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Merged
mjaehn merged 1 commit into from
Jun 16, 2026
Merged

Update ICON release #436

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57 changes: 2 additions & 55 deletions docs/models/icon/compile.md
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ Clone the ICON repository:

=== "Latest release at DKRZ GitLab"
```console
git clone -b release-2025.10-public --recurse-submodules https://gitlab.dkrz.de/icon/icon-model.git
git clone -b release-2026.04-public --recurse-submodules https://gitlab.dkrz.de/icon/icon-model.git
```

=== "icon-nwp master branch at DKRZ GitLab"
Expand All @@ -30,59 +30,6 @@ Clone the ICON repository:

#### Säntis

!!! info "Changes needed for latest ICON release"
Before continuing with the instructions below, you must apply the following patch if you are using the latest DKRZ GitLab release `2025.10` (older releases have not been tested). The same applies if you are using an `icon-nwp` version prior to the [[hotfix] Fix CI after major update of Säntis :material-open-in-new:](https://gitlab.dkrz.de/icon/icon-nwp/-/commit/2d6ef79e184af8cce957f8b6862f076040285c62){:target="_blank"} commit.
<details>
<summary> <b><u> patch </u></b> </summary>

```diff
diff --git a/config/cscs/SANTIS_ENV_TAG b/config/cscs/SANTIS_ENV_TAG
index 4b8589c5a..f4526e9f3 100644
--- a/config/cscs/SANTIS_ENV_TAG
+++ b/config/cscs/SANTIS_ENV_TAG
@@ -1 +1 @@
-icon/25.2:v3
+icon/25.2:v4
diff --git a/config/cscs/spack/santis_cpu_double/spack.yaml b/config/cscs/spack/santis_cpu_double/spack.yaml
index f0300a1b9..20c7ce662 100644
--- a/config/cscs/spack/santis_cpu_double/spack.yaml
+++ b/config/cscs/spack/santis_cpu_double/spack.yaml
@@ -11,8 +11,11 @@
spack:
specs:
- cosmo-eccodes-definitions@2.36.0.3
- - icon @develop %nvhpc +grib2 +eccodes-definitions +ecrad +emvorado +art +dace ~aes
- ~jsbach ~ocean ~coupling ~rte-rrtmgp ~loop-exchange
+ - icon @develop %nvhpc +grib2 +eccodes-definitions +ecrad +emvorado +art ~aes
+ ~jsbach ~ocean ~coupling ~rte-rrtmgp ~loop-exchange +mpi
view: true
concretizer:
unify: true
+ packages:
+ mpi:
+ require: cray-mpich%nvhpc
diff --git a/config/cscs/spack/santis_gpu_double/spack.yaml b/config/cscs/spack/santis_gpu_double/spack.yaml
index 677e1bd3b..052d0856a 100644
--- a/config/cscs/spack/santis_gpu_double/spack.yaml
+++ b/config/cscs/spack/santis_gpu_double/spack.yaml
@@ -11,9 +11,12 @@
spack:
specs:
- cosmo-eccodes-definitions@2.36.0.3
- - icon @develop %nvhpc +grib2 +eccodes-definitions +ecrad +emvorado +art +dace gpu=nvidia-90
+ - icon @develop %nvhpc +grib2 +eccodes-definitions +ecrad +emvorado +art gpu=nvidia-90
+mpi-gpu +realloc-buf ~aes ~jsbach ~ocean ~coupling ~rte-rrtmgp ~loop-exchange
~cuda-graphs fflags="-traceback"
view: true
concretizer:
unify: true
+ packages:
+ mpi:
+ require: cray-mpich%nvhpc
```

</details>

Run the following after navigating into the ICON root folder:

=== "CPU compilation"
Expand All @@ -97,7 +44,7 @@ Run the following after navigating into the ICON root folder:
uenv run ${UENV_VERSION} -- ./config/cscs/santis.gpu.nvhpc
```

!!! info "User environments and out-of-source builds"
!!! info "User environments (uenvs)"

If you have never used a uenv on Säntis, you need to create a uenv repo first:
```
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2 changes: 1 addition & 1 deletion docs/models/icon/index.md
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Expand Up @@ -14,7 +14,7 @@ C2SM facilitates the utilisation of ICON on the [Alps :material-open-in-new:](ht

!!! info

The latest official ICON release (currently `2025.10`) and the [`icon-nwp` master branch :material-open-in-new:](https://gitlab.dkrz.de/icon/icon-nwp){:target="_blank"} are continuously being tested on both [Santis](../../hpc/santis.md){:target="_blank"} (CSCS) and [Euler](../../hpc/euler.md){:target="_blank"} (ETHZ).
The latest official ICON release (currently `2026.04`) and the [`icon-nwp` master branch :material-open-in-new:](https://gitlab.dkrz.de/icon/icon-nwp){:target="_blank"} are continuously being tested on both [Santis](../../hpc/santis.md){:target="_blank"} (CSCS) and [Euler](../../hpc/euler.md){:target="_blank"} (ETHZ).

## Mailing List

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