This is a draft for collaborative editing until the release in early August.
Dear E3SM Team,
A new version of E3SM-Unified is available: 1.9.0. E3SM-Unified is a combination conda and spack environment that includes a large amount of analysis and pre- and post-processing software for E3SM users. The new version includes updates to ChemDyg, E3SM-Diags, e3sm_to_cmip, MPAS-Analysis, MOAB, NCO, xcdat, zppy, zstash and many more packages.
New and improved in 1.9.0
ChemDyg 0.1.2: This new package provides diagnostics for the interactive gas-phase chemistry, newly available in E3SM, to support routine testing and evaluation of the chemistry performance.
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zstash 1.4.0: This release adds a couple new options. The --include option allows users to specify which files to include. The --follow-symlinks option allows users to copy symlinks, which is helpful in preventing broken links. For a full explanation of changes, see https://github.com/E3SM-Project/zstash/releases.
Activation
As in previous versions, you can access the environment as usual by sourcing an activation script:
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source /global/common/software/e3sm/anaconda_envs/load_latest_e3sm_unified_pm-cpu.sh
Details
After 7 weeks of testing, the new version has been deployed on our supported machines: Acme1, Andes, Anvil, Chrysalis, Compy, and Perlmutter. We have dropped support for Cori-Haswell (decommissioned). We hope to add support for Frontier but we encourage users at OLCF to use Andes for analysis.
On 4 machines (Anvil, Chrysalis, Compy and Perlmutter) there are 6 packages of interest -- ESMF, ILAMB, MOAB, NCO, TempestExtremes and TempestRemap -- that have been built with Spack using system compilers and MPI libraries (matching the modules used for E3SM whenever possible). When you load E3SM-Unified on a compute node, you will have access to these versions, which can be run in parallel and which will typically run more efficiently than their counterparts in conda packages.
Next version
Testing of the next version (1.10.0) is planned to begin in early November 2023 and deployment is expected in early December. To request packages and versions to include, make a comment on Next Version.
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