Definition: The HPC-Stack is a repository that provides a unified, shell script-based build system to build the software stack required for numerical weather prediction (NWP) tools such as the Unified Forecast System (UFS) and the Joint Effort for Data assimilation Integration (JEDI) framework.
The HPC-Stack provides libraries and dependencies in a consistent manner for NWP applications. It is part of the NCEPLIBS project and is model/system agnostic. The HPC-Stack was originally written to facilitate installation of third-party libraries in a systematic manner on macOS and Linux systems (specifically RHEL). It was later transferred, expanded and further enhanced in the Joint Effort for Data assimilation Integration (JEDI) project.
Level 1 platforms (e.g., Cheyenne, Hera) already have the HPC-Stack installed. Users on those platforms do not need to install the HPC-Stack before building applications or models that require the HPC-Stack. Users working on systems that fall under Support Levels 2-4 will need to install the HPC-Stack the first time they try to run applications or models that depend on it.
Users can either build the HPC-Stack on their local system or use the centrally maintained stacks on each HPC platform. For a detailed description of installation options, see Installing the HPC-Stack.
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