Add cicd-ext CI configuration

.cscs-ci/container/build.Containerfile

@@ -0,0 +1,8 @@
+ARG DEPS_IMAGE
+FROM $DEPS_IMAGE
+
+COPY . /oomph
+WORKDIR /oomph
+
+RUN spack -e ci build-env oomph -- cmake -B build -DOOMPH_WITH_TESTING=ON -DMPIEXEC_EXECUTABLE="" -DMPIEXEC_NUMPROC_FLAG="" -DMPIEXEC_PREFLAGS="" -DMPIEXEC_POSTFLAGS="" && \
+    spack -e ci build-env oomph -- cmake --build build -j$(nproc)

.cscs-ci/container/deps.Containerfile

@@ -0,0 +1,24 @@
+FROM ghcr.io/eth-cscs/alps-images:py26.01-alps3-base
+
+ARG SPACK_SHA=v1.1.1
+ARG SPACK_PACKAGES_SHA=bc93746ce936d6653271b6e98f6df6ee28f64e84 # develop on 2026-03-25
+ARG SPACK_ENV_FILE
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN mkdir -p /opt/spack && \
+    curl -Ls "https://api.github.com/repos/spack/spack/tarball/$SPACK_SHA" | tar --strip-components=1 -xz -C /opt/spack
+
+ENV PATH="/opt/spack/bin:$PATH"
+
+RUN mkdir -p /opt/spack-packages && \
+    curl -Ls "https://api.github.com/repos/spack/spack-packages/tarball/$SPACK_PACKAGES_SHA" | tar --strip-components=1 -xz -C /opt/spack-packages
+
+RUN spack repo remove --scope defaults:base builtin && \
+    spack repo add --scope site /opt/spack-packages/repos/spack_repo/builtin
+
+COPY $SPACK_ENV_FILE /spack_environment/spack.yaml
+
+RUN spack env create ci /spack_environment/spack.yaml && \
+    spack -e ci concretize -f && \
+    spack -e ci install --jobs $(nproc) --fail-fast --only=dependencies

.cscs-ci/default.yaml

@@ -0,0 +1,191 @@
+include:
+  - remote: 'https://gitlab.com/cscs-ci/recipes/-/raw/master/templates/v2/.ci-ext.yml'
+
+stages:
+  - build_deps
+  - build
+  - test
+
+variables:
+  # The base image is the py26.01 alps3 image from docs.cscs.ch
+  BASE_IMAGE: ghcr.io/eth-cscs/alps-images:py26.01-alps3-base
+  SPACK_SHA: develop
+  SPACK_PACKAGES_SHA: main
+  FF_TIMESTAMPS: true
+
+.build_deps_template:
+  stage: build_deps
+  timeout: 1 hours
+  before_script:
+    - echo $DOCKERHUB_TOKEN | podman login docker.io -u $DOCKERHUB_USERNAME --password-stdin || true
+    - export DOCKERFILE_SHA=`sha256sum .cscs-ci/container/deps.Containerfile | head -c 16`
+    - export ENV_FILE_SHA=`sha256sum ${SPACK_ENV_FILE} | head -c 16`
+    - export CONFIG_TAG=`echo $DOCKERFILE_SHA-$BASE_IMAGE-$SPACK_SHA-$SPACK_PACKAGES_SHA-$ENV_FILE_SHA | sha256sum - | head -c 16`
+    - export PERSIST_IMAGE_NAME=$CSCS_REGISTRY_PATH/oomph-spack-deps-$BACKEND:$CONFIG_TAG
+    - echo -e "CONFIG_TAG=$CONFIG_TAG" >> base-${BACKEND}.env
+    - echo -e "DEPS_IMAGE=$PERSIST_IMAGE_NAME" >> base-${BACKEND}.env
+  variables:
+    DOCKERFILE: .cscs-ci/container/deps.Containerfile
+    DOCKER_BUILD_ARGS: '["SPACK_SHA", "SPACK_PACKAGES_SHA", "SPACK_ENV_FILE"]'
+  artifacts:
+    reports:
+      dotenv: base-${BACKEND}.env
+
+build_deps_nccl:
+  extends:
+    - .container-builder-cscs-gh200
+    - .build_deps_template
+  variables:
+    BACKEND: nccl
+    SPACK_ENV_FILE: .cscs-ci/spack/nccl.yaml
+
+build_deps_mpi:
+  extends:
+    - .container-builder-cscs-gh200
+    - .build_deps_template
+  variables:
+    BACKEND: mpi
+    SPACK_ENV_FILE: .cscs-ci/spack/mpi.yaml
+
+build_deps_ucx:
+  extends:
+    - .container-builder-cscs-gh200
+    - .build_deps_template
+  variables:
+    BACKEND: ucx
+    SPACK_ENV_FILE: .cscs-ci/spack/ucx.yaml
+
+build_deps_libfabric:
+  extends:
+    - .container-builder-cscs-gh200
+    - .build_deps_template
+  variables:
+    BACKEND: libfabric
+    SPACK_ENV_FILE: .cscs-ci/spack/libfabric.yaml
+
+.build_template:
+  stage: build
+  extends: .container-builder-cscs-gh200
+  timeout: 1 hours
+  before_script:
+    - echo $DOCKERHUB_TOKEN | podman login docker.io -u $DOCKERHUB_USERNAME --password-stdin || true
+    - export PERSIST_IMAGE_NAME=$CSCS_REGISTRY_PATH/oomph-build-$BACKEND:$CI_COMMIT_SHA
+    - echo -e "BUILD_IMAGE=$PERSIST_IMAGE_NAME" >> build-${BACKEND}.env
+  variables:
+    DOCKERFILE: .cscs-ci/container/build.Containerfile
+    DOCKER_BUILD_ARGS: '["DEPS_IMAGE"]'
+  artifacts:
+    reports:
+      dotenv: build-${BACKEND}.env
+
+build_nccl:
+  extends: .build_template
+  needs:
+    - job: build_deps_nccl
+      artifacts: true
+  variables:
+    BACKEND: nccl
+
+build_mpi:
+  extends: .build_template
+  needs:
+    - job: build_deps_mpi
+      artifacts: true
+  variables:
+    BACKEND: mpi
+
+build_ucx:
+  extends: .build_template
+  needs:
+    - job: build_deps_ucx
+      artifacts: true
+  variables:
+    BACKEND: ucx
+
+build_libfabric:
+  extends: .build_template
+  needs:
+    - job: build_deps_libfabric
+      artifacts: true
+  variables:
+    BACKEND: libfabric
+
+.test_serial_template:
+  stage: test
+  extends: .container-runner-clariden-gh200
+  variables:
+    SLURM_JOB_NUM_NODES: 1
+    SLURM_NTASKS: 1
+    SLURM_TIMELIMIT: '00:15:00'
+    SLURM_PARTITION: normal
+  script:
+    - ctest --test-dir build -L "serial" --output-on-failure
+
+.test_parallel_template:
+  stage: test
+  extends: .container-runner-clariden-gh200
+  variables:
+    SLURM_JOB_NUM_NODES: 1
+    SLURM_NTASKS: 4
+    SLURM_TIMELIMIT: '00:15:00'
+    SLURM_PARTITION: normal
+    SLURM_MPI: pmix
+    MPICH_GPU_SUPPORT_ENABLED: 1
+  script:
+    - srun -n 4 ctest --test-dir build -L "parallel-ranks-4" --output-on-failure
+
+test_serial_nccl:
+  extends: .test_serial_template
+  needs:
+    - job: build_nccl
+      artifacts: true
+  image: $BUILD_IMAGE
+
+test_parallel_nccl:
+  extends: .test_parallel_template
+  needs:
+    - job: build_nccl
+      artifacts: true
+  image: $BUILD_IMAGE
+
+test_serial_mpi:
+  extends: .test_serial_template
+  needs:
+    - job: build_mpi
+      artifacts: true
+  image: $BUILD_IMAGE
+
+test_parallel_mpi:
+  extends: .test_parallel_template
+  needs:
+    - job: build_mpi
+      artifacts: true
+  image: $BUILD_IMAGE
+
+test_serial_ucx:
+  extends: .test_serial_template
+  needs:
+    - job: build_ucx
+      artifacts: true
+  image: $BUILD_IMAGE
+
+test_parallel_ucx:
+  extends: .test_parallel_template
+  needs:
+    - job: build_ucx
+      artifacts: true
+  image: $BUILD_IMAGE
+
+test_serial_libfabric:
+  extends: .test_serial_template
+  needs:
+    - job: build_libfabric
+      artifacts: true
+  image: $BUILD_IMAGE
+
+test_parallel_libfabric:
+  extends: .test_parallel_template
+  needs:
+    - job: build_libfabric
+      artifacts: true
+  image: $BUILD_IMAGE

