cgns

The Computational Fluid Dynamics (CFD) General Notation System (CGNS) is used worldwide to store and exchange CFD input and output data, facilitating interdisciplinary collaboration and enriching the archival quality of scientific data. CGNS is a CFD community standard that describes the intellectual content required for CFD analysis, as well as open-source software that implements the standard. Having a standardized, well-maintained, well-tested and well-performing CGNS software package encourages its use and popularity in the CFD community. Since its inception in the 1990s, the CGNS Steering Committee has operated as a self-sustaining and largely unfunded group of volunteers from various contributing organizations worldwide. The primary scientific objective of this project is to enhance the high-performance computing (HPC) capabilities of CGNS by examining how it can leverage the recent HPC features of the software stack it relies on, specifically the HDF5 and MPI I/O libraries. We plan to implement the changes made to both CGNS and HDF5 and make these enhancements available in open-source distributions. Furthermore, the project is committed to supporting accepted and essential CGNS Proposals for Extension (CPEX) to advance the next generation of CFD simulations. Lastly, we aim to broaden continuous integration (CI) testing to include a wider variety of operating systems and compilers while also addressing some of the technical debt that has accumulated over the years.