Collaborations to Prepare Europe’s Weather and Climate Models for Pre-Exascale Systems

(Closed for submission)

This call is now closed.

The call aims to support the weather and climate model developing communities in Europe with preparing their simulation codes for (pre-)exascale computing platforms. 

The project, ESiWACE2, has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement 823988.

Preparing software for computing platforms and architecture

The ESiWACE and ESiWACE2 projects aim to improve model efficiency and prepare the software to enable model execution on existing and near-future hardware architectures and simulate experiments at unprecedented grid resolutions or ensemble sizes. In addition, it will include computationally expensive physical processes that were previously unfeasible. 

The joint eScience Center/Atos-Bull call will support this objective by stimulating new collaborations that provide consultancy and engineering efforts in support of exascale preparations of weather and climate model developing communities. These collaborative projects will allow experts in high-performance computing (HPC) and accelerated computing to work together with the model developers to advance the codebase in order that (parts of) the model can be executed efficiently on modern CPU processor or modern computing accelerators, such as Graphics Processing Units (GPUs). 

Read about the refactoring and porting service.

Does this open call for proposal interest you? Click here to download the full call text:


A total of four proposals will be granted as part of the call. Each grant will consist of in-kind support in the form of one or two skilled Research Software Engineers (RSEs) employed by either the eScience Center or Atos-Bull. The RSEs will work remotely on the project for up to 6 person months (PMs) during 2022. The hours will be planned flexibly and in mutual agreement with the applicant. This is the third call for proposals as part of the ESiWACE2 Service 1. Applicants that have applied in earlier calls can apply again in later calls. However, please note that applications that already received a service project as part of an earlier ESiWACE2 Service 1 call will have lower priority compared to new applications.

Procedure and deadline

Following submission, a technical review will be carried out on the technical feasibility and state-of-the art technology. The proposals that pass the review will be sent to an external scientific review committee for a final selection based on scientific merit and impact. The accepted proposals will be announced in December 2021. 

The submission deadline is on 1 November 2021 at 14:00 CET.

Curious to learn more? For more information, we encourage you to visit ESiWACE2.

Other call opportunities

We are always open for opportunities to collaborate with our colleagues! Be sure to check out our other calls for proposals.