Add base image documentation

ci/base-images/gh200-cray-mpich/HOWTO.md

@@ -0,0 +1,64 @@
+# Modified base image to allow building cray-mpich
+
+## Preparation steps
+
+```
+mkdir lib64
+cp -a /usr/lib64/libcuda.* lib64/
+cp -a /usr/lib64/libxpmem.* lib64/
+
+git clone https://github.com/eth-cscs/alps-cluster-config.git
+
+cp alps-cluster-config/daint/packages.yaml packages.yaml
+```
+
+## Edit cluster config files
+
+Modify `packages.yaml`:
+```
+    xpmem:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /usr
+    libfabric:
+-     buildable: false
+-     externals:
+-     - spec: [email protected]
+-       prefix: /opt/cray/libfabric/1.15.2.0/
++     require: "@1.15.2.0"
+    slurm:
+      buildable: false
+      externals:
+      - spec: slurm@23-11-7
+        prefix: /usr
+```
+Note: The container engine (CE) will replace libfabric with the system one when running the container.
+Make sure to use the same version.
+
+
+Modify `alps-cluster-config/site/repo/packages/cray-gtl/package.py`
+```
+                 patchelf("--force-rpath", "--set-rpath", rpath, f, fail_on_error=False)
+                 # The C compiler wrapper can fail because libmpi_gtl_cuda refers to the symbol
+                 # __gxx_personality_v0 but wasn't linked against libstdc++.
+-                if "libmpi_gtl_cuda.so" in str(f):
+-                    patchelf("--add-needed", "libstdc++.so", f, fail_on_error=False)
+                 if "@8.1.27+cuda" in self.spec:
+                     patchelf("--add-needed", "libcudart.so", f, fail_on_error=False)
+                     patchelf("--add-needed", "libcuda.so", f, fail_on_error=False)
+```
+Note: the library links `libstdc++.so` from version 8.1.23. All the available aarch64 libraries already link with it,
+therefore we can safely remove it for gh200.
+
+## Build and push
+
+```
+export TAG="v1.3"
+CSCS_REGISTRY="jfrog.svc.cscs.ch/docker-ci-ext/4700071344751697"
+podman login jfrog.svc.cscs.ch
+
+podman build -f build.Dockerfile -t $CSCS_REGISTRY/base-images/cuda_12.6.1-devel-ubuntu24.04:$TAG
+
+podman push $CSCS_REGISTRY/base-images/cuda_12.6.1-devel-ubuntu24.04:$TAG
+```

ci/base-images/gh200-cray-mpich/build.Dockerfile

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+FROM docker.io/nvidia/cuda:12.6.1-devel-ubuntu24.04
+
+COPY lib64 /usr/lib
+COPY packages.yaml /root/.spack/packages.yaml
+COPY alps-cluster-config/site /root/site

ci/docker/patch-rocm-image/build-rocm-patched.sh → ci/base-images/patch-rocm-image/build-rocm-patched.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # dlaf-no-license-check
 
-CSCS_REGISTRY="jfrog.svc.cscs.ch/contbuild/testing/anfink/4700071344751697"
+CSCS_REGISTRY="jfrog.svc.cscs.ch/docker-ci-ext/4700071344751697"
 docker build -t $CSCS_REGISTRY/rocm-patched:5.3.3 -f build.Dockerfile .
 docker push $CSCS_REGISTRY/rocm-patched:5.3.3