.cscs-ci/spack/libfabric.yaml

@@ -0,0 +1,6 @@
+spack:
+  specs:
+  - oomph backend=libfabric +cuda +python
+  view: false
+  concretizer:
+    unify: true

.cscs-ci/spack/mpi.yaml

@@ -0,0 +1,6 @@
+spack:
+  specs:
+  - oomph backend=mpi +cuda +python
+  view: false
+  concretizer:
+    unify: true

.cscs-ci/spack/nccl.yaml

@@ -0,0 +1,6 @@
+spack:
+  specs:
+  - oomph backend=nccl +cuda +python
+  view: false
+  concretizer:
+    unify: true

.cscs-ci/spack/ucx.yaml

@@ -0,0 +1,6 @@
+spack:
+  specs:
+  - oomph backend=ucx +cuda +python
+  view: false
+  concretizer:
+    unify: true

test/CMakeLists.txt

@@ -48,6 +48,7 @@ function(reg_serial_test t)
     add_test(
         NAME ${t}
         COMMAND $<TARGET_FILE:${t}>)
+    set_tests_properties(${t} PROPERTIES LABELS "serial")
 endfunction()
 
 foreach(t ${serial_tests})
@@ -65,7 +66,7 @@ function(reg_parallel_test t_ lib n)
         NAME ${t}
         COMMAND ${MPIEXEC_EXECUTABLE} ${MPIEXEC_NUMPROC_FLAG} ${n} ${MPIEXEC_PREFLAGS}
             $<TARGET_FILE:${t}> ${MPIEXEC_POSTFLAGS})
-    set_tests_properties(${t} PROPERTIES RUN_SERIAL TRUE)
+    set_tests_properties(${t} PROPERTIES RUN_SERIAL TRUE LABELS "parallel-ranks-${n}")
 endfunction()
 
 if (OOMPH_WITH_MPI)

test/bindings/fortran/CMakeLists.txt

@@ -30,7 +30,8 @@ function(reg_parallel_test_f t_ lib n nthr)
         COMMAND ${MPIEXEC_EXECUTABLE} ${MPIEXEC_NUMPROC_FLAG} ${n} ${MPIEXEC_PREFLAGS}
             $<TARGET_FILE:${t}> ${MPIEXEC_POSTFLAGS})
     set_tests_properties(${t} PROPERTIES
-        ENVIRONMENT OMP_NUM_THREADS=${nthr})
+        ENVIRONMENT OMP_NUM_THREADS=${nthr}
+        LABELS "parallel-ranks-${n}")
 endfunction()
 
 if (OOMPH_WITH_MPI)