 09:40 Recent developments in the LFRiC model Iva Kavcic / MetOffice
09:40 - 10:00 European Programme on Extremes of Weather, Climate and Computing (EPECC) Peter Bauer / ECMWF
10:00 - 10:30 Coffee Break
Invited Talks Session 2 Chair: Peter Bauer
Time Title  Presenter 
10:30 - 11:00 Challenges in Modelling and Assimilation in the Exascale Era Mark Govett / NOAA
11:00 - 11:30 Applicaton and Performance Quantification of Putative Exascale Software Technologies for High Order Computational Fluid Dynamics Duane Rosenberg / NOAA 
11:30 - 12:30 Panel discussion Europe-US collaboration Mark Govett (chair)
12:30 - 14:00 Lunch
Workshop Working Groups Part 1
Time Title Chair
14:00 - 15:00 Introductory plenary discussion on definition of working groups Nils Wedi / ECMWF
15:00 - 17:30 Parallel Working Groups  
17:30 Adjourn
Thursday,7th September 2017
Workshop - Working Groups (Part 2)
Time Title Chair
09:00 - 10:30 Parallel Working Groups (continued)  
10:30 - 11:00 Coffee Break 
11:00 - 11:20 Outcome Working Group 1 WG1 Chair
11:20 - 11:40 Outcome Working Group 2 WG2 Chair
11:40 - 12:00 Outcome Working Group 3 WG3 Chair
12:00 - 13:00 Plenary Session Moderators: Peter Bauer / ECMWF, Nils Wedi / ECMWF
13:00 End of Meeting

The workshop will be held in the beautiful city of Poznań in Poland at the Poznan Supercomputing and Networking Center (PSNC), close to Poznan University of Technology. PSNC is a leading research and computing centre in Poland, innovating and providing high performance and energy-efficient computing, optical networking and advanced applications to enable advances in eScience and engineering. 

Key information

Workshop schedule – from Tuesday 5 September 2017 13:00 to Thursday 7 September 2017 13:00
Workshop location – Poznan Supercomputing and Networking Center, Jana Pawla II 10, 61-139, Poznan, Poland. Telephone: +48 61 858 20 01

The Workshop Organising Committee

Ariel Oleksiak (, Michal Kulczewski (, Peter Bauer (, Nils Wedi (, Daniel Thiemert (, Bent H. Sass (