E3SM-Unified

E3SM-Unified is the shared analysis and post-processing environment for the Energy Exascale Earth System Model (E3SM). It is distributed as an e3sm-unified conda package and deployed on supported HPC systems with mache deploy.

Documentation

Latest documentation for users, developers, and maintainers.

Getting Started

E3SM-Unified supports Linux, macOS, and several E3SM-supported HPC systems. Windows is not supported.

On supported HPC machines, source the generated load script for your system, for example:

source /global/common/software/e3sm/anaconda_envs/load_latest_e3sm_unified_pm-cpu.sh

On laptops, workstations, or unsupported systems, install Miniforge3 and create an environment from conda-forge:

conda create -n e3sm-unified -c conda-forge python=3.13 e3sm-unified
conda activate e3sm-unified

If you need a specific package variant, you can select it explicitly, for example:

conda create -n e3sm-unified -c conda-forge python=3.13 "e3sm-unified=*=mpi_mpich_*"

The authoritative recipe and package list live in recipes/e3sm-unified/e3sm-unified-feedstock/recipe/recipe.yaml.